Date:07/15/1994
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Vertical variation of the steady-state drop spectrum in a one-dimensional rain shaft
Publication:J. Atmos. Sci., 51, 2075-2085
Abstract:Past work has provided through analysis of the coalescence/breakup process in a 'box model' setting in which the drop size distribution is assumed invariant with height. In this work, the analysis is extended to examine the coalescence/breakup rpcess in a one-dimensional shaft model setting that allows vertical variation of the drop size
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Record ID:46/1


Date:1/1/1994
Subject:(46) Microphysics - Warm Cloud
Author:Beheng, K.D.
Title:A parameterization of warm cloud microphysical conversion processes
Publication:Atmos. Res., 33, 193-206
Abstract:A parameterization scheme is presented by which coagulation growth of drops is simulated. It is oriented at the common parameterization idea of partitioning the total water substance in a cloud water and a rainwater portion. This concept is accordingly applied to the stochastic collection equation by which the time evolution of a drop spectrum is described.
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Record ID:46/2


Date:00/00/1994
Subject:(46) Microphysics - Warm Cloud
Author:Korolev, A.V.
Title:A study of bimodal droplet size distributions in stratiform clouds
Publication:Atmos. Res., 32, 143-170
Abstract:Presented here are the results of studying droplet size distributionss in stratiform clouds (St, Sc, As, Ac, Ns) over the USSR obtained with a FSSP-100 (PMS). The bimodal droplet spectra turned out to be common phenomena in stratiform clouds, and on average, they occupy about 14% of cloud space.
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Record ID:46/3


Date:05/15/1989
Subject:(46) Microphysics - Warm Cloud
Author:Reuter, G.W., C.J. Wright, D. Eyre
Title:Effects of turbulence on the growth of a cloud drop spectrum
Publication:J. Atmos. Sci., 46, 1407-1410
Abstract:The collection equation is solved using a probabilistic collection kernel that includes the effects of overlapping turbulent eddies. The numerical results show that turbulence contributes to the collection process, and as the turbulence increases, so does the broadening of the drop spectrum.
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Record ID:46/4


Date:06/15/1994
Subject:(46) Microphysics - Warm Cloud
Author:Kogan, Y.L., W.J. Martin
Title:Parameterization of bulk condensation in numerical cloud models
Publication:J. Atmos. Sci, 51, 1728-1739
Abstract:0
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Record ID:46/5


Date:10/01/1994
Subject:(46) Microphysics - Warm Cloud
Author:Bower, K.N., T.W. Choularton, J. Latham, J. Nelson, M.B. Baker, J. Jensen
Title:A parameterization of warm clouds for use in atmospheric general circulation models
Publication:J. Atmos. Sci., 51, 2722-2732
Abstract:Simple parameterizations of droplet effective radius in stratiform and convective clouds are presented for use in global climate models. Datasets from subtropical marine stratocumulus, continental and maritime convective clouds, and hill cap clouds in middle latitudes and a small amount of data from stratocumulus clouds in middle latitudes have been examined.
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Record ID:46/6


Date:10/01/1990
Subject:(46) Microphysics - Warm Cloud
Author:Murakami, M., T. Matsuo
Title:Development of the hydrometeor videosonde
Publication:J. Atmos. & Ocean. Tech., 7, 613-620
Abstract:A new special sonde, the hydrometeor videosonde, has been developed to measure the vertical distribution of hydrometeors in clouds.
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Record ID:46/7


Date:11/01/1994
Subject:(46) Microphysics - Warm Cloud
Author:Pobanz, B.M., J.D. Marwitz, M.K. Politovich
Title:Conditions associated with large-drop regions
Publication:J. Appl. Met., 33, 1366-1372
Abstract:In light of the significant icing hazard large drops pose to general aviation, two conditions have been previously associated with large-drop formation; these being a warm cloud-top temperature and a low droplet concentration. This paper identifies an additional condition associated with the development of large-drop regions.
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Record ID:46/8


Date:11/01/1994
Subject:(46) Microphysics - Warm Cloud
Author:Czys, R.R.
Title:Preliminary laboratory results on the coalescence of small precipitation-size drops falling freely in a refrigerated environment
Publication:J. Atmos. Sci., 51, 3209-3218, Notes & Correspondence
Abstract:Results from laboratory observations of isolated collisions between small precipitation-size drops falling freely at terminal velocity in a refrigerated collision chamber are presented. The average radii of the size pair studied were 353 and 306 micrometers. Air temperatures ranged from 20 to -15 degrees Celcius. Drop temperatures ranged from 20 to approximately 2 degrees Celcius.
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Record ID:46/9


Date:12/01/1994
Subject:(46) Microphysics - Warm Cloud
Author:Maguire II, W.B., S.K. Avery
Title:Retrieval of raindrop size distributions using two Doppler wind profilers: Model sensitivity testing
Publication:J. Appl. Met., 33, 1623-1635
Abstract:The behavior of precipitation is of great importance in obtaining a better understanding of heat transport estimates and global processes in the atmosphere. This paper discusses improvements in an earlier raindrop size distribution model that utilizes two Doppler wind profilers to obtain accurate measurements of rainfall.
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Record ID:46/10


Date:01/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Khain, A.P., M.B. Pinsky
Title:Drop inertia and its contribution to turbulent coalescence in convetive clouds. Part I: Drop fall in the flow with random horizontal velocity.
Publication:J. Atmos. Sci., 52, 196-206
Abstract:The results of simulated drop fall in horizontal flows with the vertical shear of different kinds (constant linear, periodic, and with random velocity distribution) are presented. It is shown that the inertia of drops is significant enough to lead to substantial drop velocity deviations from the velocity of the flow and to the generation of relative velocity between drops of different sizes.
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Record ID:46/11


Date:1/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Bigg, E.K.
Title:Discrepancy between observation and prediction of concentratins of cloud condensation nuclei.
Publication:Atmos. Res., 20, 81-86
Abstract:Observations of the nature and the size distribution of the atmospheric aerosol can be used to predict the proportion that should be active in cloud droplet formation at various supersaturations.
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Record ID:46/12


Date:00/00/1994
Subject:(46) Microphysics - Warm Cloud
Author:Lee, I.Y., H.M. Park
Title:Comparison of microphysics parameterizations in a three-dimensional dynamic cloud model.
Publication:Atmos. Env., 28, 1615-1625
Abstract:0
Location:7
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Record ID:46/13


Date:05/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Hu, Z., R.C. Srivastava
Title:Evolution of raindrop size distribution by coalescence, breakup, and evaporation: Theory and observations
Publication:J. Atmos. Sci., 52, 1761-1783 (In Lib. at Technical Report No. 56)
Abstract:The evolution of raindrop size distribution by coalescence, collisional breakup, and evaporation is studied using the Low and List parameterization for collisions.
Location:7
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Record ID:46/14


Date:06/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Ochs, H.T., K.V. Beard, R.R. Czys, N.F. Laird, D.E. Schaufelberger, D.J. Holdridge
Title:Collisions between small precipitation drops. Part I: Laboratory measurements of bounce, coalescance, and temporary coalescence
Publication:J. Atmos. Sci., 52, 2258-2275
Abstract:Self-collection efficiencies were measured for isolated drop pairs falling at terminal velocity using orthogonal cameras to obtain the horizontal offset of the drops before collision and collision outcome.
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Record ID:46/15


Date:04/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Sauvageot, H., J.-P. Lacaux
Title:The shape of averaged drop size distributions
Publication:J. Atmos. Sci., 52, 1070-1083
Abstract:The shape of averaged drop size distributions (DSD) is studied from a large sample of data (892 h) collected at several sites of various latitudes. The results show that neither the hypothesis of an exponential distribution to represent rainfall with a high rain rate (R) not the concept of equilibrium distribution arising from the various models using the parameterization of Low and List is compatible with the observations.
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Record ID:46/16


Date:00/00/1995
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Khain, A.P., I.L. Sednev
Title:Simulation of hydrometeor size spectra evolution by water-water, ice-water and ice-ice interactions
Publication:Atmos. Res., 36, 107-138
Abstract:0
Location:WarmCld-7
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Record ID:46/17


Date:07/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Wacker, U.
Title:Competition of precipitation particles in a model with parameterized cloud microphysics
Publication:J. Atmos. Sci., 52, 2577-2589
Abstract:The nonlinear open system cloud is analyzed in this basic study in the context of the theory of self-organization. Emphasis is placed on the microphysical processes of riming, accretion, and sedimentation in a supercooled cloud containing several types of precipitation particles. These processes are mathematically described using a parameterization scheme of the Kessler type.
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Record ID:46/18


Date:09/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Liley, J.B.
Title:Analytic solution of a one-dimensional equation for aerosol and gas dispersion in the stratosphere
Publication:J. Atmos. Sci., 52, 3283-3288
Abstract:The one-dimensional equation for dispersion of an inert tracer in an exponentially stratified fluid with exponential dispersion coefficient admits a simple analytic solution. The solution is a form of the gamma distribution of which the usual Gaussian plume solution of the diffusion equation is a special case. The new solution has the property, at first surprising for dispersion, that in comoving coordinates it is invariant with time.
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Record ID:46/19


Date:07/01/1995
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Rasmussen, R.M.
Title:A review of theoretical and observational studies in cloud and precipitation physics: 1991-1994
Publication:Reviews of Geophysics, Supplement, Pages 795-809, July 1995, U.S. National Report to International Union of Geodesy and Geophysics 1991-1994.
Abstract:It is becoming increasingly evident that clouds and precipitation play a critical role in many of the environmental or so-called 'strategic' issues facing our society today, such as the ozone hole problem, climate change, ocean-atmosphere interactions and acid range.
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Record ID:46/20


Date:10/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Asano, S., M. Shiobara, A. Uchiyama
Title:Estimation of cloud physical parameters from airborne solar spectral reflectance measurements for stratocumulus clouds
Publication:J. Atmos. Sci., 52, 3556-3576
Abstract:A new method is proposed to retrieve various cloud physicla parameters of water cloud from the solar-flux reflectances at four wavelengths measured by using the airborne Multi-channel Cloud Pyranometer (MCP system.
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Record ID:46/21


Date:10/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Korolev, A.V.
Title:The influence of supersaturation fluctuations on droplet size spectra formation
Publication:J. Atmos. Sci., 52, 3620-2634
Abstract:The concept of droplet spectrum local broadening and narrowing is introduced. It is shown that a cloud droplet spectrum may be narrowed at one size interval and broadended at another simultaneously.
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Record ID:46/22


Date:07/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C.
Title:Growth of cloud drops by condensation: Effect of surface tension on the dispersion of drop sizes
Publication:J. Atmos. Sci., 48, 1596-1605
Abstract:The growth of cloud drops by condensation in an updraft has been treated in a number of papers starting with Howell (1949).
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Record ID:46/23


Date:12/01/1981
Subject:(46) Microphysics - Warm Cloud
Author:Alofs, D.J., T.H. Liu
Title:Atmospheric measurements of CCN in the supersaturation range 0.013-0.681%
Publication:J. Atmos. Sci., 38, 2772-2778
Abstract:Concentrations of cloud condensation nuclei in the atmosphere were measured at Rolla, MO, near ground level.
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Record ID:46/24


Date:03/01/1986
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Analysis of the Low and List drop-breakup formulation
Publication:J. Clim. Appl. Met., 25, 313-321
Abstract:An analysis of the Low and List drop-breakup formulation has uncovered severe computational problems that arise in calculating both the fragment distribution function and the Bleck expansion coefficients
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Record ID:46/25


Date:11/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:Anderson, R.J., R.C. Miller, J.L. Kassner, Jr., D.E. Hagen
Title:A study of homogeneous condensation-freezing nucleation of small water droplets in an expansion cloud chamber
Publication:J. Atmos. Sci., 37, 2508-2520
Abstract:Observations of the homogeneous nucleation of water vapor in an expansion cloud chamber have been carried out for the temperature range -50 to +17\deg C in the carrier gases argon and helium.
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Record ID:46/26


Date:00/00/1989
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K., J. Feng, C. Chuang
Title:A simple perturbation model for the electrostatic shaper of falling drops
Publication:J. Atmos. Sci., 46, 2402-2418
Abstract:The perturbation model for the shape of falling drops in the presence of electric fields and charges was developed by extension of previous methods that includes aerodynamic effects in the pressure balance
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Record ID:46/27


Date:10/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., R.J. Kubesh
Title:Laboratory measurements of small raindrop distortion. Part II: Oscillation fequencies and modes
Publication:J. Atmos. Sci., 48, 2245-2264
Abstract:The oscillation frequencies and modes of small raindrops (1.04-1.54-mm diameter) were determined from laboratory epxeriments using water drops generated at terminal velocity at a fall distance sufficient
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Record ID:46/28


Date:03/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., R.J. Kubesh, H.T. Ochs, III
Title:Laboratory measurements of small raindrop distortion. Part I: Axis ratios and fall behavior
Publication:J. Atmos. Sci., 48, 698-710
Abstract:The resonant interactions between eddy shedding and drop oscillations postulated by Gunn for millimeter diameter raindrops were investigated in a series of laboratory measurments of axis ratio and fall
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Record ID:46/29


Date:04/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., H.T. Ochs, III
Title:Warm-rain initiation: an overview of microphysical mechanisms
Publication:J. Appl. Meteor., 32, 608-625
Abstract:Rain triggering mechanisms are evaluated in three microphysical steps: droplet activation on cloud condensation nuclei, droplet growth by condensation, and droplet growth by coalescence.
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Record ID:46/30


Date:05/01/1984
Subject:(46) Microphysics - Warm Cloud
Author:Bennett, J.A., D.J. Rang, R.C. Boston
Title:The relationship between N_o and Lambda for Marshall-Palmer type raindrop-size distributions
Publication:J. Clim. Appl. Met., 23, 768-711
Abstract:For faindrop-size distributions of the form N_d = N_o e^{-\Delta D}, where N_D is the number of drops of diameter D per unit volume per unit increment in drop diameter, the parameters N_o and \Delta cannot be specified independently
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Record ID:46/31


Date:00/00/1989
Subject:(46) Microphysics - Warm Cloud
Author:Bohm, H.
Title:A general equation for the terminal fall speed of solid hydrometeors
Publication:J. Atmos. Sci., 46, 2419-2427
Abstract:A comprehensive yet simple formula is presented for the terminal fall velocity of solid precipitation particles.
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Record ID:46/32


Date:02/15/1984
Subject:(46) Microphysics - Warm Cloud
Author:Bradley, S.G., C.D. Stow
Title:Comments on ``Collision, coalescence and breakup of raindrops. Parts I and II
Publication:J. Atmos. Sci., 41, 701-703
Abstract:None
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Record ID:46/33


Date:05/01/1990
Subject:(46) Microphysics - Warm Cloud
Author:Brenguier, J.L.
Title:Parameterization of the condensation process in small nonprecipitating cumuli
Publication:J. Atmos. Sci., 47, 1127-1148
Abstract:Measurements of the droplet size distribution collected in a field of small nonprecipitating cumuli are analyzed.
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Record ID:46/34


Date:04/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Brenguier, J.L.
Title:Observations of cloud microstructure at the centimeter scale
Publication:J. Appl. Met., 32, 783-793
Abstract:Current conceptual models of the processes that modify the droplet spectrum in convective clouds starts with entrainment of environmental air foallowed by turbulent mixing of these parcels into progressively
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Record ID:46/35


Date:01/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Brenguier, J.L., W.W. Grabowski
Title:Cumulus entrainment and cloud droplet spectra: a numerical model within a two-dimensional dynamical framework
Publication:J. Atmos. Sci., 50, 120-136
Abstract:A simple numerical model designed to predict the evolution of cloud droplet spectra with special emphasis on the role of entrainment is developed for a case of nonprecipitating cloud.
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Record ID:46/36


Date:12/1/1981
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Time-constant variation in the collision-breakup equation
Publication:J. Atmos. Sci., 38, 2758-2762
Abstract:Discretization of the collision-breakup equation results in a nonlinear system that can produce highly dampled solution components.
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Record ID:46/37


Date:05/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Coalescence and breakup-induced oscillations in the evolution of the raindrop size distribution
Publication:J. Atmos. Sci., 46, 1186-1192
Abstract:Models of the coalescence/breakup process yield drop number distribuitons that approach equilibrium but the number density often is not a monotonic function of time.
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Record ID:46/38


Date:02/15/1988
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:The effects of filament, sheet, and disk breakup upn the drop spectrum
Publication:J. Atmos. Sci., 45, 712-718
Abstract:The coalescence/breakup formulas introduced by Low and List included a new formulation of the coalescence efficient and a new formulation of the fragment distribuiton function P, which is written as a
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Record ID:46/39


Date:03/01/1990
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Reversals in evolving raindrop size distributions due to the effects of coalescence and breakup
Publication:J. Atmos. Sci., 47, 746-754
Abstract:Numericla solutions of the coalescance/breakup equation often produce drop size distributions that move away from eqilibrium before turning back.
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Record ID:46/40


Date:11/01/1995
Subject:(46) Microphysics - Warm Cloud
Author:Ochs, H.T., III, K.V. Beard, N.F. Laird, D.J. Holdridge, D.E. Schaufelberger
Title:Effects of relative humidity on the coalescence of small precipitation drops in free fall
Publication:J. Atmos. Sci.
Abstract:Observations of the effects of relative humidity on coalescence are limited to studies using supported drops or streams of drops, and the results are contradictory. In this paper, findings are presented on the effect of high and low relative humidity on collisions between freely falling drops.
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Record ID:46/41


Date:04/01/1983
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Some essential details for application of Bleck's Method to the collision-breakup equation.
Publication:J. Clim. Appl. Met., 22, 693-697.
Abstract:Computational problems have been reported in the literature regarding application of Bleck's method to the collision-breakup equation.
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Record ID:46/42


Date:01/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., Jr.
Title:Parameterization of the evolving drop-size distribution based on analytic solution of the linearized coalescence-breakup equation.
Publication:J. Atmos. Sci, 48, 1, 200-210.
Abstract:Analytic solution of the linearized coalescence-breakup equation is used as a basis for parametirizing the evolving drop-size distribution.
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Record ID:46/43


Date:06/01/1985
Subject:(46) Microphysics - Warm Cloud
Author:Carbone, R.E.
Title:Comments on 'Functional fits to some observed drop size distributions and parameterizations of rain.'
Publication:J. Atmos. Sci., 42, 1346-1348
Abstract:Willis (1984) has recently added to the body of evidence which supports a gamma distribution parameterization of raindrop spectra, relying primarily on optical spectrometer data acquired in hurricanes.
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Record ID:46/44


Date:00/00/1983
Subject:(46) Microphysics - Warm Cloud
Author:Cerni, T.A.
Title:Determination of the size and concentration of cloud drops with an FSSP.
Publication:J. Clim. and Appl. Met., 22, No. 8, 1346-1355.
Abstract:A detailed size calibration of the Forward Scattering Spectrometer Probe (FSSP) over the size ranges of interest to cloud physics (2-47 mu m) is presented.
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Record ID:46/45


Date:07/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:Chauzy, S., S. Despiau
Title:Rainfall rate and electric charge and size of raindrops of six spring showers.
Publication:J. Atmos. Sci., 37, 1619-1627.
Abstract:Two ground-based instruments were designed and built in order to accomplish present research. The first measures the electronic charge as well as the size of the individual raindrops.
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Record ID:46/46


Date:00/00/1992
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S., S.N. Whittlesey
Title:Multiple equilibrium solutions in Bleck-type models of drop coalescence and breakup.
Publication:J. Atmos. Sci., 49, 23, 3219-2324.
Abstract:One of the best ways to understand the working of a dynamical system is to construct a phase portrait that shows the equilibrium points of the system and a sufficient number of solution paths to indicate whether or not the equilibria attract or repel the solutions.
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Record ID:46/47


Date:06/15/1991
Subject:(46) Microphysics - Warm Cloud
Author:Chen, J.
Title:Turbulence-scale condensation parameterization.
Publication:J. Atmos. Sci., 48, 12, 1510-1512
Abstract:When a turbulence closure model is used for cloud simulations, the effect of turbulence-scale saturation must be taken into account in determining the turbulent buoyancy flux.
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Record ID:46/48


Date:05/15/1994
Subject:(46) Microphysics - Warm Cloud
Author:Chen, J.
Title:Predictions of saturation ratio for cloud microphysical models.
Publication:J. Atmos. Sci., 51, 1332-1338.
Abstract:The saturation development equation is solved analytically to give a solution that is more general than the existing analytical solution.
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Record ID:46/49


Date:3/1/1979
Subject:(46) Microphysics - Warm Cloud
Author:Clark, T.L., W.D. Hall
Title:A numerical experiment on stochastic condensation theory.
Publication:J. Atmos. Sci., 3, 470-483.
Abstract:A three-dimensional numerical model is used to study the effect of small-scale supersaturation fluctuations on the evolving droplet distribution in the first 150 m above cloud base.
Location:4
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Record ID:46/50


Date:07/01/1983
Subject:(46) Microphysics - Warm Cloud
Author:Clark, T.L., W.D. Hall
Title:A cloud physical parameterization method using movable basis functions: Stochastic coalescence parcel calculations.
Publication:J. Atmos. Sci., 40, No.7, 1709-1728.
Abstract:Numerical simulations of stochastic coalescence in a parcel framework are presented using a series of distribution functions.
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Record ID:46/51


Date:05/15/1989
Subject:(46) Microphysics - Warm Cloud
Author:Cooper, W.A.
Title:Effects of variable droplet growth histories on droplet size distributions. Part I: Theory.
Publication:J. Atmos. Sci., 46, 1301-1311.
Abstract:A theoretical framework is developed that permits estimation of the effects of fluctuating supersaturation on the development of cloud droplet size spectra.
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Record ID:46/52


Date:04/15/1989
Subject:(46) Microphysics - Warm Cloud
Author:Cooper, W.A., D. Baumgardner.
Title:Comment on 'The collection kernel for two falling cloud drops subjected to random perturbations in a turbulent air flow: A stochastic model.
Publication:J. Atmos. Sci., 46, 1165-1167.
Abstract:none
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Record ID:46/53


Date:09/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Cooper, W.A., M.K. Politovich
Title:Reply
Publication:J. Atmos. Sci., 46, 2752-2754.
Abstract:none
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Record ID:46/54


Date:08/01/1979
Subject:(46) Microphysics - Warm Cloud
Author:DeAlmeida, F.C.
Title:The effects of small-scale turbulent motions on the growth of a cloud droplet spectrum.
Publication:J. Atmos. Sci., 36, 8, 1557-1576.
Abstract:The effects of small-scale cloud turbulent motions on the growth of a droplet spectrum are investigated by numerically solving the stochastic collection growth equation.
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Record ID:46/55


Date:12/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:DeAlmeida, F.C., R.D. Dennett
Title:An analysis of two schemes to numerically solve the stochastic collection growth equation.
Publication:J. Atmos. Sci., 37, 2707-2711.
Abstract:The schemes for the numerical solution of the tochastic collection growth equation for cloud drops are compared.
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Record ID:46/56


Date:03/01/1985
Subject:(46) Microphysics - Warm Cloud
Author:Desalmand, F.
Title:An attempt to characterize a relationship between supersaturation spectrum, size spectrum and solubility of CCN observed over a tropical rain forest.
Publication:J. Atmos. Sci., 42, 472-477.
Abstract:A demonstration of Twomey's relation N=CSK is presented; it is significantly different from the earlier demonstration and takes into account the very small size and solubility of cloud condensation neuclei (CCN) activated at supersaturations between 0.3...
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Record ID:46/57


Date:00/00/1982
Subject:(46) Microphysics - Warm Cloud
Author:Desalmand, F., J. Bauet, R. Serpolay
Title:Influence of rainfall on the seasonal variations of cloud condensation nuclei concentrations in a sub-equatorial climate.
Publication:J. Atmos. Sci., 39, 2076-2082
Abstract:Systematic measurements of cloud condensation nuclei (CCN) concentration have been carried out in the Abidjan area from December 1977 to June 1978, at 0700 local time (corresponding to a daily maximum).
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Record ID:46/58


Date:11/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:Enukashvily, I.M.
Title:A numerical method for integrating the kinetic equation of coalescence and breakup of cloud droplets.
Publication:J. Atmos. Sci., 37, 2521-2534
Abstract:An extension of Bleck`s method and of the method of moments is developed for the numerical integration of the kinetic equation of coalescence and breakup of cloud droplets.
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Record ID:46/59


Date:10/15/1993
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G.
Title:Parameterization of the evaporation of rainfall for use in general circulation models.
Publication:J. Atmos. Sci., 50, 20, 3454-3467
Abstract:A parameterization of evaporation losses below cloud base is presented for use in general circulation models to assist in quantification of water content in the hydrological cycle.
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Record ID:46/60


Date:10/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G., Z. Levin
Title:The lognormal fit to raindrop spectra from frontal convective clouds in Israel.
Publication:J. Clim. Appl. Met., Vol. 25, 10, 1346-1363
Abstract:Measurements of rain drop size spectra in Israel were carried out over a period of two years.
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Record ID:46/61


Date:01/15/1991
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G., Z. Levin, S. Tzivion
Title:The evolution of raindrop spectra. Part III: Downdraft generation in an Axisymmetrical rainshaft model.
Publication:J. Atmos. Sci., 48, 2, 315-330
Abstract:The evolution of raindrop spectra below cloud base in subsaturated atmospheres is traced with the aid of an axisymmetrical rainshaft model which includes the detailed warm microphysical treatment presented in parts I and II of this series.
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Record ID:46/62


Date:12/01/1992
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G., A.J. Heymsvield
Title:Parameterizations of condensational growth of droplets for use in general circulation models.
Publication:J. Atmos. Sci., 49, 23, 2325-2342
Abstract:Motivated by the importance of the effective radius of the droplets to radiative transfer, this paper presents parameterization schemes, which provide a measure of r in stratiform liquid water clouds (in the -13 C to +13 C temp. range), for use in models.
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Record ID:46/63


Date:12/15/1988
Subject:(46) Microphysics - Warm Cloud
Author:Finstad, K.J., E.P. Lozowski, L. Makkonen
Title:On the median volume diameter approximation for droplet collision efficiency.
Publication:J. Atmos. Sci., 45, 4008-4012
Abstract:We examine a shortcut for calculating the overall collision efficiency of a droplet spectrum, known as the 'median volume diameter' approximation.
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Record ID:46/64


Date:08/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Fraser, A.B., C.F. Bohren
Title:Viewing the vagaries and verities of virga. Notes and correspondance.
Publication:Mon. Weather Rev., 121, 8, 2429-2430
Abstract:'Sassen and Krueger (1993) fail to distinguish between a definition and an explanation: they imagine that virga is defined as precipitation that evaporates before reaching the ground...'
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Record ID:46/65


Date:07/01/1992
Subject:(46) Microphysics - Warm Cloud
Author:Fukuta, N.
Title:Theories of competitive cloud droplet growth and their application to cloud physics studies.
Publication:J. Atmos. Sci., 49, 1107-1114
Abstract:In a rising cloud parcel, a small droplet establishes quasi-steady-state fields of vapor density p and temperature T around it...
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Record ID:46/66


Date:10/01/1990
Subject:(46) Microphysics - Warm Cloud
Author:Grotjahn, R., C. Wang
Title:Topographic linear instability on a sphere for various ridge orientations and shapes.
Publication:J. Atmos. Sci., 47, 19, 2249-2261
Abstract:The linear instability of a zonal flow passing over a large-scale mountain, having one of two orientations and two shapes, is considered via an eigenvalue/eigenvector problem using sperical coordinates in a quasi-geographic model.
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Record ID:46/67


Date:03/15/1989
Subject:(46) Microphysics - Warm Cloud
Author:Hagen, D.E., J. Schmitt, M. Trueblood, J. Carstens, D.R. White, D.J. Alofs.
Title:Condensation coefficient measurement for water in the UMR cloud simulation chamber.
Publication:J. Atmos. Sci., 46, 803-816
Abstract:A systematic series of condensation coefficient measurements of water have veen made using the University of Missouri -- Rolla cooled-wall expansion chamber which simulates the thermodymanics of cloud.
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Record ID:46/68


Date:10/01/1988
Subject:(46) Microphysics - Warm Cloud
Author:Herrera, J.R., J.J. Castro
Title:Production of cloud condensation nuclei in Mexico City.
Publication:J. Appl. Met., 27, 1189-1192
Abstract:At the first step in a long-term program oriented toward understanding the influence of air pollution on weather and climate in Mexico City, we measured the hourly variation of the atmospheric aerosol concentration active as cloud condensation nuclei (CCN) at supersaturation of 0.75%.
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Record ID:46/69


Date:00/00/1984
Subject:(46) Microphysics - Warm Cloud
Author:Heysfield, A., M. Hjelmfelt
Title:Processes of hydrometeor development in Oklahoma convective clouds.
Publication:J. Atmos. Sci., 41, 2811-2835
Abstract:This study employs in situ measurements to examine cloud conditions in which hydrometeors develop in mature Oklahoma convective clouds and to develop hypotheses as to how they are formed.
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Record ID:46/70


Date:07/01/1990
Subject:(46) Microphysics - Warm Cloud
Author:Hicks, E., C. Pontikis, A. Rigaud
Title:Entrainment and mixing processes as related to droplet growth in warm midlatitude and tropical clouds.
Publication:J. Atmos. Sci., 47, 1589-1618
Abstract:Aircraft measurements in warm continental cumuli (Voves, France, 1983) and in tradewind maritime bandclouds (Joint Hawaii Warm Rain Project, 1985) are analyzed in order to determine the influence of entrainment and mixing processes on the evolution...
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Record ID:46/71


Date:12/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Hindman, E.E.
Title:Formation and Optical properties of a warm cloud in a slow-expansion cloud chamber.
Publication:J. Atmos. Sci., 46, 3653-3663
Abstract:The formation of a warm cloud was studied in a 1.1 m-3, isothermal, slow-expansion cloud chamber. The evolution of the precloud haze droplet population into the incloud haze and cloud droplet populations was measured in unprecedented detail.
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Record ID:46/72


Date:00/00/1983
Subject:(46) Microphysics - Warm Cloud
Author:Hindman, E.E., L.F. Radke, M.W. Eltgroth
Title:Reply
Publication:J. Clim. and Appl. Met., 22, No. 8, 1474
Abstract:none
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Record ID:46/73


Date:07/01/1994
Subject:(46) Microphysics - Warm Cloud
Author:Hindman, E.E., M.A. Campbell, R.D. Borys
Title:A ten-winter record of cloud-droplet physical and chemical properties at a mountaintop site in Colorado.
Publication:J. Appl. Met., 33, 797-807
Abstract:Cloud-droplet spectra and coincident cloud water pH measurements have been made for a portion of ten consecutive winters (1983/84 - 1992/93) from clouds that enveloped Storm Peak Laboratory in northwestern Colorado; cloud water ion measurements were made for eight winters.
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Record ID:46/74


Date:07/01/1986
Subject:(46) Microphysics - Warm Cloud
Author:Hodson, M.C.
Title:Raindrop size distribution
Publication:J. Clim. Appl. Met., 1070-1074
Abstract:This paper reviews some of the published results relating to raindrop-size distributions and couples this with some of the author's results in order to show that the mathematical description can be divided into three categories.
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Record ID:46/75


Date:10/01/1982
Subject:(46) Microphysics - Warm Cloud
Author:Hudson, J.G.
Title:Correlation between surface and cloud base CCN spectra in Montana.
Publication:J. Appl. Meteor., 21, 1427-1440.
Abstract:As part of the Cooperative Convective Precipitation Experiment (CCOPE) Aerosol Measurement Program, airborne grab samples and simultaneous nearby continuous surface measurements of CCN spectra were compared.
Location:4
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Record ID:46/76


Date:00/00/1984
Subject:(46) Microphysics - Warm Cloud
Author:Hudson, J.G.
Title:Cloud condensation nucleii measurements within clouds.
Publication:J. Clim. Appl. Met., 23, No. 1, 42-51
Abstract:Measurements of the spectra of cloud condensations nucleii (CCN) within and near the boundaries of clouds are presented.
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Record ID:46/77


Date:11/01/1988
Subject:(46) Microphysics - Warm Cloud
Author:Huffman, G.J., G.A. Norman, Jr.
Title:The supercooled warm rain process and the specification of freezing precipitation.
Publication:Mon. Wea. Rev., 116, 2172-2182
Abstract:About 30% of freezing precipitation cases are observed to occur in a subfreezing atmosphere (contrary to the classical metlgin ice model). We explain these cases with the concept of the 'supercooled warm rain process' (SWRP).
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Record ID:46/78


Date:10/15/1989
Subject:(46) Microphysics - Warm Cloud
Author:Jensen, J.B., M.B. Baker
Title:A simple model of droplet spectral evolution during turbulent mixing.
Publication:J. Atmos. Sci., 2812-2829
Abstract:The mixing of cloudy, saturated air with cloud-free, subsaturated air is examined with a simple one-dimensional model of the mixing process.
Location:5
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Record ID:46/79


Date:01/01/1981
Subject:(46) Microphysics - Warm Cloud
Author:Johnson, D.B.
Title:Analytical solutions for cloud-drop concentration.
Publication:J. Atmos. Sci., 38, 215-218
Abstract:This note compated and evaluates the analytical solutions of Squires and Twomey for cloud droplet concentration.
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Record ID:46/80


Date:10/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Jones, D.M.
Title:Raindrop spectra at the ground.
Publication:J. Appl. Met., 31, 1219-1225
Abstract:Volume samples of raindrop spectra recoreded at ten widely dispersed sites from the tropics to the Aleutian Islands yeilded spectra with dominant modes in the range 0.8-1.6 mm.
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Record ID:46/81


Date:04/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Kogan, Y.L.
Title:Drop size separation in numerically simulated convective clouds and its effect on warm rain formation.
Publication:J. Atmos. Sci., 50, 1238-1253
Abstract:It is shown that, as a result of the flow diffluence at the upper levels of the cloud, droplets of different sizes move along different trajectories.
Location:3
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Record ID:46/82


Date:06/15/1994
Subject:(46) Microphysics - Warm Cloud
Author:Kogan, Y.L., W.J. Martin
Title:Parameterization of bulk condensation in numerical cloud models.
Publication:J. Atmos. Sci., 51, 1728-1839
Abstract:The accuracy of the moist saturation adjustment scheme has been evaluated using a three-dimensional explicit microphysical cloud model.
Location:7
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Record ID:46/83


Date:04/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Korolev, A.V., I.P. Mazin
Title:Zones of increased and decreased droplet concentration in stratiform clouds.
Publication:J. Appl. Met., 32, 4, 760-773
Abstract:The finescale, spatial inhomogeneity of cloud droplet concentration in stratiform clouds is studied using FSSP-100 data with 10-m or better resolution from 1700 km of cloud penetrations between +5 and -20 C.
Location:3
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Record ID:46/84


Date:04/15/1993
Subject:(46) Microphysics - Warm Cloud
Author:Kubesh, R.J., K.V. Beard
Title:Laboratory measurements of spontaneous oscillations for moderate-size raindrops.
Publication:J. Atmos. Sci., 50, 8, 1089-1098
Abstract:The natural oscillations of moderate-size raindrops were studied in a seven-story fall column using a computer-controlled generator to produce isolated water drops at terminal speed.
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Record ID:46/85


Date:08/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:Lee, I.Y., G. Hanel, H.R. Pruppacher
Title:A numerical determination of the evolution of cloud drop spectra due to condensation on natural aerosol particles.
Publication:J. Atmos. Sci., 37, 1839-1853
Abstract:The time variation in size of aerosol particles growing by condensation is studied numerically by means of an air parcel model which allows entrainment of air and aerosol particles.
Location:4
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Record ID:46/86


Date:12/15/1990
Subject:(46) Microphysics - Warm Cloud
Author:List, R., G.M. McFarquhar
Title:The evolution of three-peak raindrop size distributions in one-dimensional shaft models. Part I: Single-pulse rain.
Publication:J. Atmos. Sci., 47, 24, 2996-3006
Abstract:Pulsed input of raindrop packages at the top of one-dimensional shafts, followed by coalescence and breakup during the fall produces, when integrated over time of the whole rainfall, three-peak drop-size distributions (3PDs) at all levels throughout the shaft.
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Record ID:46/87


Date:7/1/1992
Subject:(46) Microphysics - Warm Cloud
Author:Low, T.B., R. List
Title:Collision, coalescence and breakup of raindrops. Part I: Experimentally established coalescence efficiencies and fragment size distributions in breakup.
Publication:J. Atmos. Sci., 39, 1591-1606
Abstract:The collision, coalescence and breakup of single raindrop parts were studied at terminal velocities and laboratory pressure (100 kPa) in 761 collision experiments (out of 14,000 attempts).
Location:4
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Record ID:46/88


Date:02/15/1984
Subject:(46) Microphysics - Warm Cloud
Author:Low, T.B., R. List
Title:Reply to Bradley and Stow.
Publication:J. Atmos. Sci., 41, 4, 704-706
Abstract:No abstract
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Record ID:46/89


Date:02/01/1994
Subject:(46) Microphysics - Warm Cloud
Author:Malinowski, S.P., M.Y. Leclerc, D.G. Baumgardner
Title:Fractal analyses of high-resolution cloud droplet measurements.
Publication:J. Atmos. Sci., 50, 391-413
Abstract:Fractal analyses of individual cloud droplet distributions using aircraft measurements along one-dimensional horizontal cross sections through clouds are performed.
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Record ID:46/90


Date:11/01/1986
Subject:(46) Microphysics - Warm Cloud
Author:Mather, G.K., B.J. Morrison, G.M. Morgan
Title:A preliminary assessment of the importance of coalescence in convective clouds of the Eastern Transvaal.
Publication:J. Clim. Appl. Met., 25, 1780-1784
Abstract:For the past three years, a Learjet has been making microphysical measurements in new cloud development on the flanks of multicellular storms in the eastern Transvaal area of South Africa.
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Record ID:46/91


Date:09/01/1981
Subject:(46) Microphysics - Warm Cloud
Author:McBride, J.L.
Title:An analysis of diagnostic cloud mass flux models
Publication:J. Atmos. Sci., 38, 1977-1990
Abstract:The use of the Akakawa-Schubert cloud model to diagnose cloud mass fluxes from the large-scale budget is becoming an increasingly popular technique in observational tropical meteorology.
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Record ID:46/92


Date:10/01/1981
Subject:(46) Microphysics - Warm Cloud
Author:McBride, J.L.
Title:An analysis of diagnostic cloud mass flux models.
Publication:J. Atmos. Sci., 38, 1977-1990
Abstract:The use of the Arakawad-Schubert cloud model to diagnose cloud mass fluxes from the large-scale budget is becoming an increasingly popular technique in observational tropical meteorology.
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Record ID:46/93


Date:10/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:McFarquhar, G.M., R. List
Title:The raindrop mean free path and collision rate dependence on Raintree for three-peak equilibrium and Marshall-Palmer distributions.
Publication:J. Atmos. Sci., 48, 1999-2003
Abstract:Using the scaling of the coalescence and breakup equation, it is shown that for equilibrium distributions, and in particular for three-peak equilibrium (3PEDs), the mean free time and mean free path between raindrop...
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Record ID:46/94


Date:03/01/1983
Subject:(46) Microphysics - Warm Cloud
Author:Mossop, S.C.
Title:Intercomparison of instruments used for measurement of cloud drop concentration and size distribution.
Publication:J. Clim. Appl. Met., 22, 419-428
Abstract:Measurements of drop concentration and size distribution with the Clague droplet gun and the Forward Scattering Spectrometer Probe in 21 cumulus clouds on five days show no evidence of systematic differences between the two instruments.
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Record ID:46/95


Date:03/01/1984
Subject:(46) Microphysics - Warm Cloud
Author:Ochs, H.T., III, K.V. Beard
Title:Laboratory measurements of collection efficiencies for accretion.
Publication:J. Atmos. Sci., 41, 5, 863-867
Abstract:Collection efficiencies for accretion were measured for six pairs of nearly uncharged drops.
Location:4
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Record ID:46/96


Date:07/01/1985
Subject:(46) Microphysics - Warm Cloud
Author:Ochs, H.T., III, J.R. Holton
Title:Effect of coalescence efficiencies on the formation of precipitation.
Publication:J. Atmos. Sci., 42, 1451-1454
Abstract:A closed parcel model which simulates condensation, collection and breakup was used to evaluate the effects of recently measured collection efficiencies on precipitation development.
Location:5
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Record ID:46/97


Date:04/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Ochs, H.T., III, D.E. Schaufelberger, J.Q. Feng
Title:Improved coalescence efficiency measurements for small precipitation drops.
Publication:J. Atmos. Sci., 48, 7, 946-951
Abstract:A previously unreported feature of the coalescence of water drops was observed for an isolated pair of drops (R=275 um and r=200 um) falling at terminal velocity through nearly saturated air.
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Record ID:46/98


Date:00/00/1983
Subject:(46) Microphysics - Warm Cloud
Author:Parungo, F.P.
Title:Comments on 'Measurements of cloud nucleii in the effluents from launches of liquid- and solid-fuel rockets.'
Publication:J. Clim. & Appl. Met., 22, 8, 1472-1473
Abstract:none
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Record ID:46/99


Date:00/00/1992
Subject:(46) Microphysics - Warm Cloud
Author:Personne, P., J.L. Brenguier, J.P. Pinty, Y. Pointin
Title:Comparative study and calibration of sensors for the measurement of the liquid water content of clouds with small droplets.
Publication:J. Appl. Met., 21, 189-196
Abstract:Measurements of cloud liquid content made with various probes reveal a disagreement between their results.
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Record ID:46/100


Date:07/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Pontikis, C.A., E.M. Hicks
Title:Droplet activation as related to entrainment and mixing in warm tropical maritime clouds.
Publication:J. Atmos. Sci., 50, 13, 1888-1896
Abstract:Instrumented aircraft 10-Hz data collected during the Joint Hawaii Warm Rain Project (1985) have been used to investigate CCN activation in clouds at levels far from cloud base and to infer the relation with clear air entrainment and mixing.
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Record ID:46/101


Date:08/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Rauber, R.M., K.V. Beard, B.M. Andrews
Title:A mechanism for giant raindrop formation in warm, shallow convective clouds.
Publication:J. Atmos. Sci., 48, 1791-1797
Abstract:Giant raindrops (4-8 mm diameter) have been observed recently within warm convective rainbands with depths -1
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Record ID:46/102


Date:00/00/1982
Subject:(46) Microphysics - Warm Cloud
Author:Rinehart, R.E.
Title:Out-of-level instruments: Errors in hydrometeor spectra and precipitation measurements.
Publication:J. Clim. & Appl. Met., 22, 8, 1404-1410
Abstract:Meteorological instruments which are designed to measure the size spectra of hydrometeors such as hailstones or raindrops or instruments designed to measure cumulative precipitation such as raingages can produce errors if they are not installed and maintained with their sensing surface level.
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Record ID:46/103


Date:02/15/1984
Subject:(46) Microphysics - Warm Cloud
Author:Robinson, N.F.
Title:The efficient numerical calculation of condensational cloud growth.
Publication:J. Atmos. Sci., 41, 4, 698-700
Abstract:A modified Runge-Kutta integration technique is applied to condensational cloud droplet growth calculations, and the use of variable time steps is discussed.
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Record ID:46/104


Date:05/01/1990
Subject:(46) Microphysics - Warm Cloud
Author:Rogers, J.R., R.H. Davis
Title:The effects of van der Waals attractions on cloud droplet growth by coalescence.
Publication:J. Atmos. Sci., 47, 1075-1080
Abstract:The inclusion of van der Waals attractions in the interaction between cloud droplets has been recently shown to significantly increase the collision efficiencies of the smaller droplets.
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Record ID:46/105


Date:00/00/1989
Subject:(46) Microphysics - Warm Cloud
Author:Rogers, R.R.
Title:Raindrops collision rates
Publication:J. Atmos. Sci., 46, 2469-2472
Abstract:none
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Record ID:46/106


Date:08/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Sassen, K., S.K. Krueger
Title:Toward an empirical definition of virga: Comments on 'Is virga rain that evaporates before reaching the ground?' Notes and correspondence.
Publication:Mon. Weather Rev., 121, 8, 2426-2428
Abstract:None. Traditionally, virga has been viewed simply as falling ice or water particles that have failed to reach the ground.
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Record ID:46/107


Date:07/01/1993
Subject:(46) Microphysics - Warm Cloud
Author:Smith, P.L., Z. Liu, J. Joss
Title:A study of sampling-variability effects in raindrop size observations.
Publication:J. Appl. Met., 32, 7, 1259-1269
Abstract:Because of the randomness associated with sampling from a population of raindrops, variations in the data reflect some undermined mixing of sampling variability and inhomogeneity in the precipitation.
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Record ID:46/108


Date:12/01/1986
Subject:(46) Microphysics - Warm Cloud
Author:Song, N.
Title:A numerical study of two-dimensional, stationary warm rain processes by a one-dimensional, time-dependent model.
Publication:Report No. AS 154, Dept. of Atmos. Sci., Univ. of Wyoming
Abstract:This study describes a technique for numerical simulation of a stationary, 2D laminar flow process.
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Record ID:46/109


Date:04/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C.
Title:Growth of cloud drops by condensation: A criticism of currently accepted theory and a new approach.
Publication:J. Atmos. Sci., 46, 869-887
Abstract:The currently accepted theory of the growth of cloud drops by condensation employs an equation for the rate of increase of drop mass and an equation for the supersaturation.
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Record ID:46/110


Date:10/01/1992
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C., J.L. Coen
Title:New explicit equation for the accurate calculation of the growth and evaporation of hydrometeors by the diffusion of water vapor.
Publication:J. Atmos. Sci., 49, 1643-1651
Abstract:The traditional explicit growth equation has been widely used to calculate the growth and evaporation of hydrometeors by the diffusion of water vapor.
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Record ID:46/111


Date:00/00/1980
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C., R.E. Passarelli
Title:Analytical solutions to simple models of condensation and coalescence.
Publication:J. Atmos. Sci., 37, 3, 612-621
Abstract:The kinetic equation for the evolution of particle size spectra by condensation and coalescence is considered.
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Record ID:46/112


Date:00/00/1982
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C.
Title:A simple model of particle coalescence and breakup.
Publication:J. Atmos. Sci., 39, 1317-1322
Abstract:A simple model of the evolution of particle size distributions by coalescence and spontaneous and binary disintegration is formulated.
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Record ID:46/113


Date:04/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Stith, J.L., M.K. Politovich
Title:Observations of the effects of entrainment and mixing on the droplet size spectra in a small cumulus.
Publication:J. Atmos. Sci., 46, 908-919
Abstract:Sulfur hexaflouride was released at the base of a small nonprecipitating, warm cumulus to study cloud mixing and entrainment processes.
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Record ID:46/114


Date:10/01/1991
Subject:(46) Microphysics - Warm Cloud
Author:Stow, C.D., S.G. Bradley, K. Paulson, L. Couper
Title:The simultaneous measurement of rainfall intensity, drop-size distribution, and the scattering of visible light.
Publication:J. Appl. Met., Vol. 30, 1422-1435
Abstract:Field measurements were made of the attenuation of a low-power He-Ne laser beam over a 272m path.
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Record ID:46/115


Date:00/00/1982
Subject:(46) Microphysics - Warm Cloud
Author:Strapp, J.W., R.S. Schemenauer
Title:Calibrations of Johnson-Williams liquid water content meters in a high-speed icing tunnel.
Publication:J. Appl. Met., 21, 98-102
Abstract:Wind tunnel tests have provided calibrations and intercomparisons of 14 Johnson-Williams (J-W) cloud liquid water content (LWC) measuring devices with 23 sensor heads from 10 research organizations.
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Record ID:46/116


Date:10/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:Tag, P.M.
Title:On the diagnosis and conservation of energy during condensation. Notes and correspondence.
Publication:J. Atmos. Sci., 37, 2347-2351
Abstract:The diagnosis and conservation of energy during condensation is examined.
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Record ID:46/117


Date:02/01/1981
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T.
Title:Warm rain study in Hawaii - rain initiation.
Publication:J. Atmos. Sci., 38, 347-369
Abstract:More than 300 hours of aircraft flights were conducted in Hawaii from 1977 to 1979 to study precipitation mechanisms in warm rain.
Location:3
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Record ID:46/118


Date:02/01/1983
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T., T. Endoh
Title:Ion-drop interaction during drop evaporation.
Publication:J. Atmos. Sci., 40, 463-468
Abstract:As a basic experiment in warm cloud electrification, evaporating large drops were studied as they floated in an ion-rich environment in a verticle wind tunnel.
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Record ID:46/119


Date:09/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Telford, J.W.
Title:Comments on 'Variability of the Supersaturation in Cumulus Clouds.'
Publication:J. Atmos. Sci., 46, 2748-2751
Abstract:none
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Record ID:46/120


Date:11/01/1987
Subject:(46) Microphysics - Warm Cloud
Author:Tzivion, S., G. Feingold, Z. Levin
Title:An efficient numerical solution to the stochastic collection equation.
Publication:J. Atmos. Sci., 44, 3139-3149
Abstract:A new accurate efficient method for solving the stochastic collection equation (SCE) is proposed. The SCE is converted to a set of moment equations in categories using a new analytical form of Bleck's approach.
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Record ID:46/121


Date:11/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:S. Du, Wilson, J.D.
Title:Modeling the effect of turbulence on the collision of cloud droplets.
Publication:J. Atmos. Sci., 52, 22, 3849-3856
Abstract:From an analysis of scales in the cloud droplet collision problem, the authors infer that a trajectory model that is to be capable of predicting collisions between droplets of all possible sizes should be of second-order, that is, should explicitly model particle acceleration.
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Record ID:46/122


Date:11/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Brown, P.S. Jr.
Title:Structural stability of the coalescence/breakup equation.
Publication:J. Atmos. Sci., 52, 22, 3857-3865.
Abstract:An analysis of the structural stability of the coalescence/breakup equation is performed to determine the degree to which changes in the equation's formulation can affect the solution.
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Record ID:46/123


Date:11/15/1995
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V, H.T. Ochs III
Title:Collisions between small precipitation drops. Part II: Formulas for coalescence, temporary coalescence, and satellites.
Publication:J. Atmos. Sci., Vol. 52, 22, 3977-3996
Abstract:Collisions between small precipitation drops in free fall were analyzed for sizes applicable to self-collection, the process that controls the spreading of precipitatin drops to larger sizes.
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Record ID:46/124


Date:11/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Tzivion, S., G. Feingold, Z. Levin
Title:The evolution of raindrop spectra. Part II: Collisional collection/breakup and evaporation in a rainshaft.
Publication:J. Atmos. Sci., 46, 3312-3327.
Abstract:The evolution of raindrop spectra with altitude through collision collection/breakup sedimentation and evaporation is presented. Two moment treatment of sedimentation and evaporation is developed to complement Part I of this series.
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Record ID:46/125


Date:05/01/1985
Subject:(46) Microphysics - Warm Cloud
Author:Valdez, M.P., K.C. Young
Title:Number fluxes in equilibrium raindrop populations: A Markov chain analysis.
Publication:J. Atmos. Sci., 42, 1024-1036
Abstract:Four raindrop distributions at equilibrium are studied using a Markov chain model adapted from the cloud parcel model of Young. The model uses collisional drop breakup as specified by Low and List.
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Record ID:46/126


Date:00/00/1984
Subject:(46) Microphysics - Warm Cloud
Author:Valioulis, I.A., J. List
Title:A numerical evaluation of the stochastic completeness of the kinetic coagulation equation.
Publication:J. Atmos. Sci., 41, 2516-2529
Abstract:The stochastic completeness of the kinetic coagulation equation depends on the extent of correlations between particle properties. Such correlations are induced by the coalescence process that causes spatial inhomogeneities in the number concentration of the particles...
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Record ID:46/127


Date:12/15/1990
Subject:(46) Microphysics - Warm Cloud
Author:Verlinde, J., P.J. Flateau, W.R. Cotton
Title:Analytical solutions to the collection growth equation: Comparisons with approximate methods and application to cloud microphysics parameterization schemes.
Publication:J. Atmos. Sci., 47, 24, 2871-2880
Abstract:A closed form solution for the collection growth equation as used in bulk microphysical parameterizations is derived. Although the general form is mathematically complex, it can serve as a benchmark for testing a variety of approximations.
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Record ID:46/128


Date:04/01/1983
Subject:(46) Microphysics - Warm Cloud
Author:Wang, P-K.
Title:On the definition of collision efficiency of atmospheric particles.
Publication:J. Atmos. Sci., 40, 1051-1052
Abstract:none
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Record ID:46/129


Date:07/01/1983
Subject:(46) Microphysics - Warm Cloud
Author:White, W.H.
Title:On the form of stationary size distributions established by coagulation and sedimentation.
Publication:J. Atmos. Sci., 40, 7, 1855-1858
Abstract:In stationary solutions of the equations for nucleation, coagulation and sedimentation, the concentration of large particles falls off more strongly than any power of particle size.
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Record ID:46/130


Date:00/00/1982
Subject:(46) Microphysics - Warm Cloud
Author:Williams, R., P.J. Wojtowicz
Title:A simple model for droplet size distribution in atmospheric clouds.
Publication:J. Appl. Met., 21, 1042-1044
Abstract:We have used the basic probability methods of statistical mechanics to derive a droplet-size distribution function for atmospheric clouds. These methods apply to systems that have well-defined constraints, but for which microscopic processes cannot easily be followed in detail.
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Record ID:46/131


Date:05/01/1984
Subject:(46) Microphysics - Warm Cloud
Author:Willis, P.T.
Title:Functional fits to some observed drop size distributions and parameterization of rain.
Publication:J. Atmos. Sci., 42, 9, 1648-1661
Abstract:A data sample of optical spectrometer measurements that were obtained in two tropical cyclones is analyzed. The resultant drop size distributions are normalized and their shape is found to exhibit some curvature -- departure from exponentiality.
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Record ID:46/132


Date:06/01/1985
Subject:(46) Microphysics - Warm Cloud
Author:Willis, P.T.
Title:Reply to 'Comments on 'Functional fits to some observed drop size distributions and parameterizations of rain.''
Publication:J. Atmos. Sci., 42, 1349-1350
Abstract:0
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Record ID:46/133


Date:01/01/1989
Subject:(46) Microphysics - Warm Cloud
Author:Willis, P.T., P. Tattleman
Title:Drop-size distributions associated with intense rainfall.
Publication:J. Appl. Met., 28, 3-15
Abstract:The probability of occurrence of extreme rainfall rates is reviewed. The drop-size distributions associated with a range of high rainfall rates are examined using data from tropical storms and hurricanes.
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Record ID:46/134


Date:07/15/1993
Subject:(46) Microphysics - Warm Cloud
Author:Young, K.C.
Title:Effects of simplification of the Kohler equation on the activation of CCN in an updraft.
Publication:J. Atmos. Sci., 50, 14, 2314-2317
Abstract:The effects of simplification in the derivation of the Kohler equation describing the equilibrium saturation ratio for solution drops as a function of size on the activation of a population of CCN in an updraft are examined.
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Record ID:46/135


Date:07/01/1992
Subject:(46) Microphysics - Warm Cloud
Author:Young, K.C., A.J. Warren
Title:A reexamination of the equilibrium supersaturation curve for soluble particles.
Publication:J. Atmos. Sci., 49,1138-1143
Abstract:In his derivation of the equilibrium supersaturation curve for soluble particles, Kohler trated the van't Hoff factor as a constant. McDonald points out that this factor is actually a function of the droplet modality.
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Record ID:46/136


Date:00/00/1994
Subject:(46) Microphysics - Warm Cloud
Author:Zawadzki, I., E. Monteiro, F. Fabry
Title:The development of drop size distributions in light rain.
Publication:J. Atmos. Sci., 51, 1100-1113
Abstract:A model of rain development based on the quasi-stochastic coalescence equation and including the sedimentation of drops has been used to study the formation of drop size distributions in conditions of weak updraft.
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Record ID:46/137


Date:1/1/1987
Subject:(46) Microphysics - Warm Cloud
Author:Nicholls, S.
Title:A model of drizzle growth in warm, turbulent, stratiform clouds.
Publication:Q.J.R. Meteor. Soc., 113, 1141-1170
Abstract:A model to describe the growth of precipitation sized drops in layers of warm, stratiform cloud is developed which combines the effects of stochastic turbulent diffusion with explicit microphysical calculations.
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Record ID:46/138


Date:1/1/1996
Subject:(46) Microphysics - Warm Cloud
Author:Hobbs, P.V., A.L. Rangno
Title:Precipitation from a maritime cloud layer with very low droplet concentrations.
Publication:Atmos. Res., 40, 99-107
Abstract:In very clean air the total concentrations of droplets in maritime stratiform clouds can be very low. Interestingly, these clouds sometimes precipitate. In this note we describe such a case and the meteorological conditions that accompanied it.
Location:7
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Record ID:46/139


Date:6/1/1995
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T., K. Suzuki, M. Orita, M. Tokuno, R. de la Mar
Title:Videosonde observations of precipitation processes in equatorial cloud clusters.
Publication:J. Met. Soc. Japan, 73, 2B, 509-534
Abstract:Twenty-one Precipitation Particle Image Sensors (PPIS) were launched into various clouds at Manus Is., Papua New Guinea (2S, 147E) during the Tropical Ocean and Global Atmosphere-Coupled Ocean Atmosphere Response Experiments (TOGA-COARE) international project. Cloud system development varied with the vertical humidity profiles. These seemed to form in relation to areal convergence and divergence.
Location:7
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Record ID:46/140


Date:12/1/1995
Subject:(46) Microphysics - Warm Cloud
Author:T. Takahashi, K. Suzuki, C. Wang, C. Guo
Title:Precipitation mechanisms of cloud systems developed in a semi-arid area of Pingliang, China: Videosonde Observations.
Publication:J. Met. Soc. Japan, 73, 6, 1191-1211
Abstract:Precipitation mechanisms were investigated in summer rainfall in the semi-arid region of Pingliang, China as part of the Heihe River Field Experiment (HEIFE). Evolution of precipitation particles was investigated using videosonde images.
Location:7
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Record ID:46/141


Date:01/01/1995
Subject:(46) Microphysics - Warm Cloud
Author:Curic, M., D. Janc
Title:On the sensitivity of the continuous accretion rate equation used in bulk-water parameterization schemes.
Publication:Atmos. Res., 39, 313-332
Abstract:The analytical solutions of the continuous accretion rate equation are compared regarding two different size distributions for cloud and rain water, two hail terminal velocities for different turbulent regimes and two solution types.
Location:7
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Record ID:46/142


Date:03/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Gultepe, I., G.A. Isaac, W.R. Leaitch, C.M. Banic
Title:Parameterizations of marine stratus microphysics based on in situ observations: Implications for GCMs.
Publication:J. Climate, 3, 345-357
Abstract:Airborne observations conducted in marine stratus over the east coast of Canada during the North Atlantic Regional Experiment in the summer of 1993 are used to develop cloud microphysical parameterization schemes for general circulation models.
Location:7
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Record ID:46/143


Date:2/9/1996
Subject:(46) Microphysics - Warm Cloud
Author:Gultepe, I., G.A. Isaac
Title:The relationship between cloud droplet and aerosol number concentrations for climate models.
Publication:Submitted to Int. J. Climatology, 1996
Abstract:Aerosols have an effect on cloud droplet size and concentration, and thus affect the radiative properties of clouds. The purpose of this study is to develop parameterized equations between droplet number concentration (Nd) and total aerosol number concentrations (Na) for use in Numerical Weather Prediction Models and Global Climate Models.
Location:8
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Record ID:46/144


Date:7/1/1996
Subject:(46) Microphysics - Warm Cloud
Author:Reisen, T., Z. Levin, S. Tzivion
Title:Rain production in convective clouds as simulated in axisymmetric model with detailed microphysics. Part II: Effects of varying drops and ice inititiation.
Publication:J. Atmos. Sci., 53, 13, 1815-1837
Abstract:This paper presents an evaluation of the relative importance of the warm versus cold processes in convective clouds and their relative contribution to the development of rain.
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Record ID:46/145


Date:07/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Koziol, A.S., H.G. Leighton
Title:The effect of turbulence on the collision rates of small cloud drops.
Publication:J. Atmos. Sci., 53, 13, 1910-1920
Abstract:The significance of the influence of turbulence on collisions and coalescence of small cloud droplets is still an outstanding problem.
Location:7
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Record ID:46/146


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Kulmala, M., P. Korhonen, T. Vesala, H.-C. Hansson, K. Noone, B. Svenningsson
Title:The effect of hygroscopicity on cloud droplet formation.
Publication:Tellus, 48B, 347-360
Abstract:The effects of particle hygroscopicity and the availability of condensable material (other than water) in the gas phase on cloud droplet formation and the radiative properties of clouds have been studied using an adiabatic air parcel model with detailed multicomponent condensation.
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Record ID:46/147


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Fukuta, N., N. Xu
Title:Nucleation-droplet growth interactions and microphysical property development in convective clouds.
Publication:Atmos. Res., 41, 1-22
Abstract:In the microphysics-dynamics interaction above the convective cloud base, the analytic solutions with the Maxwellian droplet growth system obtained by Squires (1958) and Fukuta (1993), without including the relationship of the cloud condensation nucleus (CCN) activity spectrum, are shown to be partial or diagnostic solutions and that of Twomey (1959) as a complete or prognostic solution within its approximation.
Location:7
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Record ID:46/148


Date:11/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Konopka, P.
Title:A reexamination of the derivation of the equilibrium supersaturation curve for soluble particles
Publication:J. Atmos. Sci., 53, 3157-3163
Abstract:Following the methods known from the heteomolecular homogeneous nucleation theory, a reexamination of the Kohler equation is presented
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Record ID:46/149


Date:09/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Kogan, Y.L.,A. Shapiro
Title:The simulation of a convective cloud in a 3D model with explicit microphysics. Part II: Dynamical and microphysical aspects of cloud merger.
Publication:J. Atmos. Sci., 53, 17, 2525-2545
Abstract:The development and merger of pairs of convective clouds in a shear-free environment were simulated in an explicit microphysical cloud model.
Location:7
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Record ID:46/150


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Khain, A.P., M.B. Pinsky
Title:Influence of turbulence on the drop coalescence in clouds and on rain formation.
Publication:Proc., 12th Conf. on Clouds and Precipitation, Vol. 1, 19-23 Aug. 1996, Zurich, Switzerland, 93-96.
Abstract:In spite of the complexity of the microphysical processes, the geometry of drop collision is assumed to be rather simple: the larger drop falls faster that drops of a smaller mass, and collisions take place in the vertical direction due to the difference in their terminal fall velocities, which are considered to be the function of the drop mass only.
Location:7
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Record ID:46/151


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Vohl, O., S.K. Mitra, H.R. Pruppacher
Title:A wind tunnel study of the effect of turbulence on the collisional growth of water drops.
Publication:Proc., 12th Int. Conf. on Clouds and Precipitation, Zurich, Switzerland, Vol. 1, 49-52, 1996
Abstract:Observations show the intensity of turbulence in clouds varies widely between energy dissipation rates of 20 up to 2 x 10_3 cm_2 s_-3 depending on the type of cloud and their age.
Location:7
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Record ID:46/152


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M.B., A.P. Khain, Z. Levin
Title:The effect of turbulence on the broadening of the droplet spectrum in clouds at the initial stage of their evolution.
Publication:Proc., 12th Conf. on Clouds and Precipitation, Vol. 1, 19-23 Aug. 1996, Zurich, Switzerland, 45-48.
Abstract:Observed size distributions of droplets are considerably broader than those computed for ascending isolated air parcels cooled adiabatically.
Location:7
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Record ID:46/153


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Considine, G., J.A. Curry
Title:A statistical model of drop-size spectra for stratocumulus clouds.
Publication:Q.J.R. Met. Soc., 122, 611-634
Abstract:The purpose of this work is to present a simplified model of cloud-droplet spectra that can be used as a tool for interpreting cloud microphysical observations in boundary-layer clouds, and as a way to begin quantifying the couplings between cloud microphysics, dynamics and radiative properties for eventual use in cloud parameterizations.
Location:7
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Record ID:46/154


Date:2/15/1997
Subject:(46) Microphysics - Warm Cloud
Author:Blyth, A.M., R.E. Benestad, P.R. Krehbiel, J. Latham
Title:Observations of supercooled raindrops in New Mexico summertime cumuli.
Publication:J. Atmos. Sci., 54, 4, 569-575
Abstract:Observations made in 1987 with the NCAR King Air aircraft and in 1993 with the New Mexico Institute of Mining and Technology dual-polarization radar have revealed the presence of supercooled raindrops in some New Mexico summertime cumulus clouds.
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Record ID:46/155


Date:2/1/1997
Subject:(46) Microphysics - Warm Cloud
Author:Szumowski, M.J., R.M. Rauber, H.T. Ochs III, L.J. Miller
Title:The microphysical structure and evolution of Hawaiian rainband clouds. Part I: Radar Observations of rainbands containing high reflectivity cores.
Publication:J. Atmos. Sci., 54, 3, 369-385
Abstract:Radar reflectivity factors exceeding 60 dBZ are documented within shallow (0 C), summertime tropical rainbands offshore of the island of Hawaii.
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Record ID:46/156


Date:01/01/1997
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M., A. Khain
Title:Formation of inhomogeneity in drop concentration induced by the inertia of drops falling in a turbulent flow, and the influence of the inhomogeneity on the drop-spectrum broadening
Publication:Q.J.R. Meteorol. Soc., 123, 165-186
Abstract:The mechanisms of drop-concentration inhomogeneity formation are studied using both a numerical simulation with a model of isotropic and inhomogeneous turbulence, and analytical methods
Location:7
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Record ID:46/157


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Khain, A., I. Sednev
Title:Simulation of precipitation formation in the Eastern Mediterranean coastal zone using a spectral microphysics cloud ensemble model
Publication:Atmos. Res., 43, 77-110
Abstract:The rain event at the end of November 1991 in the Eastern Mediterranean was simulated using a 2-D cloud ensemble model
Location:7
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Record ID:46/158


Date:10/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., R.L. Reinhardt
Title:An analysis of cloud drop growth by collection: Part II. Single initial distributions.
Publication:J. Atmos. Sci., 31, 1825-1831
Abstract:The initial spreading of a cloud droplet distribution, its time of formation and placement of the second maximum, and the value of the minimum between the two maxima are systematically related to the mean mass and standard deviation of the initial distribution.
Location:3
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Record ID:46/159


Date:10/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., R.L. Reinhardt
Title:An analysis of cloud drop growth by collection: Part I. Double distributions.
Publication:J. Atmos. Sci., 31, 1814-1824
Abstract:A new, highly accurate, yet fast method for the numerical solution of the stochastic collection equation is described.
Location:3
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Record ID:46/160


Date:1/1/1994
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M.B., A.P. Khain
Title:Initiation of drop velocity oscillations during their fall in a vertically sheared flow with embedded volocity fluctuation.
Publication:Geophys., Astrophys., Fluid Dynamics, 78, 169-192
Abstract:Drops' fall in the horizontal sheared flow with an embedded 'frozen' sinusoidal volocity fluctuation is studied.
Location:3
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Record ID:46/161


Date:1/1/1995
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M., A. Khain
Title:A model of a homogeneous isotropic turbulent flow and its application for the simulation of cloud drop tracks.
Publication:Geophys., Astrophys., Fluid Dynamics, 81, 33-55
Abstract:A model of a homogeneous isotropic flow is presented.
Location:3
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Record ID:46/162


Date:11/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., R.L. Reinhardt
Title:An analysis of cloud drop growth by collection: Part III. Accretion and self-collection.
Publication:J. Atmos. Sci., 31, 2118-2126
Abstract:Accretion is shown to have a narrowing effect on the drop size distribution while the newly defined processes 'large hydrometeor self-collection' is shown to be responsible for the rapid growth of large hydrometeors and observed broadening of drop distribution.
Location:3
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Record ID:46/163


Date:11/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., R.L. Reinhardt
Title:An analysis of cloud drop growth by collection: Part IV. A new parameterization.
Publication:J. Atmos. Sci., 31, 8, 2127-2135
Abstract:A new parameterization of cloud particle growth combines the effects of accretion and self collection, and frees the large-hydrometeor water mass and spectral moments to grow independently.
Location:3
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Record ID:46/164


Date:7/1/1997
Subject:(46) Microphysics - Warm Cloud
Author:Straka, J.M., E.N. Rasmussen
Title:Toward improving microphysical parameterizations of conversion processes.
Publication:J. Appl. Met., 36, 896-902
Abstract:Prognostic equations are proposed for use in gridpoint models for the purpose of providing Lagrangian information without the need for computing Lagrangian trajectories.
Location:2
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Record ID:46/165


Date:06/01/1978
Subject:(46) Microphysics - Warm Cloud
Author:Rokicki, M.L., and K.C. Young
Title:The intiation of precipitation in updrafts.
Publication:J. Appl. Met., 17, 745-754
Abstract:The initial stages of the formation of ice precipitation in uniform updrafts under natural and seeded conditions are examined using a detailed microphysical model of parcel ascent.
Location:7
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Record ID:46/166


Date:10/15/1997
Subject:(46) Microphysics - Warm Cloud
Author:Liu, Q., Y.L. Kogan, D.K. Lilly, M.P. Khairoutdinov
Title:Variational optimization method for calculation of cloud drop growth in a Eulerian drop-size framework.
Publication:J. Atmos. Sci., 54, 2493-2504
Abstract:A VO method that requires specification of only one variable in each bin size for condensation and evaporation calculations in an Eulerian drop-size framework is proposed.
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Record ID:46/167


Date:11/15/1997
Subject:(46) Microphysics - Warm Cloud
Author:Hudson, J.G., S.S. Yum
Title:Droplet spectral broadening in marine stratus.
Publication:J. Atmos. Sci., 54, 2642-2654
Abstract:Broadening of the cloud droplet (diameter < 50 um) spectrum with increased droplet size was found to depend on the vertical profiles of cloud water.
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Record ID:46/168


Date:1/15/1998
Subject:(46) Microphysics - Warm Cloud
Author:Szumowski, M.J., R.M. Rauber, H.T. Ochs III, K.V. Beard
Title:The microphysical structure and evolution of Hawaiian rainband clouds. Part II: Aircraft measurements within rainbands containing high reflectivity cores.
Publication:J. Atmos. Sci., 55, 2, 208-226
Abstract:The microphysical structure of high reflectivity cores and surrounding weaker echo regions in Hawaiian rainbands is documented using aircraft data.
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Record ID:46/169


Date:1/15/1998
Subject:(46) Microphysics - Warm Cloud
Author:Jameson, A.R., A.B. Kostinski
Title:Fluctuation properties of precipitation. Part II: Reconsideration of the meaning and measurement of raindrop size distributions.
Publication:J. Atmos. Sci., 55, 283-294
Abstract:For M drop size categories, rain is frequently viewed simply as the superposition of M, statistically independent Poisson-distributed drop fluxes each described by its own mean concentration.
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Record ID:46/170


Date:1/1/1994
Subject:(46) Microphysics - Warm Cloud
(47) Miscellaneous
Author:Cloud and Aerosol Research Group
Title:Contributions from the Cloud and Aerosol Research Group, Collection of Reprints XXXV
Publication:Univ. of Washington, Dept. of Atmos. Sci., Seattle, WA 98195-1640
Abstract:Collection of published articles
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Record ID:46/171


Date:1/1/1998
Subject:(46) Microphysics - Warm Cloud
Author:Takahaski, T., T. Kawang
Title:Numerical sensitivity study of rainband precipitation and evolution.
Publication:J. Atmos. Sci., 55, 57-87
Abstract:Using a deep, two-dimensional rainband model, the authors examined the effect of different microphysical treatments on rain evolution and precipitation processes in an otherwise fixed environment.
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Record ID:46/172


Date:01/01/1997
Subject:(46) Microphysics - Warm Cloud
Author:Defelice, T.P., V.K. Saxena, S. Yu
Title:On the measurements of cloud condensation nuclei at Palmer Station, Antarctica
Publication:Atmos. Environ., 31, 4039-4044
Abstract:Cloud condensation nuclei (CCN) spectral measurements are among the recent priorities for the study of aerosol/climate interactions
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Record ID:46/173


Date:3/1/1998
Subject:(46) Microphysics - Warm Cloud
Author:Laaksonen, A., P. Korhonen, M. Kulmala, R.J. Charlson
Title:Modification of the Kohler equation to include soluble trace gases and slightly soluble substances.
Publication:J. Atmos. Sci., 55, 853-862
Abstract:A generalized reformulation of the Kohler theory to include the effect of soluble gases and slightly soluble aerosol substances is presented.
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Record ID:46/174


Date:2/15/1998
Subject:(46) Microphysics - Warm Cloud
Author:Liu, Y., J. Hallett
Title:On size distribution of cloud droplets growing by condensation: A new conceptual model.
Publication:J. Atmos. Sci., 55, 527-536
Abstract:Observed turbulence and fluctuating microphysical properties of clouds lead the authors to assume that a cloud droplet size distribution results from a large number of random events associated with turbulence and to consider a droplet system with fluctuating cloud droplet size distributions constrained by conservation laws.
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Record ID:46/175


Date:06/01/1998
Subject:(46) Microphysics - Warm Cloud
Author:Shaw, R.A., W. C. Reade, L.R. Collins, J. Verlinde
Title:Preferential concentration of cloud droplets by turbulence: Effects on the early evolution of cumulus cloud droplet spectra
Publication:J. Atmos. Sci., 55, 1965-1976
Abstract:A mechanism is presented, based on the inherent turbulent nature of cumulus clouds, for the broadening of cloud droplet spectra during condensational growth.
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Record ID:46/176


Date:6/2/1998
Subject:(46) Microphysics - Warm Cloud
Author:Walko, R.L., W.R. Cotton, G. Feingold, B. Stevens
Title:Efficient computation of vapor and heat diffusion between hydrometeors in a numerical model.
Publication:Atmos. Res., submitted
Abstract:We present an algorithm for representing diffusion of sensible heat and vapor between hydrometeors and air that is formulated from implicit numerical equations and is therefore stable for long numerical model timesteps, but is solved explicitly without requiring iteration.
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Record ID:46/177


Date:3/1/1982
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Johnson, D.B.
Title:The role of giant and ultragiant aerosol particles in warm rain initiation
Publication:J. Atmos. Sci., 39, 448-460
Abstract:Giant and ultragiant aerosol particles can play an important role in warm rain initiation.
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Record ID:46/178


Date:8/1/1998
Subject:(46) Microphysics - Warm Cloud
Author:Lavergnat, J., P. Gole
Title:A stochastic raindrop time distribution model.
Publication:J. Appl. Met., 37, 8, 805-818
Abstract:A disdrometer simultaneously measuring time of arrival and size of raindrops was set up in the Paris, France area.
Location:Citation Only, Full Text Not In Library
Record ID:46/179


Date:8/1/1998
Subject:(46) Microphysics - Warm Cloud
Author:Hu, Z., R.T. Bruintjes, E.A. Betterton
Title:Sensitivity of cloud droplet growth to collision and coalescence efficiencies in a parcel model.
Publication:J. Atmos. Sci., 55, 15, 2502-2515
Abstract:The purpose of this study is to assess the relative importance of collision and coalescence efficiencies as reported in the literature in different drop size regimes for the development of precipitation via the condensation-coalescence process.
Location:Citation Only, Full Text Not In Library
Record ID:46/180


Date:10/1/1965
Subject:(46) Microphysics - Warm Cloud
Author:Plank, V.G.
Title:The cumulus and meteorological events of the Florida Peninsula during a particular summertime period.
Publication:Env. Res. Papers, Office of Aerospace Research, U.S.A.F., AFCRL-65-761
Abstract:The cumulus cloud events of the Florida peninsula that were observed during a 19-day period of photoreconnaissance in August and September 195 are described.
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Record ID:46/181


Date:2/17/1967
Subject:(46) Microphysics - Warm Cloud
Author:Semonin, R.G., E.A. Mueller, G.E. Stout, D.W. Staggs
Title:Radar analysis of Project Warm Rain Hilo, Hawaii -- Summer 1965
Publication:Illinois State Water Survey, Univ. of Ill, Urbana. Final Scientific Report
Abstract:Two X-band radar sets, an M-33 and a GPG-1, were operated routinely on the island of Hawaii during the period July 11 through August 28, 1965.
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Record ID:46/182


Date:7/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:Matthews, D.A.
Title:Effects of raindrop spectra on a cumulus model
Publication:CSU, Dept. of Atmos. Sci. Paper No. 174
Abstract:A review of observed and theoretical raindrop distributions is presented.
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Record ID:46/183


Date:4/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Kessler, E.
Title:On the continuity of water substance.
Publication:Inst. for Env. Research, National Severe Storms Lab., Norman OK, Technical Memo. IERTM-NSSL 33
Abstract:A kinematic model of the atmosphere illustrates relationships among distributions of air motion, precipitation, cloud and vapor, and microphysical processes.
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Record ID:46/184


Date:9/1/1965
Subject:(46) Microphysics - Warm Cloud
Author:Olson, C.L.
Title:Elaboration of Hocking's hydrodynamic theory
Publication:U.S.A.F. Project RAND, Memo. RM-4715-PR
Abstract:This RAND Memorandum is part of a continuing study of the physics of cloud particle collisions.
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Record ID:46/185


Date:5/1/1976
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V.
Title:Terminal velocity and shape of cloud and precipitation drops aloft.
Publication:J. Atmos. Sci., 33, 5, 851-864
Abstract:The terminal velocity of cloud and precipitation size drops has been analyzed for 3 physically distinct flow regimes: 1)slip flow about a water drop treated as a rigid sphere at neglible Reynolds numbers...
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Record ID:46/186


Date:5/24/1985
Subject:(46) Microphysics - Warm Cloud
Author:Berthel, R.O., V.G. Plank
Title:Time durations of rain rates exceeding specified thresholds
Publication:Air Force Geophys. Lab., Env. Research Paper No. 918, AFGL-TR-85-0122
Abstract:Rainfall may hamper military operations in ways as diverse as the visual detection of enemy movements to the attenuation of sophisticated, electro-optical, weapon guidance systems.
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Record ID:46/187


Date:8/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Bradley, W.E., G.E. Martin
Title:An airborne precipitation collector
Publication:J. Appl. Met., 6, 717-723
Abstract:A high volume airborne precipitatoin collector is described.
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Record ID:46/188


Date:1/1/1987
Subject:(46) Microphysics - Warm Cloud
Author:Caylor, I.J., A.J. Illingworth
Title:Radar observations and modelling of warm rain ititiation
Publication:Q.J.R. Met. Soc., 113, 1171-1191
Abstract:Differential radar reflectivity data are presented which indicate that some initial echoes of convective clouds arise from a small number of very large raindrops; these raindrops may be supercooled.
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Record ID:46/189


Date:3/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Changnon, S.A., J.C. Neill
Title:Areal variations in corn-weather relations in Illinois
Publication:Transactions -- Illinois State Academy of Science, 60, 3, 221-230
Abstract:Various statistical measures of the relations between weather factors and corn yields were derived for all counties in Illinois.
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Record ID:46/190


Date:4/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Changnon Jr., S.A.
Title:Method of evaluating substation records of hail and thunder.
Publication:Mon. Wea. Rev., 95, 4, 209-212
Abstract:Cooperative substation records of hail and thunder incidences have been used as a source of data to develop more accurate and detailed average patterns of these phenomena.
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Record ID:46/191


Date:7/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Essenwanger, O.M.
Title:Estimation of absolute humidity during morning fog in Central Europe
Publication:U.S. Army Missile Research and Development Command, Technical Report TR-77-10
Abstract:A tentative estimate of the distribution of the absolute humidity during fog in Central Europe is given via the frequency distributionof the temperature, assuming 100% relative humidity.
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Record ID:46/192


Date:10/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Grover, S.N., H.R. Purppacher, A.E. Hamielec
Title:A numerical determination of the efficiency with which sperical aerosol particles collide with spherical water drops due to inertial impaction and phoretic and electrical forces.
Publication:J. Atmos. Sci., 34, 1655-1663
Abstract:A theoretical model to compute the efficiency with which aerosol particles of radius 0.5. < r < 10um collide with water drops of radius a-42, 72, 106...
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Record ID:46/193


Date:4/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Huff, F.A.
Title:Rainfall gradients in warm season rainfall.
Publication:J. Appl. Met., 6, 435-437
Abstract:The variation of point rainfall with distance is an important factor in various hydrometeorological applications of precipitation data.
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Record ID:46/194


Date:2/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Huff, F.A.
Title:The adjustment of radar estimates of storm mean rainfall with rain gage data
Publication:J. Appl. Met., 6, 52-56
Abstract:Data from two dense rain gage networks in Illinois and Oklahoma were used to evaluate the feasibility of improving radar estimates of storm mean rainfall through the use of surface rain gage data to modify the radar-rainfall equation for specific storm conditions.
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Record ID:46/195


Date:10/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:Kiang, C.S., D. Stauffer, G.H. Walker, O.P. Puri, J.D. Wise Jr., E.M. Patterson
Title:A reexamination of homogeneous nucleation theory
Publication:J. Atmos. Sci., 26, 1222-1232
Abstract:The homogeneous nucleation theory of liquid droplets in supersaturated vapors is reviewed.
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Record ID:46/196


Date:1/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Lee, I.-Y., H.R. Pruppacher
Title:A comparative study on the growth of cloud drops by condensation using an air parcel model with and without entrainment
Publication:Pageoph, Vol. 115, 523-545
Abstract:During a study of the growth of cloud drops by condensation the evolution of cloud drop size spectra with height above cloud base was determined for maritime aerosols, and for continental aerosols containing aerosol particles of mixed composition.
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Record ID:46/197


Date:10/1/1976
Subject:(46) Microphysics - Warm Cloud
Author:List, R., J.R. Gillespie
Title:Evolution of raindrop spectra with collision-induced breakup
Publication:J. Atmos. Sci., 33, 2007-2013
Abstract:A numerical model was set up to study the evolution of raindrop spectra by collision-induced breakup as measured in the laboratory.
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Record ID:46/198


Date:7/1/1975
Subject:(46) Microphysics - Warm Cloud
Author:McTaggart-Cowan, J.D., R. List
Title:An acceleration system for water drops
Publication:J. Atmos. Sci., 32, 1395-1400
Abstract:Linear accelerator systems are described which allow the production of series of homogeneously sized water drops of different diameter and at terminal velocity, with small oscillations, negligible charges, and in air of low turbulence intensity.
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Record ID:46/199


Date:7/1/1975
Subject:(46) Microphysics - Warm Cloud
Author:McTaggert-Cowan, J.D., R. List
Title:Collision and breakup of water drops at terminal velocity
Publication:J. Atmos. Sci., 32, 1401-1411
Abstract:The collision and subsequent breakup of water drops moving esentially vertically and at terminal velocity has been studied for five drop pairs...
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Record ID:46/200


Date:5/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Stigliani Jr., D.J., R.Mittra, R.G. Semonin
Title:Resolving power of a zone plate
Publication:J. Optical Soc. of America, 57, 5, 610-613
Abstract:The resolution of two point sources by a zone plate is analyzed with respect to the number of zones.
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Record ID:46/201


Date:12/1/1973
Subject:(46) Microphysics - Warm Cloud
Author:Tabata, S.
Title:A simple but accurate formula for the saturation vapor pressure over liquid water
Publication:J. Appl. Met., 1410-1411
Abstract:No abstract.
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Record ID:46/202


Date:3/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Wang, P.K., H.R. Pruppacher
Title:Acceleration to terminal velocity of cloud and raindrops
Publication:J. Appl. Met., 16, 275-280
Abstract:A theoretical method is given which allows computing the acceleration to terminal velocity of cloud and raindrops at various levels in the atmosphere.
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Record ID:46/203


Date:10/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Wang, P.K., H.R. Pruppacher
Title:An experimental determination of the efficiency with which aerosol particles are collected by water drops in subsaturated air.
Publication:J. Atmos. Sci., 34, 1664-1669
Abstract:Experiments have been carried out to determine the efficiency with which aerosol particles of 0.25 um radius are collected due to Brownian diffusion, and due to hydrodynamic, phoretic and electrical effects by water drops of 150 to 2500 um equivalent radius falling in substantial air.
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Record ID:46/204


Date:5/19/1978
Subject:(46) Microphysics - Warm Cloud
Author:Wen, F.C., T. McLaughlin, J.L. Katz
Title:Photoinduced nucleation of water vapor
Publication:Science, 200, 4343, 769-771
Abstract:Strong photoinduced nucleation of pure water vapor was found to occur in a wavelength range where no ultraviolet absorption of water vapor has been reported.
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Record ID:46/205


Date:12/1/1950
Subject:(46) Microphysics - Warm Cloud
Author:Blanchard, D.C.
Title:The behavior of water drops at terminal velocity in air
Publication:Transactions, Amer. Geophys. Union, 31, 6, 836-842
Abstract:An insight into the behavior of large raindrops has been obtained by studying drops of water freely suspended in a vertical air stream.
Location:1
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Record ID:46/206


Date:4/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Chen, C.S.
Title:Evaluation of the water vapor diffusion coefficient in the drop growth equation
Publication:J. Atmos. Sci., 31, 845-847
Abstract:It is common to use a flat surface diffusion coefficient to evaluate the growth rate of a drop due to condensation.
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Record ID:46/207


Date:10/20/1977
Subject:(46) Microphysics - Warm Cloud
Author:Gertzman, H.S., D. Atlas
Title:Sampling errors in the measurement of rain and hail parameters.
Publication:J. Geo. Res., 82, 31, 4955-4966
Abstract:All methods of measuring the integrated properties of cloud, rain, or hail populations such as the water content, precipitation rate, kinetic energy, or radar reflectivity are subject to statistical sampling errors due to the Poisson distribution fluctuations of the number of particles sampled...
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Record ID:46/208


Date:1/1/1943
Subject:(46) Microphysics - Warm Cloud
Author:Laws, J.O., D.A. Parsons
Title:The relation of raindrop-size to intensity
Publication:Trans. Am. Geophys. Union, Part II, 452-460
Abstract:Curiosity concerning the drop-size composition of natural rain has arisen from attempts to measure erodibility and infiltration capacity by sprinking small areas of land with artificial rain.
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Record ID:46/209


Date:10/21/1974
Subject:(46) Microphysics - Warm Cloud
Author:Lee, I.Y., M. Neiburger
Title:A cumulus cloud model including drop growth on entrained nuclei
Publication:Preprint Vol., Conf. on Cloud Phys., Tucson, AZ, 21-24 Oct. 1974.
Abstract:The purpose of this paper is to investigate the influence of compensating downward motions on the micro- and macro-structure of cumulus clouds during their development.
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Record ID:46/210


Date:1/1/1975
Subject:(46) Microphysics - Warm Cloud
Author:Nelson, S.P., R.R. Braham Jr.
Title:Detailed observational study of a weak echo region.
Publication:Pageoph, Vol. 113, 735-746
Abstract:High resolution 3-cm weather radar was used to observe the 3D structure of a weak echo region of a severe convective storm in northern Minn.
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Record ID:46/211


Date:3/20/1978
Subject:(46) Microphysics - Warm Cloud
Author:Ulbrich, C.W., D. Atlas
Title:The rain parameter diagram: Methods and applications
Publication:J. Geo. Res., 83, C3, 1319-1325
Abstract:A rain parameter diagram is presented which displays the relationships between all rainfall parameters defined in terms of an exponential drop size distribution.
Location:1
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Record ID:46/212


Date:2/1/1966
Subject:(46) Microphysics - Warm Cloud
Author:Cornell Aeronautical Lab, Inc.
Title:An investigation of rain on the island of Hawaii
Publication:Final Report, Project Hawaii, NSF.
Abstract:It is traditional to think of rainfall as being produced by either the sublimation-coalescence process or the condensation-coalescence process.
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Record ID:46/213


Date:5/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Schnell, R.C.
Title:Biogenic sources of atmospheric ice nuclei
Publication:Dept. of Atmos. Resources, College of Engineering, Univ. of Wyoming, Laramie, Report No. AR111
Abstract:Copious numbers of freezing nuclei (some nuclei acitve at -5C) have been found in decayed plant leaf litters collected across the three continents of the northern hemisphere.
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Record ID:46/214


Date:6/30/1968
Subject:(46) Microphysics - Warm Cloud
Author:Smith, T.B., P.B. MacCready Jr., S. Hozaki
Title:Analysis of warm cloud modification potential.
Publication:Bureau of Reclamation, Project Skywater Final Report, Part B.
Abstract:The basis for the modification of warm cloud precipitation is reviewed for both increasing and decreasing precipitation.
Location:1
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Record ID:46/215


Date:1/1/1970
Subject:(46) Microphysics - Warm Cloud
Author:Tag, P.M., D.B. Johnson, EE. Hindman II
Title:Engineering fog-modificaiton experiments by computer modeling
Publication:Second National Conf. on Weather Modification, Santa Barbara, CA, 6-9 April 1970
Abstract:Fog continues to hamper a wide variety of operations by both military and civil organizations.
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Record ID:46/216


Date:6/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:Huntsinger, R.C.
Title:Computer analysis of the growth of a cloud drop by coalescence
Publication:Final Report on Themis Sub-project on Mathematical Modeling of Cloud Growth, ONR.
Abstract:Over a four year period, from Sept 1967- July 1971, the rate of growth of a 30u radius drop to 50 or 100u radius by a process known as accretion has been studied as part of the numerical modeling effort of Project Themis.
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Record ID:46/217


Date:11/01/1971
Subject:(46) Microphysics - Warm Cloud
Author:Fields, R.I., H..W. Robinson
Title:Modeling trade cumuli and salt seeding
Publication:Report No. 18, NSF Grant GA-13818, Dept. of Meteorology, Penn. State Univ.
Abstract:The two studies comprising this report served as thesis for the M.S. degree for the respective authors.
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Record ID:46/218


Date:10/1/1972
Subject:(46) Microphysics - Warm Cloud
Author:Gokhale, N.R.
Title:Investigation of freely suspended hydrometeors in a large vertical wind tunnel.
Publication:Dept. of Atmos. Sci., State Univ. of NY at Albany, NSF Grant GA 11635, Final Report
Abstract:The reasons for using vertical wind tunnel in the study of our atmosphere are well-documented in scientific literature.
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Record ID:46/219


Date:6/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:Kessler, E., W.C. Bumbarner
Title:Model of precipitation and vertical air currents
Publication:NOAA Technical Memorandum, ERL NSSL-54
Abstract:Time-dependent moist columnar convection is numerically modeled as an extension of Priestly's 1953 study of buoyant dry elements in a turbulent environment.
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Record ID:46/220


Date:10/10/1973
Subject:(46) Microphysics - Warm Cloud
Author:Cloud Physics Laboratory, Univ. of Chicago.
Title:Collection of Reprints XIV
Publication:Cloud Physics Lab Tech. Note No. 46
Abstract:Various
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Record ID:46/221


Date:12/1/1989
Subject:(46) Microphysics - Warm Cloud
Author:Bigg, E.K., A.D. Kaye, W.J. Megaw
Title:Field and laboratory comparisons of two cloud condensation nuclei counters
Publication:J. Atmos. and Ocean. Tech., 6, 1066-1078
Abstract:An extensive series of experiments was carried out to compare the performance of two cloud nucleus counters, a Static Diffusion Chamber and a Thermal Diffusion Tube, operating under quite different principles...
Location:2
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Record ID:46/222


Date:1/1/1961
Subject:(46) Microphysics - Warm Cloud
Author:Fujiwara, M.
Title:Raindrop size distribution with rainfall types and weather conditions.
Publication:Research Report No. 8, Illinois State Water Survey, Urbana Ill.
Abstract:This paper investigates the relationship between the variability of the raindrop size distributions and weather condtitions on the basis of raindrop, radar, and synoptic weather data.
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Record ID:46/223


Date:110/1/1970
Subject:(46) Microphysics - Warm Cloud
Author:Lavoie, R.L., J.A. Pena, R. de Pena, R.L. Ruth, R.P. Greiner, D.A. Corkum, J.L. Lee, C.L. Hosler
Title:Studies of the microphysics of clouds.
Publication:Report No. 16, Final Report, NSF, Dept. of Meteorology, Penn. State Univ.
Abstract:Details are presented of the design, constuction, and testing of 4 instrumetal systems intended for aircraft use.
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Record ID:46/224


Date:10/1/1980
Subject:(46) Microphysics - Warm Cloud
Author:Lemone, M.A.
Title:On the difficulty of measuring temperature and humidity in cloud: Comments on 'Shallow convection on day 261 of GATE: Mesoscale arcs'
Publication:Mon. Wea. Rev., 108, 1702-1705
Abstract:Warner et al. quote several sets of temperature and humidity measurements made in cloud.
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Record ID:46/225


Date:7/5/1977
Subject:(46) Microphysics - Warm Cloud
Author:Plank, V.G.
Title:Hydrometeor data and analytical-theoretical investigations pertaining to the SAMS rain erosion program of the 1972-3 season at Wallops Island, Virginia.
Publication:AFGL/SAMS Report No. 5, Env. Research Papers, No. 603,
Abstract:Radar, aircraft, and surface measurement information is presented concerning the liquid-water-content values and size distribution properties of the hydrometeors that existed along the trajectory paths of the four SAMS missles that were fired into Wallops storms during the 1972-3 season.
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Record ID:46/226


Date:7/1/1979
Subject:(46) Microphysics - Warm Cloud
Author:Pruppacher, H.R., R. Rasmussen
Title:A wind tunnel investigation of the rate of evaporation of large water drops falling at terminal velocity in air.
Publication:J. Atmos. Sci., 36, 1255-1260
Abstract:An experimental study of the effect of ventilation on the rate of evaporation of millimeter sized water drops falling at terminal velocity in air has been carried out in a wind tunnel where drops were suspended freely in the tunnel air stream.
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Record ID:46/227


Date:4/1/1968
Subject:(46) Microphysics - Warm Cloud
Author:Steinberger, E.H., H.R. Pruppacher, M. Neiburger
Title:On the hydrodynamics of pairs of spheres falling along their line of centres in a viscous medium
Publication:J. Fluid Mech., 34, 4, 809-819
Abstract:The velocities, accelerations and drag forces experienced by two equal spheres falling along their line of centres in a viscous fluid were determined for three groups of Reynolds numbers R in the range where it is commonly assumed that Stokes's approximation applies.
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Record ID:46/228


Date:7/1/1973
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., R.L. Reinhardt
Title:Modeling of condensation and collection within clouds
Publication:NSF Final Report, Grant GA-21350
Abstract:In the Research Proposal to NSF we listed the following items as our primary goals: a) develop improved numerical procuedures for the calculation of the collection process and formulate a tractable, readable computer program for the same...
Location:3
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Record ID:46/229


Date:8/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Davis, M.H.
Title:The forces on two spheres in Stokes flow.
Publication:Memorandum, The Rand Corp., RM-5357-PR
Abstract:This memo. discusses the hydrodynamic forces that act on two proximate spheres moving slowly through a viscous fluid.
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Record ID:46/230


Date:11/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Davis, M.H.
Title:Theoretical collision efficiencies for cloud droplets in the radius range 10-30 microns
Publication:Memorandum RM-5419-NSF, The Rand Corporation.
Abstract:This memo. reports the theoretical collision efficiencies for cloud droplets with radii in the range 10-30 microns, calculated under the assumption that the droplets are sedimenting in still air and that steady Stokes flow conditions apply.
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Record ID:46/231


Date:3/1/1969
Subject:(46) Microphysics - Warm Cloud
Author:Phillips, B.B.
Title:Water load in convective storms and its influence on storm kinetics.
Publication:ESSA Research Laboratories, Atmospheric Physics and Chemistry Lab., Boulder, CO, Technical Memo. ERLTM-APCL 6
Abstract:The growth rate and accumulation of precipitation water mass in convective cloud updrafts is examined.
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Record ID:46/232


Date:2/1/1965
Subject:(46) Microphysics - Warm Cloud
Author:Scott, W.T.
Title:Analytic studies of cloud droplet coalescence I
Publication:Desert Research Institute, Univ. of Nevada, Reno, Technical Report No. 9.
Abstract:The kinetic equation for the pure growth-by-coalescence process is solved exactly for three types of overall collection probability, proportional to the sum of droplet volumes, proportional to the product of droplet volumes, and constant.
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Record ID:46/233


Date:1/1/1973
Subject:(46) Microphysics - Warm Cloud
Author:Brazier-Smith, P.R., S.G. Jennings, J. Latham
Title:Raindrop interactions and rainfall rates within clouds
Publication:Q.J. Royal Met. Soc., 99, 260-272
Abstract:Experiments showed that when a pair of water drops of raindrop dimensions collide and separate in air at their relative terminal velocities satellite drops are generally produced.
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Record ID:46/234


Date:1/1/1973
Subject:(46) Microphysics - Warm Cloud
Author:Brazier-Smith, P.R., S.G. Jennings, J. Latham
Title:The influence of evaporation and drop-interactions on a rainshaft
Publication:Q.J. Royal Met. Soc., 99, 704-722
Abstract:Calculations have been made of the variations with fall-depth z of the liquid water content, L, rainfall rate, p, radar reflectivity, Z, drop concentration, Nr, and raindrop size distribution n(r), within a steady state rainshaft as a result of the evaporation and interaction of the drops.
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Record ID:46/235


Date:8/15/1967
Subject:(46) Microphysics - Warm Cloud
Author:Cotton, W.R., N.R. Gokhale
Title:Collision, coalescence, and breakup of large water drops in a vertical wind tunnel
Publication:J. Geo. Res., 72, 4041-4049
Abstract:A vertical wind tunnel in which drop interaction could be observed both visually and photographically was designed and constructed.
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Record ID:46/236


Date:10/1/1963
Subject:(46) Microphysics - Warm Cloud
Author:Golovin, A.M.
Title:On the kinetic equation for coagulating cloud droplets with allowance for condensation. III
Publication:Izv. Geophys. Ser., 10, 1571-1580
Abstract:The evolution of the coagulating cloud droplet spectrum in a rising air stream whose velocity greatly exceeds that of free fall for droplets of average size is considered...
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Record ID:46/237


Date:1/1/1963
Subject:(46) Microphysics - Warm Cloud
Author:Golovin, A.M.
Title:The solution of the coagulation equation for cloud droplets in a rising air current.
Publication:Izv. Geophys. Ser. 1963, 783-791
Abstract:A solution is proposed for the kinetic coagulation equation for cloud droplets in a rising current of air, in which the probability of collision is assumed to be proportional to the sum of the volumes of the colliding droplets.
Location:3
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Record ID:46/238


Date:6/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:Hallett, J., H.D. Orville, D. Sartor, H.K. Weickmann
Title:Cloud physics.
Publication:EOS, 52, 6, 341-350
Abstract:Problems of the origin and physical characteristics of ice crystal and cloud drop nuclei continue to receive considerable attention.
Location:3
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Record ID:46/239


Date:1/1/1973
Subject:(46) Microphysics - Warm Cloud
Author:Pitter, R.L., H.R. Pruppacher, A.E. Hamielec
Title:A numerical study of viscous flow past a thin oblate spheroid at low and intermediate Reynolds numbers.
Publication:J. Atmos. Sci., 30, 125-134
Abstract:The flow past a thin oblate spheroid falling at terminal velocity in an infinite, viscous fluid was investigated using a numerical solution of the steady-state Navier-Stokes equations of motion.
Location:3
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Record ID:46/240


Date:1/1/1978
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C.
Title:Parameterization of raindrop size distribution
Publication:J. Atmos. Sci., 35, 108-117
Abstract:The processes of condensation, coalescence and drop breakup tend to produce exponential raindrop size spectra.
Location:3
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Record ID:46/241


Date:10/1/1978
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T., S.-M. Lee
Title:The nuclei mass range most efficient for the initiation of warm cloud showers.
Publication:J. Atmos. Sci., 35, 1934-1946
Abstract:The nuclei mass range and optimum number concentration most efficient for warm rain development around Hawaii were studied in a modified cylindrical shallow cloud model.
Location:3
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Record ID:46/242


Date:1/1/1973
Subject:(46) Microphysics - Warm Cloud
Author:Tennekes, H., J.D. Woods
Title:Coalescence in a weakly turbulent cloud
Publication:Q.J. Royal Met. Soc., 99, 758-763
Abstract:In a recent paper on the effect of turbulence on droplet collisions in clouds, Woods, Drake and Goldsmith (1972) proposed that the principal factor was the strong spectral peak of shear near the Kolmogoroff microscale.
Location:3
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Record ID:46/243


Date:2/1/1959
Subject:(46) Microphysics - Warm Cloud
Author:Twomey, S.
Title:The influence of droplet concentration on rain formation and stability in clouds.
Publication:Bull. De L'Observatoire Du Puy De Dome, 2, 33-41
Abstract:Increase of cloud droplet concentration must necessarily lead, other things being equal, to a reduction in droplet size and hence altered terminal velocities and collection efficiencies.
Location:3
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Record ID:46/244


Date:3/1/1964
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., W.A. Mordy
Title:Cloud particle growth by the combined effects of condensation and collection.
Publication:Desert Research Inst., Tech. Report No. 8, March 1964, Revised Sept. 1964.
Abstract:The combined effects of condensation and collection on a system of a large number of particles is formulated in terms of a particle distribution function and a variable environmental background.
Location:3
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Record ID:46/245


Date:2/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Hobbs, P.V., D.A. Bowdle, L.F. Radke
Title:Contributions from the Cloud Physics Group,
Publication:Research Report XII, Aerosol over the high plains of the United States.
Abstract:As part of the assessment of the potential for increasing precipitation by artificially seeding summer cumulus clouds in the High Plains (the HIPLEX Project), the Univ. of Washington's Cloud Physics group is carrying out a detailed airborne study of the nature of the aerosol in this region.
Location:3
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Record ID:46/246


Date:5/1/1982
Subject:(46) Microphysics - Warm Cloud
(38) Instrumentation
Author:Coulman, C.D., M.A. Parker
Title:On the calibration and performance of an instrument for measuring total water mixing ratio in cloud
Publication:J. Appl. Meteor., 21, 695-702
Abstract:An instrument which measures the total water mixing ratio in cloud has been calibrated to an accuracy of about plus/minus 0.2 g kg^{-1}.
Location:4
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Record ID:46/247


Date:02/01/1984
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Mossop, S.C.
Title:Comments on 'Production of ice particles in clouds due to aircraft penetrations
Publication:J. Clim. Appl. Met., 23, 346
Abstract:Rangno and Hobbs (1983) have produced convincing evidence that a piston-engined aircraft can produce high concentrations of ice crystals in supercooled clouds.
Location:4
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Record ID:46/248


Date:07/01/1981
Subject:(46) Microphysics - Warm Cloud
(4) Aggregation
Author:Sax, R.I., J.G. Hudson
Title:Continentality of the south Florida summertime CCN aerosol.
Publication:J. Atmos. Sci., 38, 7, 1467-1479
Abstract:Measurements of cloud condensation nuclei (CCN) were obtained in the south Florida region as part of NOAA's Florida Area Cumulus Experiment (FACE).
Location:4
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Record ID:46/249


Date:1/1/1965
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.
Title:Cloud droplet growth by collection: A theoretical formulation and numerical calculations.
Publication:Dissertation; University of Nevada, Reno, April 1965
Abstract:The problem of change due to collection, condensation, evaporation, and convection in a distribution function of cloud particles is given a general formulation.
Location:4
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Record ID:46/250


Date:2/1/1983
Subject:(46) Microphysics - Warm Cloud
Author:Berthel, R.O., V.G. Plank
Title:A model for the estimation of rain distributions
Publication:Environmental Research Papers, No. 822. Air Force Geophysics Lab., Meteorology Division.
Abstract:The adverse attenuation effects caused by rain or snow on electro-optical weapons and communication systems are important considerations in any military operation.
Location:4
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Record ID:46/251


Date:8/1/1983
Subject:(46) Microphysics - Warm Cloud
Author:Schulz, T.M.
Title:A numerical study of the development of bimodal mass distribution
Publication:Laboratory for Environmental Probing, Tech. Report No. 45, Dept. of Geophysical Sciences, Univ. of Chicago
Abstract:This research is concerned with the growth of cloud drops into raindrops.
Location:4
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Record ID:46/252


Date:3/1/1979
Subject:(46) Microphysics - Warm Cloud
Author:Johnson, D.B.
Title:The role of coalescence nuclei in warm rain initiation
Publication:Univ. of Chicago, Dept. of the Geophys. Sci., Tech. Note No. 55
Abstract:This thesis examines the role of giant and ultragiant aerosol particles in the initiation of rain in non-freezing clouds.
Location:4
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Record ID:46/253


Date:1/1/1982
Subject:(46) Microphysics - Warm Cloud
Author:Baker, M.B., J. Latham
Title:A diffusive model of the turbulent mixing of dry and cloudy air.
Publication:Q.J. Royal Met. Soc., 108, 871-898
Abstract:A model is presented of the turbulent mixing between a sphere of droplet-free air (saturated or undersaturated) and a spherical volume of cloud within which it is embedded.
Location:4
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Record ID:46/254


Date:4/1/1978
Subject:(46) Microphysics - Warm Cloud
Author:Barkstrom, B.R.
Title:Some effects of 8-12 um radiant energy transfer on the mass and heat budgets of cloud droplets.
Publication:J. Atmos. Sci., 35, 665-673
Abstract:In standard treatments of the mass and energy budget of cloud droplets, radiant energy transfer is neglected on the grounds that the temperature difference between the droplet and its surroundings is small.
Location:4
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Record ID:46/255


Date:8/20/1984
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., H.T. Ochs III
Title:Collection and coalescence efficiencies for accretion
Publication:J. Geo. Res., 89, D5, 7165-7169
Abstract:The coalescence efficiency for accretion was assumed to be governed by a collisional Weber number.
Location:5
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Record ID:46/256


Date:5/15/1984
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V.
Title:Raindrop oscillations: Evaluation of a potential flow model with gravity.
Publication:J. Atmos. Sci., 41, 1765-1774
Abstract:Potential flow oscillations about an equilibrium raindrop distortion were modeled for ellipsoidal variations driven by changes in surface and gravitational potential energy with linear dissipation of kinetic energy.
Location:5
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Record ID:46/257


Date:1/1/1984
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., D.B. Johnson
Title:Raindrop axial and backscatter ratios using a collisional probablilty model
Publication:Geo. Res. Letters, 11, 65-68
Abstract:The steady-state distribution of oscillation energies for raindrops was computed for a balance between input energies from collisions and dissipation by viscosity.
Location:5
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Record ID:46/258


Date:1/1/1984
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V.
Title:Oscillation models for predicting raindrop axis and backskatter ratios
Publication:Radio Sci., 19, 1, 67-74
Abstract:Raindrop oscillations have been modeled using a potential flow, ellipsoidal variation about an equilibrium distortion along with a potential energy function that includes surface and gravitational energy.
Location:5
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Record ID:46/259


Date:1/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Blyth, A.M., T.W. Choularton, G. Fullerton, J. Latham, C.S. Mill, M.H. Smith, I.M. Armstrong
Title:The influence of entrainment on the evolution of cloud droplet spectra: II. Field experiments at Great Dun Fell
Publication:Q.J. Royal Met. Soc., 106, 821-840
Abstract:Measurements have been made of the liquid water content and droplet size distributions within clouds enveloping at the summit of Great Dun Fell, Cumbria.
Location:4
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Record ID:46/260


Date:7/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:Clark, T.L., R. List
Title:Dynamics of a falling particle zone
Publication:J. Atmos. Sci., 28, 718-727
Abstract:A numerical experiment on falling particles arranged in zones, with slab symmetry, constant air density, and initially still air is performed whereby single-sized particles are treated by a Lagrangian method and the air motion by an Eulerian method.
Location:4
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Record ID:46/261


Date:9/1/1968
Subject:(46) Microphysics - Warm Cloud
Author:Cotton, W.R.
Title:Application of the Monte Carlo method to cloud physics.
Publication:Class notes, Meteorology 502, Fall 1968
Abstract:Monte Carlo methods consist of that branch of experimental mathematics which is concerned with experiments on random numbers.
Location:4
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Record ID:46/262


Date:10/1/1979
Subject:(46) Microphysics - Warm Cloud
Author:Cotton, W.R.
Title:Cloud Physics: A review for 1975-1978 IUGG Quadrennial Report
Publication:Rev. of Geophys. and Space Phys., 17, 1840-1851
Abstract:Major advances in cloud physics for the period 1975-1978 are reviewed.
Location:4
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Record ID:46/263


Date:5/6/1982
Subject:(46) Microphysics - Warm Cloud
Author:Dyer, R.M., I.D. Cohen
Title:Changes in the nature of fluctuations of temperature and liquid water content during the lifetime of a large-scale storm
Publication:Air Force Geophysics Lab., Met. Division, Environmental Research Papers, No. 777
Abstract:The results of a spectral analysis of the horizontal fluctuations in temperature and liquid water content measured at four altitudes daily, during four days in the life cycle of a storm moving eastwards across the U.S. are discussed.
Location:4
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Record ID:46/264


Date:1/1/1981
Subject:(46) Microphysics - Warm Cloud
Author:Gillespie, D.T.
Title:A stochastic analysis of the homogeneous nucleation of vapor condensation
Publication:J. Chem. Phys., 74, 1, 661-678
Abstract:It is argued that condensation growth and evaporative decay of a molecular cluster are intrinsically stochastic processes, properly described by condensation and evaporation 'probability' rates rather than 'number' rates.
Location:4
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Record ID:46/265


Date:6/1/1983
Subject:(46) Microphysics - Warm Cloud
Author:Hallett, J.
Title:Progress in cloud physics 1979-1982
Publication:Rev. of Geophys. and Space Phys., 21, 5, 965-984
Abstract:Cloud physics is concerned with the initiation, growth and loss of particles in the earth's atmosphere.
Location:4
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Record ID:46/266


Date:2/1/1981
Subject:(46) Microphysics - Warm Cloud
Author:Hanel, G., M. Lehmann
Title:Equilibrium size of aerosol particles and relative humidity: New experimental data from various aerosol types and their treatment for cloud physics application.
Publication:Cont. to Atmos. Phys., 54, 57-71
Abstract:Physico-chemical properties of atmospheric aerosol particles necessary for the computation of their equilibrium size as function of relative humidity were measured on samples of aerosol particles.
Location:4
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Record ID:46/267


Date:1/1/1979
Subject:(46) Microphysics - Warm Cloud
Author:Hegg, D.A., P.V. Hobbs
Title:The homogeneous oxidation of sulfur dioxide in cloud droplets.
Publication:Atmos. Env., 13, 981-987
Abstract:In light of recent criticism as to the importance of the uncatalyzed oxidation of aqueous SO2 by dissolved oxygen, a reassessment of pertinent cloud water measurements has been undertaken.
Location:4
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Record ID:46/268


Date:8/1/1984
Subject:(46) Microphysics - Warm Cloud
Author:Hobbs, P.V., A.L. Rangno
Title:Ice particles in marine and continental clouds.
Publication:Proceedings, 9th Int. Cloud Physics Conf., Tallinn, Estonia, USSR, 21-28 Aug., 1984, Vol. I, 71-72
Abstract:Although there is observational evidence that ice particle concentrations in some clouds exceed measurements of ice nucleus concentrations by several orders of magnitude, the factors that determine such ice enhancement have not been firmly established.
Location:4
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Record ID:46/269


Date:2/1/1983
Subject:(46) Microphysics - Warm Cloud
Author:Hudson, J.G.
Title:Effects of CCN concentrations on stratus clouds
Publication:J. Atmos. Sci., 40, 480-486
Abstract:Comparisons between cloud-case CCN concentrations and cloud droplet concentrations in stratus clouds over San Diego and 100 km out to sea showed a positive correlation.
Location:4
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Record ID:46/270


Date:4/1/1984
Subject:(46) Microphysics - Warm Cloud
Author:Johnson, D.B., K.V. Beard
Title:Oscillation energies of colliding raindrops.
Publication:J. Atmos. Sci., 41, 1235-1241
Abstract:When raindrops collide, some of the kinetic energy involved in the collision will be available to initiate or sustain oscillations in the surviving drops./
Location:4
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Record ID:46/271


Date:1/1/1981
Subject:(46) Microphysics - Warm Cloud
Author:Johnson, D.B.
Title:Analytical solutions for cloud-drop concentration
Publication:J. Atmos. Sci., 38, 215-218
Abstract:Analytical solutions for the maximum super-saturation and number of drops activated in a growing cloud are important tools which have received widespread use in studies of cloud microphysics.
Location:4
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Record ID:46/272


Date:1/1/1982
Subject:(46) Microphysics - Warm Cloud
Author:Jonas, P.R., B.J. Mason
Title:Entrainment and the droplet spectrum in cumulus clouds.
Publication:Q. J. Royal Met. Soc., 108, 857-869
Abstract:The model of the development of the droplet spectrum in cumulus clouds described by Mason and Jonas (1974) has been used to calculate the spectrum in penetrating downdraughts and the changes which occur when a region of dry air resulting from such a downdraught is subsequently forced to rise.
Location:4
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Record ID:46/273


Date:1/1/1984
Subject:(46) Microphysics - Warm Cloud
Author:Kozikowska, A., K. Haman, J. Supronowicz
Title:Preliminary results of an investigation of the spatial distribution of fog droplets by a holographic method.
Publication:Q.J. Royal Met. Soc., 110, 65-73
Abstract:Holograms of natural fogs have been made.
Location:4
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Record ID:46/274


Date:7/1/1982
Subject:(46) Microphysics - Warm Cloud
Author:Low, T.B., R. List
Title:Collision, coalescence and breakup of raindrops. Part II: Parameterization of fragment size distributions
Publication:J. Atmos. Sci., 39, 1607-1618
Abstract:The experimental drop collision/breakup results of Low (1977) and Low and List (1982) and McTaggart-Cowan and List (1975b), taken at laboratory pressure and terminal drop speeds, were parameterized for future use in cloud and precipitation modeling.
Location:4
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Record ID:46/275


Date:2/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Ochs III, H.T., R.R. Czys, K.V. Beard
Title:Laboratory measurements of coalescence efficiencies for small precipitation drops
Publication:J. Atmos. Sci., 43, 3, 225-232
Abstract:Coalescence efficiencies were determined for small precipitation drops falling at terminal velocity in air.
Location:4
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Record ID:46/276


Date:1/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Pruppacher, H.R.
Title:The role of cloud physics in atmospheric multiphase systems: Ten basic statements
Publication:NATO ASI Series, Vol. G6, 133-190
Abstract:The role of cloud physics in atmospheric multiphase systems is sumarized below in the form of ten basic statements:...
Location:4
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Record ID:46/277


Date:2/1/1983
Subject:(46) Microphysics - Warm Cloud
Author:Rangno, A.L., P.V. Hobbs
Title:Production of ice particles in clouds due to aircraft penetrations.
Publication:J. Clim. and Appl. Met., 22, 2, 214-232
Abstract:Evidence is presented that the passage of an aircraft through supercooled clouds can produce high concentrations of ice particles.
Location:4
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Record ID:46/278


Date:12/28/1981
Subject:(46) Microphysics - Warm Cloud
Author:Shiino, J., J. Aoyagi
Title:Three-dimensional distribution of precipitation water in a maritime cumulus cloud as revealed by X-band digitized radar.
Publication:J. Met. Soc. of Japan, 59, 6, 844-863
Abstract:3D distributions of precipitation water in a maritime cumulus cloud are investigated in detail through the life time by analyzing digital data of radar echo which were obtained at Miyako Island in the East China Sea during AMTEX '75.
Location:4
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Record ID:46/279


Date:4/20/1971
Subject:(46) Microphysics - Warm Cloud
Author:Whelpdale, D.M., R. List
Title:The coalescence process in raindrop growth
Publication:J. Geo. Res., 76, 12, 2836-2856
Abstract:Photographic and visual observations of a large number of collisions between two water drops, one of cloud droplet size and one of raindrop size reveal the conditions under which a collision may result in coalescence, bouncing, or partial coalescence.
Location:4
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Record ID:46/280


Date:5/1/1975
Subject:(46) Microphysics - Warm Cloud
Author:Young, K.C.
Title:The evolution of drop spectra due to condensation, coalescence and breakup.
Publication:J. Atmos. Sci., 32, 965-973
Abstract:A numerical model of warm rain processes incorporating activation of CCN, drop growth by condensation and stochastic coalescence and drop breakup is described.
Location:4
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Record ID:46/281


Date:12/15/1985
Subject:(46) Microphysics - Warm Cloud
(19) Cumulus
(21) Cumulus Dynamics
Author:Davies, R.
Title:Response of cloud supersaturation to radiative forcing
Publication:J. Atmos. Sci., 42, 2820-2825
Abstract:The diffusional growth or evaporation of cloud droplets due to net emission of absorption of radiation is studied. Time dependent solutions for droplet temperatures and supersaturation are obtained, taking into account the partitioning of the net radiation budget between the droplets and the ambient air. Radiative perturbations are shown to cause extremely high rates
Location:5
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Record ID:46/282


Date:12/01/1989
Subject:(46) Microphysics - Warm Cloud
(19) Cumulus
Author:Grabowski, W.
Title:Numerical experiments on the dynamics of the cloud-environmental interface: Small cumulus in a shear-free environment
Publication:J. Atmos. Sci., 46, 3513-3541
Abstract:We report herein high resolution two-dimensional numerical experiments on the dynamics of the mixing between the environment and a small cloud in the absence of shear. The current paper
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Record ID:46/283


Date:01/01/1982
Subject:(46) Microphysics - Warm Cloud
(59) Radar Meteorology
Author:Jorgensen, D.P., P.T. Willis
Title:A Z-R relationship for hurricanes
Publication:J. Appl. Met., 21, 356-366
Abstract:Drop-size measurements taken during hurricane research flight missions at altitudes at or below 3 km were used to derive a relaitonship between reflectivity factor and rainfall rate
Location:5
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Record ID:46/284


Date:11/1/1989
Subject:(46) Microphysics - Warm Cloud
(49) Mountain Meteorology
Author:Richard, E., N. Chaumerliac
Title:Effects of different rain parameterizations on the simulation of mesoscale orographic precipitation.
Publication:J. Appl. Met., 28, 1197-1212
Abstract:A detailed comparison is made between the results obtained from two microphysical parameterizations capable of simulating cloud and precipitation processes in a mesoscale model.
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Record ID:46/285


Date:08/15/1987
Subject:(46) Microphysics - Warm Cloud
(44) Micrometeorology
Author:Telford, J.W.
Title:Comments on ``Does mixing promote cloud droplet growth?'
Publication:J. Atmos. Sci., 44, 2352-2354
Abstract:The article by Paluch and Knight reviews some cumulus cloud-droplet measurements, and presents conclusions related to entrainment and vertical mixing in clouds.
Location:5
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Record ID:46/286


Date:1/1/1988
Subject:(46) Microphysics - Warm Cloud
Author:Cloud Physics Research Group
Title:1987-1988 Collection of Reprints
Publication:Ill. State Water Survey and Dept. of Atmos. Sci., Univ. of Ill. at Urbana-Champaign
Abstract:Various
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Record ID:46/287


Date:1/1/1987
Subject:(46) Microphysics - Warm Cloud
Author:Cloud and Aerosol Research Group
Title:Collection of Reprints XXX
Publication:Univ. of Washington, Dept. of Atmos. Sci., Seattle
Abstract:Various.
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Record ID:46/288


Date:5/1/1988
Subject:(46) Microphysics - Warm Cloud
Author:Lawson, R.P.
Title:The measurement of temperature from an aircraft in cloud.
Publication:Dept. of Atmos. Sci., Univ. of Wyoming, Laramie, Report No. AS 159
Abstract:The problem of wetting of thermometers used on research aircraft in cloud and precipitation has been previously recognized; however, quantitative evaluation of these imersion thermometers has been impeded by the lack of an objective standard for comparison.
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Record ID:46/289


Date:1/1/1982
Subject:(46) Microphysics - Warm Cloud
Author:Baker, M.B., A.M. Blyth, D.J. Carruthers, S.J. Caughey, T.W. Choularton, B.J. Conway, G. Fullarton, M.J. Gay, J. Latham, C.S. Mill, M.H. Smith, I.M. Stromberg
Title:Field studies of the effect of entrainment upon the structure of clouds at Great Dun Fell
Publication:Q.J. Royal. Met. Soc., 108, 899-916
Abstract:A description is given of experiments and calculations performed to investigate the effect of the entrainment of undersaturated air upon the microphysical structure of cap clouds at Great Dun Fell, Cumbria.
Location:5
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Record ID:46/290


Date:2/9/1987
Subject:(46) Microphysics - Warm Cloud
Author:Berthel, R.O., R.M. Banta, V.G. Plank
Title:The application of doubly-truncated hydrometeors distributions to numerical cloud models.
Publication:Air Force Geophys. Lab., Environmental Research Papers, No. 966.
Abstract:A number of meteorological applications involving clouds require being able to determine a reasonable hydrometeor particle size distribution when given the mean hydrometeor mass density over a region of space.
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Record ID:46/291


Date:10/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., D.B. Johnson, D. Baumgardner
Title:Aircraft observations of large raindrops in warm, shallow, convective clouds.
Publication:Geo. Res. Letters, 13, 10, 991-994
Abstract:Raindrop size distributions have been obtained using airborne optical array probes during the 1985 Joint Hawaiian Warm Rain Project near Hilo.
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Record ID:46/292


Date:3/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., S.N. Grover
Title:Numerical collision efficiencies for small raindrop colliding with micron size particles.
Publication:J. Atmos. Sci., 31, 2, 543-550
Abstract:Numerical calculations were carried out to determine collision efficiencies for small raindrops with micron size particles based on a numerical description of the axisymmetric steady-state flow about a rigid sphere for drop Reynolds numbers of 1, 10, 20, 100, 200, 400.
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Record ID:46/293


Date:11/1/1967
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X.
Title:Cloud droplet growth by collection.
Publication:J. Atmos. Sci., 24, 688-701
Abstract:Calculations of cloud droplet growth over the radius range from 4 to 200 u for collection kernals representing hydrodynamic capture, electric field capture, and geometric sweep-out show that the rate of droplet growth is proportional to the magnitude of the kernal...
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Record ID:46/294


Date:2/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Berry, E.X., M.R. Pranger
Title:Equations for calculating the terminal velocities of water drops.
Publication:J. Appl. Met., 13, 108-113
Abstract:The experimental data of Gunn and Kinzer, Beard and Pruppacher, and Davies are used to curve-fit a polynomial for Re in terms of CdRe2.
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Record ID:46/295


Date:1/1/1988
Subject:(46) Microphysics - Warm Cloud
Author:Bower, K.N., T.W. Choularton
Title:The effects of entrainment on the growth of droplets in continental cumulus clouds.
Publication:Q.J. Royal Met. Soc., 114, 1411-1434
Abstract:In this paper data are presented from aircraft passes through continental cumulus clouds obtained during the CCPE.
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Record ID:46/296


Date:5/1/1968
Subject:(46) Microphysics - Warm Cloud
Author:Brock, J.R.
Title:The diffusion force in the transition region of Knudsen number.
Publication:J. Colloid and Interface Sci., 27, 1, 95-100
Abstract:The free molecule theory of the diffusion force is reviewed briefly.
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Record ID:46/297


Date:10/1/1977
Subject:(46) Microphysics - Warm Cloud
Author:Cunning, J.B., R.I. Sax
Title:A Z-R relationship for the GATE B-scale array
Publication:Mon. Wea. Rev., 105, 1330-1336
Abstract:A better understanding of how the precipitation budget operates in tropical convective systems is a prime objective of the GATE research effort.
Location:5
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Record ID:46/298


Date:1/1/1987
Subject:(46) Microphysics - Warm Cloud
Author:Desalmand, F.
Title:Observations of CCN concentrations south of the Sahara during a dust haze.
Publication:Atmos. Res., 21, 13-28
Abstract:When the ITCZ reaches the low latitudes south of the Sahara, the northeastern winds carry bushfire products from the savannahs with variable dust content from the Chad and Niger basins.
Location:6
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Record ID:46/299


Date:11/15/1988
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G., S. Tzivion, Z. Levin
Title:Evolution of raindrop spectra. Part I: Solution to the stochstic collection/breakup equation using the method of moments.
Publication:J. Atmos. Sci., 45, 3387-3399
Abstract:We present a solution to the stochastic collection/breakup equation using our recently developed method of moments and the Low and List fragment distribution function.
Location:5
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Record ID:46/300


Date:9/1/1965
Subject:(46) Microphysics - Warm Cloud
Author:Fujiwara, M.
Title:Raindrop-size distribution from individual storms
Publication:J. Atmos. Sci., 22, 585-591
Abstract:Raindrop data from 34 storms, taken at the Univ. of Miami, FL, using a raindrop camera, have been analyzed.
Location:5
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Record ID:46/301


Date:9/3/1986
Subject:(46) Microphysics - Warm Cloud
Author:Gayet, J.F.
Title:Calibration of Johnson-Williams and PMS ASSP probes in a wind tunnel
Publication:J. Atmos. and Ocean. Tech., 3, 381-390
Abstract:Wet wind tunnel tests have provided calibrations and intercomparisons of the LAMP's cloud liquid water content probes.
Location:5
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Record ID:46/302


Date:1/1/1985
Subject:(46) Microphysics - Warm Cloud
Author:Herzegh, P.H., P.V. Hobbs
Title:Size spectra of ice particles in frontal clouds: correlations between spectrum shape and cloud concentrations.
Publication:Q.J. Royal Met. Soc., 111, 463-477
Abstract:Ice particle size spectra measured by optical particle size spectrometers during airborne sampling of clouds associated with several frontal precipitation systems in the Pacific Northwest are presented and discussed.
Location:5
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Record ID:46/303


Date:1/1/1985
Subject:(46) Microphysics - Warm Cloud
Author:Hill, T.A., T.W. Choularton
Title:An airborne study of the microphysical structure of cumulus clouds.
Publication:Q.J. Royal Met. Soc., 111, 517-544
Abstract:Data are presented from aircraft passes through cumulus clouds studied during a cooperative convective precipitation experiment on the plains of Montana in 1981.
Location:3
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Record ID:46/304


Date:1/15/1985
Subject:(46) Microphysics - Warm Cloud
(19) Cumulus
Author:Jensen, J.B., P.H. Austin, M.B. Baker, A.M. Blyth
Title:Turbulent mixing, spectral evolution and dynamics in a warm cumulus cloud
Publication:J. Atmos. Sci., 42, 173-192
Abstract:The analysis of Paluch suggests that some cumuli contain cloudy air from only two sources: cloud base and cloud top.
Location:5
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Record ID:46/305


Date:1/1/1989
Subject:(46) Microphysics - Warm Cloud
Author:Le Cam, M.N., H. Isaka
Title:Numerical simulation of raindrop spectra: Effects of vertical differential advection of raindrops.
Publication:Atmos. Res., 22, 307-321
Abstract:Many experimental studies have shown that raindrop spectra can generally be approximated by analytical functions except in some cases where they exhibit important departure from these functions.
Location:5
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Record ID:46/306


Date:1/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Leaitch, W.R., J.W. Strapp, G.A. Isaac
Title:Cloud droplet nucleation and cloud scavenging of aerosol sulphate in polluted atmospheres.
Publication:Tellus, 38B, 328-344
Abstract:Aircraft investigations of the microphysical and chemical properties of mildly to moderately convective clouds and stratiform clouds were conducted during the summer of 1982 and the early winter of 1984 over Algonquin Park, Canada.
Location:5
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Record ID:46/307


Date:1/1/1989
Subject:(46) Microphysics - Warm Cloud
Author:Lee, I.Y.
Title:Evaluation of cloud microphysics parmeterizations for mesoscale simulations.
Publication:Atmos. Res., 24, 209-220
Abstract:The theoretical bases for parameterization of cloud microphysics are examined, and their applicability for mesoscale modeling is evaluated.
Location:5
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Record ID:46/308


Date:1/1/1966
Subject:(46) Microphysics - Warm Cloud
Author:Levin, L.M., Y.S. Sedunov
Title:Stochastic condensation of drops and kinetics of cloud spectrum formation.
Publication:J. Rech. Atmos.,1996, 25-432
Abstract:The work treats of the formulation of the equations describing the droplets changes in a cloud.
Location:5
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Record ID:46/309


Date:3/1/1969
Subject:(46) Microphysics - Warm Cloud
Author:List, R., D.M. Whelpdale
Title:A preliminary investigation of factors affecting the coalescence of colliding water drops.
Publication:J. Atmos. Sci., 26, 305-308
Abstract:A method is described by which the coalescence process can be examined for different drop and droplet sizes.
Location:5
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Record ID:46/310


Date:12/20/1970
Subject:(46) Microphysics - Warm Cloud
Author:List, R., C.F. MacNeil, J.D. McTaggart-Cowan
Title:Laboratory investigations of temporary collisions of raindrops.
Publication:J. Geo. Res., 75, 7573-7580
Abstract:The collisoin of drops with diameters ranging from 2.0 to 4.5 mm was studied with the velocity differences of the drop pairs equal to those observed in nature.
Location:5
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Record ID:46/311


Date:8/1/1971
Subject:(46) Microphysics - Warm Cloud
Author:List, R., M.J. Hand
Title:Wakes of freely falling water drops.
Publication:Phys. of Fluids, 14, 1648-1655
Abstract:The study of 62 wakes of 2.9 mm water drops falling through a cloud of small droplets revealed approximately cylindrical disturbances 5 to 10 drop diameters wide and 1340 diameters long for drop speeds equivalent to 78% of their terminal speed of 8.0 msec -1.
Location:5
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Record ID:46/312


Date:11/1/1989
Subject:(46) Microphysics - Warm Cloud
Author:Lupkes, C., K.D. Beheng, G. Doms
Title:A parameterization scheme for simulating collision/coalescence of water drops.
Publication:Beitr. Atmos. Phys., 62, 289-306
Abstract:A new parameterization scheme describing the conversion of cloud water into rainwater through collision/coalescence is introduced.
Location:5
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Record ID:46/313


Date:1/1/1974
Subject:(46) Microphysics - Warm Cloud
Author:Merceret, F.J.
Title:A note on the vertical distribution of raindrop-size spectra in tropical storm Felice
Publication:Met. Magazine, 103, 358-359
Abstract:Foil-impactor measurements from tropical storm Felice give raindrop size distributions which are generally in agreement with the classical formula of Marshall and Palmer.
Location:6
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Record ID:46/314


Date:6/1/1990
Subject:(46) Microphysics - Warm Cloud
Author:Mizuno, H.
Title:Parameterization of the accretion process between different precipitation elements.
Publication:Met. Soc. of Japan, 68, 395-398
Abstract:The accretion process is one of the most important precipitation formation processes.
Location:5
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Record ID:46/315


Date:9/15/1986
Subject:(46) Microphysics - Warm Cloud
Author:Paluch, I.R.
Title:Mixing and the cloud droplet size spectrum: generalizations from the CCOPE data
Publication:J. Atmos. Sci., 43, 1894-1998
Abstract:Droplet size distributions have been examined in continental, convective clouds observed on 9 days during CCOPE.
Location:5
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Record ID:46/316


Date:3/1/1988
Subject:(46) Microphysics - Warm Cloud
Author:Reuter, G.W., R. de Villiers, Y. Yavin
Title:The collection kernal for two falling cloud drops subjected to random perturbations in a turbulent air flow: A stochastic model.
Publication:J. Atmos. Sci., 45, 765-773
Abstract:A stochastic model is presented to compute the collection kernal of cloud drops affected by turbulent air fluctuations.
Location:5
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Record ID:46/317


Date:1/1/1976
Subject:(46) Microphysics - Warm Cloud
Author:Roach, W.T.
Title:On the effect of radiative exchange on the growth by condensation of a cloud or fog droplet.
Publication:Q.J. Royal Met. Soc., 102, 361-372
Abstract:The effect of radiative heat transfer on droplet growth is assessed.
Location:5
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Record ID:46/318


Date:1/1/1988
Subject:(46) Microphysics - Warm Cloud
Author:Robichaud, A.J., G.L. Austin
Title:On the modelling of warm orographic raind by the seeder-feeder mechanism
Publication:Q.J. Royal Met. Soc., 114, 967-988
Abstract:A 2D model of the seeder-feeder mechanism for the orographic enhancement of rain is presented.
Location:5
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Record ID:46/319


Date:1/1/1938
Subject:(46) Microphysics - Warm Cloud
Author:Rossby, C.-G.
Title:On the mutual adjustment of pressure and velocity distributions in certain simple current systems, II.
Publication:J. Marine Res., Vol. 1, No. 3, 239-263
Abstract:In a previous report the author investigated certain changes in the mass distribution which accompany the slow lateral diffusion of momentum in a straight parallel current in an unlimited ocean of constant depth.
Location:5
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Record ID:46/320


Date:5/1/1966
Subject:(46) Microphysics - Warm Cloud
Author:Scott, W.T.
Title:Poisson statistics in distributions of coalescing droplets.
Publication:Desert Research Inst., Preprint Series No. 34, Reno, NV
Abstract:The statistical behavior of a collection of cloud droplets distributed by volume and possibly also with position in space in discussed by the use of master functions.
Location:5
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Record ID:46/321


Date:8/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T.
Title:Wind shear effects on water accumulation and rain duration in Hawaiian warm clouds.
Publication:J. Met. Soc. of Japan, 64, 575-584
Abstract:Aircraft observations of warm rain in Hawaii were analyzed concerning the effect of wind shear on the drop growth processes in different cloud types.
Location:5
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Record ID:46/322


Date:11/15/1988
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T.
Title:Long-lasting trade-wind rain showers in a three-dimensional model
Publication:J. Atmos. Sci., 45, 3333-3353
Abstract:A 3D warm rain model that included microphysics was used to study the reasons for ease of rainfall in Hawaiian clouds and the long-lasting rainfall from certain rainbands.
Location:5
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Record ID:46/323


Date:6/1/1985
Subject:(46) Microphysics - Warm Cloud
Author:Committee on Nucleation and Atmospheric Aerosols, International Commission on Cloud Physics
Title:Nucleation terminology
Publication:J. Aerosol Sci., 16, 575-576
Abstract:As the pace of research dealing with atmospheric water and ice nucleation accelerated over the past quarter of a century, occasional miscommunication and frequent lack of clarity resulted from the variations in usage of terms describing nuclei of different types and resulted from the variations in usage of terms...
Location:5
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Record ID:46/324


Date:07/01/1991
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:McFarquhar, G.M., R. List
Title:The evolution of three-peak raindrop size distributions in one-dimensional shaft models. Part I:: Multiple pulse rain
Publication:J. Atmos. Sci., 48, 1587-1595
Abstract:The release of multiple pulses of rain with durations of 120 s -1
Location:7
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Record ID:46/325


Date:05/01/1991
Subject:(46) Microphysics - Warm Cloud
(19) Cumulus
(21) Cumulus Dynamics
Author:Kogan, Y.L.
Title:The simulation of a convective cloud in a 3-D model with explicit microphysics. Part I: Model description and sensitivity experiments
Publication:J. Atmos. Sci., 48, 1160-1189
Abstract:A three-dimensional nonhydrostatic anelastic numerical model of a convective cloud with an explicit description of microphysical processes has been developed. Two distribution functions are considered in the model--one for cloud condensation nuclei (19 categories from 0.0076 to 7.6 microns) and another for cloud droplets and raindrops (30 categories on a logarithmic scale from 4 to 3250 microns. The prognostic kinetic equations
Location:7
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Record ID:46/326


Date:1/1/1995
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Ghan, S.J., C.C. Chuang, R.C. Easter, J.E. Penner
Title:A parameterization of cloud droplet nucleation. Part II: Multiple aerosol types
Publication:Atmos. Res., 36, 39-54
Abstract:A parameterization of cloud droplet nucleation for a single, log-normally distributed, aerosol type is generalized to the case of multiple aerosol types with differing size distributions and compositions.
Location:7
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Record ID:46/327


Date:08/01/1992
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Ghan, S.J., R.C. Easter
Title:Computationally efficient approximations to stratiform cloud microphysics parameterization
Publication:Mon. Wea. Rev., 120, 1572-1582
Abstract:Bulk cloud microphysics parameterizations typically employ time steps of a few tens of seconds.
Location:7
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Record ID:46/328


Date:1/1/1991
Subject:(46) Microphysics - Warm Cloud
Author:Illinois State Water Survey
Title:1989-1990 Reprint Collection on Cloud Physics Research
Publication:Illinois State Water Survey and Dept. of Atmos. Sci., Univ. of Ill at Champagne
Abstract:Various
Location:7
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Record ID:46/329


Date:6/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Hu, Z.
Title:A numerical study of the evolution of raindrop size distribution by coalescence breakup and evaporation.
Publication:Lab for Atmos. Probing, Dept. of Geosci., Univ. of Chicago, Tech. Report No. 55
Abstract:We study the evolution of raindrop size distribution by coalescence, breakup and evaporation.
Location:7
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Record ID:46/330


Date:12/1/1981
Subject:(46) Microphysics - Warm Cloud
Author:Alofs, D.J., T.-H. Liu
Title:Atmospheric measurements of CCN in the supersaturation range 0.013-0.6815
Publication:J. Atmos. Sci., 38, 2772-2778
Abstract:Concentrations of CCN in the atmosphere were measured at Rolla, Missouri, near ground level.
Location:7
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Record ID:46/331


Date:10/31/1991
Subject:(46) Microphysics - Warm Cloud
Author:Ayers, G.P., J.L. Gras
Title:Seasonal relationship between cloud condensation nuclei and aerosol methanesulphonate in marine air.
Publication:Nature, 353
Abstract:Charlson et al. have suggested that cloud-droplet concentrations in remote marine regions might be indirectly controlled by dimethylsulphide emissions from marine phytoplankton.
Location:7
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Record ID:46/332


Date:0/0/1990
Subject:(46) Microphysics - Warm Cloud
Author:Blyth, A.M., J. Latham
Title:Airborne studies of the altitudinal variability of the microphysical structure of small, ice-free, Montanan cumulus clouds.
Publication:Q.J. Royal Met. Soc., 116, 1405-1423
Abstract:The Univ. of Wyoming's instrumented King-Air aeroplane made special multiple-altitude passes through seven non-precipitating, essentially ice-free summertime cumulus clouds...
Location:7
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Record ID:46/333


Date:0/0/1993
Subject:(46) Microphysics - Warm Cloud
Author:Choularton, T.W., K.N. Bower
Title:A model of the development of droplet effective radius in convective cloud
Publication:Q.J. Royal Met. Soc., 119, 443-456
Abstract:A model is presented of a growing cumulus turret which is used to investigate the sensitivity of the droplet effective radius in a convective cloud to variations in the cloud-base temperature...
Location:7
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Record ID:46/334


Date:0/0/1991
Subject:(46) Microphysics - Warm Cloud
Author:Francisco, R.V., J.. Mondares
Title:A numerical study of warm cloud interactions
Publication:Atmosfera, 4, 117-138
Abstract:A 2D, slab-symmetric cloud model with detailed microphysics is presented.
Location:7
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Record ID:46/335


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Fukuta, N.
Title:Water supersaturation in convective clouds
Publication:Atmos. Res., 30, 105-126
Abstract:The microphysics-dynamics interaction of clouds was theoretically studied in the zone after maximum supersaturation where the droplet number concentration remains nearly constant.
Location:7
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Record ID:46/336


Date:11/20/1991
Subject:(46) Microphysics - Warm Cloud
Author:Gerber, H.
Title:Direct measurement of suspended particulate volume concentration and far-infrared extinction coefficient with a laser-diffraction instrument
Publication:Appl. Optics, 30, 4824-4831
Abstract:A laser-diffraction instrument is described for measuring directly and in situ the absolute particulate volume concentration or the infrared optical extinction coefficient of a polydisperse aerosol.
Location:7
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Record ID:46/337


Date:12/1/1990
Subject:(46) Microphysics - Warm Cloud
Author:Gossard, E.E., R.G. Strauch, R.R. Rogers
Title:Evolution of dropsize distributions in liquid precipitation observed by ground-based Doppler radar
Publication:J. Atmos. and Ocean. Tech., 7, 815-828
Abstract:A technique is described for using ground-based Doppler radars to monitor the development of the drop-size spectra of number density, liquid-water density, and liquid flux, in time and height.
Location:7
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Record ID:46/338


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Hauf, T.
Title:Microphyscal kinetics in phase space: The warm rain process
Publication:Atmos. Res., 29, 55-84
Abstract:The budget equations for a spatially homogeneous, isobaric and adiabatic system of cloudy air with only warm rain processes are considered.
Location:7
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Record ID:46/339


Date:1/1/1986
Subject:(46) Microphysics - Warm Cloud
Author:Hill, T.A., T.W. Choularton
Title:A model of the development of the droplet spectrum in a growing cumulus turret
Publication:Q.J. Royal Met. Soc., 112, 531-554
Abstract:A model is presented which describes the growth of the droplet spectrum in a growing cumulus turret in which the vertical velocities are determined by buoyancy forces.
Location:7
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Record ID:46/340


Date:1/23/1994
Subject:(46) Microphysics - Warm Cloud
Author:Hudson, J.G., H.G. Li
Title:The determination of cloud droplet spectra.
Publication:74th AMS Meeting, 23-28 Jan. 1994, Nashville, Tenn., Atmos. Radiation Conference
Abstract:One of the most consistent cloud microphysical observations is the narrowness of the droplet size spectra for high droplet concentrations.
Location:7
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Record ID:46/341


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Johnson, D.B.
Title:The onset of effective coalescence growth in convective clouds.
Publication:Q.J. Royal Met. Soc., 119, 925-933
Abstract:This study examines the microphysical and environmental conditions necessary to support rapid coalescence growth in warm convective clouds.
Location:7
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Record ID:46/342


Date:1/1/1995
Subject:(46) Microphysics - Warm Cloud
Author:Khain, A.P., I.L. Sednev
Title:Simulation of hydrometeor size spectra evolution by water-water, ice-water and ice-ice interactions.
Publication:Atmos. Res., 36, 107-138
Abstract:Hydrometeors spectra evolution induced by coalescence process is simulated using a microphysical model of the Berry and Reinhardt (1974) type including hydrometeors of seven kinds...
Location:7
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Record ID:46/343


Date:8/1/1978
Subject:(46) Microphysics - Warm Cloud
Author:Kogan, Y.L.
Title:A three-dimensional numerical model of a liquid-drop cumulus cloud that takes account of microphysical processes
Publication:Izvestiya, Atmos. and Ocean. Phys., 14, 8, 617-623
Abstract:A 3d model of a liquid-drip cumulus cloud with a description of the microphysical processes on the basis of the kinetic equations for 30 groups of drops from 4 to 3250 um and 19 groups of condensation nuclei from 0.008 to 7.6 um is presented.
Location:7
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Record ID:46/344


Date:1/1/1979
Subject:(46) Microphysics - Warm Cloud
Author:Kogan, Y.L.
Title:Spatial and time evolution of a warm cumulus cloud in a warm three-dimensional numerical model.
Publication:Izvestiya, Atmos. and Ocean. Phys., 15, 9, 644-650
Abstract:The development of a maritime cloud is investigated on the basis of a 3D numerical model that includes kinetic equations for the size distribution functions of the condensation and cloud droplets.
Location:Citation Only, Full Text Not In Library
Record ID:46/345


Date:1/1/1994
Subject:(46) Microphysics - Warm Cloud
Author:Leaitch, W.R., G.A. Isaac
Title:On the relationship between sulfate and cloud droplet number concentrations
Publication:J. Climate, 7, 206-212
Abstract:Comparisons are drawn between the aerosol cloud microphysical theory they implicit in the modeling of Kaufman et al. and the cloud droplet and cloud water sulfate concentrations of Leaitch et al. for the purpose of helping to understand the effect of sulfate particles on climate through cloud modification.
Location:7
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Record ID:46/346


Date:11/20/1993
Subject:(46) Microphysics - Warm Cloud
Author:Lin, X.
Title:Reply
Publication:J. Geo. Res., 98, D11, 20,815-20,816
Abstract:A response to Hegg's (this issue) most recent comment follows below.
Location:Citation Only, Full Text Not In Library
Record ID:46/347


Date:4/9/1993
Subject:(46) Microphysics - Warm Cloud
Author:Lin, X.
Title:CCN formation from DMS oxidation without SO2 acting as an intermediate
Publication:Geo. Res. Letters, 20, 7, 579-582
Abstract:An alternate pathway for generating CCN in the remote marine boundary layer from the oxidation of biogenically-derived DMS is proposed.
Location:7
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Record ID:46/348


Date:1/1/1990
Subject:(46) Microphysics - Warm Cloud
Author:Lomaya, V.A., I.P. Mazin, A.I. Neizvestnyy
Title:Effect of turbulence on the coagulation efficiency of cloud droplets
Publication:Izvestiya, Atmos. and Ocean. Phys., 26, 8, 595-600
Abstract:Numerical calcuations of the coefficient of coagulation of cloud droplets are made for the turbulent-gravitational collision mechanism, using an improved and corrected version of the de Almeida numerical model
Location:7
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Record ID:46/349


Date:3/1/1994
Subject:(46) Microphysics - Warm Cloud
Author:Platnick, S., S. Twomey
Title:Determining the susceptibility of cloud albedo to changes in droplet concentration with the advanced very high resolution radiometer.
Publication:J. Appl. Met., 33, 334-347
Abstract:Combustion processes that produce greenhouse gases also increase CCN concentrations, which in turn increase cloud droplet concentrations and thereby cloud albedo.
Location:7
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Record ID:46/350


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Raga, G.B., P.R. Jonas
Title:On the link between cloud-top radiative properties and sub-cloud aerosol concentrations
Publication:Q.J. Royal Met. Soc., 119, 1419-1425
Abstract:Microphysical observations obtained in cumulus clouds over the sea are presented and related to background pollution levels.
Location:7
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Record ID:46/351


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Raga, G.B., P.R. Jonas
Title:On the link between cloud-top radiative properties and sub-cloud aerosol concentrations
Publication:Q.J. Royal Met. Soc., 119, 1419-1425
Abstract:Microphysical observations obtained in cumulus clouds over the sea are presented and related to background pollution levels.
Location:7
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Record ID:46/352


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Raga, G.B., P.R. Jonas
Title:Microphysical and radiative properties of small cumulus clouds over the sea
Publication:Q.J. Royal Met. Soc., 119, 1399-1417
Abstract:Microphysical and radiative data obtained in fields of cumulus clouds over the sea around the U.K. are presented.
Location:7
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Record ID:46/353


Date:1/1/1990
Subject:(46) Microphysics - Warm Cloud
Author:Roesner, S., A.I. Flossman, H.R. Pruppacher
Title:The effect on the evolution of the drop spectrum in clouds of the preconditioning of air by successive convective elements.
Publication:Q.J. Royal Met. Soc., 116, 1389-1403
Abstract:A multiple air-parcel model is used to study the effect on the drop size spectrum inside convective clouds of preconditioning of air by successive convective elements.
Location:7
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Record ID:46/354


Date:1/1/1994
Subject:(46) Microphysics - Warm Cloud
Author:Saxena, V.K., J.D. Grovenstein
Title:The role of clouds in the enhancement of cloud condensation nuclei concentrations
Publication:Atmos. Res., 31, 71-89
Abstract:There exist 3 possible mechanisms for the enhancement of CCN in the vicinity aof and within clouds.
Location:7
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Record ID:46/355


Date:1/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:Smith, M.H., P.M. Park, I.E. Consterdine
Title:Marine aerosol concentrations and estimated fluxes over the sea
Publication:Q.J. Royal Met. Soc., 119, 809-824
Abstract:Aerosol particulate fluxes, generated at the sea surface by the action of the wind, have been derived from a comprehensive series of measurements taken in the Outer Hebrides, off the west coast of Scotland.
Location:7
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Record ID:46/356


Date:9/1/1992
Subject:(46) Microphysics - Warm Cloud
Author:Srivastava, R.C., J.L. Coen
Title:New explicit equations for the accurate calculations of the growth and evaporation of hydrometeors by the diffusion of water vapor.
Publication:J. Atmos. Sci., 1643-1651
Abstract:The traditional explicit growth equation has been widely used to calculate the growth and evaporation of bydrometeors by the diffusion of water vapor.
Location:7
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Record ID:46/357


Date:8/1/1978
Subject:(46) Microphysics - Warm Cloud
Author:Takahashi, T.
Title:Raindrop size distribution with collision breakup in an axisymmetric warm cloud model
Publication:J. Atmos. Sci., 35, 549-1553
Abstract:The effect of the collision breakup process, as described by McTaggart-Cowan (1975), on the raindrop size distribution and rainfall intensity in warm clouds was studied using an axisymmetric cloud model (Takahashi, 1977).
Location:7
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Record ID:46/358


Date:5/1/1993
Subject:(46) Microphysics - Warm Cloud
Author:von der Emde, K., U. Wacker
Title:Comments on the relationship between aerosol spectra, equilibrium drop size spectra, and CCN spectra
Publication:Beitr. Phys. Atmos., 66, 157-162
Abstract:The relationship between the radius of a drop's dry nucleus, the drop's radius in stable equilibrium, its critical radius and the critical supersaturation is re-examined using the Kohler-Kelvin-theory to show the connection between the spectral distributions of aerosol...
Location:7
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Record ID:46/359


Date:1/1/1961
Subject:(46) Microphysics - Warm Cloud
Author:Waldmann, L.
Title:Applications of kinetic theory
Publication:Advances in Applied Mechanics. Supplement 1 Rarefield Gas Dynamics, L. Tabot, Ed., Academic Press, NY
Abstract:Theoretical and experimental studies have been made of the forces exerted on a sphere in a gas at rest due to the presence of temperature gradient in a heat conducting gas and concentration gradient in a binary diffusing gas mixture.
Location:7
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Record ID:46/360


Date:01/01/1998
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Pinsky, M.B., A.P. Khain
Title:Some effects of cloud turbulence on water-ice and ice-ice collisions
Publication:Atmos. Res., 47-48, 69-86
Abstract:Formation of relative velocities between low-density ice particles and the surrounding air within a turbulent medium is analyzed
Location:7
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Record ID:46/361


Date:11/15/1998
Subject:(46) Microphysics - Warm Cloud
Author:Cohard, J.M., J.P. Pinty, C. Bedos
Title:Extending Twomey's analytical estimate of nucleated cloud droplet concentrations from CCN spectra
Publication:J. Atmos. Sci., 55, 3348-3357
Abstract:A fundamental but approximate formula has been established by Twomey in order to compute the nucleated cloud droplet number concentration as a function of the vertical velocity of the CCN
Location:3
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Record ID:46/362


Date:11/15/1998
Subject:(46) Microphysics - Warm Cloud
Author:Ghan, S.J., G. Guzman, H. Abdul-Razzak
Title:Competition between sea salt and sulfate particles as cloud condensation nuclei
Publication:J. Atmos. Sci., 55, 3340-3347
Abstract:The influence of sea salt on the cloud droplet activation of sulfate particles is investigated using a size-resolving model of the aerosol activiation process.
Location:2
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Record ID:46/363


Date:1/1/1980
Subject:(46) Microphysics - Warm Cloud
Author:Baker, M.B., R.G. Corbin, J. Latham
Title:The influence of entrainment on the evolution of cloud droplet spectra: I. A model of inhomogeneous mixing.
Publication:Q. J. Royal Met. Soc., 106, 581-598
Abstract:In this, the first of two related papers, we present calculations of the growth of a population of condensate droplets rising above cloud base within small cumuli which are entraining undersaturated environmental air.
Location:4
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Record ID:46/364


Date:01/01/1980
Subject:(46) Microphysics - Warm Cloud
Author:Telford, J.W., S.K. Chai
Title:A new aspect of condensation theory.
Publication:Pageoph, Vol. 118, Birkhauser Verlag, Basel, 720-742
Abstract:This paper examines the effects of the mixing of dry air into a cloud top from the point of view of the droplet spectra.
Location:3
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Record ID:46/365


Date:03/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Tokay, A., D.A. Short, C.R. Williams, W.L. Ecklund, K.S. Gage
Title:Tropical rainfall associated with convective and stratiform clouds: Intercomparison of Disdrometer and Profiler measurements
Publication:J. App. Meteor., 38, pp. 302-320
Abstract:The motivation for this research is to move in the direction of improved algorithm for the remote sensing of rainfall, which are crutial for meso- and large-scale circulation studies and climate applications through better determinations of precipitaion type and latent heating profiles.
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Record ID:46/366


Date:05/15/1999
Subject:(46) Microphysics - Warm Cloud
Author:Grabowski, W.W., P. Vaillancourt
Title:Comments on
Publication:J. Atmos. Sci, 56, pp. 1433-1436
Abstract:None.
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Record ID:46/367


Date:08/01/1979
Subject:(46) Microphysics - Warm Cloud
Author:de Almeida, F.C.
Title:The collisional problem of cloud droplets moving in a turbulent environment--Part II: Turbulent collision efficiencies
Publication:J. Atmos. Sci., 36, 1564-1576
Abstract:The collision efficiencies for small cloud drops moving under the influence of gravity in a viscous, incompressible, turbulent medium are obtained for drop radii of 10 um < R_1 < 50 um and droplet/drop ratios of 0 < R_2/R_1 < 1.
Location:2
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Record ID:46/368


Date:01/01/1997
Subject:(46) Microphysics - Warm Cloud
Author:Khain, A.P., M.B. Pinsky
Title:Turbulence effects on the collision kernel. II: Increase of the swept volume of colliding drops
Publication:Q.J.R. Meteorol. Soc., 123, 1543-1560
Abstract:An equation is deduced which gives the relative velocity between drops falling in three-dimensional turbulent flow.
Location:2
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Record ID:46/369


Date:06/01/1986
Subject:(46) Microphysics - Warm Cloud
Author:Neizvestnaya, A.I., A.G. Kobzunenko
Title:Effect of small-scale turbulence on the coagulation growth rate of cloud droplets
Publication:Izv., Atmos. Ocean. Phys, 22, 481-487
Abstract:A procedure and experimental data are described concerning the effect of small-scale turbulence on the capture coefficient for cloud droplets.
Location:7
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Record ID:46/370


Date:01/01/1997
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M.B., A.P. Khain
Title:Turbulence effects on the collision kernel. I: Formation of velocity deviations of drops falling within a turbulent three-dimensional flow
Publication:Q.J.R. Meteorol. Soc., 123, 1517-1542
Abstract:The fall of drops in three-dimensional stationary homogeneous turbulent flow is investigated.
Location:2
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Record ID:46/371


Date:01/01/1996
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M.B., A.P. Khain
Title:Simulations of drop fall in a homogeneous isotropic turbulent flow
Publication:Atmos. Res., 40, 223-259
Abstract:Drop motion in a turbulent flow is studied using a model of homogeneous and isotrpic turbulence.
Location:2
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Record ID:46/372


Date:07/01/1997
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M.B., A.P. Khain
Title:Turbulence effects on droplet growth and size distribution in clouds--a review
Publication:J. Aerosol Sci., 28, 1177-1214
Abstract:This paper is focused on inertia effects among drops moving within a turbulent cloud on size distribution and formation of rain.
Location:2
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Record ID:46/373


Date:01/02/1998
Subject:(46) Microphysics - Warm Cloud
Author:Vaillancourt, P.
Title:Microscopic approach to cloud droplet growth by condensation
Publication:Ph.D. dissertation, McGill University, Montreal, Quebec, Canada, 155 pp.
Abstract:Traditionally, the diffusionl growth of a cloud droplet population is calculated using values of the environmental conditions that represent averages over large volumes, the so-called macroscopie conditions
Location:2
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Record ID:46/374


Date:01/01/1998
Subject:(46) Microphysics - Warm Cloud
Author:Wacker, U., F. Herbert
Title:Thermodynamic non-equilibrium theory of the condensational growth of atmospheric water drops
Publication:Meteorol. Atmos. Phys., 66, 173-195
Abstract:The application of the theory of non-equilibrium thermodynamics to phenoman of cloud micro-physics has been examined for the example of mass growth of atmopsheric water drops due to vapour diffusion and condensation.
Location:7
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Record ID:46/375


Date:01/01/1972
Subject:(46) Microphysics - Warm Cloud
Author:Woods, J.D., J.C. Drake, P. Goldsmith
Title:Coalesence in a turbulent cloud
Publication:Quart. J.R. Met. Soc., 98, 135-149
Abstract:The results of two experiments show that the collision efficiency of small droplets is significantly increased when the interacting drops fall through a laminar shear flow of about 10 s^-1.
Location:2
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Record ID:46/376


Date:07/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Telford, J.W.
Title:Comments on
Publication:J. Atmos. Sci., 56, pp. 2261-2263
Abstract:None.
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Record ID:46/377


Date:07/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Hudson, J.G., S.S. Yum
Title:Reply to
Publication:J. Atmos. Sci., 56, pp. 2264-2265
Abstract:None.
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Record ID:46/378


Date:08/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Pinksy, M., A. Khain, M. Shapiro
Title:Collisions of small drops in a turbulent flow. Part I: Collision efficiency, problem formulation and preliminary results
Publication:J. Atmos. Sci., 56, pp. 2585-2600
Abstract:A mathematical approach to the calculation of the collision efficiency between droplets within a turbulent flow is suggested.
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Record ID:46/379


Date:09/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Celik, F., J. D. Marwitz
Title:Droplet spectra broadening by ripening process. Part I: Roles of curvature and salinity of cloud droplets
Publication:J. Atmos. Sci., 56, pp. 3091-3105
Abstract:The
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Record ID:46/380


Date:11/15/1999
Subject:(46) Microphysics - Warm Cloud
Author:Jameson, A. R., A. B. Kostinski
Title:Fluctuation properties of precipitation. Part V: Distribution of rain rates--theory and observations in clustered rain
Publication:J. Atmos. Sci., 56, pp. 3920-3932
Abstract:Recent studies have led to the statistical characterization of the flux of drops of a particular size as a doubly stochastic Poisson process (Poisson mixture). Moreover, previous papers in this series show that the fluxes at different sizes are correlated among each other both temporarlly and spatially over many different scales.
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Record ID:46/381


Date:12/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Khvorostyanov, V. I., J. A. Curry
Title:Toward the theory of stochastic condensation in clouds. Part I: A general kinetic equation
Publication:J. Atmos. Sci., 56, pp. 3985-3996
Abstract:In order to understand the mechanisms of formation of broad size spectra of cloud droplets and to develop a basis for the parameterization of cloud microphysical and optical properties, the authors derive a general kinetic equation of stochastic condensation that is applicable for various relationships between the supersaturation relaxation time and the timescale of turbulence.
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Record ID:46/382


Date:12/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Khvorostyanov, V. I., J. A. Curry
Title:Toward the theory of stochastic condensation in clouds. Part II: Analytical solutions of the gamma-distribution type
Publication:J. Atmos. Sci., 56, pp. 3997-4013
Abstract:The kinetic equation of stochastic condensation derived in Part I is solved analytically under some simplifications.
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Record ID:46/383


Date:11/01/1999
Subject:(46) Microphysics - Warm Cloud
Author:Li, J., Y.-L. Chen
Title:A case study of nocturnal rain showers over the windward coastal region of the island of Hawaii
Publication:Mon. Wea. Rev., 127, pp. 2674-2692
Abstract:Nocturnal rain showers over the windward side of the island of Hawaii were investigated from the late afternoon of 2 August to the early morning of 3 August 1990 during the Hawaiian Rainband Project (HaRP).
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Record ID:46/384


Date:01/15/2000
Subject:(46) Microphysics - Warm Cloud
Author:Bott, A.
Title:A flux method for the numerical solution of the stochastic collection equation: extension to two dimensional particle distributions
Publication:J. Atmos. Sci., 57, 284-294
Abstract:In th present paper a new method is introduced for the numerical solution collection equation in cloud models dealing with two-dimensional cloud microphysics. The method is based on the assumption that the probability for the collision of two cloud drops only depends on the water mass of each and not on the mass of the aerosol nuclei.
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Record ID:46/385


Date:06-10-1999
Subject:(46) Microphysics - Warm Cloud
Author:Carrio, G. G., M. Naicolini
Title:A double moment warm rain scheme: description and test within a kineatic framework
Publication:Atmos. Res. 52, 1-16
Abstract:A two-moment warm parameterization that includes prognostic equations for mixing ratios and number concentrations is described. The number of activated condensation nuclei is also prognosed assuming a log-linear relationship between the number of activated condensation nucli and supersation.
Location:1
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Record ID:46/386


Date:06/07/1999
Subject:(46) Microphysics - Warm Cloud
Author:Grabowski, W.W.
Title:A parameterization of cloud mircophysics for long-term cloud-resolving modeling of tropical convection
Publication:Atmos. Res. 52, 17-41
Abstract:This paper documents development of a simple cloud microphysical paramenterization for use in long-term cloud-resolving simulations of maritime tropical convection. The parameterization is based on the bulk approach and considers two classes of liquid water (cloud water and rain) and two classes of ice (slowly falling ice A ans fast falling ice B).
Location:1
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Record ID:46/387


Date:04/07/1999
Subject:(46) Microphysics - Warm Cloud
Author:Zou, Y.-S., N. Fukuta
Title:The effect of diffusion kinetics on the supersaturation in clouds
Publication:Atmos. Res., 52, 115-141
Abstract:The describe the nucleation-growth interaction at and above, a cloud model has been formulated including the haze process below the cloud base and before nucleation of cloud droplets, and a proper diffusion-kinetic droplet growth equation. Analytical equations for the maximum supersaturation by Twomey[Twomey, S., 1959.
Location:1
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Record ID:46/388


Date:9/15/1986
Subject:(46) Microphysics - Warm Cloud
Author:Paluch, I.R., C.A. Knight
Title:Does mixing promote cloud droplet growth?
Publication:J. Atmos. Sci., 43, 1994-1998
Abstract:A systematic examination of cloud droplet size spectra from the CCOPE reveals no tendency for an increase in the maximum droplet size with increasing dilution of cloud age.
Location:5
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Record ID:46/389


Date:06/01/1985
Subject:(46) Microphysics - Warm Cloud
(19) Cumulus
Author:Austin, P.H., M.B. Baker, A.M. Blyth, J.B. Jensen
Title:Small-scale variability in warm continental cumulus clouds
Publication:J. Atmos. Sci., 42, 1123-1138
Abstract:We have analyzed small-scale fluctuations in microphysical, dynamical and thermodynamical parameters measured in two warm cumulus clouds during the Cooperative Convective Precipitation Experiment (CCOPE) project (1981) in light of predictions of several
Location:5
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Record ID:46/390


Date:05/15/2000
Subject:(46) Microphysics - Warm Cloud
Author:Korolev, A.V., G.A. Isaac
Title:Drop growth due to high supersaturation caused by isobaric mixing
Publication:J. Atmos. Sci., 57, 1675-14685
Abstract:A new conceptual model is proposed for enhanced cloud droplet growth during condensation
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Record ID:46/391


Date:01/01/1994
Subject:(46) Microphysics - Warm Cloud
(14) Cloud Physics
Author:Cloud Physics Research
Title:8th Reprint Collection - 1994-95
Publication:Univ. of Illinois at Urbana-Champaign, Dept. of Atmos. Sci., Dept. of Civil Eng., and Illinois State Water Survey, contributors
Abstract:Collection of published articles.
Location:7
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Record ID:46/392


Date:06/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:Robert Cifelli, C. R. Williams, D. K. Rajopadhyaya, S. K. Avery, K. S. Gage, P. T. May
Title:Drop-Size Distribution Characteristics in Tropical Mesoscale Convective Systems
Publication:J. Appl. Met., 39, 760-777
Abstract:Drop-size distribution charterirtics were retrieved in eight tropical mesoscale convective systems (MCS) using a dual-frequency (UHF and VHF) wind profiler technique.
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Record ID:46/393


Date:01/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:Costa, A.A., C.J. de Olivera, J.C.P. de Olivera, A.J.D.C. Sampaio
Title:Microphysical observations of warm cumulus clouds in Ceara, Brazil
Publication:Atmos. Res., 54, 167-199
Abstract:Microphysical properties of shallow, warm cumulus clouds, such as droplet concentration, shape of the spectra, etc., may vary due to several factors, from the large-scale environment to microphysical processes on very small scales.
Location:1
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Record ID:46/394


Date:07/20/1995
Subject:(46) Microphysics - Warm Cloud
(66) Stratiform/Stratocu Clouds
Author:Austin, P.H., S. Siems, Y. Wang
Title:Constraints on droplet growth in radiatively cooled stratocumulus clouds
Publication:J. Geophys. Res., 100, 14,231-14,242
Abstract:Radiative cooling near the top of a layer cloud plays a dominant role in droplet condensation growth.
Location:2
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Record ID:46/395


Date:01/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:French, J.R., G. Vali, R.D. Kelly
Title:Observations of microphysics pertaining to the development of drizzle in warm, shallow cumulus clouds
Publication:Q.J.R. Meteorol. Soc., 126, 415-443
Abstract:The evolution of drizzle in small cumulus clouds in a subtropical environment was studied.
Location:1
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Record ID:46/396


Date:08/01/1980
Subject:(46) Microphysics - Warm Cloud
(29) Fogs
Author:Guzzi, R., R. Rizzi
Title:The effect of radiative exchange on the growth by condensation of a population of droplets
Publication:Contrib. Atmos. Physc., 53, 351-365
Abstract:The effect of the longwave transfer between a population of droplets growing by condensation and the environment is investigated.
Location:2
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Record ID:46/397


Date:11/20/1998
Subject:(46) Microphysics - Warm Cloud
Author:Ji, Q., G.E. Shaw, W. Cantrell
Title:A new instrument for measuring cloud condensation nuclei: Cloud condensation nucleus 'remover'
Publication:J. Geophys. Res., 103, 28,013-28,019
Abstract:This communique describes a new and novel instrument for measuring concentrations of natural cloud condensation nuclei (CCN) from the free atmosphere.
Location:1
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Record ID:46/398


Date:01/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M., A. Khain, M. Shapiro
Title:Stochastic effects of cloud droplet hydrodynamic interaction in a turbulent flow
Publication:Atmos. Res., 53, 131-169
Abstract:The collision efficiencies of small cloud droplets are calculated in a turbulent flow.
Location:3
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Record ID:46/399


Date:05/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:Wacker, U.
Title:An analytical study on the evolution of the vertical profile of rain water concentration
Publication:Geophys. Res. Ltrs., 27, 1275-1278
Abstract:This contribution hints at a series problem in modelling the vertical profile of rain water concentration, which evolves under the effect of sedimentation, when cloud microphysical processes are presented in terms of familar one-variable parameterization.
Location:2
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Record ID:46/400


Date:7/00/1971
Subject:(46) Microphysics - Warm Cloud
Author:Mathews, D.A.
Title:Effects of raindrop spectra on a cumulus model
Publication:Dept of Atmos Sci CSU, paper 174
Abstract:A review of observed and theoretical raindrop distriutions is presented.
Location:0
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Record ID:46/401


Date:01/01/1972
Subject:(46) Microphysics - Warm Cloud
Author:Jonas, P.R., P. Goldsmith
Title:The collection efficiencies of small droplets falling through a sheared air flow
Publication:J. Fluid Mech., 52, 593-608
Abstract:Experiments in which collection efficiencies have been measured for small droplets falling through a sheared air flow are described.
Location:7
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Record ID:46/402


Date:0/0/2000
Subject:(46) Microphysics - Warm Cloud
Author:Cohard, J.M., J.P. Pinty
Title:A comprehensive two-moment warm microphysical bulk scheme I: description and tests
Publication:Q.J.R. Meteor. Soc., 126, 1815-1842
Abstract:A bulk microphysical scheme which predicts the concentration and mixing ratios of cloud droplets and raindrops in presented.
Location:1
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Record ID:46/403


Date:0/0/2000
Subject:(46) Microphysics - Warm Cloud
Author:Cohard, J.M., J.P. Pinty
Title:A comprehensive two-moment warm microphysical bulk scheme II: 2D experiments with a non-hydrostatic model
Publication:Q.J.R. Meteor. Soc., 126, 1843-1859
Abstract:A new bulk microphysical scheme containing advanced parametrizations to predict both concentration and mixing ration of cloud droplets and raindrops (see Part I) is impemented in a three-dimensional non-hydrostatic model.
Location:1
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Record ID:46/404


Date:10/15/2000
Subject:(46) Microphysics - Warm Cloud
Author:Gorgucci, E., G. Scarchilli, V. Chandrasekar, V.N. Bringi
Title:Measurement of mean raindrops shape from polaromtric radar observations
Publication:JAS, 57, 3406-3413
Abstract:Interpreatation of polarimetric radar measurements in railfall such as differential reflectivity and specific differential phase shifts depends on the mean raindrops shape-size relationship.
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Record ID:46/405


Date:10/15/2000
Subject:(46) Microphysics - Warm Cloud
Author:Shaw, R.A.
Title:Supersaturation intermittency in turbulent clouds
Publication:JAS, 57, 3452-3456
Abstract:it is hypothesized that bursts of high supersaturation are produced in tubulent, convective clouds through interactions beteen clouds drioplets and the small-scale structure of atmospheric turbulence.
Location:8
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Record ID:46/406


Date:11/15/2000
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Laird, N.F., H.T. Ochs III, R.M. Rauber, L.J. Miller
Title:Initial precipitation formation in warm Florida cumulus
Publication:J. Atmos. Sci., 57, 3740-3751
Abstract:The microphysical processes that lead to the development of precipitation in small, warm cumulus are examined using data form the Small Cumulus Microphysics Study near Cape Canaveral, Florida.
Location:8
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Record ID:46/407


Date:09/01/2000
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Khain, A., M. Ovtchinnikov, M. Pinsky, A. Pokrovsky, H. Krugliak
Title:Review: Notes on the state-of-the-art numerical modeling of cloud microphysics
Publication:Atmos. Res., 55, 159-224
Abstract:Despite significant advances in clod physics, mnay problems exist in the state-of-the-art microphysical cloud modeling.
Location:1
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Record ID:46/408


Date:01/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:Costa, A.A., G.P. Almeida, A.J.C. Sampaio
Title:A bin-microphysics cloud model with high-order, positive-definite advection
Publication:Atmos. Res., 55, 225-255
Abstract:An axisymmetric, anelastic model of convective cloud is described.
Location:1
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Record ID:46/409


Date:02/15/2001
Subject:(46) Microphysics - Warm Cloud
Author:Auf der Maur, A.N.
Title:Statistical tools for drop size distributions: Moments and generalized gamma
Publication:J. Atmos. Sci., 58, 407-418
Abstract:Several problems associated with drop size distributions are treated.
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Record ID:46/410


Date:03/01/2001
Subject:(46) Microphysics - Warm Cloud
Author:Gerber, H., J.B. Jensen, A.B. Davis, A. Marshak, W.J. Wiscombe,
Title:Spectral density of cloud liquid water content at high fequencies
Publication:J. Atmos Sci., 58, 497-503
Abstract:Aircraft measurements of liquid water content (LWC) made at sampling frequencies of 1 and 2 kHz with a particle volume monitor (PVM) probe from horizontal traverses in stratocumulus clouds during the Southern Ocean Cloud Experiment and cumulus clouds during the Small Cumulus Microphysics Study are described.
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Record ID:46/411


Date:03/15/2001
Subject:(46) Microphysics - Warm Cloud
Author:Brenguier, J.-L., L. Chaumat
Title:Droplet Spectra Broadening in Cumulus Clouds. Part I: Broadening in Adiabatic Cores
Publication:J. Atmos. Sci., 58, 628-641
Abstract:Measurements of cloud droplets spectra performed with te Fast-Forward Scattering Probe during the Small Cumulus microphysics Study (1995) are analyzed.
Location:8
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Record ID:46/412


Date:03/15/2001
Subject:(46) Microphysics - Warm Cloud
Author:Chaumat, L., J.-L. Brenguier
Title:Droplet spectra broadening in cumulus clouds. Part II: Microscale droplet concentation heterogeneities
Publication:J. Atmos. Sci., 58, 642-654
Abstract:Cloud samples of narrow spectra observed in adiabatic cores of cumulus clouds are selected and the droplet spatial distribution is examined in order to document microscle heterogeneities of the droplet concentration.
Location:8
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Record ID:46/413


Date:04/01/2001
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M., A. Khain, M. Shapiro
Title:Collision Efficiency of Drops in a Wide Range of Reynolds Numbers: Effects of Pressure on Spectrum Evolution
Publication:J. Atmos. sCi., 58, 742-779
Abstract:An approach is developed enabling one to calculate the collision efficiency and the collision kernel within a wide range of the Reynolds numbers (from 0 to 100) corresponding to drops up to 300-u m radii.
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Record ID:46/414


Date:06/01/2001
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., H.T. Ochs, III, S. Liu
Title:Collisions between small precipitation drops. Part III: Laboratory measurements at reduced pressure
Publication:J. Atmos. Sci., 58, 1395-1408
Abstract:Colisions between drops in free fall were measured at atmospheric pressures of 75 and 545 mb for sizes applicable to self-collection, the process that
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Record ID:46/415


Date:01/01/2001
Subject:(46) Microphysics - Warm Cloud
(60) Atmospheric Radiation
Author:Athanasios, N., S. Ghan, H. Abdul-Razzak, P.Y. Chuang, J.H. Seinfeld
Title:Kinetic limitations on cloud droplet formation and impact on cloud albedo
Publication:Tellus, 53B, 133-149
Abstract:Under certain conditions mass transfer limitations on the growth of cloud condensation nuclei (CCN) may have a signifcant impact on the number of droplets
Location:1
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Record ID:46/416


Date:07/15/2001
Subject:(46) Microphysics - Warm Cloud
Author:Vaillancourt, P.A., M.K. Yau, W.W. Grabowski
Title:Microscopic approach to cloud droplet growth by condensation. Part I: Model description and results without turbulence
Publication:J. Atmos. Sci., 58, 1945-1964
Abstract:Recent observations have shown that even in adiabatic cloud cores, the cloud droplet size distributions are broader than what is expeted if all droplets were exposed to the same supersaturtion.
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Record ID:46/417


Date:10/01/2001
Subject:(46) Microphysics - Warm Cloud
(59) Radar Meteorology
Author:Kato, S., G.G. Mace, E.E. Clothiaux, J.C. Liljegren, R.T. Austin
Title:Doppler cloud radar derived drop size distributions in liquid water stratus clouds
Publication:J. Atmos. Sci., 58, 2895-2911
Abstract:A cloud particle size retrieval algorith that uses radar reflectivity obtained by a 35-GHz Doppler radar and liquid water path estimated from microwave radiometer radiance measurements is developed to infer the size distribution of stratus cloud particles.
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Record ID:46/418


Date:10/01/2001
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Hallett, J., G.A. Isaac
Title:Meeting summary
Publication:Bull., 82, 2259-2263
Abstract:The 13th International Conference on Clouds and Precipitation was held in Reno, Nevada, In August 2000
Location:1
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Record ID:46/419


Date:01/01/2001
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Korolev, A.V., G.A. Isaac, I.P. Mazin, H.W. Barker
Title:Microphysical properties of continental clouds from in situ measurements
Publication:Q.J.R. Meteor. Soc., 127, 2117-2151
Abstract:It Is important to gain knowledge aboutthe microphysical characteristics of continental clouds in order to properly understand their formation, their radiative properties and their ability to produce precipitation.
Location:1
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Record ID:46/420


Date:01/15/2002
Subject:(46) Microphysics - Warm Cloud
Author:Beard, K.V., R.I. Durkee, H.T. Ochs III
Title:Coalescence Efficiency Measuements for Minimally Charges Cloud Drops
Publication:J. Atmos. Sci., 59, 233-243.
Abstract:Laboratory measurments were made of the collision cross section for water drops freely falling in air to evaluate coalescence efficiencies for cloud drops of 55-105-mm radius in a radius ration range of 0.5-1.0.
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Record ID:46/421


Date:02/01/2002
Subject:(46) Microphysics - Warm Cloud
Author:Harshvardhan, S.E. Schwartz, C.M. Benkovitz, G. Guo
Title:Aerosol Influence on Cloud Microphysics Examines by Satellite Measurements and Chemical Transport Modeling
Publication:J. Atmos. Sci.,59, 714-725
Abstract:Anthropogenic aerosols are hypothesized to decrease cloud drop radius and increase cloud droplet number concentration enhancing cloud optical depth and albedo.
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Record ID:46/422


Date:06/15/02
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G., Chuang, P.Y.
Title:Analysis of the Influence of Film-Forming compounds on Droplet Growth: Implicatons for Cloud Microphysical Processes and Climate
Publication:J. Atmos. Sci. Vol. 59
Abstract:Decades of cloud microphysical research have not provided conclusive understanding of the physical processes responsible for droplet spectral broadening.
Location:Citation Only, Full Text Not In Library
Record ID:46/423


Date:02/16/2001
Subject:(46) Microphysics - Warm Cloud
(11) Cirrus
Author:Prenni, A.J., Wise, M.E., Brooks, S.D., Tolbert, M.A.
Title:Ice Nucleation in Sulfuric Acid and Ammonium Sulfate Particles
Publication:J. of Geo. Res., Vol.106, pp. 3037-3044
Abstract:Cirrus clouds are composed of ice particles and are expected to form in the upper troposphere when highly dilute sulfate aerosols cool
Location:3
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Record ID:46/424


Date:07/15/2002
Subject:(46) Microphysics - Warm Cloud
Author:Liu, Y. G., P.H. Daum, J. Hallett
Title:A Generalized Systems Theory for the Effect of Varying Fluctuations on Cloud Droplet Size Distributions
Publication:J. Atmos. Sci., 59, 2279-2290
Abstract:A systems theory has previously been developed by Liu and Hallett to interpret droplet size ditributions in turbulent clouds by utilizing ideas from statistical physics and information theory.
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Record ID:46/425


Date:2001
Subject:(46) Microphysics - Warm Cloud
(14) Cloud Physics
Author:Larson, V.E., R.Wood, P.R. Field, J.C. Golaz, T. H. Vonder- Haar, W.R. Cotton
Title:Systematic biases in the microphysics and thermodynamics of numerical models that ignore subgrid-scale variability
Publication:J. Atmos. Sci., 58, 1117-1128
Abstract:none
Location:reprints box 42
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Record ID:46/426


Date:08/2002
Subject:(46) Microphysics - Warm Cloud
Author:Tisler, P., H. Savijarvi
Title:On the parameterization of precipitation in warm clouds
Publication:Atmos. Res., 63, 163-176
Abstract:The Sundqvist parameterization for warm rain production by autoconversion processes as the function of cloud liquid water mixing ratio m is tested by defining a realistic 'driving' profile m(z) for a maritime low, warm stratocumulus cloud and comparing with various recent observations.
Location:
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Record ID:46/427


Date:12/15/1999
Subject:(46) Microphysics - Warm Cloud
(66) Stratiform/Stratocu Clouds
Author:Feingold, G., W.R. Cotton, S.M. Kreidenweis, J.T. Davis
Title:The impact of giant cloud condensation nuclei on drizzle formation in stratocumulus: Implications for cloud radiative properties
Publication:J. Atmos. Sci., 56, 4100-4117
Abstract:The impact of giant and ultragiant cloud condensation nuclei (>5-um radius) on drizzle formation in stratocumuli is investigated within a number of modeling frameworks.
Location:reprints box 40
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Record ID:46/428


Date:1998
Subject:(46) Microphysics - Warm Cloud
(39) Large Eddy Simulation
Author:Feingold, G., R.L. Walko, B. Stevens, W.R. Cotton
Title:Simulations of marine stratocumulus using a new microphysical parameterization scheme
Publication:Atmos. Res., 47-48, 505-528
Abstract:none.
Location:reprints box 38
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Record ID:46/429


Date:1998
Subject:(46) Microphysics - Warm Cloud
(39) Large Eddy Simulation
Author:Stevens, B., W.R. Cotton, G. Feingold
Title:A critique of one-and two-dimensional models of boundary layer clouds with a binned representations of drop microphysics
Publication:Atmos. Res., 477-448, 529-533
Abstract:none.
Location:reprints box 38
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Record ID:46/430


Date:1996
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Yang, W., W.R. Cotton
Title:Universal approximation formulas of curvature correction and equilibrium sizes of hygroscopic particles
Publication:J. Appl. Met., 35, 12, 2261-2269
Abstract:none.
Location:reprints box 35
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Record ID:46/431


Date:1997
Subject:(46) Microphysics - Warm Cloud
Author:Cotton, W.R., Jiang, R.L. McAnelly
Title:Sensitivity of TOGA COARE cloud systems to different microphysical parameterization in RAMS
Publication:22nd Conference on Hurricanes, 19-23 May 1997, Fort Collins, CO.
Abstract:none.
Location:reprints box 35
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Record ID:46/432


Date:1997
Subject:(46) Microphysics - Warm Cloud
(60) Atmospheric Radiation
(12) Climate
Author:Feingold, G., R. Boers, B. Stevens, W.R. Cotton
Title:A Modeling Study of the Effect of Drizzle on Cloud Optical Depth and Susceptibilty
Publication:J .Geo. Res., 102, D12, 13527-13534
Abstract:none.
Location:reprints box 36
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Record ID:46/433


Date:1996
Subject:(46) Microphysics - Warm Cloud
(66) Stratiform/Stratocu Clouds
Author:Feingold, G., B. Stevens, W.R. Cotton, A.S. Frisch
Title:The relationship between drop in cloud residence time and drizzle production in numerically simulated stratocumulus clouds
Publication:J. Atmos. Sci., 53, 8, 1108-1122
Abstract:none
Location:reprints box 36
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Record ID:46/434


Date:1995
Subject:(46) Microphysics - Warm Cloud
(47) Miscellaneous
Author:Walko, Cotton, Meyers, Harrington
Title:New RAMS cloud microphysics parameterization. Part I: The single-moment scheme
Publication:Atmos. Res., 38, 29-62
Abstract:none
Location:reprints box 33
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Record ID:46/435


Date:1996
Subject:(46) Microphysics - Warm Cloud
Author:Feingold, G., R. Boers, B. Stevens, W.R. Cotton
Title:A modeling study of the effect of drizzle producation on cloud optical depth
Publication:12th International Confernce on Clouds and Precipitation, 19-23 August, Zurich Switzerland
Abstract:none
Location:reprints box 33
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Record ID:46/436


Date:1995
Subject:(46) Microphysics - Warm Cloud
Author:Cotton, Stevens, Nebuda
Title:A question of balance-simulating microphysical and dynamics
Publication:Conference on Cloud Physics, 15-20 January 1995, Dallas, TX.
Abstract:none.
Location:reprints box 32
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Record ID:46/437


Date:1995
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Meyers, Cotton
Title:Numerical investigation of two diverse precipitation events with the new two-moment microphysical scheme in RAMS
Publication:Conference on Cloud Physics, 15-20 January 1995, Dallas, TX.
Abstract:none.
Location:reprints box 32
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Record ID:46/438


Date:1990
Subject:(46) Microphysics - Warm Cloud
Author:Verlinde, Flatau, Cotton
Title:Analytical solutions to the collection growth equation: Comparision with approximate methods and application to cloud microphysics parameterization schemes
Publication:J. Atmos. Sci., 47, 2871-2880
Abstract:none.
Location:reprints box 27
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Record ID:46/439


Date:1967
Subject:(46) Microphysics - Warm Cloud
Author:Cotton, Gokhale
Title:Collision, coalescence, and breakup of large water drops in a vertical wind tunnel
Publication:J. Geo. Res., 72, 4041-4049
Abstract:none.
Location:reprints box 3
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Record ID:46/440


Date:12/15/2002
Subject:(46) Microphysics - Warm Cloud
Author:Vaillancourt, P.A., M.K. Yau, P. Bartello, W.W. Grabowski
Title:Microscopic approach to cloud droplet growth by condensation. Part II: Turbulence, clustering, and condensational growth
Publication:J. Atmos. Sci., 59, 3421-3435
Abstract:The goal of this work is to answer the question of whether nonuniformity in the spatial distribution of sizes and postions of cloud droplets and/or variable vertical velocity in a turbulent medium can contribute to the boardening of the droplet size distribution.
Location:8
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Record ID:46/441


Date:01/01/2002
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
(2) Aerosols & Aerosols (Scavenging)
Author:Hill, R.J.
Title:Scaling of acceleration in locally isotrpic turbulence
Publication:J. Fluid Mech., 452, 361-370
Abstract:The variances of the fluid-particle acceleration and of the pressure-gradient and viscous force are given.
Location:8
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Record ID:46/442


Date:01/01/2001
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
Author:Kostinski, A.B., R.A. Shaw
Title:Scale-dependent droplet clustering in turbulent clouds
Publication:J. Fluid Mech., 434, 389-398
Abstract:The current understanding of fundamental processes in atmospheric clouds, such as nucleation, droplet growth, and the onset of precipitation (collision-coalescence), is based on the assumption that droplets in undiluated clouds are distributed in space in a perfectly random manner,...
Location:8
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Record ID:46/443


Date:02/22/2001
Subject:(46) Microphysics - Warm Cloud
Author:LaPorta, A.,G.A. Voth, A.M. Crawford, J. Alexander, E. Bodenschatz
Title:Fluid particle accelerations in fully developed turbulence
Publication:Nature, 409, 1017-1019
Abstract:None
Location:8
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Record ID:46/444


Date:01/01/2000
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
Author:Malecot, Y., C. Auriault, H. Kahalerras, Y. Gagne, O. Chanal, B. Chabaud, B. Castaing
Title:A statistical estimator of turbulence intermittency in physical and numerical experiments
Publication:Eur. Phys. J. B., 16, 549-561
Abstract:The velocity increments statistic in variious turbulent flows is analysed through the hypotehesis that different scales are linked by a multiplicative process, of which multiplier is infintely divisible.
Location:8
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Record ID:46/445


Date:01/01/2001
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
Author:Shaw, R.A., S.P. Oncley
Title:Acceleration intermittency and enhanced collision kernels in turbulent clouds
Publication:Atmos. Res., 59-60, 77-87
Abstract:Scaling arguments suggest that in turbulent clouds, the droplet collision kernel is a fluctuating quantity with peak values at least an order of magnitude greater than the typically used kernel corresponding to droplet sedimentation in still air.
Location:8
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Record ID:46/446


Date:04/01/2002
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
Author:Shaw, R.A., A.B. Kostinski, M.L. Larsen
Title:Towards quantifying droplet clustering in clouds
Publication:Q.J.R. Meteorol. Soc., 128, 1043-1057
Abstract:Droplet positions in amtospheric clouds are randon but possibly correlated on some scales.
Location:8
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Record ID:46/447


Date:12/15/1999
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
Author:Vohl, O., S.K. Mitra, S.C. Wurzler, H.R. Pruppacher
Title:A wind tunnel study of the effects of turbulence on the growth of cloud drops by collision and coalescence
Publication:J. Atmos. Sci., 56, 4088-4099
Abstract:A Set of wind tunnel expeirments was carrier out to investigate the growth of single drops by collision coalescence with small droplets in laminar and turbulent flow.
Location:8
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Record ID:46/448


Date:05/01/1988
Subject:(46) Microphysics - Warm Cloud
(73) Turbulence
Author:Zhou, Y., A.S. Wexler, L.-P. Wang
Title:On the collision rate of small particles in isotropic turbulence. II. Finite inertia case
Publication:Phys. Fluids, 10, 1206-1216
Abstract:Numerical experiments have been performed to study the geometric collision rate of heave particles with finite intertia.
Location:8
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Record ID:46/449


Date:09/12/2002
Subject:(46) Microphysics - Warm Cloud
Author:Falkovich, G., A. Fouxon, M.G. Stepanov
Title:Acceleration of rain initiation by cloud turbulence
Publication:Nature, 419, 151-154
Abstract:Vapour condensation in cloud cores produces small droplets that are close to one another in size.
Location:8
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Record ID:46/450


Date:12/15/2003
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Korolev, A.V.
Title:Supersaturation of water vapor in clouds
Publication:J. Atmos. Sci., 60, 1957-2974.
Abstract:A theoretical framework is devleoped to estimate the supersaturation in liquid, ice, and mixed-phase clouds.
Location:8
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Record ID:46/451


Date:01/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Segal, Y., A. Khain, M. Pinsky, A. Sterkin
Title:Sensitivity of raindrop formation in ascending cloud parcels to cloud condensation nuclei and thermodynamic conditions
Publication:Q.J.R. Meteorol. Soc., 130, 561-581.
Abstract:This paper uses a 2000-bin spectral microphysics model to investigate the effects of aerosol particles on droplet spectrum evolution and warm rain formation in ascending cloud parcels under maritime, intermediate...
Location:8
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Record ID:46/452


Date:01/01/2000
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
(7) Atmospheric Chemistry
Author:Cloud and Aerosol Research Group
Title:Contributions from the Cloud and Aerosol Research Group
Publication:Collection of Reprints XXXVII.
Abstract:Numerous reprints from U of Washington from 2000-2003.
Location:8
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Record ID:46/453


Date:1/1/1982
Subject:(46) Microphysics - Warm Cloud
Author:Broadwell, Breidenthal
Title:A simple model of mixing and chemical reaction in a turbulent shear layer
Publication:J. Fluid Mech., 125, 397-410.
Abstract:None
Location:Citation Only, Full Text Not In Library
Record ID:46/454


Date:1/1/2001
Subject:(46) Microphysics - Warm Cloud
Author:Chaumat, L., J.L. Brenguier
Title:Droplet spectra broadening in cumulus clouds. Part II: Microscale droplet concentration heterogeneities
Publication:J. Atmos. Sci., 58, 6412-
Abstract:None
Location:Citation Only, Full Text Not In Library
Record ID:46/455


Date:01/01/1989
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Flatau, P.J., G.J. Tripoli, J. Verlinde, W.R. Cotton
Title:The CSU-RAMS cloud midrophysics module: general theory and code documentation
Publication:Atmospheric Science Paper No. 451, Colorado State University, Dept. of Atmospheric Science, Fort Collins, CO, 88 pp.
Abstract:The new bulk microphysics scheme which was developed for use in the Colorado State Univeristy Regional Atmospheric Mesoscale Model (RAMS) is described.
Location:8
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Record ID:46/456


Date:01/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Saleeby, S.M., and W.R. Cotton
Title:A large deoplet mode and prognostic number concentration of cloud droplets in the RAMS@CSU model. Part I: Module descriptions and supercell test simulations
Publication:J. Appl. Met., 41, 182-195.
Abstract:None
Location:reprints box 45
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Record ID:46/457


Date:11/27/2000
Subject:(46) Microphysics - Warm Cloud
(12) Climate
Author:Pincus, R., S.A. Klein
Title:Unresolved spatial varability and microphysical process rates in large-scale models
Publication:J. Geophys. Res., 105, D22, 27,059-27,065
Abstract:Prognostic cloud schemes in large-scale models are typically formulated in terms of grid-cell average values of cloud condensate concentration q, although varability in q at spatical scales smaller than the grid cell is known to exist.
Location:8
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Record ID:46/458


Date:11/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Gilmore, M.S., J.M. Straka, E.N. Rasmussen
Title:Precipitation uncertainty due to variations in precipitation particle parameters within a simple microphysics scheme
Publication:Mon. Wea. Rev., 132, 2610-2627
Abstract:This work reports on the sensitivity of accumulated precipitation to the microphyscial parameterization in simulations of deep convective storms ...
Location:8
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Record ID:46/459


Date:11/01/2003
Subject:(46) Microphysics - Warm Cloud
Author:Blyth, A.M., S.G. Lasher-Trapp, W.A. Cooper, C.A. Knight, and J. Latham
Title:The role of giant and ultragiant nuclei in the formation of early radar echoes in warm cumulus clouds
Publication:J. Atmos. Sci., 60, 2557-2572.
Abstract:Observations of the formation of the first radar echoes in small cumulus clouds are compared with results of a stochastic coalescence model run in the framework of a closed parcel.
Location:8
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Record ID:46/460


Date:01/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Chen, J.P., S.T. Liu
Title:Physically based two-moment bulkwater parameterization for warm-cloud microphysics
Publication:Q.J.R. Meteorol. Soc., 130, 51-78.
Abstract:A two-moment bulkwater parameterization scheme for warm-cloud microphysics is developed via statistical analyses of results from a detailed parcel model.
Location:8
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Record ID:46/461


Date:08/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Grabowski, W.W.
Title:An improved framework for superparameterization
Publication:J. Atmos. Sci., 61, 1940-1952.
Abstract:This paper discusses a large-scale modeling system with explicit representation of small-scale and mesoscale processes provided by a cloud-resolving model embedded in each column of a large-scale model, the super-parameterization.
Location:8
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Record ID:46/462


Date:02/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Larson, V.E.
Title:Prognostic equations for cloud fraction and liquid water, and their relation to filtered density functions
Publication:J. Atmos. Sci., 61, 338-351.
Abstract:This paper derives prognostic equations for cloud fraction and specific liquid water content.
Location:8
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Record ID:46/463


Date:07/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:Liu, Y., P.H. Daum
Title:Parameterization of the autoconversion process. Part I: Analytical formulation of the Kessler-type parameterizations
Publication:J. Atmos. Sci., 61, 1539-1548.
Abstract:Various commonly used Kessler-type parameterization of the autoconversion of cloud droplets to embryonic raindrops are theoretically derived from the scame formulism by applying the generalized mean value theorem for integrals to the general collection equation.
Location:8
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Record ID:46/464


Date:04/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:McFarquhar, G.M.
Title:A new representation of collision-induced breakup of raindrops and its implications for the shapes of raindrop size distribution
Publication:J. Atmos. Sci., 61, 777-794.
Abstract:Using results of laboratory experiments on collision-induced raindrop breakup, Low and List (LL) developed a parameterization describing the fragment size distribution (FSD) produced by collisions of raindrops.
Location:8
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Record ID:46/465


Date:01/01/2004
Subject:(46) Microphysics - Warm Cloud
Author:McFarquhar, G.M.
Title:The effect of raindrop clustering on collision-induced break-up of raindrops
Publication:Q.J.R. Meteorol. Soc., 130, 2169-2190.
Abstract:The impact of raindrop clustering on raindrop mean free paths, mean time between raindrop collisions, and raindrop collision rates is examined using prior observations of raindrop pair cross-corrleation functions and raindrop size distributions (RSDs).
Location:8
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Record ID:46/466


Date:02/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Lee, G.W., I. Zawadski
Title:Variability of Drop Size Distributions: Time-Scale Dependence of the Variability and Its Effects on Rain Estimation
Publication:J. Appl. Met., 44, 241-255
Abstract:None.
Location:Citation Only, Full Text Not In Library
Record ID:46/467


Date:04/01/2005
Subject:(46) Microphysics - Warm Cloud
(66) Stratiform/Stratocu Clouds
Author:Erlick, C., A. Khain, M. Pinsky and Y. Segal
Title:The effect of wind velocity fluctuations on drop spectrum broadening in stratocumulus clouds
Publication:Atmos. Res., 75, 14-45
Abstract:None
Location:Citation Only, Full Text Not In Library
Record ID:46/468


Date:01/01/2003
Subject:(46) Microphysics - Warm Cloud
Author:Hashimoto, A., T. Harimaya
Title:Characteristics of the variation of raindrop size distribution in Baiu season
Publication:J. Met. Soc. Japan, 81, 871-878.
Abstract:Observational data of RSD (Raindrop Size Distribution) in the Baiu season were analyzed by using Principal Component Analysis in order to detect objectively the characteristics of variation of RSD.
Location:8
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Record ID:46/469


Date:06/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Riemer, N., A.S. Wexler
Title:Droplets to drops by turbulent coagulation
Publication:J. Atmos. Sci., 62, 1962-1975
Abstract:This study addresses two central problems in cloud microphysics.
Location:8
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Record ID:46/470


Date:06/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Seifert, A., A. Khain, U. Blahak, K.D. Beheng
Title:Possible effects of collisional breakup on mixed-phase deep convection simulated by a spectral (bin) cloud model
Publication:J. Atmos. Sci., 62, 1917-1931
Abstract:The effects of the collisional breakup of raindrops are investigated using the Hebrew University Cloud Model (HUCM).
Location:8
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Record ID:46/471


Date:01/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Gao, S., X. Cui, Y. Zhou, X. Li
Title:Surface rainfall processes as simulated in a cloud-resolving model
Publication:J. Geophys. Res., 110, D10202, doi:10.1029/2004JD005467
Abstract:Surface rain rate can be simply formulated with the sum of moisture and cloud sources/sinks.
Location:8
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Record ID:46/472


Date:02/27/2001
Subject:(46) Microphysics - Warm Cloud
Author:Nenes, A., P.Y. Chuang, R.C. Flagan, J.H. Seinfeld
Title:A theoretical analysis of cloud condensation nucleus (CCN) instruments
Publication:J. Geophys. Res., 106, D4, 3449-3474.
Abstract:The behavior and performance of four cloud condensation nucleus instruments are theoretically analyzed.
Location:8
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Record ID:46/473


Date:01/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Roberts, G.C., A. Nenes
Title:A continuous-flow streamwise thermal-gradient CCN chamber for atmospheric measurements
Publication:Aerosol Sci. Tech., 39, 206-221.
Abstract:We have addressed the need for improved measurements of cloud condensation nuclei (CCN) by developing a continuous-flow instruments that provides in situ measurements of CCN.
Location:4
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Record ID:46/474


Date:08/01/2000
Subject:(46) Microphysics - Warm Cloud
Author:Chuang, P.Y., A. Nenes, J.N. Smith, R.C. Flanagan, J.H. Seinfeld
Title:Design of a CCN instrument for airborne measurement
Publication:J. Atmos. Oceanic Tech., 17, 1005-1019
Abstract:A new instrument for measuring cloud condensation nuclei (CCN) on board small aircraft is described.
Location:3
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Record ID:46/475


Date:07/01/2005
Subject:(46) Microphysics - Warm Cloud
(60) Atmospheric Radiation
Author:Hartman. C.M., J.Y. Harrington
Title:Radiative impacts on the growth of drops within simulated marine stratocumulus. Part II: Solar zenity angle variations.
Publication:J. Atmos. Sci., 62, 2339-2351
Abstract:The effects of solar heating at a variety of solar zenith angles (theta_0) on the vapor depositional growth of cloud drops, and hence the potential for collection enhancement, is investigated.
Location:1
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Record ID:46/476


Date:07/01/2005
Subject:(46) Microphysics - Warm Cloud
(60) Atmospheric Radiation
Author:Hartman, C.M., J.Y. Harrington
Title:Radiative impacts on the growth of drops within simulated marine stratocumulus. Part I: Maximum solar heating
Publication:J. Atmos. Sci., 62, 2323-2338.
Abstract:The effects of solar heating and infrared cooling on the vapor depositional growth of cloud drops, and hence the potential for collection ehancement, is invetigated.
Location:1
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Record ID:46/477


Date:07/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Wang, L.P., O. Ayala, S.E. Kasprzak, W.W. Grabowski
Title:Theoretical fomrulation of collision rate and collision efficiency of hydrodynamically interacting cloud droplets in turbulent atmosphere
Publication:J. Atmos. Sci., 62, 2433-2450.
Abstract:A methodology for conducting direct numerical simulation (DNSs) of hydrodynamically interacting droplets in the context of cloud microphysics has been developed and used to validate a new kinematic formulation capable of describing the collision rate and collision efficiency of cloud droplets in turbulent air.
Location:0
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Record ID:46/478


Date:07/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Franklin, C.N., P.A. Vaillancourt, M.K. Yau, P. Bartello
Title:Collision rates of cloud droplets in trubulent flow
Publication:J. Atmos. Sci., 62, 2451-2466.
Abstract:Direct numerical simulations of an evolving turbulent flow field have been performed to explore how turbulence affects the motion and collisions of cloud droplets.
Location:3
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Record ID:46/479


Date:08/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Wood, R., P.N. Blossey
Title:Comments on Parameterization of the Autoconversion Process. Part I: Analytical Formulation of the Kessler-Type Parameterizations
Publication:J. Atmos. Sci., 62, 3003-3008.
Abstract:None.
Location:8
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Record ID:46/480


Date:07/01/2006
Subject:(46) Microphysics - Warm Cloud
(45) Microphysics - Ice Phase
Author:Morrison, H., J.O. Pinto
Title:Intercomparison of bulk cloud microphysics shemes in mesoscale simulations of springtime Arctic mixed-phase stratiform clouds
Publication:Mon. Wea. Rev., 134, 1880-1900
Abstract:A persistent weakly forced, horizontally extensive mixed-phase boundary layer cloud observed on 4-5 May 1998 during the Surface Hate Budget of the Arctic Ocean (SHEBA)/First International Satellite Cloud Climatology Project (ISCCP) Regional Experiment-Arctic Clouds Experiement (FIRE-ACE)...
Location:2
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Record ID:46/481


Date:07/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Knight, C.A.
Title:Very early formation of big. liquid drops revealed by Z_DR in continental cumulus
Publication:J. Atmos. Sci., 63, 1939-1953.
Abstract:Examination of the early radar echo histories of several vigorous, cumulus clouds in northeast Colorado and northwest Kansas, with sensitive, dual-polarization radar, reveals the formation of millimeter-sized water drops at about the same time that the conventional, first precipitation echo (from ice) forms aloft.
Location:3
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Record ID:46/482


Date:01/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Simmel, M., S. Wurzler
Title:Condensation and activation in sectional cloud microphysical models
Publication:Atmos. Res., 80, 218-236.
Abstract:Based on the Linear Discrete Method, new spectral cloud microphysical models with one and two demsnional fixed grids are presented.
Location:4
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Record ID:46/483


Date:09/01/2006
Subject:(46) Microphysics - Warm Cloud
(23) Cumulus Parameterization
Author:Cohen, C., E.W. McCaul, Jr.
Title:The sensitivity of simulated convective storms to variations in prescribed single-moment microphysics parameters that describe particle distributions, sizes, and numbers
Publication:Mon. Wea. Rev., 134, 2547-2565.
Abstract:The sensitivity of cloud-scale simulations of deep convection to variations in prescribed micropysic paramters is studied using the single-moment scheme in the Regional Atmospheric Modeling System (RAMS) model.
Location:3
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Record ID:46/484


Date:04/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Falkovich, G., M.G. Saepanov, M. Vucelja
Title:Rain initiation time in turbulent warm clouds
Publication:J. Appl. Met. Climatol., 45, 591-599.
Abstract:A mean field model is presented that describes droplet growth resulting from condensation and collisions and droplet loss resulting from fallout.
Location:4
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Record ID:46/485


Date:08/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Pinksy, M.B., A.P. Khain, B. Grits
Title:Collisions of small drops in a turbulent flow. Part III: Relative droplet fluxes and swept volumes
Publication:J. Atmos. Sci., 63, 2123-2139.
Abstract:Swept volumes of cloud droplets with radii below 20 micrometers are calculated under conditions typical of atmospheric cloud turbulence characterized by enormous values of Reynolds numbers, high turbulent intermittency, and ...
Location:8
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Record ID:46/486


Date:01/01/2002
Subject:(46) Microphysics - Warm Cloud
Author:Pinsky, M.B., A.P. Khain
Title:Effects of in-cloud nucleation and turbulence on droplet spectraum formation in cumulus clouds
Publication:Q.J.R. Meteorol. Soc., 128, 501-533.
Abstract:Drop spectrum evolution is investigated using a moving mass grid microphysical cloud parcel model containing 2000 mass bins and allowing turbulent effect on droplet collisions.
Location:3
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Record ID:46/487


Date:01/01/2006
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Prodi, F., G. Santachiara, S. Travaini, A. Vederinkov, F. Dubois, C. Minetti, J.C. Legros
Title:Measurements of phoretic velocities of aerosol particles in microgravity conditions
Publication:Atmos. Res., 82, 183-189.
Abstract:Measurements of thermo- and diffusio-phoretic velocities of aerosol particles (carnauba wax, parraffin and sodium chlorida) were performed in microgravity conditions (Drop Tower facility, in Bremen, and Parabolic Flights, in Bordeaux).
Location:2
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Record ID:46/488


Date:01/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Wood, R.
Title:Rate of loss of cloud droplets by coalescence in warm clouds
Publication:J. Geophys. Res., 111, D21205, doi:10.1029/2006JD007553.
Abstract:An approximate analytical expression for the rate of loss of cloud droplets by coalescence in warm clouds is derived from the stochastic collection equation (SCE).
Location:0
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Record ID:46/489


Date:03/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Liu, Y., P.H. Daum, R. McGraw
Title:Parameterization of the autoconversion process. Part II: Generalization of Sundqvist-type parameterizations
Publication:J. Atmos. Sci., 63, 1103-1109.
Abstract:Existing Sundqvist-type parameterizations, which only consider dependence of the autoconversion rate on cloud liquid water content, are generalized to explicitly account for the droplet concentration and relative dispersion of the cloud droplet size distribution as well.
Location:4
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Record ID:46/490


Date:01/01/2006
Subject:(46) Microphysics - Warm Cloud
(79) Cloud Resolving Modeling
(2) Aerosols & Aerosols (Scavenging)
Author:Seifert, A., A. Khain, A. Pokrovsky, K.D. Beheng
Title:A comparison of spectral bin and two-moment bluk mixed-phase cloud microphysics
Publication:Atmos. Res., 80, 46-66.
Abstract:This numerical study investigates the representation of cloud microphysical processes in cloud resolving models and the effects of different characteristics of cloud condensation nuclei (CCN) on the evoluation of deep convective storms.
Location:4
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Record ID:46/491


Date:03/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Wang, L.P., C.N. Franklin, O. Ayala, W.W. Grabowski
Title:Probability distributions of angle of approach and relative velocity for colliding droplets in a turbulent flow
Publication:J. Atmos. Sci., 63, 881-900.
Abstract:Prediction of the effect of air turbulence on statistics relevant to a collision-coalescence process represents a key challenge in the modeling of cloud microphysics.
Location:8
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Record ID:46/492


Date:12/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Andrejczuk, Miroslaw, Wojciech W. Grabowski, Szymon P. Malinowski, Piotr K. Smolarkiewicz
Title:Numerical Simulation of Cloud–Clear Air Interfacial Mixing: Effects on Cloud Microphysics
Publication:J. Atmos. Sci., 63, 3204-3225.
Abstract:This paper extends the previously published numerical study of Andrejczuk et al. on microscale cloud–clear air mixing. Herein, the primary interest is on microphysical transformations.
Location:http://ams.allenpress.com/perlserv/?request=get-toc&issn=1520-0469&volume=63&issue=12
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Record ID:46/493


Date:12/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Davis, E.J.
Title:A history and state-of-the-art of accommodation coefficients
Publication:Atmos. Res., 82, 561-578.
Abstract:This paper reviews theory and measurements of transport processes between small particles and the surrounding gas. Evaporation and condensation coefficients and gas uptake coefficients are of particular interest.
Location:http://www.sciencedirect.com/science?_ob=PublicationURL&_cdi=5889&_pubType=J&_auth=y&_acct=C000053133&_version=1&_urlVersion=0&_userid=1493582&md5=ea28343ccb8fbaf801011deb0049662d&jchunk=82#82
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Record ID:46/494


Date:12/01/2006
Subject:(46) Microphysics - Warm Cloud
Author:Reade, Luke, S.G. Jennings and Gobnait McSweeney
Title:Cloud condensation nuclei measurements at Mace Head, Ireland, over the period 1994–2002
Publication:Atmos. Res., 82, 610-621.
Abstract:Analyses of cloud condensation nuclei (CCN) number concentrations (cm− 3) measured at the Mace Head Atmospheric Research Station, near Carna, County Galway, Ireland, using a DH Associates Model M1 static thermal diffusion cloud chamber over the period from March 1994 to September 2002 are presented in this work.
Location:http://www.sciencedirect.com/science?_ob=PublicationURL&_cdi=5889&_pubType=J&_auth=y&_acct=C000053133&_version=1&_urlVersion=0&_userid=1493582&md5=ea28343ccb8fbaf801011deb0049662d&jchunk=82#82
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Record ID:46/495


Date:01/01/1958
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Squires, P.
Title:The microstructure and colloidal stability of warm clouds. Part II - The causes of the variations in microstructure
Publication:Tellus, X, 262-271.
Abstract:An attempt is made to explore the causes of the differences in microstructure between the Hawaiian orographic cloud, maritime cumuli and continental cumuli, observations on which were dicussed in Part I of this series.
Location:8
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Record ID:46/496


Date:01/01/1958
Subject:(46) Microphysics - Warm Cloud
(2) Aerosols & Aerosols (Scavenging)
Author:Squires, P.
Title:The microstructure and colloidal stability of warm clouds. Part I - The relation between structure and stability
Publication:Tellus, X, 256-261.
Abstract:Observations on the droplet spectra of different kinds of warm clouds have shown that systematic differences in microstructure exist between the various cloud types.
Location:8
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Record ID:46/497


Date:07/01/2007
Subject:(46) Microphysics - Warm Cloud
Author:M. B. Pinsky, A. P. Khain, and M. Shapiro
Title:Collisions of Cloud Droplets in a Turbulent Flow. Part IV: Droplet Hydrodynamic Interaction
Publication:J. Atmos. Sci., 64, 2462-2482.
Abstract:The paper presents a computationally accurate and efficient method for calculation of cloud droplets’ collision efficiency in a turbulent flow with the properties typical of atmospheric clouds.
Location:http://ams.allenpress.com/perlserv/?request=get-toc&issn=1520-0469&volume=64&issue=7
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Record ID:46/498


Date:08/01/2007
Subject:(46) Microphysics - Warm Cloud
Author:Hugh Morrison and Wojciech W. Grabowski
Title:Comparison of Bulk and Bin Warm-Rain Microphysics Models Using a Kinematic Framework
Publication:J. Atmos. Sci., 64, 2839-2861.
Abstract:This paper discusses the development and testing of a bulk warm-rain microphysics model that is capable of addressing the impact of atmospheric aerosols on ice-free clouds.
Location:http://ams.allenpress.com/perlserv/?request=get-toc&issn=1520-0469&volume=64&issue=8
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Record ID:46/499


Date:08/01/2007
Subject:(46) Microphysics - Warm Cloud
(79) Cloud Resolving Modeling
Author:Xiaoqing Wu, Xin-Zhong Liang, and Sunwook Park
Title:Cloud-Resolving Model Simulations over the ARM SGP
Publication:Mon. Wea. Rev., 135, 2841-2853.
Abstract:This study aims to combine the cloud-resolving model (CRM) simulations with the Department of Energy’s Atmospheric Radiation Measurement Program (ARM) observations to provide long-term comprehensive and physically consistent data that facilitate quantifying the effects of subgrid cloud–radiation interactions and ultimately to develop physically based parameterization of these interactions in general circulation models.
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Record ID:46/500


Date:08/01/2007
Subject:(46) Microphysics - Warm Cloud
Author:Changhai Liu and Mitchell W. Moncrieff
Title:Sensitivity of Cloud-Resolving Simulations of Warm-Season Convection to Cloud Microphysics Parameterizations
Publication:Mon. Wea. Rev., 135, 2854-2868.
Abstract:This paper investigates the effects of cloud microphysics parameterizations on simulations of warm-season precipitation at convection-permitting grid spacing.
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Record ID:46/501


Date:08/29/2007
Subject:(46) Microphysics - Warm Cloud
Author:Liu, Yangang; Daum, Peter H.; McGraw, Robert L.; Miller, Mark A.; Niu, Shengjie
Title:Theoretical expression for the autoconversion rate of the cloud droplet number concentration
Publication:Geophys. Res. Lett., Vol. 34, No. 16, L16821, doi:10.1029/2007GL030389
Abstract:Accurate parameterization of the autoconversion rate of the cloud droplet concentration (number autoconversion rate in cm−3 s−1) is critical for evaluating aerosol indirect effects using climate models; however, existing parameterizations are empirical at best.
Location:http://www.agu.org/pubs/current/gl/?month=August
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Record ID:46/502


Date:05/01/2007
Subject:(46) Microphysics - Warm Cloud
Author:Cohen, Charles, Eugene W. McCaul Jr.
Title:Further Results on the Sensitivity of Simulated Storm Precipitation Efficiency to Environmental Temperature
Publication:Monthly Weather Review, 135, 1671-1684.
Abstract: method is devised for diagnosing the condensation rate in simulations using the Regional Atmospheric Modeling System (RAMS) model, where ice-liquid water potential temperature is a prognostic variable and an iterative procedure must be used to diagnose the temperature and water vapor mixing ratio from ice-liquid water potential temperature.
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Record ID:46/503


Date:04/01/2007
Subject:(46) Microphysics - Warm Cloud
Author:Riemer, N., A. S. Wexler, and K. Diehl
Title:Droplet growth by gravitational coagulation enhanced by turbulence: Comparison of theory and measurements,
Publication:J. Geophys. Res., 112, D07204, doi:10.1029/2006JD007702
Abstract:While it is well known that cloud droplets grow in an inherently turbulent environment, the role of turbulence is only now being elucidated. To shed light on this issue, we compare published measurements of droplet growth by collision in turbulent flow with numerical simulations.
Location:http://www.agu.org/contents/journals/ViewJournalContents.do;jsessionid=A62AE7C64BD736A2FBD7020A9CE9D38F?journalCode=JD&viewBy=date&year=2007&month=Apr&sortBy=pubDate
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Record ID:46/504


Date:04/01/2007
Subject:(46) Microphysics - Warm Cloud
Author:Riemer, N., A. S. Wexler, and K. Diehl
Title:Droplet growth by gravitational coagulation enhanced by turbulence: Comparison of theory and measurements,
Publication:J. Geophys. Res., 112, D07204, doi:10.1029/2006JD007702
Abstract:While it is well known that cloud droplets grow in an inherently turbulent environment, the role of turbulence is only now being elucidated. To shed light on this issue, we compare published measurements of droplet growth by collision in turbulent flow with numerical simulations.
Location:http://www.agu.org/contents/journals/ViewJournalContents.do;jsessionid=A62AE7C64BD736A2FBD7020A9CE9D38F?journalCode=JD&viewBy=date&year=2007&month=Apr&sortBy=pubDate
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Record ID:46/505


Date:01/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Gaudet, B.J., J.M. Schmidt
Title:Assessment of hydrometeor collection rates from exact and approximate equations. Part I: A new approximate scheme
Publication:J. Atmos. Sci., 62, 143-159.
Abstract:The collision equation is analyzed for the case of two spherical hydrometeors with collection efficiency unity and exponential size distributions.
Location:8
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Record ID:46/506


Date:12/01/2005
Subject:(46) Microphysics - Warm Cloud
Author:Laroche, S., W. Szyrmer, I. Zawadski
Title:A microphysical bulk formulation based on scaling normatization of the particle size distribution. Part II: Data assimilation into physical processes
Publication:J. Atmos. Sci., 62, 4222-4237.
Abstract:Microphysical schemes based on the scaling normalization of the particle size distribution (PSD) are case into a variational data assimilation method to assess their ability...
Location:8
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Record ID:46/507


Date:02/01/2008
Subject:(46) Microphysics - Warm Cloud
(66) Stratiform/Stratocu Clouds
Author:Khain, A., M. Pinsky, L. Magaritz, O. Krasnov, and H.W.J. Russchenberg
Title:Combined observational and model investigations of the Z-LWC relationship in stratocumulus clouds
Publication:J. Appl. Met. Clim., 47, 591-606.
Abstract:In situ measurements indicate the complexity and nonunique character of radar reflectively-liquid water content (Z-LWC) relationships in stratocumuls and cumulus clouds.
Location:2
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Record ID:46/508

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