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Climate-forced changes in available energy and methane bubbling from subarctic lakes
Responsible organisation
2015 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 42, no 6, 1936-1942 p.Article in journal (Refereed) Published
Abstract [en]

Strong correlations between seasonal energy input and methane (CH4) bubbling (ebullition) in northern lakes suggest that energy proxies might provide a constraint on the magnitude of future CH4 emissions. Ebullition is a major pathway for transporting anaerobically produced CH4 from lake sediments to the atmosphere and represents a large unquantified CH4 source. In high-latitude, postglacial lakes during the ice-free season, solar shortwave energy input can constrain CH4 productivity via control of sediment temperature. Utilizing long-term climatic predictors, we calculate CH4 ebullition from three subarctic lakes in northern Sweden over the period of 1916–2079. Using observed energy trends, the seasonal average lake CH4 ebullition is predicted to increase by 80% between the 1916–1926 decade and the 2040–2079 period. Present-day seasonal average methane ebullition is estimated to have already increased 24% since the 1916–1926 decade.

Place, publisher, year, edition, pages
2015. Vol. 42, no 6, 1936-1942 p.
Keyword [en]
Biosphere/atmosphere interactions, Permafrost, cryosphere, and high-latitude processes, Diel, seasonal, and annual cycles, Limnology, Lakes, methane, subarctic, lakes, Stordalen, Abisko, shortwave
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3552DOI: 10.1002/2015GL063189OAI: oai:DiVA.org:polar-3552DiVA: diva2:1096902
Available from: 2017-05-19 Created: 2017-05-19 Last updated: 2017-05-19

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Publisher's full texthttp://dx.doi.org/10.1002/2015GL063189
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf