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2014, № 9 (170)



Shnyrev N.A., Smagin A.V. DISTRIBUTION AND EMISSION OF METHANE IN SNOW COVER OF WEST SIBERIAN BOGSWe study the emission of methane fluxes from the snow surface in oligotrophic West Siberian swamp and profile distribution patterns of this gas in the snow thicker. Physically reasonable mathematical model of the process of distribution of methane in the snow cover, combining source on the surface of the peat soil and mechanism of diffusion transport of escaping gas from the soil into the atmosphere are developed. Stationary model variants are used to calculate emission of methane emissions from data on the profile of gas distribution (gradient method of snow survey). Calculated data often exceed the measured by chamber method flows 2-3 times or more, varying in the range of 0,01–0,2 mgС/m2/h. The proposed method of snow survey can successfully evaluate gas flows from marsh into the atmosphere during the cold season, smoothing their inherent large variation.Key words: methane in wetlands, winter observations, profile distribution in the snow, emission, diffusive transport, mathematical modeling.

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About this article

Authors: Shnyrev N.A., Smagin A.V.

Year: 2014


Editor-in-chief
Sergey Aleksandrovich
MIROSHNIKOV

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