The relative influence of insolation, CO2, and ice sheets on the East Asian summer monsoon (EASM) is not well understood especially at regional scale. Here a Gaussian emulator based on simulations with HadCM3 is used to quantitatively assess how astronomical forcing, CO2, and northern hemisphere ice sheets affect the variation of the summer precipitation over the last 800 ky. Our results show that in the EASM domain north of 25°N, the variation of the summer precipitation is dominated by precession, leading to strong 23-ky cycles, while the ice sheets only modulate the effect of insolation by influencing the land-sea pressure gradient. In the southern part, ice sheets play a more important role, generating 100-ky cycles, through influencing the latitude of the Intertropical Convergence Zone and the Hadley cell. Obliquity and CO2 have little effect on the summer precipitation as compared to precession and ice sheets.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Diverse regional sensitivity of summer precipitation in East Asia to ice volume, CO2 and astronomical forcing","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-21 01:33:32.303963","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"astronomical parameters; East Asian summer monsoon; ice sheets; insolation; ITCZ; paleoclimate modeling","OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2024-02-19","DateCreate":"2024-02-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000641974600011","VABBcode":null,"OpenAcc":0,"DOI":"10.1029/2020GL092005"},"refs":null,"anarec":{"AnaID":383030,"PubliDate":2021,"Pagination":"e2020GL092005","XtraPublOfAnaID":null,"ISBN":null,"Volume":"48","Issue":"7","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42920,"SerRR":"Geophysical Research Letters. American Geophysical Union: Washington. ISSN 0094-8276; e-ISSN 1944-8007","StandardTitleSer":"Geophysical Research Letters","ISSN":"0094-8276","AbbrevSer":"Geophys. Res. Lett.","StandardTitleMon":null,"StartPage":10,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Lyu","Firstname":"Anqi","Initials":"A.","Affiliation":"Georges Lemaître Center for Earth and Climate Research, Earth and Life Institute, Université Catholique de Louvain","Discriminator":null,"CorporateFlag":0,"BEntID":380772,"AutID":518280,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"TECLIM","InsFSN":"Université Catholique de Louvain; Lemaître Centre For Earth and Climate Research","ORCID":"0000-0002-2026-5247","PersID":42320,"InsID":15176},{"AutName":"Yin","Firstname":null,"Initials":"Q.Z.","Affiliation":"Georges Lemaître Center for Earth and Climate Research, Earth and Life Institute, Université catholique de Louvain","Discriminator":null,"CorporateFlag":0,"BEntID":380772,"AutID":224937,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"ELIc","InsFSN":"Université Catholique de Louvain; Science and Technology Sector; Earth and Life Institute; Earth and Climate division","ORCID":"0000-0002-7189-8335","PersID":18655,"InsID":468},{"AutName":"Crucifix","Firstname":"Michel","Initials":"M.","Affiliation":"Georges Lemaître Centre for Earth and Climate Research, Earth and Life Institute, Université Catholique de Louvain","Discriminator":null,"CorporateFlag":0,"BEntID":380772,"AutID":196578,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"ELIc","InsFSN":"Université Catholique de Louvain; Science and Technology Sector; Earth and Life Institute; Earth and Climate division","ORCID":"0000-0002-3437-4911","PersID":17537,"InsID":468},{"AutName":"Sun","Firstname":null,"Initials":"Y.B.","Affiliation":"Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China.","Discriminator":null,"CorporateFlag":0,"BEntID":380772,"AutID":556861,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":396294,"LibID":36,"BRefID":383030,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"396294","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"
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