gesjGEOGRAPHY, ENVIRONMENT, SUSTAINABILITYGEOGRAPHY, ENVIRONMENT, SUSTAINABILITY2071-93882542-1565Russian Geographical Society10.24057/2071-9388-2018-11-1-58-73gesj-381Research ArticleENVIRONMENTОкружающая средаMETHANE EMISSIONS FROM THERMOKARST LAKES IN THE SOUTHERN TUNDRA OF WESTERN SIBERIAKazantsevVladimir S.

Graduated from Moscow State University, Soil science faculty. PhD in biology (2013). Researcher of Laboratory of mathematical ecology A.M. Obukhov Institute of Atmospheric Physics RAS

KrivenokLiudmila A.

Junior researcher at Laboratory of Mathematical Ecology in Institute of Atmospheric Physics RAS and a PhD student at Institute of Forest Science RAS.

CherbuninaMaria Yu.

Research engineer at geocryological department

A.M. Obukhov Institute of Atmospheric Physics Russian Academy of SciencesRussian FederationInstitute of Forest Science, Russian Academy of SciencesRussian FederationLomonosov Moscow State UniversityRussian Federation2018300320181115873Copyright © Kazantsev V.S., Krivenok L.A., Cherbunina M.Y., 20182018Kazantsev V.S., Krivenok L.A., Cherbunina M.Y.Kazantsev V.S., Krivenok L.A., Cherbunina M.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ges.rgo.ru/jour/article/view/381

Lakes are an important natural source of methane – significant greenhouse gas of the modern atmosphere. Monitoring of methane emission from lakes ofnorthern territoriesis needed to update the available estimates of CH4 emission intensity into the atmosphere and to obtain multi-year series of observations. Field measurements of diffuse methane fluxes were carried out on lakes at different stages of thermokarst process located in Yamalo-Nenets Autonomous District (Western Siberia, Russia) during summer 2016 using static chamber method. Some statistical characteristics of measured fluxes were calculated (medians vary from 0.46 to 0.93 mgC-CH4∙m ∙h ), as well as annual diffuse emissions from studied lakes, which values are determined by the area of the lake’s water surface. Daily dynamics of methane fluxes were defined and approximation of fluxes with simple model was done, major factors are temperatures of lake bottom and of the surface air layer.

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The authors declare that there are no conflicts of interest present.