Orographic effects on South China Sea summer climate

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)

	Orographic effects on South China Sea summer climate
	Xu, H ; Xie, SP ; Wang, Y ; Zhuang, W ; Wang, D
刊名	METEOROLOGY AND ATMOSPHERIC PHYSICS
	2008
卷号	100 期号:40547 页码:275-289
ISSN号	0177-7971
通讯作者	haimingx@gmail.com
中文摘要	New satellite observations reveal several distinct features of the South China Sea (SCS) summer climate: an intense low-level southwesterly wind jet off the coast of South Vietnam, a precipitation band on the western flank of the north-south running Annam mountain range, and a rainfall shadow to the east in the western SCS off the east coast of Vietnam. A high-resolution full-physics regional atmospheric model is used to investigate the mechanism for the formation of SCS summer climate. A comparison of the control model simulation with a sensitivity experiment with the mountain range artificially removed demonstrates that the aforementioned features form due to orographic effects of the Annam mountains. Under the prevailing southwesterly monsoon, the mountain range forces the ascending motion on the windward and subsidence on the lee side, giving rise to bands of active and suppressed convection, respectively. On the south edge of the mountain range, the southwesterlies are accelerated to form an offshore low-level wind jet. The mid-summer cooling in the SCS induced by this wind jet further helps reduce precipitation over the central SCS. A reduced-gravity ocean model is used to investigate the ocean response to the orographically induced wind forcing, which is found to be important for the formation of the double-gyre circulation observed in the summer in SCS, in particular for the northern cyclonic circulation. Thus, orography is a key to shaping the SCS summer climate both in the atmosphere and in the ocean.
学科主题	Meteorology & Atmospheric Sciences
收录类别	SCI
原文出处	AUG
WOS记录号	WOS:000258675400019
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/5975]
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	Xu, H,Xie, SP,Wang, Y,et al. Orographic effects on South China Sea summer climate[J]. METEOROLOGY AND ATMOSPHERIC PHYSICS,2008,100(40547):275-289.
APA	Xu, H,Xie, SP,Wang, Y,Zhuang, W,&Wang, D.(2008).Orographic effects on South China Sea summer climate.METEOROLOGY AND ATMOSPHERIC PHYSICS,100(40547),275-289.
MLA	Xu, H,et al."Orographic effects on South China Sea summer climate".METEOROLOGY AND ATMOSPHERIC PHYSICS 100.40547(2008):275-289.