Journal
CURRENT OPINION IN ENVIRONMENTAL SUSTAINABILITY
Volume 2, Issue 4, Pages 231-236Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cosust.2010.05.003
Keywords
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Funding
- National Science Foundation
- International Arctic Research Center at the University of Alaska Fairbanks
- Office of Polar Programs (OPP) [0806271] Funding Source: National Science Foundation
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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.
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