HR: 08:20h
AN: A41E-02 INVITED     [Abstracts]
TI: Laboratory Studies of the Influence of Physicochemical Properties of Mineral Dust Aerosol on Climate
AU: * Grassian, V H
EM: vicki-grassian@uiowa.edu
AF: Department of Chemistry, University of Iowa, Departmetn of Chemistry, Iowa City, IA 52242
AB: Mineral dust aerosol can impact climate through scattering and absorption of solar radiation, nucleating clouds and ocean CO₂ production through Fe-containing mineral dust deposition. Atmospheric processing or aging of mineral dust through heterogeneous chemical reactions will alter how these particles impact climate. Laboratory studies can provide a framework in which to understand impact of mineral dust on global processes and how this may change upon atmospheric aging. Some recent measurements on the optical properties, hygroscopicity and CCN activity of mineral dust and reacted mineral dust will be discussed.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005