气候变化领域集成服务门户(CCPortal): A 12-million-year temperature history of the tropical pacific ocean

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DOI	10.1126/science.1246172
	A 12-million-year temperature history of the tropical pacific ocean
	Zhang Y.G.; Pagani M.; Liu Z.
发表日期	2014
ISSN	0036-8075
起始页码	84
结束页码	87
卷号	344 期号:6179
英文摘要	The appearance of permanent El Niño-like conditions prior to 3 million years ago is founded on sea-surface temperature (SST) reconstructions that show invariant Pacific warm pool temperatures and negligible equatorial zonal temperature gradients. However, only a few SST records are available, and these are potentially compromised by changes in seawater chemistry, diagenesis, and calibration limitations. For this study, we establish new biomarker-SST records and show that the Pacific warm pool was ∼4°C warmer 12 million years ago. Both the warm pool and cold tongue slowly cooled toward modern conditions while maintaining a zonal temperature gradient of ∼3°C in the late Miocene, which increased during the Plio-Pleistocene. Our results contrast with previous temperature reconstructions that support the supposition of a permanent El Niño-like state.
英文关键词	calcium; carbonic acid; magnesium; oxygen 18; sea water; diagenesis; El Nino; paleotemperature; sea surface temperature; seawater; temperature gradient; temperature profile; warm pool; zonal flow; article; calibration; diagenesis; El Nino; nonhuman; Pacific Ocean; planktonic foraminifera; Pliocene; priority journal; sea surface temperature; Thaumarchaeota; Upper Miocene; Pacific Ocean; Pacific Ocean (Tropical)
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/246164
作者单位	Department of Geology and Geophysics, Yale University, New Haven, CT 06511, United States; Department of Earth Sciences, University of Hong Kong, Hong Kong, Hong Kong
推荐引用方式 GB/T 7714	Zhang Y.G.,Pagani M.,Liu Z.. A 12-million-year temperature history of the tropical pacific ocean[J],2014,344(6179).
APA	Zhang Y.G.,Pagani M.,&Liu Z..(2014).A 12-million-year temperature history of the tropical pacific ocean.Science,344(6179).
MLA	Zhang Y.G.,et al."A 12-million-year temperature history of the tropical pacific ocean".Science 344.6179(2014).