气候变化领域集成服务门户(CCPortal): Caribbean hydroclimate and vegetation history across the last glacial period

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DOI	10.1016/j.quascirev.2019.06.019
	Caribbean hydroclimate and vegetation history across the last glacial period
	Warken S.F.; Scholz D.; Spötl C.; Jochum K.P.; Pajón J.M.; Bahr A.; Mangini A.
发表日期	2019
ISSN	0277-3791
起始页码	75
结束页码	90
卷号	218
英文摘要	We present a new speleothem trace element and stable isotope record, which extends previous paleoclimate evidence from Cuban speleothems to the last 96 ka. Multiple proxies were used to reconstruct Caribbean hydroclimate and vegetation variability on orbital to millennial timescales. In particular, our proxies indicate a shift to more abundant C4 (compared to C3) vegetation and/or reduced soil activity during the Last Glacial Maximum. Our results confirm the close link of Caribbean precipitation to North Atlantic climate variability, insolation and the strength of the AMOC. The associated variations in Caribbean SSTs and the shift of the ITCZ led to substantial changes of the hydrological cycle. During Heinrich stadials and the Younger Dryas, climatic conditions in Cuba were comparably cool and/or dry. In contrast, warm Dansgaard/Oeschger cycles were accompanied by wetter conditions. This is in agreement with previous evidence for the Holocene, when North Atlantic cold (warm) events coincided with drier (wetter) conditions in Cuba. However, our record suggests that this connection was less dominant during MIS 4 to 2, displayed by a weaker response of Cuban precipitation proxies to North Atlantic climatic shifts than during MIS 5 in particular. We hypothesize that this weaker connection was mediated by the southerly shifted ITCZ inducing a weakening of the northern branch of the Caribbean Low Level Jet which usually transports moisture into the northern Caribbean. This is strikingly evident during the deglacial, when driest and/or coolest conditions prevailed in western Cuba from HS 1 into the Younger Dryas, including the Bølling/Allerød interstadial. © 2019 Elsevier Ltd
英文关键词	Central America; Paleoclimatology; Speleothem; Stable isotopes; Trace elements
语种	英语
scopus关键词	Climatology; Isotopes; Oceanography; Trace elements; Vegetation; Central America; Climate variability; Hydrological cycles; Last Glacial Maximum; Last glacial period; Paleoclimatology; Speleothem; Stable isotopes; Glacial geology; Allerod; Bolling; Dansgaard-Oeschger cycle; deglaciation; hydrological cycle; hydrometeorology; intertropical convergence zone; Last Glacial; Last Glacial Maximum; marine isotope stage; paleoclimate; speleothem; stable isotope; trace element; vegetation history; Younger Dryas; Atlantic Ocean; Atlantic Ocean (North); Central America; Cuba
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151859
作者单位	Institute for Geosciences, University of Mainz, Germany; Institute of Environmental Physics, University of Heidelberg, Germany; Institute of Earth Sciences, University of Heidelberg, Germany; Institute of Geology, University of Innsbruck, Austria; Climate Geochemistry Department, Max Planck Institute for Chemistry, Mainz, Germany; Department of Paleogeography and Paleobiology, National Museum of Natural History, La Habana, Cuba
推荐引用方式 GB/T 7714	Warken S.F.,Scholz D.,Spötl C.,et al. Caribbean hydroclimate and vegetation history across the last glacial period[J],2019,218.
APA	Warken S.F..,Scholz D..,Spötl C..,Jochum K.P..,Pajón J.M..,...&Mangini A..(2019).Caribbean hydroclimate and vegetation history across the last glacial period.Quaternary Science Reviews,218.
MLA	Warken S.F.,et al."Caribbean hydroclimate and vegetation history across the last glacial period".Quaternary Science Reviews 218(2019).