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Detailed Reference Information |
DeSouza-Machado, S.G., Strow, L.L., Hannon, S.E., Motteler, H.E., Lopez-Puertas, M., Funke, B. and Edwards, D.P. (2007). Fast forward radiative transfer modeling of 4.3 µm nonlocal thermodynamic equilibrium effects for infrared temperature sounders. Geophysical Research Letters 34: doi: 10.1029/2006GL026684. issn: 0094-8276. |
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Retrieval algorithms for downlooking infrared sounders typically avoid using channels from the 4.3 ¿m CO2 region that probe the mid- and upper-atmosphere due to very high altitude Non Local Thermodynamic Equilibrium (NLTE) emission, which can add as much as 10 K to the measured daytime brightness temperatures (BT). In this paper we report a fast radiative transfer model for a nadir sounding instrument (AIRS) that includes the effects of NLTE, allowing the retrieval algorithm to use many short wave CO2 channels for upper-air soundings. Model biases and standard deviations are very similar for both day and night. This work allows an infrared sounder to probe the upper atmosphere much more completely using only short wave 4.3--4.5 ¿m channels. |
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Abstract |
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Keywords
Atmospheric Processes, Radiative processes, Atmospheric Processes, Remote sensing, Atmospheric Processes, Stratosphere/troposphere interactions |
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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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