Role of the Transient Layer in the Methane Emissions on the Dominant Landscapes of Typical Tundra under Climate Warmingтезисы доклада

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1. Полный текст Oblogov_Pushchino_2019.pdf 219,8 КБ 27 мая 2019 [OblogovGE]

[1] Role of the transient layer in the methane emissions on the dominant landscapes of typical tundra under climate warming / G. Oblogov, A. Vasiliev, E. Rivkina et al. // International Conference “Solving the puzzles from Cryosphere” : Program, Abstracts : Pushchino, Russia, April 15–18, 2019. — Москва, 2019. — P. 193–194. The Arctic is the one of the largest natural sources of methane (CH4) emissions. In these high-latitudinal regions, permafrost is almost universally occurs and serves as a natural waterproof layer. This causes a high degree of swamping and ensures the existence of anaerobic conditions within the seasonal thawing layer. In these conditions, methanogenic microorganisms are actively reproducing. It was established, that in addition to entering significant amounts into the atmosphere, methane could persist in the frozen soil horizons throughout the winter. In horizons that thaw seldomly for many years, more quantity of the methane accumulating for a longer time. In this regard, particular interest is the quantifying the methane content in the transient layer of cryolithozone, that is the layer that thaws periodically only in some particularly warm years.

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