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Proceedings Paper

Spectral structure of the water vapour continuum absorption in 2.7 and 6.25 μm bands
Author(s): Igor V. Ptashnik; Tatyana E. Klimeshina; Tatyana M. Petrova; Alexander A. Solodov; Alexander M. Solodov
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Paper Abstract

For the first time, the low-temperature (from -9 to 15 ° C) Fourier Transform Spectroscopy laboratory measurements of the pure water vapor absorption spectra are performed in the near-infrared spectral region, and self-continuum absorption is retrieved within 1600 cm-1 (6.25 μm) and 3600 cm-1 (2.7μm) absorption bands. The proportion of true-bound and quasi-bound water dimers in the equilibrium water vapor is derived by fitting their model spectra to the spectral features of the retrieved continuum. The results are in reasonable agreement with statistical calculations and support the idea of complimentary contribution stable and metastable dimers to the spectral structure of water vapor continuum within absorption bands.

Paper Details

Date Published: 19 November 2015
PDF: 6 pages
Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 968006 (19 November 2015); doi: 10.1117/12.2205414
Show Author Affiliations
Igor V. Ptashnik, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Tatyana E. Klimeshina, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Tatyana M. Petrova, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Alexander A. Solodov, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Alexander M. Solodov, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)


Published in SPIE Proceedings Vol. 9680:
21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii, Editor(s)

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