Vol. 34, issue 02, article # 3

Rodimova O. B., Klimeshina T. E. Foreign-continuum absorption in the wings of the IR H2O bands. // Optika Atmosfery i Okeana. 2021. V. 34. No. 02. P. 93–100. DOI: 10.15372/AOO20210203 [in Russian].
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The H2O foreign-continuum absorption in the IR region is regarded according to the asymptotic line wing theory presenting absorption as a sum of the individual line absorption coefficients with a special line shape at far distances from the line center. The line shape parameters pertaining to quantum and classical Н2О–N2 interaction potentials are found as a result of fitting the experimental absorption data in the 4200–5000 cm-1 spectral interval and the data on the temperature dependence of the second virial coefficient. This line shape is used for calculation of the continuum absorption in the 1000–10000 cm-1 region.


water vapor continuum, water-nitrogen continuum absorption, spectral line wings, second virial coefficient


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