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- Voigt, Carolina; Marushchak, Maija E.; Mastepanov, Mikhail; Lamprecht, Richard E.; Christensen, Torben R.; Dorodnikov, Maxim; Jackowicz‐Korczyński, Marcin; Lindgren, Amelie; Lohila, Annalea; Nykänen, Hannu; Oinonen, Markku; Oksanen, Timo; Palonen, Vesa; Treat, Claire C.; Martikainen, Pertti J.; Biasi, Christina
- Global change biology 2019 v.25 no.5 pp. 1746-1764
- carbon dioxide; carbon sinks; dissolved organic carbon; ecosystems; greenhouse gas emissions; greenhouse gases; methane; monitoring; oxidation; peat; peatlands; permafrost; radiocarbon dating; radionuclides; thawing; vegetation; water table; Arctic region
- ... Permafrost peatlands are biogeochemical hot spots in the Arctic as they store vast amounts of carbon. Permafrost thaw could release part of these long‐term immobile carbon stocks as the greenhouse gases (GHGs) carbon dioxide (CO₂) and methane (CH₄) to the atmosphere, but how much, at which time‐span and as which gaseous carbon species is still highly uncertain. Here we assess the effect of permafr ...
- Kramshøj, Magnus; Albers, Christian N.; Svendsen, Sarah H.; Björkman, Mats P.; Lindwall, Frida; Björk, Robert G.; Rinnan, Riikka
- Global change biology 2019 v.25 no.5 pp. 1704-1716
- B horizons; alkanes; biogeochemistry; carbon; climate models; drainage; ecosystems; emissions; environmental factors; fen soils; gases; global warming; ketones; permafrost; radiative forcing; snowmelt; spring; summer; temperature; thawing; tundra; volatile organic compounds; wetlands; Arctic region
- ... Vast amounts of carbon are bound in both active layer and permafrost soils in the Arctic. As a consequence of climate warming, the depth of the active layer is increasing in size and permafrost soils are thawing. We hypothesize that pulses of biogenic volatile organic compounds are released from the near‐surface active layer during spring, and during late summer season from thawing permafrost, whi ...