气候变化领域集成服务门户(CCPortal): Greatly expanded tropical warm pool and weakened hadley circulation in the early pliocene

CCPortal

DOI	10.1126/science.1167625
	Greatly expanded tropical warm pool and weakened hadley circulation in the early pliocene
	Brierley C.M.; Fedorov A.V.; Liu Z.; Herbert T.D.; Lawrence K.T.; LaRiviere J.P.
发表日期	2009
ISSN	0036-8075
起始页码	1714
结束页码	1718
卷号	323 期号:5922
英文摘要	The Pliocene warm interval has been difficult to explain. We reconstructed the latitudinal distribution of sea surface temperature around 4 million years ago, during the early Pliocene. Our reconstruction shows that the meridional temperature gradient between the equator and subtropics was greatly reduced, implying a vast poleward expansion of the ocean tropical warm pool. Corroborating evidence indicates that the Pacific temperature contrast between the equator and 32°N has evolved from ∼2°C 4 million years ago to ∼8°C today. The meridional warm pool expansion evidently had enormous impacts on the Pliocene climate, including a slowdown of the atmospheric Hadley circulation and El Niño-like conditions in the equatorial region. Ultimately, sustaining a climate state with weak tropical sea surface temperature gradients may require additional mechanisms of ocean heat uptake (such as enhanced ocean vertical mixing).
英文关键词	atmospheric circulation; El Nino; Hadley cell; paleoclimate; Pliocene; sea surface temperature; temperature gradient; tropical environment; warm pool; article; atmospheric pressure; climate; El Nino; geography; hadley circulation; latitude; ocean environment; Pacific Ocean; Pliocene; priority journal; sea surface temperature; temperature measurement; tropic climate
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/243146
作者单位	Department of Geology and Geophysics, Yale University, New Haven, CT 06520, United States; Department of Earth Sciences, University of Hong Kong, Hong Kong, Hong Kong; Department of Geological Sciences, Brown University, Providence, RI 02912, United States; Geology and Environmental Geosciences, Lafayette College, Easton, PA 18042, United States; Ocean Sciences, University of California, Santa Cruz, CA 95064, United States
推荐引用方式 GB/T 7714	Brierley C.M.,Fedorov A.V.,Liu Z.,et al. Greatly expanded tropical warm pool and weakened hadley circulation in the early pliocene[J],2009,323(5922).
APA	Brierley C.M.,Fedorov A.V.,Liu Z.,Herbert T.D.,Lawrence K.T.,&LaRiviere J.P..(2009).Greatly expanded tropical warm pool and weakened hadley circulation in the early pliocene.Science,323(5922).
MLA	Brierley C.M.,et al."Greatly expanded tropical warm pool and weakened hadley circulation in the early pliocene".Science 323.5922(2009).