{"refrec":{"BRefID":211453,"RR":"<b>Menviel, L.; Timmermann, A.; Mouchet, A.; Timm, O.</b> (2008). Meridional reorganizations of marine and terrestrial productivity during Heinrich events. <i>Paleoceanography 23(1)</i>. <a href=\"http://dx.doi.org/10.1029/2007PA001445\" target=\"_blank\">dx.doi.org/10.1029/2007PA001445</a>","BEntID":203375,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Paleoceanography 23(1)</i>. <a href=\"https://dx.doi.org/10.1029/2007PA001445\" target=\"_blank\">https://dx.doi.org/10.1029/2007PA001445</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Menviel, L.; Timmermann, A.; Mouchet, A.; Timm, O.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Menviel, L. <i>et al.</i>","Englishabstract":"To study the response of the global carbon cycle to a weakening of the Atlantic Meridional Overturning Circulation (AMOC), a series of freshwater perturbation experiments is conducted both under preindustrial and glacial conditions using the earth system model of intermediate complexity LOVECLIM. A shutdown of the AMOC leads to substantial cooling of the North Atlantic, a weak warming of the Southern Hemisphere, intensification of the northeasterly trade winds, and a southward shift of the Intertropical Convergence Zone (ITCZ). Trade wind anomalies change upwelling in the tropical oceans and hence marine productivity. Furthermore, hydrological changes associated with a southward displacement of the ITCZ lead to a reduction of terrestrial carbon stocks mainly in northern Africa and northern South America in agreement with paleoproxy data. In the freshwater perturbation experiments the ocean acts as a sink of CO<sub>2</sub>, primarily through increased solubility. The net atmospheric CO<sub>2</sub> anomaly induced by a shutdown of the AMOC amounts to about + 15 ppmv and - 10 ppmv for preindustrial and glacial conditions, respectively. This background state dependence can be explained by the fact that the glacial climate is drier and the terrestrial vegetation therefore releases a smaller amount of carbon to the atmosphere. This study demonstrates that the net CO<sub>2</sub> response to large-scale ocean circulation changes has significant contributions both from the terrestrial and marine carbon cycle.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Meridional reorganizations of marine and terrestrial productivity during Heinrich events","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2008,"MonPub":null,"DateUpdate":"2012-01-30","DateCreate":"2011-12-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000252571600001","VABBcode":null,"OpenAcc":0,"DOI":"10.1029/2007PA001445"},"refs":null,"anarec":{"AnaID":211453,"PubliDate":2008,"Pagination":null,"XtraPublOfAnaID":null,"ISBN":null,"Volume":"23","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45633,"SerRR":"Paleoceanography. 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