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dc.contributor.authorGray, William Robert
dc.contributor.authorWills, Robert CJ
dc.contributor.authorRae, James William Buchanan
dc.contributor.authorBurke, Andrea
dc.contributor.authorIvanovic, Ruza F
dc.contributor.authorRoberts, William HG
dc.contributor.authorFerreira, David
dc.contributor.authorValdes, Paul J
dc.date.accessioned2021-03-17T00:38:39Z
dc.date.available2021-03-17T00:38:39Z
dc.date.issued2020-03-17
dc.identifier.citationGray , W R , Wills , R CJ , Rae , J W B , Burke , A , Ivanovic , R F , Roberts , W HG , Ferreira , D & Valdes , P J 2020 , ' Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation ' , Geophysical Research Letters , vol. 47 , no. 6 , e2019GL086328 . https://doi.org/10.1029/2019GL086328en
dc.identifier.issn0094-8276
dc.identifier.otherPURE: 266604554
dc.identifier.otherPURE UUID: 59536cf2-40d3-4a79-9607-d58672d1c08e
dc.identifier.otherORCID: /0000-0002-3754-1498/work/70919965
dc.identifier.otherORCID: /0000-0003-3904-2526/work/70919966
dc.identifier.otherScopus: 85082527819
dc.identifier.otherWOS: 000529097700012
dc.identifier.urihttps://hdl.handle.net/10023/21638
dc.descriptionFunding: UK Natural Environment Research Council (NERC) grant NE/N011716/1 (JWBR and AB). Tamaki Foundation, NASA (Grant NNX17AH56G), and NSF (Grant AGS-1929775) (RCJW). NERC Independent Research Fellowship NE/K008536/1 (RFI).en
dc.description.abstractNorth Pacific atmospheric and oceanic circulations are key missing pieces in our understanding of the reorganisation of the global climate system since the Last Glacial Maximum (LGM). Here, using a basin‐wide compilation of planktic foraminiferal δ18O, we show that the North Pacific subpolar gyre extended ~3° further south during the LGM, consistent with sea surface temperature and productivity proxy data. Climate models indicate that the expansion of the subpolar gyre was associated with a substantial gyre strengthening, and that these gyre circulation changes were driven by a southward shift of the mid‐latitude westerlies and increased wind‐stress from the polar easterlies. Using single‐forcing model runs, we show that these atmospheric circulation changes are a non‐linear response to ice‐sheet topography/albedo, and CO2. Our reconstruction indicates that the gyre boundary (and thus westerly winds) began to migrate northward at ~16.5 ka, driving changes in ocean heat transport, biogeochemistry, and North American hydroclimate.
dc.language.isoeng
dc.relation.ispartofGeophysical Research Lettersen
dc.rightsCopyright © 2020 American Geophysical Union. All Rights Reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1029/2019GL086328en
dc.subjectNorth Pacificen
dc.subjectDeglaciationen
dc.subjectGyre circulationen
dc.subjectWesterliesen
dc.subjectOxygen isotopesen
dc.subjectClimate modelsen
dc.subjectQC Physicsen
dc.subjectQE Geologyen
dc.subjectDASen
dc.subjectSDG 13 - Climate Actionen
dc.subject.lccQCen
dc.subject.lccQEen
dc.titleWind-driven evolution of the North Pacific subpolar gyre over the last deglaciationen
dc.typeJournal articleen
dc.contributor.sponsorNERCen
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.identifier.doihttps://doi.org/10.1029/2019GL086328
dc.description.statusPeer revieweden
dc.date.embargoedUntil2021-03-17
dc.identifier.grantnumberNE/N011716/1en


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