DOI: 10.1175/JCLI-D-12-00601.1
Scopus记录号: 2-s2.0-84883156614
论文题名: Recharge oscillator mechanisms in two types of ENSO
作者: Ren H.-L. ; Jin F.-F.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 17 起始页码: 6506
结束页码: 6523
语种: 英语
Scopus关键词: Eastern equatorial Pacific
; Eastern pacific
; Feedback process
; Heat budget analysis
; Interannual variability
; Recharge oscillator
; Sea surface temperature anomalies
; Significant surfaces
; Atmospheric pressure
; Climate change
; Frequency bands
; Lakes
; Life cycle
; Feedback
; air-sea interaction
; annual variation
; climate feedback
; El Nino-Southern Oscillation
; feedback mechanism
; heat budget
; sea surface temperature
; temperature anomaly
; thermocline
; upper ocean
; warm pool
; Pacific Ocean
; Pacific Ocean (Central)
; Pacific Ocean (East)
; Pacific Ocean (Equatorial)
英文摘要: The El Nĩno-Southern Oscillation (ENSO) tends to behave arguably as two different ''types'' or ''flavors'' in recent decades. One is the canonical cold-tongue-type ENSO with major sea surface temperature anomalies (SSTA) positioned over the eastern Pacific. The other is a warm-pool-type ENSO with SSTA centered in the central Pacific near the edge of the warm pool. In this study, the basic features and main feedback processes of these two types of ENSO are examined. It is shown that the interannual variability of upper-ocean heat content exhibits recharge-discharge processes throughout the life cycles of both the cold tongue (CT) and warm pool (WP) ENSO types. Through a heat budget analysis with focus on the interannual frequency band, the authors further demonstrate that the thermocline feedback plays a dominant role in contributing to the growth and phase transitions of both ENSO types, whereas the zonal advective feedback contributes mainly to their phase transitions. The westward shift of the SSTA center of the WP ENSO and the presence of significant surface easterly wind anomalies over the far eastern equatorial Pacific during its mature warm phase are the two main factors that lead to a reduced positive feedback for the eastern Pacific SSTA. Nevertheless, both the WP and CT ENSO can be understood to a large extent by the recharge oscillator mechanism. © 2013 American Meteorological Society. 资助项目: NSF, National Science Foundation
; NOAA, National Oceanic and Atmospheric Administration
; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51698
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Meteorology, School of Ocean and Earth Sciences and Technology, University of Hawaii at Manoa, Honolulu, HI, United States; Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, China
Recommended Citation:
Ren H.-L.,Jin F.-F.. Recharge oscillator mechanisms in two types of ENSO[J]. Journal of Climate,2013-01-01,26(17)