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Factors controlling large scale variations in methane emissions from wetlands
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2003 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 30, no 7Article in journal (Refereed) Published
Abstract [en]

[1] Global wetlands are, at estimate ranging 115-237 Tg CH4/yr, the largest single atmospheric source of the greenhouse gas methane (CH4). We present a dataset on CH4 flux rates totaling 12 measurement years at sites from Greenland, Iceland, Scandinavia and Siberia. We find that temperature and microbial substrate availability (expressed as the organic acid concentration in peat water) combined explain almost 100% of the variations in mean annual CH4 emissions. The temperature sensitivity of the CH4 emissions shown suggests a feedback mechanism on climate change that could validate incorporation in further developments of global circulation models.

Place, publisher, year, edition, pages
2003. Vol. 30, no 7
National Category
Social Sciences
URN: urn:nbn:se:liu:diva-47807DOI: 10.1029/2002L016848OAI: diva2:268703
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2010-04-28Bibliographically approved

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Svensson, Bo
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Department of Water and Environmental StudiesFaculty of Arts and Sciences
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