Dynamics of surface carbon dioxide and methane concentrations on the Arctic Belyy Island in 2015-2017 summertime

Konstantin L. Antonov; Vassily A. Poddubny; Yury I. Markelov; Alexander G. Buevich; Alexander N. Medvedev

doi:10.1117/12.2504770

13 December 2018 Dynamics of surface carbon dioxide and methane concentrations on the Arctic Belyy Island in 2015-2017 summertime

Konstantin L. Antonov, Vassily A. Poddubny, Yury I. Markelov, Alexander G. Buevich, Alexander N. Medvedev

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108336H (2018) https://doi.org/10.1117/12.2504770
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

The paper presents some results of greenhouse gases in situ measurements in 2015-2017 summertime from a high Arctic Belyy Island (Russia). The atmospheric CO₂ concentration has increased by 3.1 ppm per year, which is 1.5 times higher than the mean annual global rate during last 10 years. However, the absolute CO₂ levels were significantly less than the global background, which exceeded 400 ppm in 2015. The CH₄ content had not changed, but in summer periods tundra ecosystem of the island was shown to remain a local net CH₄ source in comparison to marine ecosystem. Possible mechanisms of forming mean diurnal cycles of CO₂and CH4 concentration are discussed. The temperature dependences of the measured parameters are established, indicating a significant sensitivity of carbon balance in the arctic tundra to the air temperature variability.

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Konstantin L. Antonov, Vassily A. Poddubny, Yury I. Markelov, Alexander G. Buevich, and Alexander N. Medvedev "Dynamics of surface carbon dioxide and methane concentrations on the Arctic Belyy Island in 2015-2017 summertime", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108336H (13 December 2018); https://doi.org/10.1117/12.2504770

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