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The North Atlantic Glacial Eastern Boundary Current as a Key Driver for Ice‐Sheet—AMOC Interactions and Climate Instability

dc.rights.licenseopenen_US
hal.structure.identifierUnité Géosciences Marines [GM]
dc.contributor.authorTOUCANNE, Samuel
dc.contributor.authorSOULET, Guillaume
dc.contributor.authorVÁZQUEZ RIVEIROS, Natalia
dc.contributor.authorBOSWELL, Steven
dc.contributor.authorDENNIELOU, Bernard
hal.structure.identifierProcessus et interactions de fine échelle océanique [LOCEAN-PROTEO]
dc.contributor.authorWAELBROECK, Claire
hal.structure.identifierInstitut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
dc.contributor.authorBAYON, Germain
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorMOJTAHID, Meryem
hal.structure.identifierDe la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie [PACEA]
dc.contributor.authorBOSQ, Mathieu
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSABINE, Marjolaine
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorZARAGOSI, Sebastien
IDREF: 189039159
dc.contributor.authorBOURILLET, Jean‐françois
hal.structure.identifierLaboratoire d'Océanographie Physique et Spatiale [LOPS]
dc.contributor.authorMERCIER, Herlé
dc.date.accessioned2024-05-22T13:22:02Z
dc.date.available2024-05-22T13:22:02Z
dc.date.issued2021-03
dc.identifier.issn2572-4525en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199989
dc.description.abstractEnThe upper branch of the Atlantic meridional overturning circulation (AMOC) plays a critical role in ocean circulation and climate change, yet its variability during the last glacial period is poorly documented. Here, we investigate the northward-flowing Glacial Eastern Boundary Current (GEBC) in the North Atlantic, known today as the European Slope Current, and representing the easternmost portion of the upper branch of the AMOC. Based on flow speed and isotopic records, we show that Dansgaard-Oeschger (D-O) interstadials (stadials) correspond to a faster (weaker) GEBC during the ∼50–15 ka period. This, by analogy to present-day conditions, suggests enhanced (reduced) strength of the subpolar gyre and, by extension, of northern-sourced water production and AMOC during D-O interstadials (stadials). Concomitant fluctuations of both the GEBC and the European Ice Sheet between ∼30 and 17 ka suggest an active role of the upper branch of AMOC in the poleward transport of heat and freshwater to the northern North Atlantic, with direct impacts on deep water formation and AMOC strength. We explore these ice-sheet—AMOC interactions and the associated abrupt climate changes over the last glacial period and the last deglaciation.
dc.description.sponsorshipLabexMER Marine Excellence Research: a changing oceanen_US
dc.description.sponsorshipTsunamis en Atlantique et MaNche : Définition des Effets par Modélisation - ANR-11-RSNR-0023en_US
dc.language.isoENen_US
dc.rights.urihttp://hal.archives-ouvertes.fr/licences/copyright/
dc.title.enThe North Atlantic Glacial Eastern Boundary Current as a Key Driver for Ice‐Sheet—AMOC Interactions and Climate Instability
dc.typeArticle de revueen_US
dc.identifier.doi10.1029/2020PA004068en_US
dc.subject.halSciences de l'environnementen_US
dc.subject.halPlanète et Univers [physics]en_US
dc.description.sponsorshipEuropeElucidating the Causes and Effects of Atlantic Circulation Changes through Model-Data Integrationen_US
bordeaux.journalPaleoceanography and Paleoclimatologyen_US
bordeaux.volume36en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamSEDIMen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-03434827
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Paleoceanography%20and%20Paleoclimatology&rft.date=2021-03&rft.volume=36&rft.issue=3&rft.eissn=2572-4525&rft.issn=2572-4525&rft.au=TOUCANNE,%20Samuel&SOULET,%20Guillaume&V%C3%81ZQUEZ%20RIVEIROS,%20Natalia&BOSWELL,%20Steven&DENNIELOU,%20Bernard&rft.genre=article


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