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Pressure-induced absorption coefficients for radiative transfer calculations in Titan's atmosphereThe semiempirical theory of Birnbaum and Cohen (1976) is used to calculate the FIR pressure-induced absorption (PIA) spectra of N2, CH4, N2 + Ar, N2 + CH4, and N2 + H2 under conditions like those in the Titan troposphere. The results are presented graphically and compared with published data from laboratory measurements of PIA in the same gases and mixtures (Dagg et al., 1986; Dore et al., 1986). Good agreement is obtained, with only a slight underestimation of PIA at 300-400/cm in the case of CH4. The absorption coefficients are presented in tables, and it is suggested that the present findings are of value for evaluating the effects of tropospheric clouds on the Titan FIR spectrum and studying the greenhouse effect near the Titan surface.
Document ID
19880059138
Document Type
Reprint (Version printed in journal)
Authors
Courtin, Regis (NASA Ames Research Center Moffett Field, CA; Paris, Observatoire, Meudon, France)
Date Acquired
August 13, 2013
Publication Date
August 1, 1988
Publication Information
Publication: Icarus
Volume: 75
ISSN: 0019-1035
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other