Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle
<jats:title>Abstract</jats:title><jats:p>The changes in atmospheric <jats:italic>p</jats:italic>CO<jats:sub>2</jats:sub> provide evidence for the release of large amounts of ancient carbon during the last deglaciation. However, the sources and mechanisms tha...
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2022
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ftawi:oai:epic.awi.de:57562 2024-09-15T17:51:43+00:00 Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle Wu, Junjie Mollenhauer, Gesine Stein, Ruediger Köhler, Peter Hefter, Jens Fahl, Kirsten Grotheer, Hendrik Wei, Bingbing Nam, Seung-Il 2022-11-22 application/pdf https://epic.awi.de/id/eprint/57562/ https://epic.awi.de/id/eprint/57562/1/wu2022nc.pdf https://hdl.handle.net/10013/epic.a8aa41bc-aa09-4a23-95fc-44e8a4485bd9 unknown Springer Science and Business Media LLC https://epic.awi.de/id/eprint/57562/1/wu2022nc.pdf Wu, J. , Mollenhauer, G. orcid:0000-0001-5138-564X , Stein, R. , Köhler, P. orcid:0000-0003-0904-8484 , Hefter, J. orcid:0000-0002-5823-1966 , Fahl, K. orcid:0000-0001-9317-4656 , Grotheer, H. orcid:0000-0002-5204-3681 , Wei, B. and Nam, S. I. (2022) Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle , Nature Communications, 13 (1), p. 7172 . doi:10.1038/s41467-022-34725-4 <https://doi.org/10.1038/s41467-022-34725-4> , hdl:10013/epic.a8aa41bc-aa09-4a23-95fc-44e8a4485bd9 EPIC3Nature Communications, Springer Science and Business Media LLC, 13(1), pp. 7172-7172, ISSN: 2041-1723 Article isiRev 2022 ftawi https://doi.org/10.1038/s41467-022-34725-4 2024-06-24T04:30:12Z <jats:title>Abstract</jats:title><jats:p>The changes in atmospheric <jats:italic>p</jats:italic>CO<jats:sub>2</jats:sub> provide evidence for the release of large amounts of ancient carbon during the last deglaciation. However, the sources and mechanisms that contributed to this process remain unresolved. Here, we present evidence for substantial ancient terrestrial carbon remobilization in the Canadian Arctic following the Laurentide Ice Sheet retreat. Glacial-retreat-induced physical erosion of bedrock has mobilized petrogenic carbon, as revealed by sedimentary records of radiocarbon dates and thermal maturity of organic carbon from the Canadian Beaufort Sea. Additionally, coastal erosion during the meltwater pulses 1a and 1b has remobilized pre-aged carbon from permafrost. Assuming extensive petrogenic organic carbon oxidation during the glacial retreat, a model-based assessment suggests that the combined processes have contributed 12 ppm to the deglacial CO<jats:sub>2</jats:sub> rise. Our findings suggest potentially positive climate feedback of ice-sheet retreat by accelerating terrestrial organic carbon remobilization and subsequent oxidation during the glacial-interglacial transition.</jats:p> Article in Journal/Newspaper Arctic Beaufort Sea Ice Ice Sheet permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Nature Communications 13 1 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
<jats:title>Abstract</jats:title><jats:p>The changes in atmospheric <jats:italic>p</jats:italic>CO<jats:sub>2</jats:sub> provide evidence for the release of large amounts of ancient carbon during the last deglaciation. However, the sources and mechanisms that contributed to this process remain unresolved. Here, we present evidence for substantial ancient terrestrial carbon remobilization in the Canadian Arctic following the Laurentide Ice Sheet retreat. Glacial-retreat-induced physical erosion of bedrock has mobilized petrogenic carbon, as revealed by sedimentary records of radiocarbon dates and thermal maturity of organic carbon from the Canadian Beaufort Sea. Additionally, coastal erosion during the meltwater pulses 1a and 1b has remobilized pre-aged carbon from permafrost. Assuming extensive petrogenic organic carbon oxidation during the glacial retreat, a model-based assessment suggests that the combined processes have contributed 12 ppm to the deglacial CO<jats:sub>2</jats:sub> rise. Our findings suggest potentially positive climate feedback of ice-sheet retreat by accelerating terrestrial organic carbon remobilization and subsequent oxidation during the glacial-interglacial transition.</jats:p> |
format |
Article in Journal/Newspaper |
author |
Wu, Junjie Mollenhauer, Gesine Stein, Ruediger Köhler, Peter Hefter, Jens Fahl, Kirsten Grotheer, Hendrik Wei, Bingbing Nam, Seung-Il |
spellingShingle |
Wu, Junjie Mollenhauer, Gesine Stein, Ruediger Köhler, Peter Hefter, Jens Fahl, Kirsten Grotheer, Hendrik Wei, Bingbing Nam, Seung-Il Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle |
author_facet |
Wu, Junjie Mollenhauer, Gesine Stein, Ruediger Köhler, Peter Hefter, Jens Fahl, Kirsten Grotheer, Hendrik Wei, Bingbing Nam, Seung-Il |
author_sort |
Wu, Junjie |
title |
Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle |
title_short |
Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle |
title_full |
Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle |
title_fullStr |
Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle |
title_full_unstemmed |
Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle |
title_sort |
deglacial release of petrogenic and permafrost carbon from the canadian arctic impacting the carbon cycle |
publisher |
Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/57562/ https://epic.awi.de/id/eprint/57562/1/wu2022nc.pdf https://hdl.handle.net/10013/epic.a8aa41bc-aa09-4a23-95fc-44e8a4485bd9 |
genre |
Arctic Beaufort Sea Ice Ice Sheet permafrost |
genre_facet |
Arctic Beaufort Sea Ice Ice Sheet permafrost |
op_source |
EPIC3Nature Communications, Springer Science and Business Media LLC, 13(1), pp. 7172-7172, ISSN: 2041-1723 |
op_relation |
https://epic.awi.de/id/eprint/57562/1/wu2022nc.pdf Wu, J. , Mollenhauer, G. orcid:0000-0001-5138-564X , Stein, R. , Köhler, P. orcid:0000-0003-0904-8484 , Hefter, J. orcid:0000-0002-5823-1966 , Fahl, K. orcid:0000-0001-9317-4656 , Grotheer, H. orcid:0000-0002-5204-3681 , Wei, B. and Nam, S. I. (2022) Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle , Nature Communications, 13 (1), p. 7172 . doi:10.1038/s41467-022-34725-4 <https://doi.org/10.1038/s41467-022-34725-4> , hdl:10013/epic.a8aa41bc-aa09-4a23-95fc-44e8a4485bd9 |
op_doi |
https://doi.org/10.1038/s41467-022-34725-4 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1810293710075723776 |