An examination of a technique for estimating the longwave radiation budget from satellite radiance observations |
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Authors: | RG Ellingson RR Ferraro A Gruber |
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Institution: | 1. Department of Meteorology, University of Maryland College Park, Maryland, USA;7. National Oceanic and Atmospheric Administration, Washington, D.C., USA |
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Abstract: | Intercomparisons of the zonally averaged outgoing longwave fluxes estimated from 10 μm radiance observations on NOAA polar orbiters and flat plate observations on the Nimbus 6 ERB experiment have shown the NOAA estimates to be higher than the ERB measurements. Our analysis shows that the operational technique systematically overestimates calculated fluxes for middle and high cloud conditions. A different radiative transfer model and new assumptions concerning clouds reduce the NOAA-ERB flux difference by approximately 35%. |
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