The Deep Permafrost Carbon Pool of Siberia and Alaska
An estimation of the carbon stored in Arctic permafrost and its biogeochemical characteristics are essential topics in today’s permafrost research. While the uppermost cryosoil horizons are well-studied and recorded in the Northern Circumpolar Soil Carbon Database (NCSCD), there are large uncertaint...
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ftawi:oai:epic.awi.de:34588 2024-09-15T18:11:26+00:00 The Deep Permafrost Carbon Pool of Siberia and Alaska Strauss, Jens Schirrmeister, Lutz Grosse, Guido Wetterich, Sebastian Ulrich, Mathias Herzschuh, Ulrike Hubberten, Hans-Wolfgang 2013-12-09 https://epic.awi.de/id/eprint/34588/ https://hdl.handle.net/10013/epic.42802 unknown Strauss, J. orcid:0000-0003-4678-4982 , Schirrmeister, L. orcid:0000-0001-9455-0596 , Grosse, G. orcid:0000-0001-5895-2141 , Wetterich, S. orcid:0000-0001-9234-1192 , Ulrich, M. , Herzschuh, U. orcid:0000-0003-0999-1261 and Hubberten, H. W. (2013) The Deep Permafrost Carbon Pool of Siberia and Alaska , AGU Fall Meeting 2013, San Francisco, USA, 9 December 2013 - 13 December 2013 . hdl:10013/epic.42802 EPIC3AGU Fall Meeting 2013, San Francisco, USA, 2013-12-09-2013-12-13 Conference notRev 2013 ftawi 2024-06-24T04:08:32Z An estimation of the carbon stored in Arctic permafrost and its biogeochemical characteristics are essential topics in today’s permafrost research. While the uppermost cryosoil horizons are well-studied and recorded in the Northern Circumpolar Soil Carbon Database (NCSCD), there are large uncertainties concerning the quantity and distribution of permafrost deep organic carbon. We studied the organic carbon content of the Yedoma region, where substantial quantities of organic carbon are sequestered. This region is unique because of its organic carbon, which was deeply incorporated into permafrost during the late Quaternary. Rapid inclusion of labile organic matter into permafrost halted decomposition and resulted in a deep long-term carbon sink. Organic carbon in the Yedoma region occurs manly as peat inclusions, twigs and root fragments, other solid plant remains, and finely distributed plant detritus, but also as fossil mammal remains, insects, plankton and soil microorganisms, and finally its decomposition and metabolic products in terms of particulate and dissolved organic matter. With our study we show that two major sub-reservoirs compose the Yedoma region deep frozen organic carbon; Yedoma deposits (late Pleistocene ice- and organic-rich silty sediments) and deposits formed in thaw-lake basins (generalised as thermokarst deposits). Thaw-lake basins result when lake formation degrades Yedoma deposits, then the lakes drain and deposits refreeze. Therefore, the deep Yedoma region organic carbon pool is far from homogeneous and strongly linked to depositional and permafrost dynamics as well as the ecological and climatic history. There are significant differences to former estimates of the Yedoma coverage area, thickness of the relevant frozen deposits, ground ice content and finally in organic carbon content that lead to a reassessment of the deep permafrost carbon pools of the northern high latitude Yedoma region. Using a dataset of approximately 1000 frozen samples from 23 Siberian and Alaskan study sites, ... Conference Object Ice permafrost Thermokarst Alaska Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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unknown |
description |
An estimation of the carbon stored in Arctic permafrost and its biogeochemical characteristics are essential topics in today’s permafrost research. While the uppermost cryosoil horizons are well-studied and recorded in the Northern Circumpolar Soil Carbon Database (NCSCD), there are large uncertainties concerning the quantity and distribution of permafrost deep organic carbon. We studied the organic carbon content of the Yedoma region, where substantial quantities of organic carbon are sequestered. This region is unique because of its organic carbon, which was deeply incorporated into permafrost during the late Quaternary. Rapid inclusion of labile organic matter into permafrost halted decomposition and resulted in a deep long-term carbon sink. Organic carbon in the Yedoma region occurs manly as peat inclusions, twigs and root fragments, other solid plant remains, and finely distributed plant detritus, but also as fossil mammal remains, insects, plankton and soil microorganisms, and finally its decomposition and metabolic products in terms of particulate and dissolved organic matter. With our study we show that two major sub-reservoirs compose the Yedoma region deep frozen organic carbon; Yedoma deposits (late Pleistocene ice- and organic-rich silty sediments) and deposits formed in thaw-lake basins (generalised as thermokarst deposits). Thaw-lake basins result when lake formation degrades Yedoma deposits, then the lakes drain and deposits refreeze. Therefore, the deep Yedoma region organic carbon pool is far from homogeneous and strongly linked to depositional and permafrost dynamics as well as the ecological and climatic history. There are significant differences to former estimates of the Yedoma coverage area, thickness of the relevant frozen deposits, ground ice content and finally in organic carbon content that lead to a reassessment of the deep permafrost carbon pools of the northern high latitude Yedoma region. Using a dataset of approximately 1000 frozen samples from 23 Siberian and Alaskan study sites, ... |
format |
Conference Object |
author |
Strauss, Jens Schirrmeister, Lutz Grosse, Guido Wetterich, Sebastian Ulrich, Mathias Herzschuh, Ulrike Hubberten, Hans-Wolfgang |
spellingShingle |
Strauss, Jens Schirrmeister, Lutz Grosse, Guido Wetterich, Sebastian Ulrich, Mathias Herzschuh, Ulrike Hubberten, Hans-Wolfgang The Deep Permafrost Carbon Pool of Siberia and Alaska |
author_facet |
Strauss, Jens Schirrmeister, Lutz Grosse, Guido Wetterich, Sebastian Ulrich, Mathias Herzschuh, Ulrike Hubberten, Hans-Wolfgang |
author_sort |
Strauss, Jens |
title |
The Deep Permafrost Carbon Pool of Siberia and Alaska |
title_short |
The Deep Permafrost Carbon Pool of Siberia and Alaska |
title_full |
The Deep Permafrost Carbon Pool of Siberia and Alaska |
title_fullStr |
The Deep Permafrost Carbon Pool of Siberia and Alaska |
title_full_unstemmed |
The Deep Permafrost Carbon Pool of Siberia and Alaska |
title_sort |
deep permafrost carbon pool of siberia and alaska |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/34588/ https://hdl.handle.net/10013/epic.42802 |
genre |
Ice permafrost Thermokarst Alaska Siberia |
genre_facet |
Ice permafrost Thermokarst Alaska Siberia |
op_source |
EPIC3AGU Fall Meeting 2013, San Francisco, USA, 2013-12-09-2013-12-13 |
op_relation |
Strauss, J. orcid:0000-0003-4678-4982 , Schirrmeister, L. orcid:0000-0001-9455-0596 , Grosse, G. orcid:0000-0001-5895-2141 , Wetterich, S. orcid:0000-0001-9234-1192 , Ulrich, M. , Herzschuh, U. orcid:0000-0003-0999-1261 and Hubberten, H. W. (2013) The Deep Permafrost Carbon Pool of Siberia and Alaska , AGU Fall Meeting 2013, San Francisco, USA, 9 December 2013 - 13 December 2013 . hdl:10013/epic.42802 |
_version_ |
1810449033478537216 |