气候变化领域集成服务门户(CCPortal): Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core; East Antarctica

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DOI	10.1016/j.quascirev.2019.03.025
	Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core; East Antarctica
	Bréant C.; Landais A.; Orsi A.; Martinerie P.; Extier T.; Prié F.; Stenni B.; Jouzel J.; Masson-Delmotte V.; Leuenberger M.
发表日期	2019
ISSN	0277-3791
起始页码	156
结束页码	165
卷号	211
英文摘要	Each glacial – interglacial transition of the Quaternary occurs in a different orbital context leading to various timing for the deglaciation and sequence of high vs low latitudes events. Termination 3, 250 kyears before present (ka), is an unusual deglaciation in the context of the last 9 deglaciations recorded in the old EPICA Dome C (EDC) Antarctic ice core: it exhibits a three-phase sequence, two warming phases separated by a small cooling, the last phase suggesting a particularly rapid temperature increase. We present here new high resolution δ 15 N and deuterium excess (d-excess) data from the EDC ice core to provide a detailed temperature change estimate during this termination. Then, we combined the δD and δ 18 O to discuss the relationship between high and low latitude changes through the d-excess. We also provide the high vs low latitude sequence of events over this deglaciation without chronological uncertainty using low latitude ice core proxies. In agreement with previous studies based on speleothem analyses, we show that the first phase of Termination 3 (256–249 ka) is associated with small Heinrich like events linked to changes in ITCZ position, monsoon activity and teleconnections with Antarctica. In a context of minimum Northern Hemisphere insolation, this leads to a rather strong Antarctic warming, as observed in the δ 15 N record in contrast to the relatively small δD increase. The second warming phase occurs during the rise of the Northern hemisphere insolation, with a large Heinrich like event leading to the characteristic Antarctic warming observed in the δ 15 N and δD increase as for the more recent terminations. © 2019 Elsevier Ltd
英文关键词	Antarctic temperature; Bipolar seesaw; Deglaciations; Firn densification model; Heinrich like events; Ice core; Termination 3; Water and air isotopes
语种	英语
scopus关键词	Domes; Glacial geology; Incident solar radiation; Isotopes; Bipolar seesaw; Deglaciations; Densification models; Heinrich like events; Ice core; Termination 3; Ice; air temperature; chronology; deglaciation; deuterium; glacial-interglacial cycle; Heinrich event; ice core; insolation; isotopic analysis; marine isotope stage; nitrogen isotope; Northern Hemisphere; numerical model; oxygen isotope; proxy climate record; Quaternary; speleothem; Antarctica; Dome Concordia; East Antarctica; East Antarctica
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/151962
作者单位	Laboratoire des Sciences Du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, 38000, France; Department of Environmental Sciences, Informatics and Statistics, University Ca’ Foscari of Venice, Venice, Italy; Climate and Environmental Physics, Physics Institute and Oeschger Center for Climate Research, University of Bern, Sidlerstrasse, 5, Bern, 3012, Switzerland
推荐引用方式 GB/T 7714	Bréant C.,Landais A.,Orsi A.,et al. Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core; East Antarctica[J],2019,211.
APA	Bréant C..,Landais A..,Orsi A..,Martinerie P..,Extier T..,...&Leuenberger M..(2019).Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core; East Antarctica.Quaternary Science Reviews,211.
MLA	Bréant C.,et al."Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core; East Antarctica".Quaternary Science Reviews 211(2019).