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Unfiltering of the Geostationary Earth Radiation Budget (GERB) Data. Part I: Shortwave Radiation
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Journal of Atmospheric and Oceanic Technology
- Article date:
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July 1, 2008
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Copyright informationCopyright American Meteorological Society Jul 2008. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
The method used to estimate the unfiltered shortwave broadband radiance from the filtered radiances measured by the Geostationary Earth Radiation Budget (GERB) instrument is presented. This unfiltering method is used to generate the first released edition of the GERB-2 dataset. The method involves a set of regressions between the unfiltering factor (i.e., the ratio of the unfiltered and filtered broadband radiances) and the narrowband observations of the Spinning Enhanced Visible and Infrared Imager (SEVIRI) instrument. The regressions are theoretically derived from a large database of simulated spectral radiance curves obtained by radiative transfer computations. The generation of ...
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