Articles | Volume 14, issue 19
https://doi.org/10.5194/bg-14-4467-2017
https://doi.org/10.5194/bg-14-4467-2017
Research article
 | 
11 Oct 2017
Research article |  | 11 Oct 2017

Exchange of CO2 in Arctic tundra: impacts of meteorological variations and biological disturbance

Efrén López-Blanco, Magnus Lund, Mathew Williams, Mikkel P. Tamstorf, Andreas Westergaard-Nielsen, Jean-François Exbrayat, Birger U. Hansen, and Torben R. Christensen

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Cited articles

ACIA: Arctic Climate Impact Assessment, Cambridge University Press, New York, 1042 pp., 2005.
Åkerman, H. J. and Johansson, M.: Thawing permafrost and thicker active layers in sub-arctic Sweden, Permafrost Periglac., 19, 279–292, https://doi.org/10.1002/ppp.626, 2008.
AMAP: Snow, Water, Ice and Permafrost in the Arctic (SWIPA), Oslo, Norway, 2011.
Arndal, M. F., Illeris, L., Michelsen, A., Albert, K., Tamstorf, M., and Hansen, B. U.: Seasonal Variation in Gross Ecosystem Production, Plant Biomass, and Carbon and Nitrogen Pools in Five High Arctic Vegetation Types, Arct. Antarct. Alp. Res., 41, 164–173, https://doi.org/10.1657/1938-4246-41.2.164, 2009.
Aurela, M., Laurila, T., and Tuovinen, J.-P.: Annual CO2 balance of a subarctic fen in northern Europe: importance of the wintertime efflux, J. Geophys. Res.-Atmos., 107, ACH 17-11–ACH 17-12, https://doi.org/10.1029/2002JD002055, 2002.
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Short summary
An improvement in our process-based understanding of CO2 exchanges in the Arctic and their climate sensitivity is critical. With continued warming temperatures and longer growing seasons, tundra systems will likely increase rates of C cycling, although shifts in sink strength could take place, challenging the forecast of upcoming C states. In this context, we investigated the functional responses of C exchange to environmental characteristics across 8 consecutive years in West Greenland.
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