HR: 16:45h
AN: A14B-04 INVITED    [Abstracts]
TI: Response of a Vapor Field to Injection of Aerosols: Characteristic Time Scale
AU: * Kostinski, A B
EM: alex_kostinski@mtu.edu
AF: Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, United States
AB: What is a good measure of "fast" or "slow" when discussing the impact of aerosol injections on the development of a growing cloud? I suggest simple criteria for answering this question, based on a combination of global and local water vapor balance approximations. This results in a compact expression for a characteristic time scale. While approximate, such relaxation time is simple to calculate and has a transparent physical meaning. Several illustrations using realistic scenarios for aerosol loading and updraft speed are discussed.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting