ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 6, pp. 253-264

Analysis of methane variations on the Arctic coast in the summer-autumn period

V.S. Starodubtsev 1 , V.S. Solovyev 1, 2 
1 Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS, Yakutsk, Russia
2 M.K. Ammosov North-Eastern Federal University, Yakutsk, Russia
Accepted: 21.10.2021
DOI: 10.21046/2070-7401-2021-18-6-253-264
In this study, methane concentration variations on the Arctic coast were analyzed using data from three arctic stations: Barrow (USA), Tiksi (Russia), Alert (Canada), and remote sensing data (AIRS/Aqua). According to the data from ground-based stations, methane concentration experienced a 6–7 % increase during 1980–2019. A similar increase (5–6 %) is also reported by AIRS data for a shorter period (2003–2019). Analysis of seasonal variation revealed short-term bursts in methane concentration, which were often observed during the off-season (summer – autumn) at Barrow (June – November) and Tiksi (June – September) stations, while no similar events were found at Alert. It is assumed that the probable cause of such bursts is wind dynamics at observation points. Additionally, we used AIRS data to analyze the spatial distribution of methane concentration at 400 hPa pressure level during summer – autumn and winter – spring periods. It is shown that during the summer – autumn period higher methane concentrations are observed over land, while during the winter – spring period there is no significant difference between the methane concentration over land and water surface.
Keywords: methane, Arctic, remote sensing, AIRS, HYSPLIT
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