DOI: 10.1175/jcli-d-11-00602.1
Scopus记录号: 2-s2.0-84870006290
论文题名: Energetics of the tropical Atlantic zonal mode
作者: Burls N.J. ; Reason C.J.C. ; Penven P. ; Philander S.G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 21 起始页码: 7442
结束页码: 7466
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Dynamics
; Modulation
; Nickel compounds
; Tropics
; Wind power
; Anomalous winds
; Atlantic Ocean
; Coupled process
; Energy budgets
; Interannual
; Interannual time scale
; Interannual variability
; Leadtime
; Memory mechanism
; Ocean dynamics
; Ocean model
; Sea surface temperature (SST)
; Seasonal and interannual variability
; Seasonal cycle
; Time-scales
; Tropical atlantic
; Zonal modes
; Oceanography
; air-sea interaction
; climate feedback
; El Nino
; El Nino-Southern Oscillation
; energetics
; energy budget
; La Nina
; sea surface temperature
; seasonal variation
; zonal flow
; zonal wind
; Atlantic Ocean
; Atlantic Ocean (Equatorial)
英文摘要: Sea surface temperature in the central-eastern equatorial Atlantic has a seasonal cycle far bigger than that of the Pacific, but interannual anomalies smaller than those of the Pacific. Given the amplitude of seasonal SST variability, one wonders whether the seasonal cycle in the Atlantic is so dominant that it is able to strongly influence the evolution of its interannual variability. In this study, interannual upper-ocean variability within the tropical Atlantic is viewed from an energetics perspective, and the role of ocean dynamics, in particular the role of oceanmemory, within zonalmode events is investigated. Unlike in the Pacific where seasonal and interannual variability involve distinctly different processes, the results suggest that the latter is a modulation of the former in the Atlantic, whose seasonal cycle has similarities with El Niño and La Niña in the Pacific. The ocean memory mechanism associated with the zonal mode appears to operate onmuch shorter time scales than that associated with the El Niño-Southern Oscillation, largely being associated with interannual modulations of a seasonally active delayed negative feedback response. Differences between the El Niño-Southern Oscillation and the zonal mode can then be accounted for in terms of these distinctions. Anomalous wind power over the tropical Atlantic is shown to be a potential predictor for zonal mode events. However, because zonal mode events are due to a modulation of seasonally active coupled processes, and not independent processes operating on interannual time scales as seen in the Pacific, the lead time of this potential predictability is limited. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52582
Appears in Collections: 气候变化事实与影响
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作者单位: University of Cape Town, Cape Town, South Africa; Laboratoire de Physique des Oceans (UMR 6523 CNRS, IFREMER, IRD, UBO), LMI ICEMASA, Plouzane, France; Princeton University, Princeton, NJ, United States
Recommended Citation:
Burls N.J.,Reason C.J.C.,Penven P.,et al. Energetics of the tropical Atlantic zonal mode[J]. Journal of Climate,2012-01-01,25(21)