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Measurement of methane content in the atmosphere by OPO lidar system
Author(s): O. A. Romanovskii; S. A. Sadovnikov; O. V. Kharchenko; S. V. Yakovlev
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Paper Abstract

A series of laboratory experiments was carried out to measure the absorption of the IR OPO laser radiation by methane within a calibrated CH4:N2 molecular mixture in a gas cell. The results of measurements of the laser radiation absorption at sounding wavelengths selected are presented and compared with the calculation results. Backscattered signals in the 3.30–3.43 μm spectral range are detected and processed with the use of the IR OPO lidar system designed along a horizontal sounding path in the atmosphere. Based on the experimental results, the absorption coefficients are estimated and the CH4 concentrations along a 800 m surface path are retrieved in the spectral range under study with a spatial resolution of 100 m.

Paper Details

Date Published: 18 December 2019
PDF: 5 pages
Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1120835 (18 December 2019); doi: 10.1117/12.2539599
Show Author Affiliations
O. A. Romanovskii, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
S. A. Sadovnikov, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
O. V. Kharchenko, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
S. V. Yakovlev, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)


Published in SPIE Proceedings Vol. 11208:
25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii; Gennadii G. Matvienko, Editor(s)

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