DOI: 10.1175/JCLI-D-14-00202.1
Scopus记录号: 2-s2.0-84916200932
论文题名: Variability in the South Atlantic anticyclone and the Atlantic Niño mode
作者: Lübbecke J.F. ; Burls N.J. ; Reason C.J.C. ; Mcphaden M.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 21 起始页码: 8135
结束页码: 8150
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate change
; Coastal zones
; Submarine geophysics
; Surface properties
; Surface waters
; Tropics
; Wave propagation
; Wind power
; Air sea interactions
; Eastern equatorial Atlantic
; Interannual variability
; Kelvin wave propagation
; Sea surface temperature (SST)
; Sea surface temperature anomalies
; Tropical variability
; Wind power variations
; Oceanography
; air-sea interaction
; anticyclone
; high pressure system
; sea surface temperature
; spatial variation
; temperature anomaly
; tropical meteorology
; Atlantic Ocean
; Atlantic Ocean (Equatorial)
; Atlantic Ocean (South)
英文摘要: Previous studies have argued that the strength of the SouthAtlantic subtropical high pressure system, referred to as the South Atlantic anticyclone (SAA), modulates sea surface temperature (SST) anomalies in the eastern equatorial Atlantic. Using ocean and atmosphere reanalysis products, it is shown here that the strength of the SAA from February toMay impacts the timing of the cold tongue onset and the intensity of its development in the eastern equatorialAtlantic via anomalous tropical wind power. Thismodulation in the timing and amplitude of seasonal cold tongue developmentmanifests itself via SST anomalies peaking between June andAugust. The timing and impact of this connection is not completely symmetric for warm and cold events. For cold events, an anomalously strong SAAin February andMarch leads to positive wind power anomalies fromFebruary to June resulting in an early cold tongue onset and subsequent cold SST anomalies in June and July. For warm events, the anomalouslyweakSAApersists untilMay, generating negativewind panomalies that lead to a late cold tongue onset as well as a suppression of the cold tongue development and associated warm SST anomalies. Mechanisms by which SAA-induced wind power variations south of the equator influence eastern equatorial Atlantic SST are discussed, including ocean adjustment via Rossby and Kelvin wave propagation, meridional advection, and local intraseasonal wind variations. © 2014 American Meteorological Society. 资助项目: 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/51069
Appears in Collections: 气候变化事实与影响
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作者单位: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Seattle, WA, United States; Department of Geology and Geophysics, Yale University, New Haven, CT, United States; Department of Oceanography, University of Cape Town, Cape Town, South Africa; GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Recommended Citation:
Lübbecke J.F.,Burls N.J.,Reason C.J.C.,et al. Variability in the South Atlantic anticyclone and the Atlantic Niño mode[J]. Journal of Climate,2014-01-01,27(21)