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Proceedings Paper

Measurements of the methane content in the atmospheric boundary layer in the atmospheric depth
Author(s): Vladimir N. Aref'ev; Yu. I. Baranov; E. L. Baranova; G. I. Bougrim; N. Ye. Kamenogradsky; F. V. Kashin
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Paper Abstract

The results of continuous measurements of methane concentrations (CH4) in air samples taken near the ground and in the atmospheric depth (column) in Obninsk in 1998 - 2001 are given. The air samples were taken in town so the measurement results were affected by not only natural but also by anthropogenic sources. Under a temperature inversion in the atmospheric boundary layer the concentrations of CH4 found were significantly higher than its typical values. This is caused by anthropogenic CH4 accumulation in air near the ground due to the absence of vertical mixing at a temperature inversion. Seasonal variations of methane in the boundary layer were determined over CH4 minimal concentrations. A height- averaged concentration of methane in the atmospheric column was determined over the solar radiation spectra in the absorption band of CH4 with the center at 3.3 micrometers . A comparison of the results shows that methane concentration near the ground exceeds its height-averaged concentration in the atmospheric column by about 0.15 ppm.

Paper Details

Date Published: 28 February 2002
PDF: 5 pages
Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); doi: 10.1117/12.458472
Show Author Affiliations
Vladimir N. Aref'ev, Institute of Experimental Meteorology SPA Typhoon (Russia)
Yu. I. Baranov, Institute of Experimental Meteorology SPA Typhoon (Russia)
E. L. Baranova, Institute of Experimental Meteorology SPA Typhoon (Russia)
G. I. Bougrim, Institute of Experimental Meteorology SPA Typhoon (Russia)
N. Ye. Kamenogradsky, Institute of Experimental Meteorology SPA Typhoon (Russia)
F. V. Kashin, Institute of Experimental Meteorology SPA Typhoon (Russia)


Published in SPIE Proceedings Vol. 4678:
Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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