Physics
Scientific paper
Oct 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29s..34k&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 19, pp. 34-1, CiteID 1928, DOI 10.1029/2002GL015403
Physics
6
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Atmospheric Composition And Structure: Pollution-Urban And Regional (0305)
Scientific paper
Aerosol absorption of sunlight, in particular by black carbon - soot and dark organic material produced from incomplete combustion of fossil fuel and from vegetation fires, is emerging as a key component of climate forcing. However, global characterization of black carbon emissions, distribution and absorption of sunlight cannot be determined within a factor of 5. Here we propose that the oceanic sunglint can be used as a bright background against which aerosol absorption can be measured from space. The method can map global ocean glint every 4-10 days and determine the distribution of aerosol absorption optical thickness with an error of +/-25% for aerosol optical thickness of 0.2 to 0.4. 18 % of the ocean observations are for this range of optical thicknesses. The monthly average aerosol absorption is estimated to have an error of +/-12% and uncertainty in the single scattering albedo of +/-0.02. We outline a satellite design to perform the measurements.
Kaufman Yoram J.
Martins José Vanderlei
Remer Lorraine A.
Schoeberl Mark R.
Yamasoe M. A.
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