{"refrec":{"BRefID":231379,"RR":"<b>Groot, M.H.M.; Bogotá, R.G.; Lourens, L.J.; Hooghiemstra, H.; Vriend, M.; Berrio, J.C.; Tuenter, E.; Van der Plicht, J.; van Geel, B.; Ziegler, M.; Weber, S.L.; Betancourt, A.; Contreras, L.; Gaviria, S.; Giraldo, C.; González, N.; Jansen, J.H.F.; Konert, M.; Ortega, D.; Rangel, O.; Sarmiento, G.; Vandenberghe, J.; Van der Hammen, T.; van der Linden, M.; Westerhoff, W.</b> (2011). Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles. <i>Clim. Past 7(1)</i>: 299-316","BEntID":223091,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Clim. Past 7(1)</i>: 299-316. <a href=\"https://dx.doi.org/10.5194/cp-7-299-2011\" target=\"_blank\">https://dx.doi.org/10.5194/cp-7-299-2011</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Groot, M.H.M.; Bogotá, R.G.; Lourens, L.J.; Hooghiemstra, H.; Vriend, M.; Berrio, J.C.; Tuenter, E.; Van der Plicht, J.; van Geel, B.; Ziegler, M.; Weber, S.L.; Betancourt, A.; Contreras, L.; Gaviria, S.; Giraldo, C.; González, N.; Jansen, J.H.F.; Konert, M.; Ortega, D.; Rangel, O.; Sarmiento, G.; Vandenberghe, J.; Van der Hammen, T.; van der Linden, M.; Westerhoff, W.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Groot, M.H.M. <i>et al.</i>","Englishabstract":"Here we developed a composite pollen-based record of altitudinal vegetation changes from Lake Fuquene (5 degrees N) in Colombia at 2540m elevation. We quantitatively calibrated Arboreal Pollen percentages (AP%) into mean annual temperature (MAT) changes with an unprecedented similar to 60-year resolution over the past 284 000 years. An age model for the AP% record was constructed using frequency analysis in the depth domain and tuning of the distinct obliquity-related variations to the latest marine oxygen isotope stacked record. The reconstructed MAT record largely concurs with the similar to 100 and 41-kyr (obliquity) paced glacial cycles and is superimposed by extreme changes of up to 7 to 10 degrees Celsius within a few hundred years at the major glacial terminations and during marine isotope stage 3, suggesting an unprecedented North Atlantic - equatorial link. Using intermediate complexity transient climate modelling experiments, we demonstrate that ice volume and greenhouse gasses are the major forcing agents causing the orbital-related MAT changes, while direct precession-induced insolation changes had no significant impact on the high mountain vegetation during the last two glacial cycles.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles","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":2011,"MonPub":null,"DateUpdate":"2016-11-09","DateCreate":"2013-12-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000288992700022","VABBcode":null,"OpenAcc":1,"DOI":"10.5194/cp-7-299-2011"},"refs":null,"anarec":{"AnaID":231379,"PubliDate":2011,"Pagination":"299-316","XtraPublOfAnaID":null,"ISBN":null,"Volume":"7","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":220505,"SerRR":"Climate of the Past. 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