气候变化领域集成服务门户(CCPortal): Rapid reductions in North Atlantic Deep Water during the peak of the last interglacial period

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DOI	10.1126/science.1248667
	Rapid reductions in North Atlantic Deep Water during the peak of the last interglacial period
	Galaasen E.V.; Ninnemann U.S.; Irvali N.; Kleiven H.F.; Rosenthal Y.; Kissel C.; Hodell D.A.
发表日期	2014
ISSN	0036-8075
起始页码	1129
结束页码	1132
卷号	343 期号:6175
英文摘要	Deep ocean circulation has been considered relatively stable during interglacial periods, yet little is known about its behavior on submillennial time scales. Using a subcentennially resolved epibenthic foraminiferal δ13C record, we show that the influence of North Atlantic Deep Water (NADW) was strong at the onset of the last interglacial period and was then interrupted by several prominent centennial-scale reductions. These NADW transients occurred during periods of increased ice rafting and southward expansions of polar water influence, suggesting that a buoyancy threshold for convective instability was triggered by freshwater and circum-Arctic cryosphere changes. The deep Atlantic chemical changes were similar in magnitude to those associated with glaciations, implying that the canonical view of a relatively stable interglacial circulation may not hold for conditions warmer and fresher than at present.
英文关键词	carbon 13; fresh water; ice; sea water; benthic foraminifera; buoyancy; carbon isotope; cryosphere; deep sea; glaciation; Last Interglacial; North Atlantic Deep Water; oceanic circulation; paleoceanography; article; Atlantic Ocean; cryosphere; glaciation; interglacial; North Atlantic deep water; priority journal; chemistry; greenhouse effect; ice cover; Atlantic Ocean; Atlantic Ocean (North); Atlantic Ocean; Global Warming; Ice Cover; Seawater; Atlantic Ocean; Global Warming; Ice Cover; Seawater
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/243765
作者单位	Department of Earth Science, University of Bergen, Bjerknes Centre for Climate Research, Allégaten 41, 5007 Bergen, Norway; Uni Climate, Uni Research, Bjerknes Centre for Climate Research, Bergen, Norway; Institute of Marine and Coastal Sciences, Department of Earth and Planetary Sciences, Rutgers University, New Brunswick, NJ, United States; Laboratorie des Sciences du Climat et de l'Environnement, Institut Pierre Simon Laplace, CEA/CNRS/UVSQ, Gif-sur-Yvette, France; Godwin Laboratory for Paleoclimate Research, Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom
推荐引用方式 GB/T 7714	Galaasen E.V.,Ninnemann U.S.,Irvali N.,et al. Rapid reductions in North Atlantic Deep Water during the peak of the last interglacial period[J],2014,343(6175).
APA	Galaasen E.V..,Ninnemann U.S..,Irvali N..,Kleiven H.F..,Rosenthal Y..,...&Hodell D.A..(2014).Rapid reductions in North Atlantic Deep Water during the peak of the last interglacial period.Science,343(6175).
MLA	Galaasen E.V.,et al."Rapid reductions in North Atlantic Deep Water during the peak of the last interglacial period".Science 343.6175(2014).