气候变化领域集成服务门户(CCPortal): Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation

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DOI	10.1016/j.quascirev.2020.106542
	Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation
	Martin L.C.P.; Blard P.-H.; Lavé J.; Jomelli V.; Charreau J.; Condom T.; Lupker M.; Arnold M.; Aumaître G.; Bourlès D.L.; Keddadouche K.; ASTER Team
发表日期	2020
ISSN	0277-3791
卷号	247
英文摘要	The respective impacts of Northern and Southern Hemispheric climatic changes on the Tropics during the last deglaciation remain poorly understood. In the High Tropical Andes, the Antarctic Cold Reversal (ACR, 14.3–12.9 ka BP) is better represented among morainic records than the Younger Dryas (12.9–11.7 ka BP). However, in the Altiplano basin (Bolivia), two cold periods of the Northern Hemisphere (Heinrich Stadial 1a, 16.5–14.5 ka BP, and the Younger Dryas) are synchronous with (i) major advances or standstills of paleoglaciers and (ii) the highstands of giant paleolakes Tauca and Coipasa. Here, we present new cosmic ray exposure (CRE) ages from glacial landforms of the Bolivian Andes that formed during the last deglaciation (Termination 1). We reconstruct the equilibrium line altitudes (ELA) associated with each moraine and use them in an inverse algorithm combining paleoglaciers and paleolake budgets to derive temperature and precipitation during the last deglaciation. Our temperature reconstruction (ΔT relative to present day) yields a consistent regional trend of progressive warming from ΔT = −5 to −2.5 °C during 17–14.5 ka BP, followed by a return to colder conditions around −4 °C during the ACR (14.5–12.9 ka BP). The Coipasa highstand (12.9–11.8 ka BP) is coeval with another warming trend followed by ΔT stabilization at the onset of the Holocene (ca. 10 ka BP), around −3 °C. Our results suggest that, during the last deglaciation (20–10 ka BP) atmospheric temperatures in the Tropical Andes mimicked Antarctic variability, whereas precipitation over the Altiplano was driven by changes in the Northern Hemisphere. © 2020 Elsevier Ltd
英文关键词	10Be; 3He; Continental paleotemperature and precipitation reconstruction; Cosmogenic nuclides; Glacial geomorphology; Global and regional climate; Last deglaciation; Paleoclimate dynamics; Paleoglaciers; Termination 1; Tropical Andes
语种	英语
scopus关键词	Budget control; Cosmology; Tropics; Antarctic cold reversals; Equilibrium line altitudes; Glacial landforms; Inverse algorithm; Last deglaciation; Northern Hemispheres; Temperature reconstruction; Temperature variation; Atmospheric temperature; glacial landform; Heinrich event; Holocene; last deglaciation; Northern Hemisphere; precipitation (climatology); Southern Hemisphere; temperature gradient; Younger Dryas; Altiplano; Andes; Antarctica; Bolivia
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/151293
作者单位	Centre de Recherches Pétrographiques et Géochimiques, Université de Lorraine, CNRS, Nancy, F-54000, France; Department of Geosciences, University of Oslo, P.O. Box 1047, Blindern, Oslo, 0316, Norway; Laboratoire de Glaciologie, DGES-IGEOS, Université Libre de Bruxelles, Brussels, 1050, Belgium; Université Paris 1 Panthéon-Sorbonne, CNRS Laboratoire de Géographie Physique, Meudon, France; Aix-Marseille Université, CNRS-IRD-Collège de France-INRAE, UM 34 CEREGE, Aix-en-Provence, France; Université Grenoble Alpes, CNRS, IRD, G-INP, Institut des Geosciences de l'Environnement (IGE) – UMR, Grenoble, 5001, France; ETH, Geological Institute, Sonneggstrasse 5, Zurich, 8092, Switzerland
推荐引用方式 GB/T 7714	Martin L.C.P.,Blard P.-H.,Lavé J.,et al. Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation[J],2020,247.
APA	Martin L.C.P..,Blard P.-H..,Lavé J..,Jomelli V..,Charreau J..,...&ASTER Team.(2020).Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation.Quaternary Science Reviews,247.
MLA	Martin L.C.P.,et al."Antarctic-like temperature variations in the Tropical Andes recorded by glaciers and lakes during the last deglaciation".Quaternary Science Reviews 247(2020).