DOI: 10.1175/JCLI-D-17-0469.1
Scopus记录号: 2-s2.0-85041956682
论文题名: Two leading ENSO modes and El Niño types in the Zebiak-Cane model
作者: Xie R. ; Jin F.-F.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 5 起始页码: 1943
结束页码: 1962
语种: 英语
英文关键词: El Nino
; ENSO
Scopus关键词: Atmospheric pressure
; Feedback
; Linear stability analysis
; Nickel
; Stream flow
; EL Nino
; ENSO
; Heat budget analysis
; Nonlinear simulations
; Southern oscillation
; Spatial patterns
; Temporal evolution
; Zebiak-Cane model
; Climatology
; air-sea interaction
; eigenvalue
; El Nino
; El Nino-Southern Oscillation
; modeling
; sea surface temperature
; thermocline
; wind stress
; Pacific Ocean
; Pacific Ocean (Central)
; Pacific Ocean (East)
英文摘要: Modern instrumental records reveal that El Niño events differ in their spatial patterns and temporal evolutions. Attempts have been made to categorize them roughly into two main types: eastern Pacific (EP; or cold tongue) and central Pacific (CP; or warm pool) El Niño events. In this study, a modified version of the Zebiak-Cane (MZC) coupled model is used to examine the dynamics of these two types of El Niño events. Linear eigenanalysis of the model is conducted to show that there are two leading El Niño-Southern Oscillation (ENSO) modes with their SST patterns resembling those of two types of El Niño. Thus, they are referred to as the EP and CP ENSO modes. These two modes are sensitive to changes in the mean states. The heat budget analyses demonstrate that the EP (CP) mode is dominated by thermocline (zonal advective) feedback. Therefore, the weak (strong) mean wind stress and deep (shallow) mean thermocline prefer the EP (CP) ENSO mode because of the relative dominance of thermocline (zonal advective) feedback under such a mean state. Consistent with the linear stability analysis, the occurrence ratio of CP/EP El Niño events in the nonlinear simulations generally increases toward the regime where the linear CP ENSO mode has relatively higher growth rate. These analyses suggest that the coexistence of two leading ENSO modes is responsible for two types of El Niño simulated in the MZC model. This model result may provide a plausible scenario for the observed ENSO diversity. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111622
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Ocean and Climate Dynamics, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Department of Atmospheric Sciences, School of Ocean and Earth Science and Technology, University of Hawai'i at Manoa, Honolulu, HI, United States
Recommended Citation:
Xie R.,Jin F.-F.. Two leading ENSO modes and El Niño types in the Zebiak-Cane model[J]. Journal of Climate,2018-01-01,31(5)