{"refrec":{"BRefID":363469,"RR":"<b>Goudsmit-Harzevoort, B.; Lansu, A.; Baatsen, M.L.J.; von der Heydt, A.S.; de Winter, N.J.; Zhang, Y.; Abe-Ouchi, A.; de Boer, A.M.; Chan, W.-L.; Donnadieu, Y.; Hutchinson, D.K.; Knorr, G.; Ladant, J.-B.; Morozova, P.; Niezgodzki, I.; Steinig, S.; Tripati, A.K.; Zhang, Z.; Zhu, J.; Ziegler, M.</b> (2023). The relationship between the global mean deep-sea and surface temperature during the Early Eocene. <i>Paleoceanography and Paleoclimatology 38(3)</i>: e2022PA004532. <a href=\"https://dx.doi.org/10.1029/2022PA004532\" target=\"_blank\">https://dx.doi.org/10.1029/2022PA004532</a>","BEntID":361187,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Paleoceanography and Paleoclimatology 38(3)</i>: e2022PA004532. <a href=\"https://dx.doi.org/10.1029/2022PA004532\" target=\"_blank\">https://dx.doi.org/10.1029/2022PA004532</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Goudsmit-Harzevoort, B.; Lansu, A.; Baatsen, M.L.J.; von der Heydt, A.S.; de Winter, N.J.; Zhang, Y.; Abe-Ouchi, A.; de Boer, A.M.; Chan, W.-L.; Donnadieu, Y.; Hutchinson, D.K.; Knorr, G.; Ladant, J.-B.; Morozova, P.; Niezgodzki, I.; Steinig, S.; Tripati, A.K.; Zhang, Z.; Zhu, J.; Ziegler, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Goudsmit-Harzevoort, B. <i>et al.</i>","Englishabstract":"Estimates of global mean near-surface air temperature (global SAT) for the Cenozoic era rely largely on paleo-proxy data of deep-sea temperature (DST), with the assumption that changes in global SAT covary with changes in the global mean deep-sea temperature (global DST) and global mean sea-surface temperature (global SST). We tested the validity of this assumption by analyzing the relationship between global SST, SAT, and DST using 25 different model simulations from the Deep-Time Model Intercomparison Project simulating the early Eocene Climatic Optimum (EECO) with varying CO<sub>2</sub> levels. Similar to the modern situation, we find limited spatial variability in DST, indicating that local DST estimates can be regarded as a first order representative of global DST. In line with previously assumed relationships, linear regression analysis indicates that both global DST and SAT respond stronger to changes in atmospheric CO<sub>2</sub> than global SST by a similar factor. Consequently, this model-based analysis validates the assumption that changes in global DST can be used to estimate changes in global SAT during the early Cenozoic. Paleo-proxy estimates of global DST, SST, and SAT during EECO show the best fit with model simulations with a 1,680 ppm atmospheric CO<sub>2</sub> level. This matches paleo-proxies of EECO atmospheric CO<sub>2</sub>, indicating a good fit between models and proxy-data.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The relationship between the global mean deep-sea and surface temperature during the Early Eocene","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":"deep-sea temperature; DeepMIP; early Eocene; model-data comparison; climate sensitivity","OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2024-02-15","DateCreate":"2023-04-11","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001000274600004","VABBcode":null,"OpenAcc":1,"DOI":"10.1029/2022PA004532"},"refs":null,"anarec":{"AnaID":363469,"PubliDate":2023,"Pagination":"e2022PA004532","XtraPublOfAnaID":null,"ISBN":null,"Volume":"38","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":292301,"SerRR":"Paleoceanography and Paleoclimatology. 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