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dc.contributor.authorLi, Tao
dc.contributor.authorRobinson, Laura F.
dc.contributor.authorChen, Tianyu
dc.contributor.authorWang, Xingchen T.
dc.contributor.authorBurke, Andrea
dc.contributor.authorRae, James W. B.
dc.contributor.authorPegrum-Haram, Albertine
dc.contributor.authorKnowles, Timothy D. J.
dc.contributor.authorLi, Gaojun
dc.contributor.authorChen, Jun
dc.contributor.authorNg, Hong Chin
dc.contributor.authorProkopenko, Maria
dc.contributor.authorRowland, George
dc.contributor.authorSamperiz, Ana
dc.contributor.authorStewart, Joseph A.
dc.contributor.authorSouthon, John
dc.contributor.authorSpooner, Peter T.
dc.identifier.citationLi , T , Robinson , L F , Chen , T , Wang , X T , Burke , A , Rae , J W B , Pegrum-Haram , A , Knowles , T D J , Li , G , Chen , J , Ng , H C , Prokopenko , M , Rowland , G , Samperiz , A , Stewart , J A , Southon , J & Spooner , P T 2020 , ' Rapid shifts in circulation and biogeochemistry of the Southern Ocean during deglacial carbon cycle events ' , Science Advances , vol. 6 , no. 42 , eabb3807 .
dc.identifier.otherPURE: 270461172
dc.identifier.otherPURE UUID: 4da97dc1-eff7-44d9-9b86-c5bdd8c76ad8
dc.identifier.otherORCID: /0000-0002-3754-1498/work/82788704
dc.identifier.otherORCID: /0000-0003-3904-2526/work/82788705
dc.identifier.otherScopus: 85093705559
dc.identifier.otherWOS: 000579164600014
dc.descriptionSupport for this work comes from the European Research Council, the Natural Environmental Research Council, the U.S. National Science Foundation, the National Oceanic and Atmospheric Administration (NOAA) Ocean Exploration Trust, the Royal Society Newton Mobility Grant in conjunction with the National Natural Science Foundation of China (No. 41711530222), the National Natural Science Foundation of China (No. 41991325, 41822603, and 91955201), the China Scholarship Council, and the program A for outstanding PhD candidate of Nanjing University. Computational resources for the SOSE are provided by NSF XSEDE resource grant OCE130007.en
dc.description.abstractThe Southern Ocean plays a crucial role in regulating atmospheric CO2 on centennial to millennial time scales. However, observations of sufficient resolution to explore this have been lacking. Here, we report high-resolution, multiproxy records based on precisely dated deep-sea corals from the Southern Ocean. Paired deep (∆14C and δ11B) and surface (δ15N) proxy data point to enhanced upwelling coupled with reduced efficiency of the biological pump at 14.6 and 11.7 thousand years (ka) ago, which would have facilitated rapid carbon release to the atmosphere. Transient periods of unusually well-ventilated waters in the deep Southern Ocean occurred at 16.3 and 12.8 ka ago. Contemporaneous atmospheric carbon records indicate that these Southern Ocean ventilation events are also important in releasing respired carbon from the deep ocean to the atmosphere. Our results thus highlight two distinct modes of Southern Ocean circulation and biogeochemistry associated with centennial-scale atmospheric CO2 jumps during the last deglaciation.
dc.relation.ispartofScience Advancesen
dc.rightsCopyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.en
dc.subjectGC Oceanographyen
dc.titleRapid shifts in circulation and biogeochemistry of the Southern Ocean during deglacial carbon cycle eventsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. St Andrews Isotope Geochemistryen
dc.description.statusPeer revieweden

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