DOI: 10.1007/s00382-016-3268-3
Scopus记录号: 2-s2.0-84980034346
论文题名: A simple approach to quantifying the noise–ENSO interaction. Part II: the role of coupling between the warm pool and equatorial zonal wind anomalies
作者: Levine A.F.Z. ; Jin F.F. ; Stuecker M.F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期: 2017-01-02 起始页码: 19
结束页码: 37
语种: 英语
英文关键词: ENSO
; State-dependent stochastic forcing
; Westerly wind bursts
英文摘要: Stochastic forcing has been used conceptually to explain ENSO irregularity. More recently, the concept of state-dependent (multiplicative) stochastic forcing has been explored as an explanation of a number of ENSO properties. By calculating the state-dependence factor of ENSO zonal wind stress noise forcing on SST, we are able to separate the additive and multiplicative components of the wind stress noise forcing of ENSO. Spatially, the months with large additive or multiplicative components all resemble previous studies on westerly wind bursts. They differ from each other in that the wind stresses are significantly stronger during months with a large multiplicative noise component. It is further shown that when the multiplicative noise component is large, there have been large values of the wind stress noise in the preceding months. This is not true of the months when the additive component is large. The multi-month growth of the wind stress from the multiplicative noise process is shown to be related to an eastward migration of the western Pacific Warm Pool, which is coupled to the wind stress through convection. This process is shown to be significantly weakened in a climate model when the ocean and atmosphere are uncoupled. © 2016, Springer-Verlag Berlin Heidelberg. 资助项目: GEO, Directorate for Geosciences
; DOE, U.S. Department of Energy
; NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53396
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Atmospheric Science, University of Hawaii-Manoa, Honolulu, HI, United States; NOAA/PMEL, 7600 Sand Point Way NE, Seattle, WA, United States
Recommended Citation:
Levine A.F.Z.,Jin F.F.,Stuecker M.F.. A simple approach to quantifying the noise–ENSO interaction. Part II: the role of coupling between the warm pool and equatorial zonal wind anomalies[J]. Climate Dynamics,2017-01-01,48(2017-01-02)