HR: 1330h
AN: A12B-0085    [PDF]
TI: Aerosol Direct Radiative Forcing - Estimates from a Global Aerosol Analysis with MODIS Assimilation
AU: * Fillmore, D W
EM: fillmore@ucar.edu
AF: National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 United States
AU: Collins, W D
EM: wcollins@ucar.edu
AF: National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 United States
AU: Conley, A J
EM: aconley@ucar.edu
AF: National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 United States
AB: New estimates of the direct shortwave radiative forcing of aerosols are based on a three year (March 2000 - February 2003) MODIS (Moderate Resolution Imaging Spectroradiometer) aerosol analysis. The analysis assimilates MODIS observations of aerosol optical depth with the chemical transport model MATCH (Model of Atmospheric Transport and Chemistry). The clear-sky and cloudy-sky radiative forcings of sulfate, sea-salt, organic and black carbon and dust aerosol are calculated within the NCAR CAM (Community Atmosphere Model) using the MODIS aerosol analysis and MODIS measured visible and near-infrared surface albedos. The top-of-atmosphere shortwave monthly-mean fluxes are compared to the corresponding CERES (Clouds and the Earth's Radiant Energy System) measured fluxes for the same time period.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting