Mathematics – Logic
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3504810p&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 4, CiteID L04810
Mathematics
Logic
10
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Oceanography: Biological And Chemical: Aerosols (0305, 4906), Atmospheric Processes: Radiative Processes, Atmospheric Processes: Remote Sensing
Scientific paper
Using one year (2000-2001) of merged Multiangle Imaging SpectroRadiometer (MISR), Moderate Resolution Imaging SpectroRadiometer (MODIS) and Clouds and the Earth's Radiant Energy System (CERES) data sets from NASA's Terra satellite, we estimate the top of atmosphere cloud-free direct radiative effect (DRE) of aerosols over global land areas. The global mean shortwave DRE is -5.1 +/- 1.1 Wm-2 although substantial regional variability in DRE over land exists due to differences in aerosol properties and land cover types. This value is consistent with those reported in the literature although this is the first observational estimate of the global DRE over land using satellite data alone. Future studies need to separate the anthropogenic component of aerosols from satellite data to examine aerosol climate forcing over global scales.
Christopher Sundar A.
Gupta Pawan
Patadia Falguni
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