The carbon budget of the northern cryosphere region

Mcguire, A. D.; Macdonald, R. W.; Schuur, E. A. G.; Harden, J. W.; Kuhry, P.; Hayes, D. J.; Christensen, T. R.; Heimann, M.

doi:10.1016/j.cosust.2010.05.003

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The carbon budget of the northern cryosphere region

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Heimann, M.
Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Mcguire, A. D., Macdonald, R. W., Schuur, E. A. G., Harden, J. W., Kuhry, P., Hayes, D. J., et al. (2010). The carbon budget of the northern cryosphere region. Current Opinion in Environmental Sustainability, 2(4), 231-236. doi:10.1016/j.cosust.2010.05.003.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-DA3B-C

Abstract

The northern cryosphere is undergoing substantial warming of permafrost and loss of sea ice. Release of stored carbon to the atmosphere in response to this change has the potential to affect the global climate system. Studies indicate that the northern cryosphere has been not only a substantial sink for atmospheric CO₂ in recent decades, but also an important source of CH₄ because of emissions from wetlands and lakes. Analyses suggest that the sensitivity of the carbon cycle of the region over the 21st Century is potentially large, but highly uncertain because numerous pathways of response will be affected by warming. Further research should focus on sensitive elements of the carbon cycle such as the consequences of increased fire disturbance, permafrost degradation, and sea ice loss in the northern cryosphere region.