Air-broadening and shift parameters of methane transitions in 6000–6100 cm-1 spectral region

Tatiana M. Petrova; Alexandr M. Solodov; Alexandr A. Solodov; Vladimir M. Deichuli; Tatiana Yu. Chesnokova; Alina L. Baisel

doi:10.1117/12.2541311

18 December 2019 Air-broadening and shift parameters of methane transitions in 6000–6100 cm^-1 spectral region

Tatiana M. Petrova, Alexandr M. Solodov, Alexandr A. Solodov, Vladimir M. Deichuli, Tatiana Yu. Chesnokova, Alina L. Baisel

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Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112080O (2019) https://doi.org/10.1117/12.2541311
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

Abstract

Air pressure induced broadening and shift coefficients for methane absorption lines in the 6000–6100 cm^–1 region have been measured. The spectra were recorded using Bruker IFS 125 HR spectrometer at room temperature, at the spectral resolution of 0.01 and 0.007 cm^–1 and in a wide pressure range of air. The multispectrum fittings with the quadratic speed dependent Voigt profile were performed to retrieve the broadening parameters for CH₄ spectral lines. The atmospheric transmission of CH4 calculated by line-by-line method with use of absorption lines parameters from different spectroscopic databases and data obtained in this work was compared.

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Tatiana M. Petrova, Alexandr M. Solodov, Alexandr A. Solodov, Vladimir M. Deichuli, Tatiana Yu. Chesnokova, and Alina L. Baisel "Air-broadening and shift parameters of methane transitions in 6000–6100 cm^-1 spectral region", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112080O (18 December 2019); https://doi.org/10.1117/12.2541311

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