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Rain scavenging studies. Progress report No. 11

By A.N. Dingle

Abstract

The modeling of convective storm scavenging processes is going forward on two distinct fronts. The first of these relates to the microphysical processes, particularly to the study of their response to micro-dynamical components of the convective circulation. It is found that the droplet size spectra generated are responsive to variations of vertical velocity due to turbulence within the cloud and to humidity variations due to entrainment processes. Both sets of variations give responses that differ for different amplitudes and frequencies, i.e., rapid, small-amplitude eddies appear to enhance small-droplet development, whereas slow, large-amplitude oscillations tend to enhance large-droplet development. An allied study of the assumptions used in the microphysical equations is also being made. The second modeling effort is addressed to the problem of three-dimensional representation of convective dynamics. Equations are presented, and some of the problems under attack are discussed. (auth

Topics: *Radioactive Aerosols-- Scavenging, Clouds, N44310* --Environmental & Earth Sciences--Radioactivity Monitoring & Transport--Atmosphere, 500300* --Environmental Sciences, Atmospheric--Radioactive Materials Monitoring & Transport, Humidity, Rain, *Storms-- Mathematical Models
Publisher: Michigan Univ., Ann Arbor (USA). Dept. of Atmospheric and Oceanic Science
Year: 1975
DOI identifier: 10.2172/4121006
OAI identifier:
Provided by: UNT Digital Library
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