Long-term CO2 production following permafrost thaw
Thawing permafrost represents a poorly understood feedback mechanism of climate change in the Arctic, but with a potential impact owing to stored carbon being mobilized1–5. We have quantified the long-term loss of carbon (C) from thawing permafrost in Northeast Greenland from 1996 to 2008 by combini...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.640.5087 2023-05-15T13:03:02+02:00 Long-term CO2 production following permafrost thaw Bo Elberling Anders Michelsen Christina Schädel Edward A. G. Schuur Hanne H. Christiansen Louise Berg Mikkel P. Tamstorf Charlotte Sigsgaard The Pennsylvania State University CiteSeerX Archives 2013 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.640.5087 http://www.lter.uaf.edu/pdf/eberling_Michelsen_2013.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.640.5087 http://www.lter.uaf.edu/pdf/eberling_Michelsen_2013.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.lter.uaf.edu/pdf/eberling_Michelsen_2013.pdf text 2013 ftciteseerx 2016-01-08T15:56:18Z Thawing permafrost represents a poorly understood feedback mechanism of climate change in the Arctic, but with a potential impact owing to stored carbon being mobilized1–5. We have quantified the long-term loss of carbon (C) from thawing permafrost in Northeast Greenland from 1996 to 2008 by combining repeated sediment sampling to assess changes in C stock and>12 years of CO2 production in incubated permafrost samples. Field observations show that the active-layer thickness has increased by>1 cm yr−1 but thawing has not resulted in a detectable decline in C stocks. Laboratory mineralization rates at 5 ◦C resulted in a C loss between 9 and 75%, depending on drainage, highlighting the potential of fast mobilization of permafrost C under aerobic conditions, but also that C at near-saturated conditions may remain largely immobilized over decades. This is confirmed by a three-pool C Text Active layer thickness Arctic Climate change Greenland permafrost Unknown Arctic Greenland |
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ftciteseerx |
language |
English |
description |
Thawing permafrost represents a poorly understood feedback mechanism of climate change in the Arctic, but with a potential impact owing to stored carbon being mobilized1–5. We have quantified the long-term loss of carbon (C) from thawing permafrost in Northeast Greenland from 1996 to 2008 by combining repeated sediment sampling to assess changes in C stock and>12 years of CO2 production in incubated permafrost samples. Field observations show that the active-layer thickness has increased by>1 cm yr−1 but thawing has not resulted in a detectable decline in C stocks. Laboratory mineralization rates at 5 ◦C resulted in a C loss between 9 and 75%, depending on drainage, highlighting the potential of fast mobilization of permafrost C under aerobic conditions, but also that C at near-saturated conditions may remain largely immobilized over decades. This is confirmed by a three-pool C |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Bo Elberling Anders Michelsen Christina Schädel Edward A. G. Schuur Hanne H. Christiansen Louise Berg Mikkel P. Tamstorf Charlotte Sigsgaard |
spellingShingle |
Bo Elberling Anders Michelsen Christina Schädel Edward A. G. Schuur Hanne H. Christiansen Louise Berg Mikkel P. Tamstorf Charlotte Sigsgaard Long-term CO2 production following permafrost thaw |
author_facet |
Bo Elberling Anders Michelsen Christina Schädel Edward A. G. Schuur Hanne H. Christiansen Louise Berg Mikkel P. Tamstorf Charlotte Sigsgaard |
author_sort |
Bo Elberling |
title |
Long-term CO2 production following permafrost thaw |
title_short |
Long-term CO2 production following permafrost thaw |
title_full |
Long-term CO2 production following permafrost thaw |
title_fullStr |
Long-term CO2 production following permafrost thaw |
title_full_unstemmed |
Long-term CO2 production following permafrost thaw |
title_sort |
long-term co2 production following permafrost thaw |
publishDate |
2013 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.640.5087 http://www.lter.uaf.edu/pdf/eberling_Michelsen_2013.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Active layer thickness Arctic Climate change Greenland permafrost |
genre_facet |
Active layer thickness Arctic Climate change Greenland permafrost |
op_source |
http://www.lter.uaf.edu/pdf/eberling_Michelsen_2013.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.640.5087 http://www.lter.uaf.edu/pdf/eberling_Michelsen_2013.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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