Ratio between Monomer and Dimer Absorption in Water Vapor within the H2O Rotational Band

被引：3
作者：
Bogdanova Y.V. [1 ]
Rodimova O.B. [2 ]
机构：
[1] Tomsk State Pedagogical University, Tomsk
[2] V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk
来源：
Atmospheric and Oceanic Optics | 2018年 / 31卷 / 5期
关键词：
microwave absorption; spectral line wings; water dimers; water vapor;
D O I：
10.1134/S1024856018050056
中图分类号：
学科分类号：
摘要：
Spectral line shape derived using the asymptotic line wing theory (ALWT) with parameters obtained from fitting to experiment in the 8–12-μm spectral region, which describes the spectral and temperature behavior of water vapor absorption in this region, is used to calculate absorption in the longwave wing of the H2O rotational band. The absorption coefficient calculated with the ALWT takes into account absorption by any colliding molecular pairs, except for the absorption due to stable dimers. Application of this line shape to calculation of the absorption coefficient in the region 14–200 cm−1 allows us to extract the stable dimer absorption from the absorption measured with a special-resonator spectrometer. The dimer absorption spectrum derived shows consistency with the spectra from quantum-mechanical calculations and spectra measured in other experiments. © 2018, Pleiades Publishing, Ltd.
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收藏
页码：457 / 465
页数：8
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