{"refrec":{"BRefID":391623,"RR":"<b>Lamy, Frank; Winckler, Gisela; Arz, Helge W.; Farmer, Jesse R.; Gottschalk, Julia; Lembke-Jene, Lester; Middleton, Jennifer L.; van der Does, Michèlle; Tiedemann, Ralf; Alvarez Zarikian, Carlos; Basak, Chandranath; Brombacher, Anieke; Dumm, Levin; Esper, Oliver M.; Herbert, Lisa C.; Iwasaki, Shinya; Kreps, Gaston; Lawson, Vera J.; Lo, Li; Malinverno, Elisa; Martinez-Garcia, Alfredo; Michel, Elisabeth; Moretti, Simone; Moy, Christopher M.; Ravelo, Ana Christina; Riesselman, Christina R.; Saavedra-Pellitero, Mariem; Sadatzki, Henrik; Seo, Inah; Singh, Raj K.; Smith, Rebecca A.; Souza, Alexandre L.; Stoner, Joseph S.; Toyos, Maria; de Oliveira, Igor M. Venancio P.; Wan, Sui; Wu, Shuzhuang; Zhao, Xiangyu</b> (2024). Five million years of Antarctic Circumpolar Current strength variability. <i>Nature (Lond.) 627(8005)</i>: 789-796. <a href=\"https://dx.doi.org/10.1038/s41586-024-07143-3\" target=\"_blank\">https://dx.doi.org/10.1038/s41586-024-07143-3</a>","BEntID":389370,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Nature (Lond.) 627(8005)</i>: 789-796. <a href=\"https://dx.doi.org/10.1038/s41586-024-07143-3\" target=\"_blank\">https://dx.doi.org/10.1038/s41586-024-07143-3</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Lamy, Frank; Winckler, Gisela; Arz, Helge W.; Farmer, Jesse R.; Gottschalk, Julia; Lembke-Jene, Lester; Middleton, Jennifer L.; van der Does, Michèlle; Tiedemann, Ralf; Alvarez Zarikian, Carlos; Basak, Chandranath; Brombacher, Anieke; Dumm, Levin; Esper, Oliver M.; Herbert, Lisa C.; Iwasaki, Shinya; Kreps, Gaston; Lawson, Vera J.; Lo, Li; Malinverno, Elisa; Martinez-Garcia, Alfredo; Michel, Elisabeth; Moretti, Simone; Moy, Christopher M.; Ravelo, Ana Christina; Riesselman, Christina R.; Saavedra-Pellitero, Mariem; Sadatzki, Henrik; Seo, Inah; Singh, Raj K.; Smith, Rebecca A.; Souza, Alexandre L.; Stoner, Joseph S.; Toyos, Maria; de Oliveira, Igor M. Venancio P.; Wan, Sui; Wu, Shuzhuang; Zhao, Xiangyu","OrigTitleTranslFlag":0,"Authorstringtrunc":"Lamy, Frank <i>et al.</i>","Englishabstract":"The Antarctic Circumpolar Current (ACC) represents the world’s largest ocean-current system and affects global ocean circulation, climate and Antarctic&nbsp;ice-sheet stability. Today, ACC dynamics are controlled by atmospheric forcing, oceanic&nbsp;density gradients and eddy activity. Whereas&nbsp;palaeoceanographic reconstructions exhibit regional heterogeneity in ACC position and strength over Pleistocene glacial–interglacial cycles, the long-term evolution of the ACC is poorly known. Here we document changes in ACC strength from sediment cores in the Pacific Southern Ocean. We find no linear long-term trend in ACC flow since 5.3 million years ago (Ma), in contrast to global cooling and increasing global ice volume. Instead, we observe a reversal on a million-year timescale, from increasing ACC strength during Pliocene global cooling to a subsequent decrease with further Early Pleistocene cooling. This shift in the ACC regime coincided with a Southern Ocean reconfiguration that altered the sensitivity of the ACC to atmospheric and oceanic forcings. We find ACC strength changes to be closely linked to 400,000-year eccentricity cycles, probably originating from modulation of precessional changes in the South Pacific jet stream linked to tropical Pacific temperature variability. A persistent link between weaker ACC flow, equatorward-shifted opal deposition and reduced atmospheric CO<sub>2</sub> during glacial periods first emerged during the Mid-Pleistocene Transition (MPT). The strongest ACC flow occurred during warmer-than-present intervals of the Plio-Pleistocene, providing evidence of potentially increasing ACC flow with future climate warming.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Five million years of Antarctic Circumpolar Current strength variability","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-13 01:32:07.701343","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2024-03-25","DateCreate":"2024-03-25","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.1038/s41586-024-07143-3"},"refs":null,"anarec":{"AnaID":391623,"PubliDate":2024,"Pagination":"789-796","XtraPublOfAnaID":null,"ISBN":null,"Volume":"627","Issue":"8005","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43431,"SerRR":"Nature: International Weekly Journal of Science. Nature Publishing Group: London.  ISSN 0028-0836; e-ISSN 1476-4687","StandardTitleSer":"Nature: International Weekly Journal of Science","ISSN":"0028-0836","AbbrevSer":"Nature (Lond.)","StandardTitleMon":null,"StartPage":789,"Pages":8,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":null,"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":398645,"LibID":36,"BRefID":391623,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"398645","RFID":null,"PaidValue":null,"Medium":"Server","Description":"VLIZ Open Access","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Open access","URL":null,"ClassifID":53,"Classification":"Open access","ReqLink":null,"ClassifTypID":1,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":null,"InternalReq":0,"LoggedInReq":0,"Disclaimer":null,"DutchDisclaimer":null,"FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"Nature Publishing Group","City":"London"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":389370,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":389370,"AbstractFlag":1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.1038/s41586-024-07143-3","externalID":"10.1038/s41586-024-07143-3","URLTypeCode":"DOI","URLID":129888,"URLTypID":13,"URLType":"DOI","URLPrefix":"http://dx.doi.org/"}],"thesterms":null,"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":null,"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Chisala, Chilekwa, C.","newSesDate":{"date":"2024-03-25 08:39:44.513000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Chisala, Chilekwa, C.","updSesDate":{"date":"2024-03-25 08:39:44.513000","timezone_type":3,"timezone":"Europe/Brussels"}}}