Computer Science – Sound
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3401802d&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 1, CiteID L01802
Computer Science
Sound
1
Atmospheric Processes: Radiative Processes, Atmospheric Processes: Remote Sensing, Atmospheric Processes: Stratosphere/Troposphere Interactions
Scientific paper
Retrieval algorithms for downlooking infrared sounders typically avoid using channels from the 4.3 μm 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 μm channels.
DeSouza-Machado S. G.
Edwards David P.
Funke Bernd
Hannon S. E.
Larrabee Strow L.
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