Volume 12, issue 11 | Copyright
Biogeosciences, 12, 3469-3488, 2015
https://doi.org/10.5194/bg-12-3469-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 05 Jun 2015

Research article | 05 Jun 2015

Observation-based modelling of permafrost carbon fluxes with accounting for deep carbon deposits and thermokarst activity

T. Schneider von Deimling et al.
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Cited articles
Abnizova, A., Siemens, J., Langer, M., and Boike, J.: Small ponds with major impact: The relevance of ponds and lakes in permafrost landscapes to carbon dioxide emissions, Global Biogeochem. Cy., 26, GB2041, https://doi.org/10.1029/2011GB004237, 2012.
Arp, C. D., Jones, B. M., Lu, Z., and Whitman, M. S.: Shifting balance of thermokarst lake ice regimes across the Arctic Coastal Plain of northern Alaska, Geophys. Res. Lett., 39, L16503, https://doi.org/10.1029/2012GL052518, 2012.
Avis, C. A., Weaver, A. J., and Meissner, K. J.: Reduction in areal extent of high-latitude wetlands in response to permafrost thaw, Nature Geosci, 4, 444–448, 2011.
Beer, C., Fedorov, A. N., and Torgovkin, Y.: Permafrost temperature and active-layer thickness of Yakutia with 0.5-degree spatial resolution for model evaluation, Earth Syst. Sci. Data, 5, 305–310, https://doi.org/10.5194/essd-5-305-2013, 2013.
Boike, J., Langer, M., Lantuit, H., Muster, S., Roth, K., Sachs, T., Overduin, P., Westermann, S., and McGuire, A. D.: Permafrost – Physical Aspects, Carbon Cycling, Databases and Uncertainties, in: Recarbonization of the Biosphere, edited by: Lal, R., Lorenz, K., Hüttl, R. F., Schneider, B. U., and von Braun, J., Springer Netherlands, 159–185, 2012.
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Short summary
We have modelled the carbon release from thawing permafrost soils under various scenarios of future warming. Our results suggests that up to about 140Pg of carbon could be released under strong warming by end of the century. We have shown that abrupt thaw processes under thermokarst lakes can unlock large amounts of perennially frozen carbon stored in deep deposits (which extend many metres into the soil).
We have modelled the carbon release from thawing permafrost soils under various scenarios of...
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