Measurement of methane content in the atmosphere by OPO lidar system

被引：0

作者：

Romanovskii, O. A. ^{[1
]}

Sadovnikov, S. A. ^{[1
]}

Kharchenko, O. V. ^{[1
]}

Yakovlev, S. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, VE Zuev Inst Atmospher Opt, 1 Acad VE Zuev Sq, Tomsk 634055, Russia

来源：

25TH INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS: ATMOSPHERIC PHYSICS | 2019年 / 11208卷

基金：

俄罗斯基础研究基金会;

关键词：

lidar; optical parametric oscillator; absorption; CH4;

D O I：

10.1117/12.2539599

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

A series of laboratory experiments was carried out to measure the absorption of the IR OPO laser radiation by methane within a calibrated CH4:N-2 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 mu m 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.

引用

页数：5

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