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A New Look at Homogeneous Ice Nucleation in Supercooled Water Drops
Publisher: American Meteorological Society
Abstract: The classical theory for homogeneous ice nucleation in supercooled water is investigated in the light of recent data published in various physico-chemical journal on the physical properties of supercooled water and in the ...
A Wind Tunnel and Theoretical Study of the Melting Behavior of Atmospheric Ice Particles. I: A Wind Tunnel Study of Frozen Drops of Radius < 500 μm
Publisher: American Meteorological Society
Abstract: A study has been made on the melting behavior of frozen drops suspended freely at terminal velocity in the UCLA Cloud Tunnel. The relative humidity of the air ranged between 25 and 95%. The warming rates of the tunnel air ...
A Wind Tunnel Investigation of the Rate of Evaporation of Large Water Drops Falling at Terminal Velocity in Air
Publisher: American Meteorological Society
Abstract: An experimental study of the effect of ventilation on the rate of evaporation of millimeter sized water drops failing at terminal velocity in air has been carried out in a wind tunnel where drops were suspended freely in ...
A Theoretical Study of the Wet Removal of Atmospheric Pollutants. Part III: The Uptake, Redistribution, and Deposition of (NH4)2SO4 Particles by a Convective Cloud Using a Two-Dimensional Cloud Dynamics Model
Publisher: American Meteorological Society
Abstract: Our model for the scavenging of aerosol particles has been coupled with the two-dimensional form of the convective cloud model of Clark and Collaborators. The combined model was then used to simulate a convective warm cloud ...
A Numerical Determination of the Evolution of Cloud Drop Spectra due to Condensation on Natural Aerosol Particles
Publisher: American Meteorological Society
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. Particles of four types of aerosols ...
A Determination of the Terminal Velocity and Drag of Small Water Drops by Means of a Wind Tunnel
Publisher: American Meteorological Society
Abstract: Measurements of the drag on small water drops falling in water-saturated air at terminal velocity were carried out in a wind tunnel for Reynolds numbers R between 0.2 and 200. The fractional deviation (D/Ds) ? 1 of the ...
The Effect of Vertical Turbulent Fluctuations in the Atmosphere on the Collection of Aerosol Particles by Cloud Drops
Publisher: American Meteorological Society
Abstract: A one-dimensional model of the effect of the vertical component of atmospheric turbulent fluctuations on the collection of micron-size aerosol particles by cloud drops is presented. The model includes simultaneous effects ...
A Numerical Investigation of Collision Efficiencies of Simple Ice Plates Colliding With Supercooled Water Drops
Publisher: American Meteorological Society
Abstract: The hydrodynamic interaction between simple ice plates, idealized as oblate spheroids of axis ratio 0.05, and water drops, assumed to be spherical, was numerically investigated for atmospheric conditions of ?10C and 700 ...