AMS Forum: Climate Change Manifested by Changes in Weather


How 3D science can help to correctly interpret satellite data on aerosol-cloud interaction

Alexander Marshak, NASA/GSFC, Greenbelt, MD; and G. Wen, T. Varnai, and R. F. Cahalan

Clouds are the most strikingly complex 3D objects in the Earth's atmosphere. One consequence is the radiative properties of each cloudy pixel are effected by its neighbors. Current operational retrievals of cloud and aerosol properties treat each pixel independently of its neighbors, assuming no radiative interactions between them. We quantify the influence of 3D radiative effects on MODIS-derived cloud optical thickness, particle size, and aerosol optical thickness. 

Applying 3D radiative transfer calculations, we will combine multi-spectral MODIS information on spatial variability with MISR multi-angle information and ASTER sub-pixel information.


Session 6, Impacts of Aerosols on Weather and Climate
Thursday, 18 January 2007, 1:30 PM-5:45 PM, 214D

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