Methane emissions from a high arctic valley: findings and challenges
Wet tundra ecosystems are well-known to be a significant source of atmospheric methane. With the predicted stronger effect of global climate change on arctic terrestrial ecosystems compared to lower-latitudes, there is a special obligation to study the natural diversity and the range of possible fee...
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American Geophysical Union
2008
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ftuniaarhuspubl:oai:pure.atira.dk:publications/df83d400-cb4a-11dd-9710-000ea68e967b 2024-04-21T07:53:58+00:00 Methane emissions from a high arctic valley: findings and challenges Mastepanov, Mikhail Sigsgaard, Charlotte Ström, Lena Tagesson, Torbern Tamstorf, Mikkel Peter Christensen, Torben R. 2008 https://pure.au.dk/portal/en/publications/df83d400-cb4a-11dd-9710-000ea68e967b http://adsabs.harvard.edu//abs/2008AGUFM.B24A.06M eng eng American Geophysical Union https://pure.au.dk/portal/en/publications/df83d400-cb4a-11dd-9710-000ea68e967b info:eu-repo/semantics/restrictedAccess Mastepanov , M , Sigsgaard , C , Ström , L , Tagesson , T , Tamstorf , M P & Christensen , T R 2008 , Methane emissions from a high arctic valley: findings and challenges . in American Geophysical Union, Fall Meeting 2008 . vol. 89 , American Geophysical Union , American Geophysical Union, Fall Meeting 2008 , San Francisco , United States , 16/12/2008 . < http://adsabs.harvard.edu//abs/2008AGUFM.B24A.06M > metan Arktis tundra kær methane burst Arctic tundra wetland conferenceObject 2008 ftuniaarhuspubl 2024-03-28T00:37:21Z Wet tundra ecosystems are well-known to be a significant source of atmospheric methane. With the predicted stronger effect of global climate change on arctic terrestrial ecosystems compared to lower-latitudes, there is a special obligation to study the natural diversity and the range of possible feedback effects on global climate that could arise from Arctic tundra ecosystems. One of the prime candidates for such a feedback mechanism is a potential change in the emissions of methane. Long-term datasets on methane emissions from high arctic sites are almost non-existing but badly needed for analyses of controls on interannual and seasonal variations in emissions. To help fill this gap we initiated a measurement program in a productive high arctic fen in the Zackenberg valley, NE Greenland. Methane flux measurements have been carried out at the same location since 1997. Compared with the manual chamber measurements from the late 1990s, however, an automatic chambers system with laser off- axis integrated-cavity output spectroscopy analyzer, in place since 2005, dramatically increased the time resolution of more recent data. The latest data brought up some intriguing findings on seasonal variations in methane fluxes which will be presented and discussed. Conference Object Arctic Arktis Arktis* Climate change Greenland Tundra Zackenberg Aarhus University: Research |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
topic |
metan Arktis tundra kær methane burst Arctic tundra wetland |
spellingShingle |
metan Arktis tundra kær methane burst Arctic tundra wetland Mastepanov, Mikhail Sigsgaard, Charlotte Ström, Lena Tagesson, Torbern Tamstorf, Mikkel Peter Christensen, Torben R. Methane emissions from a high arctic valley: findings and challenges |
topic_facet |
metan Arktis tundra kær methane burst Arctic tundra wetland |
description |
Wet tundra ecosystems are well-known to be a significant source of atmospheric methane. With the predicted stronger effect of global climate change on arctic terrestrial ecosystems compared to lower-latitudes, there is a special obligation to study the natural diversity and the range of possible feedback effects on global climate that could arise from Arctic tundra ecosystems. One of the prime candidates for such a feedback mechanism is a potential change in the emissions of methane. Long-term datasets on methane emissions from high arctic sites are almost non-existing but badly needed for analyses of controls on interannual and seasonal variations in emissions. To help fill this gap we initiated a measurement program in a productive high arctic fen in the Zackenberg valley, NE Greenland. Methane flux measurements have been carried out at the same location since 1997. Compared with the manual chamber measurements from the late 1990s, however, an automatic chambers system with laser off- axis integrated-cavity output spectroscopy analyzer, in place since 2005, dramatically increased the time resolution of more recent data. The latest data brought up some intriguing findings on seasonal variations in methane fluxes which will be presented and discussed. |
format |
Conference Object |
author |
Mastepanov, Mikhail Sigsgaard, Charlotte Ström, Lena Tagesson, Torbern Tamstorf, Mikkel Peter Christensen, Torben R. |
author_facet |
Mastepanov, Mikhail Sigsgaard, Charlotte Ström, Lena Tagesson, Torbern Tamstorf, Mikkel Peter Christensen, Torben R. |
author_sort |
Mastepanov, Mikhail |
title |
Methane emissions from a high arctic valley: findings and challenges |
title_short |
Methane emissions from a high arctic valley: findings and challenges |
title_full |
Methane emissions from a high arctic valley: findings and challenges |
title_fullStr |
Methane emissions from a high arctic valley: findings and challenges |
title_full_unstemmed |
Methane emissions from a high arctic valley: findings and challenges |
title_sort |
methane emissions from a high arctic valley: findings and challenges |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://pure.au.dk/portal/en/publications/df83d400-cb4a-11dd-9710-000ea68e967b http://adsabs.harvard.edu//abs/2008AGUFM.B24A.06M |
genre |
Arctic Arktis Arktis* Climate change Greenland Tundra Zackenberg |
genre_facet |
Arctic Arktis Arktis* Climate change Greenland Tundra Zackenberg |
op_source |
Mastepanov , M , Sigsgaard , C , Ström , L , Tagesson , T , Tamstorf , M P & Christensen , T R 2008 , Methane emissions from a high arctic valley: findings and challenges . in American Geophysical Union, Fall Meeting 2008 . vol. 89 , American Geophysical Union , American Geophysical Union, Fall Meeting 2008 , San Francisco , United States , 16/12/2008 . < http://adsabs.harvard.edu//abs/2008AGUFM.B24A.06M > |
op_relation |
https://pure.au.dk/portal/en/publications/df83d400-cb4a-11dd-9710-000ea68e967b |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1796936810411065344 |