Accession Number : AD0703172

Title :   ON THE PROBLEM OF THE SETTLING OF AN ARTIFICIAL AEROSOL CLOUD IN THE ATMOSPHERE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Miroshkina,A. N. ; Petrova,G. M.

Report Date : 03 NOV 1969

Pagination or Media Count : 17

Abstract : An analysis is made of data obtained to determine the rate of settling, the movement along trajectories and the positions, extent, and distance from the source of surface concentration maxima of artificial aerosol clouds. The aerosol used consisted of luminescent particles of polymethylmethacryllate released into the atmosphere at various speeds and in various weather conditions. Analysis of these data indicates the following: for finely dispersed particles, introduced into the atmosphere in small concentrations or under experimental conditions in which the initial interaction of the particles with the atmosphere ceases almost immediately, the surface fallout concentration is maximum at a distance from the source and depends on the vertical coefficient of particle dispersion, when the initial volume of particles discharged is large, especially those dispersed from aircraft into an unstably stratified atmosphere, the surface concentration maximum is much closer. If the aerosol cloud settles fast enough, a second surface concentration maximum does not occur. (Author)

Descriptors :   (*AIR POLLUTION, AEROSOLS), (*AEROSOLS, SCATTERING), INTERACTIONS, LUMINESCENCE, ATMOSPHERES, ACRYLIC RESINS, USSR

Subject Categories : Physical Chemistry
      Air Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE