Articles | Volume 18, issue 23
Biogeosciences, 18, 6093–6114, 2021
https://doi.org/10.5194/bg-18-6093-2021
Biogeosciences, 18, 6093–6114, 2021
https://doi.org/10.5194/bg-18-6093-2021

Research article 29 Nov 2021

Research article | 29 Nov 2021

Methane in Zackenberg Valley, NE Greenland: multidecadal growing season fluxes of a high-Arctic tundra

Johan H. Scheller et al.

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Cited articles

Abermann, J., Hansen, B., Lund, M., Wacker, S., Karami, M., and Cappelen, J.: Hotspots and key periods of Greenland climate change during the past six decades, Ambio, 46, 3–11, https://doi.org/10.1007/s13280-016-0861-y, 2017. 
AMAP: AMAP assessment 2015: Methane as an Arctic climate forcer, Arctic Monitoring and Assessment Programme (AMAP), Oslo, Norway, Oslo, Norway, 152 pp., 2015. 
AMAP: Snow, Water and Permafrost in the Arctic (SWIPA) 2017, Oslo, Norway, 269 pp., 2017. 
Andresen, C. G., Lara, M. J., Tweedie, C. E., and Lougheed, V. L.: Rising plant-mediated methane emissions from arctic wetlands, Glob. Change Biol., 23, 1128–1139, https://doi.org/10.1111/gcb.13469, 2017. 
Bartlett, K. B., Crill, P. M., Sass, R. L., Harriss, R. C., and Dise, N. B.: Methane emissions from tundra environments in the Yukon-Kuskokwim delta, Alaska, J. Geophys. Res., 97, 16645–16660, https://doi.org/10.1029/91jd00610, 1992. 
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Short summary
Our study presents a time series of methane emissions in a high-Arctic-tundra landscape over 14 summers, which shows large variations between years. The methane emissions from the valley are expected to more than double in the late 21st century. This warming increases permafrost thaw, which could increase surface erosion in the valley. Increased erosion could offset some of the rise in methane fluxes from the valley, but this would require large-scale impacts on vegetated surfaces.
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