globalchange  > 气候变化与战略
DOI: 10.1038/s41561-019-0498-0
论文题名:
Global ocean heat content in the Last Interglacial
作者: 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.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2020
卷: 13, 期:1
起始页码: 77
结束页码: 81
语种: 英语
英文关键词: atmospheric circulation ; deglaciation ; global ocean ; ice core ; Last Interglacial ; noble gas ; reconstruction ; sea level ; sea level change ; seawater ; thermal expansion
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169676
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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

Recommended Citation:
Shackleton S.,Baggenstos D.,Menking J.A.,et al. Global ocean heat content in the Last Interglacial[J]. Nature Geoscience,2020-01-01,13(1)
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