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The Royal Society, Philosophical Transactions of the Royal Society B: Biological Sciences, 1810(375), p. 20190517, 2020

DOI: 10.1098/rstb.2019.0517

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Effect of the 2018 European drought on methane and carbon dioxide exchange of northern mire ecosystems

Journal article published in 2020 by J. Rinne ORCID, J.-P. Tuovinen ORCID, L. Klemedtsson ORCID, M. Aurela ORCID, J. Holst ORCID, A. Lohila ORCID, P. Weslien ORCID, P. Vestin ORCID, P. Łakomiec ORCID, M. Peichl ORCID, E.-S. Tuittila ORCID, L. Heiskanen ORCID, T. Laurila ORCID, X. Li ORCID, P. Alekseychik ORCID and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We analysed the effect of the 2018 European drought on greenhouse gas (GHG) exchange of five North European mire ecosystems. The low precipitation and high summer temperatures in Fennoscandia led to a lowered water table in the majority of these mires. This lowered both carbon dioxide (CO 2 ) uptake and methane (CH 4 ) emission during 2018, turning three out of the five mires from CO 2 sinks to sources. The calculated radiative forcing showed that the drought-induced changes in GHG fluxes first resulted in a cooling effect lasting 15–50 years, due to the lowered CH 4 emission, which was followed by warming due to the lower CO 2 uptake. This article is part of the theme issue ‘Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale’.