Determination of the methane content in the atmosphere using correlation radiometer |
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| Authors: | S A Shishigin |
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| Institution: | 1.Zuev Institute of Atmospheric Optics, Siberian Branch,Russian Academy of Sciences,Tomsk,Russia |
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| Abstract: | In this work the procedure of replacing the inhomogeneous atmosphere with homogeneous layers is discussed. The absorption and emission functions of a layer in a selected spectral region are the same as they are for the inhomogeneous layer. The dependence of the effective brightness temperature of a layer on its thickness is shown in the methane absorption band 1220–1260 cm–1. Negative values of luminosity spectral density of a homogenous atmospheric layer with a width of over 3200 m indicate an increase in the weakening role of the layer for the outgoing radiation in the considered atmospheric model. The application of the method of gas optical filter correlation for a measurement of the methane content in the near-ground atmospheric layer from an aerospace platform is considered. |
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