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EVIDENCE OF ATMOSPHERIC RESPONSE TO METHANE EMISSIONS FROM THE EAST SIBERIAN ARCTIC SHELF

https://doi.org/10.24057/2071-9388-2018-11-1-85-92

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Abstract

Average atmospheric methane concentration (CH4) in the Arctic is generally higher than in other regions of the globe. Due to the lack of observations in the Arctic there is a deficiency of robust information about sources of the methane emissions. Measured concentrations of methane and its isotopic composition in ambient air can be used to discriminate sources of CH4. Here we present the results of measurements of the atmospheric methane concentration and its isotope composition (δ13CCH4) in the East Siberian Arctic Seas during the cruise in the autumn 2016. Local sections where the concentration of methane in the near-water layer of the atmosphere reaches 3.6 ppm are identified. The measurements indicated possibility of formation of high methane peaks in atmospheric surface air above the East Siberian Arctic Shelf (ESAS) where methane release from the bottom sediments has been assumed.

About the Authors

Natalia Pankratova
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation

Natalia V. Pankratova currently works as Scientific Researcher in the Laboratory of Atmospheric Gaseous Species 

Moscow



Andrey Skorokhod
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation
Moscow


Igor Belikov
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation
Moscow


Nikolai Elansky
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation
Moscow


Vadim Rakitin
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation
Moscow


Yury Shtabkin
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation
Moscow


Elena Berezina
A.M. Obukhov Institute of Atmospheric Physics of Russian Academy of Sciences
Russian Federation
Moscow


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For citation:


Pankratova N., Skorokhod A., Belikov I., Elansky N., Rakitin V., Shtabkin Y., Berezina E. EVIDENCE OF ATMOSPHERIC RESPONSE TO METHANE EMISSIONS FROM THE EAST SIBERIAN ARCTIC SHELF. GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY. 2018;11(1):85-92. https://doi.org/10.24057/2071-9388-2018-11-1-85-92

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ISSN 2071-9388 (Print)
ISSN 2542-1565 (Online)