HR: 17:15h
AN: A24B-05    [Abstracts]
TI: Aerosol Absorption measurements from OMI: Preliminary results
AU: * Torres, O
EM: torres@qhearts.gsfc.nasa.gov
AF: JCET, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, md 21250 United States
AU: Bhartia, P
EM: bhartia@carioca.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 916 NASA Goddard Space Flight Center, Greenbelt, md 20701 United States
AB: Aerosol measurements by the Ozone Monitoring Instrument (OMI) on the AURA spacecraft will contribute new information on aerosol properties as measurements of near UV and visible backscattered solar radiation are used to quantify aerosol absorption by retrieving both the extinction optical depth and the single scattering albedo of the atmospheric aerosol load. The OMI aerosol algorithm physical basis is the strong sensitivity to particle absorption in the near UV spectral region as demonstrated by the widely known Total Ozone Mapping Spectrometer (TOMS) Aerosol Index product. Because of the extended spectral coverage of the OMI sensor as well as the finer spatial resolution, the OMI aerosol product is an improvement over its TOMS predecessor. In addition to the clear separation of absorbing aerosols (dust, smoke) from non-absorbing particles in the near UV, the combined use of visible and near UV observations in the OMI algorithm allows to differentiate desert dust aerosols from carbonaceous particles. A brief description of the OMI aerosol retrieval scheme will be presented followed by a discussion of OMI aerosol retrievals preliminary results.
DE: 1610 Atmosphere (0315, 0325)
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0368 Troposphere--constituent transport and chemistry
DE: 0933 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting