气候变化领域集成服务门户(CCPortal): Global ocean heat content in the Last Interglacial

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DOI	10.1038/s41561-019-0498-0
	Global ocean heat content in the Last Interglacial
	Shackleton S.; Baggenstos D.; Menking J.A.; Dyonisius M.N.; Bereiter B.; Bauska T.K.; Rhodes R.H.; Brook E.J.; Petrenko V.V.; McConnell J.R.; Kellerhals T.; Häberli M.; Schmitt J.; Fischer H.; Severinghaus J.P.
发表日期	2020
ISSN	17520894
卷号	13 期号:1
英文摘要	The Last Interglacial (129–116 thousand years ago (ka)) represents one of the warmest climate intervals of the past 800,000 years and the most recent time when sea level was metres higher than today. However, the timing and magnitude of the peak warmth varies between reconstructions, and the relative importance of individual sources that contribute to the elevated sea level (mass gain versus seawater expansion) during the Last Interglacial remains uncertain. Here we present the first mean ocean temperature record for this interval from noble gas measurements in ice cores and constrain the thermal expansion contribution to sea level. Mean ocean temperature reached its maximum value of 1.1 ± 0.3 °C warmer-than-modern values at the end of the penultimate deglaciation at 129 ka, which resulted in 0.7 ± 0.3 m of thermosteric sea-level rise relative to present level. However, this maximum in ocean heat content was a transient feature; mean ocean temperature decreased in the first several thousand years of the interglacial and achieved a stable, comparable-to-modern value by ~127 ka. The synchroneity of the peak in mean ocean temperature with proxy records of abrupt transitions in the oceanic and atmospheric circulation suggests that the mean ocean temperature maximum is related to the accumulation of heat in the ocean interior during the preceding period of reduced overturning circulation. © 2020, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
语种	英语
scopus关键词	atmospheric circulation; deglaciation; global ocean; ice core; Last Interglacial; noble gas; reconstruction; sea level; sea level change; seawater; thermal expansion
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124527
作者单位	Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Climate and Environmental Physics, Physics Institute and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; Earth & Environmental Sciences, University of Rochester, Rochester, NY, United States; Laboratory for Air Pollution / Environmental Technology, Empa, Dübendorf, Switzerland; British Antarctic Survey, Cambridge, United Kingdom; Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom; Division of Hydrologic Sciences, Desert Research Institute, Reno, NV, United States
推荐引用方式 GB/T 7714	Shackleton S.,Baggenstos D.,Menking J.A.,et al. Global ocean heat content in the Last Interglacial[J],2020,13(1).
APA	Shackleton S..,Baggenstos D..,Menking J.A..,Dyonisius M.N..,Bereiter B..,...&Severinghaus J.P..(2020).Global ocean heat content in the Last Interglacial.Nature Geoscience,13(1).
MLA	Shackleton S.,et al."Global ocean heat content in the Last Interglacial".Nature Geoscience 13.1(2020).