{"refrec":{"BRefID":134263,"RR":"Trouet, V.; Esper, J.; Graham, N.E.; Baker, A.; Scourse, J.D.; Frank, D.C. (2009). Persistent positive North Atlantic Oscillation mode dominated the medieval climate anomaly. Science (Wash.) 324(5923): 78-80. https://dx.doi.org/10.1126/science.1166349","BEntID":128192,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". Science (Wash.) 324(5923): 78-80. https://dx.doi.org/10.1126/science.1166349","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Trouet, V.; Esper, J.; Graham, N.E.; Baker, A.; Scourse, J.D.; Frank, D.C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Trouet, V. et al.","Englishabstract":"The Medieval Climate Anomaly (MCA) was the most recent pre-industrial era warm interval of European climate, yet its driving mechanisms remain uncertain. We present here a 947-year-long multidecadal North Atlantic Oscillation (NAO) reconstruction and find a persistent positive NAO during the MCA. Supplementary reconstructions based on climate model results and proxy data indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA). Globally distributed proxy data suggest that this NAO shift is one aspect of a global MCA-LIA climate transition that probably was coupled to prevailing La Nina-like conditions amplified by an intensified Atlantic meridional overturning circulation during the MCA.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Persistent positive North Atlantic Oscillation mode dominated the medieval climate anomaly","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-13 01:31:12.649891","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2009,"MonPub":null,"DateUpdate":"2021-11-25","DateCreate":"2009-04-24","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000264802100035","VABBcode":null,"OpenAcc":0,"DOI":"10.1126/science.1166349"},"refs":null,"anarec":{"AnaID":134263,"PubliDate":2009,"Pagination":"78-80","XtraPublOfAnaID":null,"ISBN":null,"Volume":"324","Issue":"5923","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43776,"SerRR":"Science (Washington). 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