Ecological monitoring of methane, carbon oxides, and dinitrogen monoxide in air by Fourier-transform spectroscopy

Yu. I. Baranov; E. L. Baranova; F. V. Kashin

doi:10.1117/12.370534

19 November 1999 Ecological monitoring of methane, carbon oxides, and dinitrogen monoxide in air by Fourier-transform spectroscopy

Yu. I. Baranov, E. L. Baranova, F. V. Kashin

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Proceedings Volume 3983, Sixth International Symposium on Atmospheric and Ocean Optics; (1999) https://doi.org/10.1117/12.370534
Event: Sixth International Symposium on Atmospheric and Ocean Optics, 1999, Tomsk, Russian Federation

Abstract

The urgence of studies of minor gas constituents (MGC) variations in the atmosphere is necesitated by several causes. The basic one is connected with the need to forecast climatic and ecological consequences of air composition changes as a result of man-made impact. A constant increase of such active in IR absorption gases as carbon dioxide, methane, dinitrogen monoxide is a real fact. A knowledge of tendencies in the atmospheric gas composition and its linkes with natural and anthropogemc factors is necessary for diagnostic estimations of thermal (radiation) balance changes and of the Earth's climate. The necessity of monitoring the toxic carbon monoxide content in the atmospheric boundary layer is caused by increasing CO emission due to growing traffic that presents a considerable ecological problem for large populated areas. The methods for measuring MGC in the atmosphere are very different. In the world monitoring network containing now more than two dozens of stations special, highly-accurate instrumentation (gas chromatographs and optico-acoustical gas analyzers) are used there as a rule [1]. The list of gases for monitoring includes carbon dioxide, methane, dinitrogen monoxiue and some freons. Rather widely used is the method of spectral analysis based on solar infrared (IR) radiation absorption in the atmospheric column [2]. Well-known are different methods of air pollution remote control with the use of laser radiation sources. The paper presents the measurement results for methane, dinitrogen monoxide and carbon oxides contents in air samples obtained by the method of spectral analysis in the IR spectral range with a Fourier-transform spectrometer and a multipass cell.

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Yu. I. Baranov, E. L. Baranova, and F. V. Kashin "Ecological monitoring of methane, carbon oxides, and dinitrogen monoxide in air by Fourier-transform spectroscopy", Proc. SPIE 3983, Sixth International Symposium on Atmospheric and Ocean Optics, (19 November 1999); https://doi.org/10.1117/12.370534

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KEYWORDS

Carbon monoxide

Methane

Error analysis

Spectroscopy

Statistical analysis

Atmospheric monitoring

Oxides

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