HR: 1330h
AN: A32B-0139    [PDF]
TI: Chemistry and Microphysics of Lower Stratospheric Aerosols Determined by Satellite Remote Sensing
AU: Zasetsky, A Y
EM: azaset@sciborg.uwaterloo.ca
AF: University of Waterloo, Department of Chemistry, Waterloo, ON N2L 3G1 Canada
AU: Khalizov, A
EM: khalizov@sciborg.uwaterloo.ca
AF: University of Waterloo, Department of Chemistry, Waterloo, ON N2L 3G1 Canada
AU: * Sloan, J
EM: sloanj@UWaterloo.CA
AF: University of Waterloo, Department of Chemistry, Waterloo, ON N2L 3G1 Canada
AB: Observations of broadband Infrared satellites such as ILAS-II (Ministry of the Environment, Japan, launched 14 December 2002) and SciSat-1 (Canadian Space Agency, launched 12 August 2003) can provide details of the chemical composition and particle size of atmospheric aerosols by direct inversion without recourse to models. During the past decade, we have developed mathematical methods to achieve this inversion by working with FTIR observations of model atmospheric aerosols in cryogenic flowtubes. More recently, we have converted these to operational algorithms for use in the above missions. In this presentation, we will briefly outline these procedures and illustrate their capabilities using laboratory data. These laboratory results show that the chemical compositions, phases and sizes of ensembles of particles can be obtained simultaneously using these procedures. We will also report chemical and microphysical properties of lower stratospheric clouds and aerosols derived by applying these procedures to observations from space.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0320 Cloud physics and chemistry
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0360 Transmission and scattering of radiation
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting