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More efficient North Atlantic carbon pump during the Last Glacial Maximum

Yu, Jimin; Menviel, L; Jin, Z. D.; Thornalley, D.J.R.; Foster, Gavin L; rohling, eelco; McCave, Nick; McManus, J. F.; Dai, Yuhao; Ren, H.; He, Feng; Zhang, Fei; Chen, P. J; Roberts, Andrew P.

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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...[Show more]

dc.contributor.authorYu, Jimin
dc.contributor.authorMenviel, L
dc.contributor.authorJin, Z. D.
dc.contributor.authorThornalley, D.J.R.
dc.contributor.authorFoster, Gavin L
dc.contributor.authorrohling, eelco
dc.contributor.authorMcCave, Nick
dc.contributor.authorMcManus, J. F.
dc.contributor.authorDai, Yuhao
dc.contributor.authorRen, H.
dc.contributor.authorHe, Feng
dc.contributor.authorZhang, Fei
dc.contributor.authorChen, P. J
dc.contributor.authorRoberts, Andrew P.
dc.date.accessioned2020-02-13T03:01:03Z
dc.date.available2020-02-13T03:01:03Z
dc.identifier.issn2041-1723
dc.identifier.urihttp://hdl.handle.net/1885/201690
dc.description.abstractDuring 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.
dc.description.sponsorshipThis work is supported by ARC Future Fellowship (FT140100993) and Discovery Projects (DP140101393 and DP190100894) and NSFC (41676026) to J.Y., DECRA (DE150100107) and Discovery (DP180100048) to L.M., NERC Advanced Fellowship to GLF (NE/D00876X/2), and Australian Laureate Fellowship (FL120100050) to E.J.R.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherMacmillan Publishers Ltd
dc.rights© The Author(s) 2019
dc.rights.urihttp://creativecommons.org/ licenses/by/4.0/
dc.sourceNature Communications
dc.titleMore efficient North Atlantic carbon pump during the Last Glacial Maximum
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume10
dc.date.issued2019
local.identifier.absfor040104 - Climate Change Processes
local.identifier.ariespublicationu3102795xPUB1970
local.publisher.urlhttps://www.nature.com/
local.type.statusPublished Version
local.contributor.affiliationYu, Jimin, College of Science, ANU
local.contributor.affiliationMenviel, L, University of New South Wales
local.contributor.affiliationJin, Z. D., Chinese Academy of Sciences
local.contributor.affiliationThornalley, D.J.R., University College London
local.contributor.affiliationFoster, Gavin L, University of Southampton
local.contributor.affiliationRohling, Eelco, College of Science, ANU
local.contributor.affiliationMcCave, Nick, University of Cambridge
local.contributor.affiliationMcManus, J. F., Columbia University
local.contributor.affiliationDai, Yuhao, College of Science, ANU
local.contributor.affiliationRen, H., National Taiwan University
local.contributor.affiliationHe, Feng, University of Wisconsin-Madison
local.contributor.affiliationZhang, Fei, Chinese Academy of Sciences
local.contributor.affiliationChen, P. J, State Key Laboratory of Marine Geology,
local.contributor.affiliationRoberts, Andrew, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/DP140101393
dc.relationhttp://purl.org/au-research/grants/arc/DP190100894
dc.relationhttp://purl.org/au-research/grants/arc/DE150100107
dc.relationhttp://purl.org/au-research/grants/arc/DP180100048
dc.relationhttp://purl.org/au-research/grants/arc/FL120100050
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage11
local.identifier.doi10.1038/s41467-019-10028-z
local.identifier.absseo970105 - Expanding Knowledge in the Environmental Sciences
dc.date.updated2019-11-25T07:33:05Z
local.identifier.thomsonID4.68023E+11
dcterms.accessRightsOpen Access
dc.provenanceThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.
dc.rights.licenseCreative Commons license
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