Stable carbon isotope signatures of methane from a Finnish subarctic wetland
Methane emissions from Lompolojänkkä, a Finnish aapa mire within the Arctic Circle, were studied by non-intrusive Keeling plot methods, to place better constraints on the seasonal variations in isotopic signature of methane (δ13CCH4) emitted from Arctic wetland. Air...
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Stockholm University Press
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ftdoajarticles:oai:doaj.org/article:41da41e51e624be881e07a9c5ff00d16 2023-05-15T14:50:50+02:00 Stable carbon isotope signatures of methane from a Finnish subarctic wetland S. Sriskantharajah R. E. Fisher D. Lowry T. Aalto J. Hatakka M. Aurela T. Laurila A. Lohila E. Kuitunen E. G. Nisbet 2012-06-01T00:00:00Z https://doi.org/10.3402/tellusb.v64i0.18818 https://doaj.org/article/41da41e51e624be881e07a9c5ff00d16 EN eng Stockholm University Press http://www.tellusb.net/index.php/tellusb/article/view/18818/pdf_1 https://doaj.org/toc/0280-6509 https://doaj.org/toc/1600-0889 doi:10.3402/tellusb.v64i0.18818 0280-6509 1600-0889 https://doaj.org/article/41da41e51e624be881e07a9c5ff00d16 Tellus: Series B, Chemical and Physical Meteorology, Vol 64, Iss 0, Pp 1-8 (2012) Methane carbon isotopes Arctic wetland Finland greenhouse gas Meteorology. Climatology QC851-999 article 2012 ftdoajarticles https://doi.org/10.3402/tellusb.v64i0.18818 2022-12-30T23:54:13Z Methane emissions from Lompolojänkkä, a Finnish aapa mire within the Arctic Circle, were studied by non-intrusive Keeling plot methods, to place better constraints on the seasonal variations in isotopic signature of methane (δ13CCH4) emitted from Arctic wetland. Air samples were collected in Tedlar bags over the wetland at heights of 42 and 280 cm between May and October 2009 and in August 2008. The mixing ratio and δ13C of the methane in the samples were incorporated into Keeling plot analyses to derive bulk δ13CCH4 signatures for the methane inputs to the air above the wetland. The results show an unexpected consistence in δ13CCH4 from early to late summer, clustered around −68.5±0.7‰, but during spring thaw and autumnal freezing, δ13CCH4 is enriched by approximately 2 and 4‰, respectively. The techniques reported in this paper are simple and economical to employ, and give a bulk source signature for the methane inputs to the air above the entire wetland that can be extrapolated to a larger regional area. Article in Journal/Newspaper Arctic Subarctic Directory of Open Access Journals: DOAJ Articles Arctic Tellus B: Chemical and Physical Meteorology 64 1 18818 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Methane carbon isotopes Arctic wetland Finland greenhouse gas Meteorology. Climatology QC851-999 |
spellingShingle |
Methane carbon isotopes Arctic wetland Finland greenhouse gas Meteorology. Climatology QC851-999 S. Sriskantharajah R. E. Fisher D. Lowry T. Aalto J. Hatakka M. Aurela T. Laurila A. Lohila E. Kuitunen E. G. Nisbet Stable carbon isotope signatures of methane from a Finnish subarctic wetland |
topic_facet |
Methane carbon isotopes Arctic wetland Finland greenhouse gas Meteorology. Climatology QC851-999 |
description |
Methane emissions from Lompolojänkkä, a Finnish aapa mire within the Arctic Circle, were studied by non-intrusive Keeling plot methods, to place better constraints on the seasonal variations in isotopic signature of methane (δ13CCH4) emitted from Arctic wetland. Air samples were collected in Tedlar bags over the wetland at heights of 42 and 280 cm between May and October 2009 and in August 2008. The mixing ratio and δ13C of the methane in the samples were incorporated into Keeling plot analyses to derive bulk δ13CCH4 signatures for the methane inputs to the air above the wetland. The results show an unexpected consistence in δ13CCH4 from early to late summer, clustered around −68.5±0.7‰, but during spring thaw and autumnal freezing, δ13CCH4 is enriched by approximately 2 and 4‰, respectively. The techniques reported in this paper are simple and economical to employ, and give a bulk source signature for the methane inputs to the air above the entire wetland that can be extrapolated to a larger regional area. |
format |
Article in Journal/Newspaper |
author |
S. Sriskantharajah R. E. Fisher D. Lowry T. Aalto J. Hatakka M. Aurela T. Laurila A. Lohila E. Kuitunen E. G. Nisbet |
author_facet |
S. Sriskantharajah R. E. Fisher D. Lowry T. Aalto J. Hatakka M. Aurela T. Laurila A. Lohila E. Kuitunen E. G. Nisbet |
author_sort |
S. Sriskantharajah |
title |
Stable carbon isotope signatures of methane from a Finnish subarctic wetland |
title_short |
Stable carbon isotope signatures of methane from a Finnish subarctic wetland |
title_full |
Stable carbon isotope signatures of methane from a Finnish subarctic wetland |
title_fullStr |
Stable carbon isotope signatures of methane from a Finnish subarctic wetland |
title_full_unstemmed |
Stable carbon isotope signatures of methane from a Finnish subarctic wetland |
title_sort |
stable carbon isotope signatures of methane from a finnish subarctic wetland |
publisher |
Stockholm University Press |
publishDate |
2012 |
url |
https://doi.org/10.3402/tellusb.v64i0.18818 https://doaj.org/article/41da41e51e624be881e07a9c5ff00d16 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic |
genre_facet |
Arctic Subarctic |
op_source |
Tellus: Series B, Chemical and Physical Meteorology, Vol 64, Iss 0, Pp 1-8 (2012) |
op_relation |
http://www.tellusb.net/index.php/tellusb/article/view/18818/pdf_1 https://doaj.org/toc/0280-6509 https://doaj.org/toc/1600-0889 doi:10.3402/tellusb.v64i0.18818 0280-6509 1600-0889 https://doaj.org/article/41da41e51e624be881e07a9c5ff00d16 |
op_doi |
https://doi.org/10.3402/tellusb.v64i0.18818 |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
64 |
container_issue |
1 |
container_start_page |
18818 |
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1766321891191029760 |