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Open AccessArticle

Remote Sensing of Atmospheric Methane with IR OPO Lidar System

1
V.E. Zuev Institute of Atmospheric Optics SB RAS, 634055 Tomsk, Russia
2
Faculty of Radiophysics, National Research Tomsk State University, 634050 Tomsk, Russia
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(1), 70; https://doi.org/10.3390/atmos11010070
Received: 11 November 2019 / Revised: 31 December 2019 / Accepted: 3 January 2020 / Published: 6 January 2020
(This article belongs to the Special Issue Atmospheric and Ocean Optics: Atmospheric Physics)
A differential absorption lidar (DIAL) system designed on the basis of optical parametric oscillators (OPO) with nonlinear KTiOAsO4 (KTA) and KTiOPO4 (KTP) crystals is described. The crystals allow laser radiation tuning in the infrared region (IR) wavelength region. The measurements in the 3.30–3.50 μm spectral range, which includes a strong absorption band of methane, are carried out. Lidar backscattered signals in the spectral band 3.30–3.50 μm has been measured and analyzed along the horizontal path in the atmosphere. Based on the experimental results, CH4 concentrations ~2.085 ppm along a 800 m surface path are retrieved in the spectral range under study with a spatial resolution of 100 m. View Full-Text
Keywords: IR lidar; DIAL; methane IR lidar; DIAL; methane
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MDPI and ACS Style

Yakovlev, S.; Sadovnikov, S.; Kharchenko, O.; Kravtsova, N. Remote Sensing of Atmospheric Methane with IR OPO Lidar System. Atmosphere 2020, 11, 70.

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