DOI: 10.1002/2014GL059573
论文题名: The impact of westerly wind bursts on the diversity and predictability of El Niño events: An ocean energetics perspective
作者: Hu S. ; Fedorov A.V. ; Lengaigne M. ; Guilyardi E.
刊名: Geophysical Research Letters
ISSN: 0094-9985
EISSN: 1944-9716
出版年: 2014
卷: 41, 期: 13 起始页码: 4654
结束页码: 4663
语种: 英语
英文关键词: El Niño predictability
; ENSO diversity
; ocean energetics
; westerly wind bursts
Scopus关键词: Computer simulation
; Oceanography
; Coupled modeling
; Diagnostic tools
; Eastern pacific
; ENSO diversity
; Initial state
; Keypoints
; Ocean energetics
; Westerly wind bursts
; Wind stress
英文摘要: In this study, we apply ocean energetics as a diagnostic tool to investigate the impact of westerly wind bursts (WWBs) on the evolution, diversity, and predictability of El Niño events. Following Fedorov et al. (2014), we add an observed WWB to simulations within a comprehensive coupled model and explore changes in the available potential energy (APE) of the tropical Pacific basin. We find that WWB impacts strongly depend on the ocean initial state and can range from a Central Pacific (CP) to Eastern Pacific (EP) warming, which is closely reflected by the ocean energetics. Consequently, the APE can be used to quantify the diversity of El Niño events within this continuum - higher negative APE values typically correspond to EP events, lower values to CP events. We also find that a superimposed WWB enhances El Niño predictability even before the spring predictability barrier, if one uses the APE as a predictor. Key Points Ocean energetics is powerful in studying the impact of WWBs on ENSO diversity APE provides a good proxy to quantify the diversity of El Niño events WWBs could enhance ENSO predictability even before spring prediction barrier ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903422433&doi=10.1002%2f2014GL059573&partnerID=40&md5=c08b31b5c7af7f7fb369c8dee720a110
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7249
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geology and Geophysics, Yale University, New Haven CT, United States
Recommended Citation:
Hu S.,Fedorov A.V.,Lengaigne M.,et al. The impact of westerly wind bursts on the diversity and predictability of El Niño events: An ocean energetics perspective[J]. Geophysical Research Letters,2014-01-01,41(13).