Signals of the South China Sea summer rainfall variability in the Indian Ocean

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)

	Signals of the South China Sea summer rainfall variability in the Indian Ocean
	He, Zhuoqi; Wu, Renguang; Wang, Weiqiang
刊名	CLIMATE DYNAMICS
	2016
卷号	46 期号:2016-09-10 页码:3181-3195
关键词	South China Sea summer rainfall Winter western-equatorial Indian Ocean SST Spring asymmetric mode Summer South Indian Ocean SST CESM-CAM
通讯作者	Wu, RG (reprint author), Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100029, Peoples R China. ; Wu, RG (reprint author), Chinese Univ Hong Kong, Inst Space & Earth Informat Sci, Hong Kong, Hong Kong, Peoples R China. ; Wu, RG (reprint author), Chinese Univ Hong Kong, Shenzhen Res Inst, Hong Kong, Hong Kong, Peoples R China.
中文摘要	The present study investigates signals of the South China Sea (SCS) summer rainfall variability in the Indian Ocean. It is found that the SCS summer rainfall has a negative relationship with December-January-February (DJF) western-equatorial Indian Ocean (WIO) sea surface temperature (SST), a positive relationship with an asymmetric mode of precipitation anomalies in the tropical Indian Ocean during March-April-May (MAM), and a positive relationship with June-July-August (JJA) South Indian Ocean (SIO) SST. The WIO SST anomalies induce same-sign southeast Indian Ocean SST anomalies through an anomalous zonal vertical circulation. The southeast Indian Ocean SST anomalies last from late winter to early summer and induce opposite-sign SCS summer rainfall anomalies via an anomalous meridional vertical circulation. The asymmetric mode influences the SCS summer rainfall variation via the North Indian Ocean (NIO) SST anomalies with significant cloud-radiation and wind-evaporation effect. Positive (negative) SIO SST anomalies drive an anomalous direct circulation between the SIO and the NIO, and an anomalous indirect circulation between the NIO and the SCS which facilitates the occurrence of cyclonic (anti-cyclonic) wind anomalies over the SCS-western North Pacific and results in positive (negative) SCS summer rainfall anomalies. Partial correlation analysis indicates that the influence of DJF WIO SST anomalies and JJA SIO SST anomalies on the SCS summer rainfall is partly ENSO-independent, while the MAM asymmetric mode is mostly related to the preceding DJF eastern Pacific SST anomalies.
学科主题	Meteorology & Atmospheric Sciences
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15371]
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	He, Zhuoqi,Wu, Renguang,Wang, Weiqiang. Signals of the South China Sea summer rainfall variability in the Indian Ocean[J]. CLIMATE DYNAMICS,2016,46(2016-09-10):3181-3195.
APA	He, Zhuoqi,Wu, Renguang,&Wang, Weiqiang.(2016).Signals of the South China Sea summer rainfall variability in the Indian Ocean.CLIMATE DYNAMICS,46(2016-09-10),3181-3195.
MLA	He, Zhuoqi,et al."Signals of the South China Sea summer rainfall variability in the Indian Ocean".CLIMATE DYNAMICS 46.2016-09-10(2016):3181-3195.