Rapid CO2 release from eroding permafrost in seawater
Permafrost is thawing extensively due to climate warming. When permafrost thaws, previously frozen organic carbon (OC) is converted into carbon dioxide (CO2) or methane, leading to further warming. This process is included in models as gradual deepening of the seasonal non‐frozen layer. Yet, models...
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Online Access: | https://epic.awi.de/id/eprint/50485/ https://epic.awi.de/id/eprint/50485/1/Tanski_et_al_2019_Geophysical_Research_Letters.pdf https://hdl.handle.net/10013/epic.e192d32a-a286-406d-9a0c-bf98d45c9224 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:50485 2023-05-15T14:54:00+02:00 Rapid CO2 release from eroding permafrost in seawater Tanski, George Wagner, Dirk Knoblauch, Christian Fritz, Michael Sachs, Torsten Lantuit, Hugues 2019-10-15 application/pdf https://epic.awi.de/id/eprint/50485/ https://epic.awi.de/id/eprint/50485/1/Tanski_et_al_2019_Geophysical_Research_Letters.pdf https://hdl.handle.net/10013/epic.e192d32a-a286-406d-9a0c-bf98d45c9224 https://hdl.handle.net/ unknown Wiley https://epic.awi.de/id/eprint/50485/1/Tanski_et_al_2019_Geophysical_Research_Letters.pdf https://hdl.handle.net/ Tanski, G. orcid:0000-0002-2992-2071 , Wagner, D. orcid:0000-0001-5064-497X , Knoblauch, C. orcid:0000-0002-7147-1008 , Fritz, M. orcid:0000-0003-4591-7325 , Sachs, T. orcid:0000-0002-9959-4771 and Lantuit, H. orcid:0000-0003-1497-6760 (2019) Rapid CO2 release from eroding permafrost in seawater , Geophysical Research Letters, 46 . doi:10.1029/2019gl084303 <https://doi.org/10.1029/2019gl084303> , hdl:10013/epic.e192d32a-a286-406d-9a0c-bf98d45c9224 info:eu-repo/semantics/openAccess EPIC3Geophysical Research Letters, Wiley, 46, ISSN: 0094-8276 Article NonPeerReviewed info:eu-repo/semantics/article 2019 ftawi https://doi.org/10.1029/2019gl084303 2022-08-14T23:12:30Z Permafrost is thawing extensively due to climate warming. When permafrost thaws, previously frozen organic carbon (OC) is converted into carbon dioxide (CO2) or methane, leading to further warming. This process is included in models as gradual deepening of the seasonal non‐frozen layer. Yet, models neglect abrupt OC mobilization along rapidly eroding Arctic coastlines. We mimicked erosion in an experiment by incubating permafrost with seawater for an average Arctic open‐water season. We found that CO2 production from permafrost OC is as efficient in seawater as without. For each gram (dry weight) of eroding permafrost, up to 4.3 ± 1.0 mg CO2 will be released and 6.2 ± 1.2% of initial OC mineralized at 4 °C. Our results indicate that potentially large amounts of CO2 are produced along eroding permafrost coastlines, onshore and within nearshore waters. We conclude that coastal erosion could play an important role in carbon cycling and the climate system. Article in Journal/Newspaper Arctic permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Geophysical Research Letters 46 20 11244 11252 |
institution |
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 |
Permafrost is thawing extensively due to climate warming. When permafrost thaws, previously frozen organic carbon (OC) is converted into carbon dioxide (CO2) or methane, leading to further warming. This process is included in models as gradual deepening of the seasonal non‐frozen layer. Yet, models neglect abrupt OC mobilization along rapidly eroding Arctic coastlines. We mimicked erosion in an experiment by incubating permafrost with seawater for an average Arctic open‐water season. We found that CO2 production from permafrost OC is as efficient in seawater as without. For each gram (dry weight) of eroding permafrost, up to 4.3 ± 1.0 mg CO2 will be released and 6.2 ± 1.2% of initial OC mineralized at 4 °C. Our results indicate that potentially large amounts of CO2 are produced along eroding permafrost coastlines, onshore and within nearshore waters. We conclude that coastal erosion could play an important role in carbon cycling and the climate system. |
format |
Article in Journal/Newspaper |
author |
Tanski, George Wagner, Dirk Knoblauch, Christian Fritz, Michael Sachs, Torsten Lantuit, Hugues |
spellingShingle |
Tanski, George Wagner, Dirk Knoblauch, Christian Fritz, Michael Sachs, Torsten Lantuit, Hugues Rapid CO2 release from eroding permafrost in seawater |
author_facet |
Tanski, George Wagner, Dirk Knoblauch, Christian Fritz, Michael Sachs, Torsten Lantuit, Hugues |
author_sort |
Tanski, George |
title |
Rapid CO2 release from eroding permafrost in seawater |
title_short |
Rapid CO2 release from eroding permafrost in seawater |
title_full |
Rapid CO2 release from eroding permafrost in seawater |
title_fullStr |
Rapid CO2 release from eroding permafrost in seawater |
title_full_unstemmed |
Rapid CO2 release from eroding permafrost in seawater |
title_sort |
rapid co2 release from eroding permafrost in seawater |
publisher |
Wiley |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/50485/ https://epic.awi.de/id/eprint/50485/1/Tanski_et_al_2019_Geophysical_Research_Letters.pdf https://hdl.handle.net/10013/epic.e192d32a-a286-406d-9a0c-bf98d45c9224 https://hdl.handle.net/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
EPIC3Geophysical Research Letters, Wiley, 46, ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/50485/1/Tanski_et_al_2019_Geophysical_Research_Letters.pdf https://hdl.handle.net/ Tanski, G. orcid:0000-0002-2992-2071 , Wagner, D. orcid:0000-0001-5064-497X , Knoblauch, C. orcid:0000-0002-7147-1008 , Fritz, M. orcid:0000-0003-4591-7325 , Sachs, T. orcid:0000-0002-9959-4771 and Lantuit, H. orcid:0000-0003-1497-6760 (2019) Rapid CO2 release from eroding permafrost in seawater , Geophysical Research Letters, 46 . doi:10.1029/2019gl084303 <https://doi.org/10.1029/2019gl084303> , hdl:10013/epic.e192d32a-a286-406d-9a0c-bf98d45c9224 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2019gl084303 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
20 |
container_start_page |
11244 |
op_container_end_page |
11252 |
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1766325696730234880 |