Influence of accounting for water-vapor continuum absorption on the calculation of radiative processes in the atmosphere

T. Yu. Chesnokova

doi:10.1117/12.337011

13 January 1999 Influence of accounting for water-vapor continuum absorption on the calculation of radiative processes in the atmosphere

T. Yu. Chesnokova

Author Affiliations +

Proceedings Volume 3583, Fifth International Symposium on Atmospheric and Ocean Optics; (1999) https://doi.org/10.1117/12.337011
Event: Fifth International Symposium on Atmospheric and Ocean Optics, 1998, Tomsk, Russian Federation

Abstract

At present, the tendency of global warming of the earth climate is observed. The climate depends on even small changes of radiative processes in the atmosphere. According to recent conceptions, the 'green house' effect can be connected with the increasing concentration of minor gaseous components, such as CO₂, CO, CH₄, and freons, therewith the contribution of the letter is comparable to that of CO₂. A radiance transfer through the atmosphere is performed through spectral transmission windows, in which one of the basic roles belongs to water vapor continuum absorption. Different recent models of continuum absorption, based on the experimental data, are considered here. The long-wave radiance flux calculation is made on the basis of these models. It is shown that the error of the radiative fluxes calculation in the transmission windows is of the same order as the contribution of some atmospheric minor gaseous constituents and often exceeds it. Therefore, the accurate analytical expressions, describing the water continuum absorption and accounting for the nonlinear dependence of the absorption on humidity, temperature, wavelength and other factors, are needed.

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T. Yu. Chesnokova "Influence of accounting for water-vapor continuum absorption on the calculation of radiative processes in the atmosphere", Proc. SPIE 3583, Fifth International Symposium on Atmospheric and Ocean Optics, (13 January 1999); https://doi.org/10.1117/12.337011

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