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Infrared radiation models for atmospheric methaneMutually consistent line-by-line, narrow-band and broad-band infrared radiation models are presented for methane, a potentially important anthropogenic trace gas within the atmosphere. Comparisons of the modeled band absorptances with existing laboratory data produce the best agreement when, within the band models, spurious band intensities are used which are consistent with the respective laboratory data sets, but which are not consistent with current knowledge concerning the intensity of the infrared fundamental band of methane. This emphasizes the need for improved laboratory band absorptance measurements. Since, when applied to atmospheric radiation calculations, the line-by-line model does not require the use of scaling approximations, the mutual consistency of the band models provides a means of appraising the accuracy of scaling procedures. It is shown that Curtis-Godson narrow-band and Chan-Tien broad-band scaling provide accurate means of accounting for atmospheric temperature and pressure variations.
Document ID
19870027233
Document Type
Reprint (Version printed in journal)
Authors
Cess, R. D. (State Univ. of New York Stony Brook, NY, United States)
Kratz, D. P. (State Univ. of New York Stony Brook, NY, United States)
Caldwell, J. (New York, State University Stony Brook, United States)
Kim, S. J. (NASA Goddard Space Flight Center Greenbelt, MD; New York, State University, Stony Brook, United States)
Date Acquired
August 13, 2013
Publication Date
August 20, 1986
Publication Information
Publication: Journal of Geophysical Research
Volume: 91
ISSN: 0148-0227
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSG-7320
CONTRACT_GRANT: NSF ATM-85-15310
Distribution Limits
Public
Copyright
Other