globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo1826
论文题名:
A combination mode of the annual cycle and the El Niño/Southern Oscillation
作者: Stuecker M.F.; Timmermann A.; Jin F.-F.; McGregor S.; Ren H.-L.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期:7
起始页码: 540
结束页码: 544
语种: 英语
Scopus关键词: annual cycle ; atmosphere-ocean coupling ; climate modeling ; El Nino-Southern Oscillation ; sea surface temperature ; seasonal variation ; temperature anomaly ; wind direction ; Pacific Ocean ; Pacific Ocean (Tropical)
英文摘要: The El Niño/Southern Oscillation (ENSO) is characterized by two main states: El Niño events defined by positive sea surface temperature anomalies in the eastern tropical Pacific Ocean and La Niña events marked by cooler surface temperatures in the same region. ENSO is broadly considered to be an oscillatory instability of the coupled ocean-atmosphere system in the tropical Pacific that shows a tight interaction with the seasonal cycle. El Niño events typically peak in the boreal winter, but the mechanism governing this phase synchronization is unclear. Here we show, using observational data and climate model experiments, that the nonlinear atmospheric response to combined seasonal and inter-annual sea surface temperature changes gives rise to a near-annual combination climate mode with periods of 10 and 15 months. Specifically, we find that the associated southward shift of westerly wind anomalies during boreal winter and spring triggers the termination of large El Niño events. We conclude that combination mode dynamics and related shifts in western tropical Pacific rainfall patterns occur most prominently during strong El Niño events. © 2013 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106761
Appears in Collections:气候减缓与适应
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作者单位: Department of Meteorology, SOEST, University of Hawai'i at Manoa, Honolulu, HI 96822, United States; IPRC, SOEST, University of Hawai'i at Manoa, Honolulu, HI 96822, United States; Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, 100081 Beijing, China; CCRC, University of New SouthWales, Sydney 2052, NSW, Australia; ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney 2052, Australia

Recommended Citation:
Stuecker M.F.,Timmermann A.,Jin F.-F.,et al. A combination mode of the annual cycle and the El Niño/Southern Oscillation[J]. Nature Geoscience,2013-01-01,6(7)
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