More efficient North Atlantic carbon pump during the Last Glacial Maximum
During the Last Glacial Maximum (LGM; ~20,000 years ago), the global ocean sequestered a large amount of carbon lost from the atmosphere and terrestrial biosphere. Suppressed CO2 outgassing from the Southern Ocean is the prevailing explanation for this carbon sequestration. By contrast, the North At...
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Online Access: | http://hdl.handle.net/1959.4/unsworks_79031 https://doi.org/10.1038/s41467-019-10028-z |
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/unsworks_79031 2024-05-12T08:07:25+00:00 More efficient North Atlantic carbon pump during the Last Glacial Maximum Yu, J Menviel, L Jin, ZD Thornalley, DJR Foster, GL Rohling, EJ McCave, IN McManus, JF Dai, Y Ren, H He, F Zhang, F Chen, PJ Roberts, AP 2019-12-01 http://hdl.handle.net/1959.4/unsworks_79031 https://doi.org/10.1038/s41467-019-10028-z unknown Springer Nature http://purl.org/au-research/grants/arc/FT180100606 http://hdl.handle.net/1959.4/unsworks_79031 https://doi.org/10.1038/s41467-019-10028-z open access https://purl.org/coar/access_right/c_abf2 CC BY https://creativecommons.org/licenses/by/4.0/ urn:ISSN:2041-1723 Nature Communications, 10, 1, 2170 15 Life on Land journal article http://purl.org/coar/resource_type/c_6501 2019 ftunswworks https://doi.org/10.1038/s41467-019-10028-z 2024-04-17T15:10:12Z During the Last Glacial Maximum (LGM; ~20,000 years ago), the global ocean sequestered a large amount of carbon lost from the atmosphere and terrestrial biosphere. Suppressed CO2 outgassing from the Southern Ocean is the prevailing explanation for this carbon sequestration. By contrast, the North Atlantic Ocean—a major conduit for atmospheric CO2 transport to the ocean interior via the overturning circulation—has received much less attention. Here we demonstrate that North Atlantic carbon pump efficiency during the LGM was almost doubled relative to the Holocene. This is based on a novel proxy approach to estimate air–sea CO2 exchange signals using combined carbonate ion and nutrient reconstructions for multiple sediment cores from the North Atlantic. Our data indicate that in tandem with Southern Ocean processes, enhanced North Atlantic CO2 absorption contributed to lowering ice-age atmospheric CO2. Article in Journal/Newspaper North Atlantic Southern Ocean UNSW Sydney (The University of New South Wales): UNSWorks Southern Ocean Nature Communications 10 1 |
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UNSW Sydney (The University of New South Wales): UNSWorks |
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ftunswworks |
language |
unknown |
topic |
15 Life on Land |
spellingShingle |
15 Life on Land Yu, J Menviel, L Jin, ZD Thornalley, DJR Foster, GL Rohling, EJ McCave, IN McManus, JF Dai, Y Ren, H He, F Zhang, F Chen, PJ Roberts, AP More efficient North Atlantic carbon pump during the Last Glacial Maximum |
topic_facet |
15 Life on Land |
description |
During the Last Glacial Maximum (LGM; ~20,000 years ago), the global ocean sequestered a large amount of carbon lost from the atmosphere and terrestrial biosphere. Suppressed CO2 outgassing from the Southern Ocean is the prevailing explanation for this carbon sequestration. By contrast, the North Atlantic Ocean—a major conduit for atmospheric CO2 transport to the ocean interior via the overturning circulation—has received much less attention. Here we demonstrate that North Atlantic carbon pump efficiency during the LGM was almost doubled relative to the Holocene. This is based on a novel proxy approach to estimate air–sea CO2 exchange signals using combined carbonate ion and nutrient reconstructions for multiple sediment cores from the North Atlantic. Our data indicate that in tandem with Southern Ocean processes, enhanced North Atlantic CO2 absorption contributed to lowering ice-age atmospheric CO2. |
format |
Article in Journal/Newspaper |
author |
Yu, J Menviel, L Jin, ZD Thornalley, DJR Foster, GL Rohling, EJ McCave, IN McManus, JF Dai, Y Ren, H He, F Zhang, F Chen, PJ Roberts, AP |
author_facet |
Yu, J Menviel, L Jin, ZD Thornalley, DJR Foster, GL Rohling, EJ McCave, IN McManus, JF Dai, Y Ren, H He, F Zhang, F Chen, PJ Roberts, AP |
author_sort |
Yu, J |
title |
More efficient North Atlantic carbon pump during the Last Glacial Maximum |
title_short |
More efficient North Atlantic carbon pump during the Last Glacial Maximum |
title_full |
More efficient North Atlantic carbon pump during the Last Glacial Maximum |
title_fullStr |
More efficient North Atlantic carbon pump during the Last Glacial Maximum |
title_full_unstemmed |
More efficient North Atlantic carbon pump during the Last Glacial Maximum |
title_sort |
more efficient north atlantic carbon pump during the last glacial maximum |
publisher |
Springer Nature |
publishDate |
2019 |
url |
http://hdl.handle.net/1959.4/unsworks_79031 https://doi.org/10.1038/s41467-019-10028-z |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
urn:ISSN:2041-1723 Nature Communications, 10, 1, 2170 |
op_relation |
http://purl.org/au-research/grants/arc/FT180100606 http://hdl.handle.net/1959.4/unsworks_79031 https://doi.org/10.1038/s41467-019-10028-z |
op_rights |
open access https://purl.org/coar/access_right/c_abf2 CC BY https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1038/s41467-019-10028-z |
container_title |
Nature Communications |
container_volume |
10 |
container_issue |
1 |
_version_ |
1798850088670330880 |