Summer upwelling in the South China Sea and its role in regional climate variations

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Summer upwelling in the South China Sea and its role in regional climate variations
	Xie, SP ; Xie, Q ; Wang, DX ; Liu, WT
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2003
卷号	108 期号:C8 页码:-3261
关键词	upwelling air-sea interaction orographically induced wind jet ocean stationary eddy South China Sea climate variability
ISSN号	0148-0227
中文摘要	Seasonal and interannual variations of summer upwelling off the South Vietnam coast and the offshore spread of cold water are investigated using a suite of new satellite measurements. In summer, as the southwesterly winds impinge on Annam Cordillera (a north-south running mountain range on the east coast of Indochina) a strong wind jet occurs at its southern tip offshore east of Saigon, resulting in strong wind curls that are important for ocean upwelling off the coast. In July and August an anticyclonic ocean eddy develops to the southeast, advecting the cold coastal water offshore into the open South China Sea (SCS). The center of this cold filament is located consistently north of the wind speed maximum, indicating that open-ocean upwelling helps to cool the ocean surface. Corroborating evidence for the cold filament is found in ocean color observations that reveal a collocated tongue of high chlorophyll concentration. The development of this cold filament disrupts the summer warming of the SCS and causes a pronounced semiannual cycle in SST. Moreover, the cold filament is an important player in interannual variability in the summer SCS. In 1998, the cold filament and mid-summer cooling never took place, giving rise to a strong basin-wide surface warming. Interannual SST variance has a local maximum over the climatological cold filament, and is much greater than the variance over the adjacent Indian and western Pacific Oceans. A cold filament index is constructed, which displays significant lagged correlation with SST in the eastern equatorial Pacific and Indian Oceans, indicative of a teleconnection from El Nino.
学科主题	Oceanography
收录类别	SCI
原文出处	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000184869200001
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/5547]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Xie, SP,Xie, Q,Wang, DX,et al. Summer upwelling in the South China Sea and its role in regional climate variations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2003,108(C8):-3261.
APA	Xie, SP,Xie, Q,Wang, DX,&Liu, WT.(2003).Summer upwelling in the South China Sea and its role in regional climate variations.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,108(C8),-3261.
MLA	Xie, SP,et al."Summer upwelling in the South China Sea and its role in regional climate variations".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 108.C8(2003):-3261.