Retrieval of content of greenhouse gases from atmospheric spectra of solar radiation with the use of different spectroscopic data on absorption lines
T.Yu. Chesnokova1, A.V. Chentsov1, N.V. Rokotyan2, V.I. Zakharov2
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2Ural Federal University named after the first President of Russia B.N. Yeltsin, 620083, 51 Lenina, Ekaterinburg, Russia
Keywords: atmospheric transmission, spectroscopic databanks, carbon dioxide, methane
Abstract
A comparison of atmospheric solar spectra, calculated with different data on the atmospheric gas absorption lines, with the spectra measured by a ground-based Fourier-spectrometer with a high spectral resolution is made. The carbon dioxide and methane total contents in the atmospheric column are retrieved from the measured spectra with the use of modern spectroscopic databases in a direct model. It is shown that the values of the atmospheric methane content retrieved with the use of the recent versions of the HITRAN spectroscopic database differ almost by 2%; for the carbon dioxide, the lesser difference is observed.
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