Abstract

The influence of the spectral lines of atmospheric gases on the retrieval of the methane concentration from the measurement of the solar radiation spectrum in the spectral region of 1.6–1.7 μm is studied. The modeling of the atmospheric transmission function for different vertical profiles of the methane and ethylene concentration in this range has shown the necessity of taking into account the ethylene spectral absorption lines in radiation calculations in this range in addition to the CH4, H2O, and CO2 usually taken into account.

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