气候变化领域集成服务门户(CCPortal): Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries

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DOI	10.1038/s41561-019-0353-3
	Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries
	Freund M.B.; Henley B.J.; Karoly D.J.; McGregor H.V.; Abram N.J.; Dommenget D.
发表日期	2019
ISSN	17520894
卷号	12 期号:6
英文摘要	El Niño events differ substantially in their spatial pattern and intensity. Canonical Eastern Pacific El Niño events have sea surface temperature anomalies that are strongest in the far eastern equatorial Pacific, whereas peak ocean warming occurs further west during Central Pacific El Niño events. The event types differ in their impacts on the location and intensity of temperature and precipitation anomalies globally. Evidence is emerging that Central Pacific El Niño events have become more common, a trend that is projected by some studies to continue with ongoing climate change. Here we identify spatial and temporal patterns in observed sea surface temperatures that distinguish the evolution of Eastern and Central Pacific El Niño events in the tropical Pacific. We show that these patterns are recorded by a network of 27 seasonally resolved coral records, which we then use to reconstruct Central and Eastern Pacific El Niño activity for the past four centuries. We find a simultaneous increase in Central Pacific events and a decrease in Eastern Pacific events since the late twentieth century that leads to a ratio of Central to Eastern Pacific events that is unusual in a multicentury context. Compared to the past four centuries, the most recent 30 year period includes fewer, but more intense, Eastern Pacific El Niño events. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	decadal variation; global warming; precipitation (climatology); reconstruction; sea surface temperature; spatial variation; temperature anomaly; twentieth century; Pacific Ocean; Pacific Ocean (Central); Pacific Ocean (East); Anthozoa
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/124658
作者单位	School of Earth Sciences, University of Melbourne, Parkville, VIC, Australia; ARC Centre of Excellence for Climate System Science, University of Melbourne, Parkville, VIC, Australia; Climate and Energy College, University of Melbourne, Parkville, VIC, Australia; ARC Centre of Excellence for Climate Extremes, University of Melbourne, Parkville, VIC, Australia; School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC, Australia; NESP Earth Systems and Climate Change Hub, CSIRO, Aspendale, VIC, Australia; School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW, Australia; Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia; ARC Centre of Excellence for Climate Extremes, Australian National University, Canberra, ACT, Australia; ARC Centre of Excellence for Climate Extremes, Monash University, Clayton, VIC, Australia
推荐引用方式 GB/T 7714	Freund M.B.,Henley B.J.,Karoly D.J.,et al. Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries[J],2019,12(6).
APA	Freund M.B.,Henley B.J.,Karoly D.J.,McGregor H.V.,Abram N.J.,&Dommenget D..(2019).Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries.Nature Geoscience,12(6).
MLA	Freund M.B.,et al."Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries".Nature Geoscience 12.6(2019).