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Foreign-Continuum Absorption in the Wings of IR H2O Bands

Foreign-Continuum Absorption in the Wings of IR H2O Bands —The H2O foreign-continuum absorption in the IR region is considered within the asymptotic line wing theory, where absorption is represented as the sum of the absorption coefficients of individual lines of a special profile at far distances from the line centers. The line profile parameters pertaining to quantum and classical Н2О–N2 interaction potentials are found from fitting the experimental data on absorption in the 4200–5000 cm−1 spectral range and on the temperature dependence of the second virial coefficient. This line profile is used for calculation of the continuum absorption in the 1000–10 000 cm−1 range. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Atmospheric and Oceanic Optics Springer Journals

Foreign-Continuum Absorption in the Wings of IR H2O Bands

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Publisher
Springer Journals
Copyright
Copyright © Pleiades Publishing, Ltd. 2021. ISSN 1024-8560, Atmospheric and Oceanic Optics, 2021, Vol. 34, No. 3, pp. 190–197. © Pleiades Publishing, Ltd., 2021. Russian Text © The Author(s), 2021, published in Optika Atmosfery i Okeana.
ISSN
1024-8560
eISSN
2070-0393
DOI
10.1134/s1024856021030131
Publisher site
See Article on Publisher Site

Abstract

—The H2O foreign-continuum absorption in the IR region is considered within the asymptotic line wing theory, where absorption is represented as the sum of the absorption coefficients of individual lines of a special profile at far distances from the line centers. The line profile parameters pertaining to quantum and classical Н2О–N2 interaction potentials are found from fitting the experimental data on absorption in the 4200–5000 cm−1 spectral range and on the temperature dependence of the second virial coefficient. This line profile is used for calculation of the continuum absorption in the 1000–10 000 cm−1 range.

Journal

Atmospheric and Oceanic OpticsSpringer Journals

Published: Jul 5, 2021

Keywords: water vapor continuum; water-nitrogen continuum absorption; spectral line wings; second virial coefficient

References