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Detailed Reference Information |
Christopher, S.A., Zhang, J., Kaufman, Y.J. and Remer, L.A. (2006). Satellite-based assessment of top of atmosphere anthropogenic aerosol radiative forcing over cloud-free oceans. Geophysical Research Letters 33: doi: 10.1029/2005GL025535. issn: 0094-8276. |
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Most assessments of the direct climate forcing (DCF) of anthropogenic aerosols are from numerical simulations. However, recent advances in remote sensing techniques allow the separation of fine mode aerosols (anthropogenic aerosol is mostly fine aerosol) from coarse mode aerosols (largely marine and dust, which are mostly natural) from satellite data such as the Moderate Resolution Imaging SpectroRadiometer (MODIS). Here, by combining MODIS narrowband measurements with broadband radiative flux data sets from the Clouds and the Earth's Radiant Energy System (CERES), we provide a measurement-based assessment of the global direct climate forcing (DCF) of anthropogenic aerosols at the top of atmosphere (TOA) only for cloud free oceans. The mean TOA DCF of anthropogenic aerosols over cloud-free oceans <60N--60S> is -1.4 ¿ 0.9 Wm-2, which is in excellent agreement (mean value of -1.4 Wm-2) with a recent observational study by Kaufman et al. <2005>. |
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BACKGROUND DATA FILES |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Aerosols and particles (0345, 4801, 4906), Atmospheric Processes, Remote sensing, Atmospheric Processes, Radiative processes, Oceanography, Biological and Chemical, Aerosols (0305, 4906) |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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