DOI: 10.1175/JCLI-D-15-0536.1
Scopus记录号: 2-s2.0-84960857024
论文题名: Characterization of the variability of the South Pacific convergence zone using satellite and reanalysis wind products
作者: Kidwell A. ; Lee T. ; Jo Y.-H. ; Yan X.-H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 5 起始页码: 1717
结束页码: 1732
语种: 英语
Scopus关键词: Atmospheric pressure
; Climate change
; Climate models
; Nickel
; Salinity measurement
; Decadal variability
; Enso
; Interannual variability
; Pacific decadal oscillation
; Satellite observations
; Tropical variability
; Variability
; Climatology
; algorithm
; annual variation
; atmospheric circulation
; atmospheric dynamics
; climate modeling
; decadal variation
; El Nino-Southern Oscillation
; Pacific Decadal Oscillation
; seasonal variation
; surface wind
; Pacific Ocean
; Pacific Ocean (South)
英文摘要: The variability of the South Pacific convergence zone (SPCZ) is evaluated using ocean surface wind products derived from the atmospheric reanalysis ERA-Interim for the period of 1981-2014 and QuickSCAT for the period of 1999-2009. From these products, indices were developed to represent the SPCZ strength, area, and centroid location. Excellent agreement is found between the indices derived from the two wind products during the QuikSCAT period in terms of the spatiotemporal structures of the SPCZ. The longer ERA-Interim product is used to study the variations of SPCZ properties on intraseasonal, seasonal, interannual, and decadal time scales. The SPCZ strength, area, and centroid latitude have a dominant seasonal cycle. In contrast, the SPCZ centroid longitude is dominated by intraseasonal variability due to MJO influence. The SPCZ indices are all correlated with El Niño-Southern Oscillation indices. Interannual and intraseasonal variations of SPCZ strength during strong El Niño are approximately twice as large as the respective seasonal variations. SPCZ strength depends more on the intensity of El Niño rather than the central-Pacific versus eastern-Pacific type. The change from positive to negative Pacific decadal oscillation (PDO) around 1999 results in a westward shift of the SPCZ centroid longitude, a much smaller interannual swing in centroid latitude, and a decrease in SPCZ area. This study improves the understanding of the variations of the SPCZ on multiple time scales and reveals the variations of SPCZ strength not reported previously. The diagnostics analyses can be used to evaluate climate models to gauge their fidelity. © 2016 American Meteorological Society.
资助项目: NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50210
Appears in Collections: 气候变化事实与影响
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作者单位: College of Earth, Ocean and Environment, University of Delaware, Newark, DE, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Oceanography, Pusan National University, Busan, South Korea; University of Delaware, Joint Institute of Coastal Research and Management, Newark, DE, United States; Xiamen University, China
Recommended Citation:
Kidwell A.,Lee T.,Jo Y.-H.,et al. Characterization of the variability of the South Pacific convergence zone using satellite and reanalysis wind products[J]. Journal of Climate,2016-01-01,29(5)