Subsea permafrost organic carbon stocks are large and of dominantly low reactivity
Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and microbial decomposition of organic matter on the pan-Arctic s...
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Springer Nature
2023
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Online Access: | https://epic.awi.de/id/eprint/57854/ https://epic.awi.de/id/eprint/57854/1/Subsea%20permafrost%20organic%20carbon%20stocks%20are%20large%20and%20of%20dominantly%20low%20reactivity.pdf https://hdl.handle.net/10013/epic.d3caa5e9-6a25-4ff0-b77f-fc71b384bb06 |
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ftawi:oai:epic.awi.de:57854 2024-06-02T08:01:09+00:00 Subsea permafrost organic carbon stocks are large and of dominantly low reactivity Miesner, F Overduin, PP Grosse, G Strauss, J Langer, M Westermann, S Schneider von Deimling, T Brovkin, V Arndt, S 2023-06-09 application/pdf https://epic.awi.de/id/eprint/57854/ https://epic.awi.de/id/eprint/57854/1/Subsea%20permafrost%20organic%20carbon%20stocks%20are%20large%20and%20of%20dominantly%20low%20reactivity.pdf https://hdl.handle.net/10013/epic.d3caa5e9-6a25-4ff0-b77f-fc71b384bb06 unknown Springer Nature https://epic.awi.de/id/eprint/57854/1/Subsea%20permafrost%20organic%20carbon%20stocks%20are%20large%20and%20of%20dominantly%20low%20reactivity.pdf Miesner, F. orcid:0000-0002-2849-0406 , Overduin, P. orcid:0000-0001-9849-4712 , Grosse, G. orcid:0000-0001-5895-2141 , Strauss, J. orcid:0000-0003-4678-4982 , Langer, M. orcid:0000-0002-2704-3655 , Westermann, S. , Schneider von Deimling, T. orcid:0000-0002-4140-0495 , Brovkin, V. and Arndt, S. (2023) Subsea permafrost organic carbon stocks are large and of dominantly low reactivity , Scientific Reports, 13 (1), 9425- . doi:10.1038/s41598-023-36471-z <https://doi.org/10.1038/s41598-023-36471-z> , hdl:10013/epic.d3caa5e9-6a25-4ff0-b77f-fc71b384bb06 EPIC3Scientific Reports, Springer Nature, 13(1), pp. 9425-, ISSN: 2045-2322 Article isiRev 2023 ftawi https://doi.org/10.1038/s41598-023-36471-z 2024-05-07T23:37:52Z Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and microbial decomposition of organic matter on the pan-Arctic shelf over the past four glacial cycles. We find that Arctic shelf permafrost is a globally important long-term carbon sink storing 2822 (1518–4982) Pg OC, double the amount stored in lowland permafrost. Although currently thawing, prior microbial decomposition and organic matter aging limit decomposition rates to less than 48 Tg OC/yr (25–85) constraining emissions due to thaw and suggesting that the large permafrost shelf carbon pool is largely insensitive to thaw. We identify an urgent need to reduce uncertainty in rates of microbial decomposition of organic matter in cold and saline subaquatic environments. Large emissions of methane more likely derive from older and deeper sources than from organic matter in thawing permafrost. Article in Journal/Newspaper Arctic permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Scientific Reports 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 |
Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and microbial decomposition of organic matter on the pan-Arctic shelf over the past four glacial cycles. We find that Arctic shelf permafrost is a globally important long-term carbon sink storing 2822 (1518–4982) Pg OC, double the amount stored in lowland permafrost. Although currently thawing, prior microbial decomposition and organic matter aging limit decomposition rates to less than 48 Tg OC/yr (25–85) constraining emissions due to thaw and suggesting that the large permafrost shelf carbon pool is largely insensitive to thaw. We identify an urgent need to reduce uncertainty in rates of microbial decomposition of organic matter in cold and saline subaquatic environments. Large emissions of methane more likely derive from older and deeper sources than from organic matter in thawing permafrost. |
format |
Article in Journal/Newspaper |
author |
Miesner, F Overduin, PP Grosse, G Strauss, J Langer, M Westermann, S Schneider von Deimling, T Brovkin, V Arndt, S |
spellingShingle |
Miesner, F Overduin, PP Grosse, G Strauss, J Langer, M Westermann, S Schneider von Deimling, T Brovkin, V Arndt, S Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
author_facet |
Miesner, F Overduin, PP Grosse, G Strauss, J Langer, M Westermann, S Schneider von Deimling, T Brovkin, V Arndt, S |
author_sort |
Miesner, F |
title |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_short |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_full |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_fullStr |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_full_unstemmed |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_sort |
subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
publisher |
Springer Nature |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/57854/ https://epic.awi.de/id/eprint/57854/1/Subsea%20permafrost%20organic%20carbon%20stocks%20are%20large%20and%20of%20dominantly%20low%20reactivity.pdf https://hdl.handle.net/10013/epic.d3caa5e9-6a25-4ff0-b77f-fc71b384bb06 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
EPIC3Scientific Reports, Springer Nature, 13(1), pp. 9425-, ISSN: 2045-2322 |
op_relation |
https://epic.awi.de/id/eprint/57854/1/Subsea%20permafrost%20organic%20carbon%20stocks%20are%20large%20and%20of%20dominantly%20low%20reactivity.pdf Miesner, F. orcid:0000-0002-2849-0406 , Overduin, P. orcid:0000-0001-9849-4712 , Grosse, G. orcid:0000-0001-5895-2141 , Strauss, J. orcid:0000-0003-4678-4982 , Langer, M. orcid:0000-0002-2704-3655 , Westermann, S. , Schneider von Deimling, T. orcid:0000-0002-4140-0495 , Brovkin, V. and Arndt, S. (2023) Subsea permafrost organic carbon stocks are large and of dominantly low reactivity , Scientific Reports, 13 (1), 9425- . doi:10.1038/s41598-023-36471-z <https://doi.org/10.1038/s41598-023-36471-z> , hdl:10013/epic.d3caa5e9-6a25-4ff0-b77f-fc71b384bb06 |
op_doi |
https://doi.org/10.1038/s41598-023-36471-z |
container_title |
Scientific Reports |
container_volume |
13 |
container_issue |
1 |
_version_ |
1800745456297312256 |