Email this article On a Method for Measuring Methane Concentration on Extended Atmospheric Paths Using a Remote Gas Analyzer with a Powerful Raman Amplifier
- Authors: Akimova G.A.1, Grigorievsky V.I.2, Syrykh Y.P.1, Sadovnikov V.P.2, Tezadov Y.A.2, Fedenev A.V.1
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Affiliations:
- Central Research Institute of Mechanical Engineering
- Fryazino Branch, Institute of Radio Engineering and Electronics, Russian Academy of Sciences
- Issue: Vol 64, No 11 (2019)
- Pages: 1251-1255
- Section: Novel Radio Systems and Elements
- URL: https://journals.rcsi.science/1064-2269/article/view/201540
- DOI: https://doi.org/10.1134/S1064226919110019
- ID: 201540
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Abstract
Abstract—The paper presents the results of methane concentration measurements on extended horizontal and vertical paths in the Earth’s atmosphere using a laser-generated remote gas analyzer based on a two-stage Raman amplifier with an output power of about 3 W in quasi-continuous mode with linear-frequency modulation of the laser and distributed feedback. An empirical expression of the weight function for anomalous gas distribution is obtained with a maximum concentration at a height of ~700 m and an anomalously low concentration at heights above 1000 m. This distribution agrees well with the experimental data obtained for a situational plan with additional methane emission sources. During measurements, the water absorption line was detected, which strongly depends on atmospheric humidity and can be used to refine weather data and ecological conditions.
About the authors
G. A. Akimova
Central Research Institute of Mechanical Engineering
Email: vig248@ire216.msk.su
Russian Federation, Korolev, Moscow oblast, 141070
V. I. Grigorievsky
Fryazino Branch, Institute of Radio Engineering and Electronics, Russian Academy of Sciences
Author for correspondence.
Email: vig248@ire216.msk.su
Russian Federation, Fryazino, Moscow oblast, 141190
Yu. P. Syrykh
Central Research Institute of Mechanical Engineering
Email: vig248@ire216.msk.su
Russian Federation, Korolev, Moscow oblast, 141070
V. P. Sadovnikov
Fryazino Branch, Institute of Radio Engineering and Electronics, Russian Academy of Sciences
Email: vig248@ire216.msk.su
Russian Federation, Fryazino, Moscow oblast, 141190
Y. A. Tezadov
Fryazino Branch, Institute of Radio Engineering and Electronics, Russian Academy of Sciences
Email: vig248@ire216.msk.su
Russian Federation, Fryazino, Moscow oblast, 141190
A. V. Fedenev
Central Research Institute of Mechanical Engineering
Email: vig248@ire216.msk.su
Russian Federation, Korolev, Moscow oblast, 141070
