H2O absorption spectra in the IR region

Vladimir M. Deichuli; Tatiana M. Petrova; Alexandr M. Solodov; Alexandr A. Solodov; Tatiana Yu. Chesnokova; Alexey V. Chentsov

doi:10.1117/12.2690386

17 October 2023 H₂O absorption spectra in the IR region

Vladimir M. Deichuli, Tatiana M. Petrova, Alexandr M. Solodov, Alexandr A. Solodov, Tatiana Yu. Chesnokova, Alexey V. Chentsov

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Proceedings Volume 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 127800Y (2023) https://doi.org/10.1117/12.2690386
Event: XXIX International Symposium "Atmospheric and Ocean Optics, Atmospheric Physics", 2023, Moscow, Russian Federation

Abstract

The absorption spectra of the mixtures of water vapor and air at different partial pressures of both gases have been recorded using a Fourier spectrometer IFS 125 HR in the 3500−5670 cm^–1 spectral region. The multispectrum fitting procedure has been applied to these spectra to recover the spectral line parameters. The traditional Voigt and quadratic speed-dependent Voigt ones were used. Particular attention was paid to the analysis of the broadening and shift coefficients of the H₂O absorption lines. The significant difference between the obtained and literary data was shown. The atmospheric transmission was simulated with the H₂O absorption lines from the HITRAN and GEISA spectroscopic databases and with new lines parameters obtained in this work.

Citation Download Citation

Vladimir M. Deichuli, Tatiana M. Petrova, Alexandr M. Solodov, Alexandr A. Solodov, Tatiana Yu. Chesnokova, and Alexey V. Chentsov "H₂O absorption spectra in the IR region", Proc. SPIE 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 127800Y (17 October 2023); https://doi.org/10.1117/12.2690386

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