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RISIn-Cloud Scavenging by Thermophoresis, Diffusiophoresis, and Brownian Diffusion
Publisher: American Meteorological Society
Abstract: The role of phoretic forces in providing an in-cloud scavenging mechanism is examined for the case of an evaporating cloud drop. A formula is presented which describes the coupled effects of diffusion and thermo- and ...
A Comparison between a Steady-State Downdraft Model and Observations Behind Squall Lines
Publisher: American Meteorological Society
Abstract: A simple parcel model has been used to examine the possibility that observed profiles of ?e following the passage of a squall line are produced by air originating in middle-level clouds and descending in steady rain. The ...
Numerical Simulation of a Widely Used Cloud Nucleus Counter
Publisher: American Meteorological Society
Abstract: The performance of the conventional horizontal plate thermal diffusion chamber as a cloud nucleus counter was studied. Numerical calculations were performed in order to follow the simultaneous drop growth and sedimentation ...
Measurement of Growth Rate to Determine Condensation Coefficients for Water Drops Grown on Natural Cloud Nuclei
Publisher: American Meteorological Society
Abstract: Growth rate measurements were made for water drops grown on nuclei in atmospheric air samples taken in Rolla, Missouri. Rolla, having a population of 15,000 and very little industry, is relatively free of urban pollutants. ...
Condensation Coefficient Measurement for Water in the UMR Cloud Simulation Chamber
Publisher: American Meteorological Society
Abstract: A systematic series of condensation coefficient measurements of water have been made using the University of Missouri?Rolla cooled-wall expansion chamber which simulates the thermodynamics of cloud. This coefficient is ...