气候变化领域集成服务门户(CCPortal): A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period

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DOI	10.1126/science.aaa9554
	A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period
	Thornalley D.J.R.; Bauch H.A.; Gebbie G.; Guo W.; Ziegler M.; Bernasconi S.M.; Barker S.; Skinner L.C.; Yu J.
发表日期	2015
ISSN	0036-8075
起始页码	706
结束页码	710
卷号	349 期号:6249
英文摘要	Changes in the formation of dense water in the Arctic Ocean and Nordic Seas [the "Arctic Mediterranean" (AM)] probably contributed to the altered climate of the last glacial period. We examined past changes in AM circulation by reconstructing radiocarbon ventilation ages of the deep Nordic Seas over the past 30,000 years. Our results show that the glacial deep AM was extremely poorly ventilated (ventilation ages of up to 10,000 years). Subsequent episodic overflow of aged water into the mid-depth North Atlantic occurred during deglaciation. Proxy data also suggest that the deep glacial AM was ∼2° to 3°C warmer than modern temperatures; deglacial mixing of the deep AM with the upper ocean thus potentially contributed to the melting of sea ice, icebergs, and terminal ice-sheet margins. © 2015, American Association for the Advancement of Science. All rights reserved.
英文关键词	carbon 14; sea water; surface water; climate variation; deep sea; deglaciation; episodic event; Last Glacial; meltwater; mixing; oceanic circulation; paleotemperature; proxy climate record; radiocarbon dating; reconstruction; sea ice; upper ocean; ventilation; air conditioning; Arctic; Arctic Mediterranean; Article; benthic foraminifera; chronology; continental ice; continental shelf; cooling; deglaciation; foraminifer; glacial period; heat transfer; ice cover; ice sheet; iceberg; last glacial maximum; North Atlantic deep water; Northern Hemisphere; priority journal; sea; sea ice; sedimentation rate; surface property; thermodynamics; water temperature; Younger Dryas; Arctic Ocean; Atlantic Ocean; Atlantic Ocean (North); Mediterranean Sea; Norwegian Sea
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245740
作者单位	Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA 02543, United States; Department of Geography, University College London, London, WC1E 6BT, United Kingdom; Academy of Sciences, Humanities and Literature, Mainz, Germany; GEOMAR Helmholtz Centre for Ocean Research, Kiel, 24148, Germany; Eidgenössische Technische Hochschule Zürich, Zurich, 8093, Switzerland; School of Earth and Ocean Sciences, Cardiff University, Cardiff, CF10 3XQ, United Kingdom; Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; Research School of Earth Sciences, Australian National University, Acton, ACT 0200, Australia
推荐引用方式 GB/T 7714	Thornalley D.J.R.,Bauch H.A.,Gebbie G.,et al. A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period[J],2015,349(6249).
APA	Thornalley D.J.R..,Bauch H.A..,Gebbie G..,Guo W..,Ziegler M..,...&Yu J..(2015).A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period.Science,349(6249).
MLA	Thornalley D.J.R.,et al."A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period".Science 349.6249(2015).