A gap in the Indo-Pacific warm pool over the South China Sea in boreal winter: Seasonal development and interannual variability
Liu, QY; Jiang, X; Xie, SP; Liu, WT; liuqy@ouc.edu.cn; xie@hawaii.edu; liu@pacific.jpl.nasa.gov
2004
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN0148-0227
卷号109期号:C7页码:#NAME
摘要[1] The Indo-Pacific warm water pool in boreal winter shows a conspicuous gap over the South China Sea (SCS) where sea surface temperature (SST) is considerably lower than over the oceans both to the west and east. The formation mechanisms for the climatology and interannual variability of SCS SST in boreal winter are investigated using a suite of new satellite measurements. The winter SCS is divided into two parts by the axis of the maximum northeasterly monsoonal winds. The positive wind curl in the southeastern half of the ocean drives a cyclonic gyre circulation in the deep basin. As its western boundary current, an intense southward flow is found south of Vietnam on the continental slope separating the Sunda Shelf to the west and the deep SCS basin to the east. This slope current exceeds 0.5 m s(-1) in speed and advects cold water from the north. This cold advection results in a distinct cold tongue in the winter SST climatology. Both the slope current and the cold tongue are strongest in November to February. This winter cold tongue displays considerable interannual variability that is highly correlated with eastern equatorial Pacific SST. In an El Nino the winter monsoon weakens, causing the SCS ocean circulation to spin down. The reduced western boundary current and its thermal advection result in a warming in the SCS winter cold tongue. Both SST variance and its correlation with the El Nino-Southern Oscillation peak along the climatological cold tongue indicate that ocean dynamics are an important player in SCS climate variability.
部门归属Ocean Univ China, Phys Oceanog Lab, Qingdao 2666003, Peoples R China; Ocean Univ China, Ocean Atmosphere Interact & Climate Lab, Qingdao 2666003, Peoples R China; CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA; Univ Hawaii, SOEST, Int Pacific Res Ctr, Honolulu, HI 96822 USA; Univ Hawaii, Dept Meteorol, Honolulu, HI 96822 USA
关键词Indo-pacific Warm Pool South China Sea Cold Tongue
学科领域Oceanography
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收录类别sci
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/8485
专题海洋科技动态信息-印太暖池系统研究
通讯作者liuqy@ouc.edu.cn; xie@hawaii.edu; liu@pacific.jpl.nasa.gov
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Liu, QY,Jiang, X,Xie, SP,et al. A gap in the Indo-Pacific warm pool over the South China Sea in boreal winter: Seasonal development and interannual variability[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2004,109(C7):#NAME.
APA Liu, QY.,Jiang, X.,Xie, SP.,Liu, WT.,liuqy@ouc.edu.cn.,...&liu@pacific.jpl.nasa.gov.(2004).A gap in the Indo-Pacific warm pool over the South China Sea in boreal winter: Seasonal development and interannual variability.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,109(C7),#NAME.
MLA Liu, QY,et al."A gap in the Indo-Pacific warm pool over the South China Sea in boreal winter: Seasonal development and interannual variability".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 109.C7(2004):#NAME.
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