Water vapor continuum absorption within the v2 band and in its high-frequency wing upon violation of the long-wave approximation for the centers of mass of molecules
O.B. Rodimova
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: continuum absorption, v2 H2O band, temperature behavior, line wing, dimer absorption
Abstract
The paper considers the possible structure of the water vapor continuum absorption. The continuum absorption within the v2 H2O band and in its high-frequency wing was calculated based on the asymptotic line wing theory (ALWT) taking into account the violation of the long-wave approximation for the centers of mass of molecules. To explain the spectral and temperature behavior of the continuum absorption coefficient, the same line profile was used throughout the entire frequency range under study. The results are important for problems of spectroscopy and radiation propagation in different media.
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