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Bias characterization of CrIS shortwave temperature sounding channels using fast NLTE model and GFS forecast field

Title: Bias characterization of CrIS shortwave temperature sounding channels using fast NLTE model and GFS forecast field.
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Name(s): Yin, Mengtao, author
Type of Resource: text
Genre: Text
Date Issued: 2016-02-16
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The strong nonlocal thermal equilibrium (NLTE) emission in the upper atmosphere impedes the usage of Cross-track Infrared Sounder (CrIS) temperature channels near 4.3 mu m in the operational data assimilation. This study explores the bias characteristics of those temperature channels near 4.3 mu m with and without a fast NLTE model implemented in the Community Radiative Transfer Model (CRTM). It is shown that the biases of those temperature channels can reach up to 12K and are dramatically reduced to below 4K during daytime by the fast NLTE model with small differences from the nighttime biases. However, the biases after applying the NLTE correction remain large for CrIS upper atmospheric temperature channels during both daytime and nighttime. A further investigation suggests that the remaining biases in those temperature channels mainly originate from the cold biases in the stratospheric temperature profiles of National Center for Environmental Prediction Global Forecast System (GFS) forecasts as input to CRTM. The cold biases reach the maximum of about 8K near the tropics at about 1hPa, decreasing toward higher latitudes and lower altitudes.
Identifier: FSU_libsubv1_wos_000371481700014 (IID), 10.1002/2015JD023876 (DOI)
Keywords: airs, bias, co2, CrIS, Data assimilation, data assimilation system, ecmwf, era-interim reanalysis, iasi, NLTE, npp, numerical weather prediction, satellite data
Publication Note: The publisher’s version of record is available at http://www.dx.doi.org/10.1002/2015JD023876
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000371481700014
Owner Institution: FSU
Is Part Of: Journal of Geophysical Research-Atmospheres.
2169-897X
Issue: iss. 3, vol. 121

Choose the citation style.
Yin, M. (2016). Bias characterization of CrIS shortwave temperature sounding channels using fast NLTE model and GFS forecast field. Journal Of Geophysical Research-Atmospheres. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000371481700014