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Theoretical computation of trace gases retrieval random error from measurements of high spectral resolution infrared sounderThe purpose of this paper is to demonstrate the trace gas profiling capabilities of future passive high spectral resolution (1 cm(exp -1) or better) infrared (600 to 2700 cm(exp -1)) satellite tropospheric sounders. These sounders, such as the grating spectrometer, Atmospheric InfRared Sounders (AIRS) (Chahine et al., 1990) and the interferometer, GOES High Resolution Interferometer Sounder (GHIS), (Smith et al., 1991) can provide these unique infrared spectra which enable us to conduct this analysis. In this calculation only the total random retrieval error component is presented. The systematic error components contributed by the forward and inverse model error are not considered (subject of further studies). The total random errors, which are composed of null space error (vertical resolution component error) and measurement error (instrument noise component error), are computed by assuming one wavenumber spectral resolution with wavenumber span from 1100 cm(exp -1) to 2300 cm(exp -1) (the band 600 cm(exp -1) to 1100 cm(exp -1) is not used since there is no major absorption of our three gases here) and measurement noise of 0.25 degree at reference temperature of 260 degree K. Temperature, water vapor, ozone and mixing ratio profiles of nitrous oxide, carbon monoxide and methane are taken from 1976 US Standard Atmosphere conditions (a FASCODE model). Covariance matrices of the gases are 'subjectively' generated by assuming 50 percent standard deviation of gaussian perturbation with respect to their US Standard model profiles. Minimum information and maximum likelihood retrieval solutions are used.
Document ID
19920024853
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Huang, Hung-Lung
(Wisconsin Univ. Madison, WI, United States)
Smith, William L.
(Wisconsin Univ. Madison, WI, United States)
Woolf, Harold M.
(Wisconsin Univ. Madison, WI, United States)
Theriault, J. M.
(Defence Research Establishment Valcartier Quebec , Canada)
Date Acquired
September 6, 2013
Publication Date
December 1, 1991
Publication Information
Publication: Determination of Atmospheric Moisture Structure and Infrared Cooling Rates from High Resolution MAMS Radiance Data
Subject Category
Geophysics
Accession Number
92N34097
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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