Role of Western Pacific Oceanic Variability in the Onset of the Bay of Bengal Summer Monsoon

IOCAS-IR

	Role of Western Pacific Oceanic Variability in the Onset of the Bay of Bengal Summer Monsoon
	Feng JQ(冯俊乔); Hu DX(胡敦欣); Yu LJ(于乐江)
发表期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
	2013-01-10
出版年	2013
卷号	v.30 期号:01 页码:221-236
文献类型	CNKI期刊论文
摘要	The influence of the tropical Indo-Pacific Ocean heat content on the onset of the Bay of Bengal summer monsoon(BOBSM) onset was investigated using atmospheric data from the NCEP and ocean subsurface temperature data from the Japan Metorology Agency(JMA).Results showed that the onset time of the BOBSM is highly related to the tropical Pacific upper ocean heat content(HC),especially in the key region of the western Pacific warm pool(WPWP),during the preceding winter and spring.When the HC anomalies in the WPWP are positive(negative),the onset of the BOBSM is usually early(late).Accompanied by the variation of the convection activity over the WPWP,mainly induced by the underlying ocean temperature anomalies,the Walker circulation becomes stronger or weaker.This enhances or weakens the westerly over the tropical Indian Ocean flowing into the BOB in the boreal spring,which is essential to BOBSM onset.The possible mechanism of influence of cyclonic/anti-cyclonic circulation over the northwestern tropical Pacific on BOBSM onset is also discussed.
关键词	summer monsoon onset,ocean heat content,warm pool,Bay of Bengal
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;
CNKI专题名称	气象学;
分类号	P461
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	supported by the National Basic Research Program (973 Program)(Grant No. 2012CB417403) ; the National Natural Science Foundation of China (Grant Nos. 40890151,and 41106016)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/191024
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofSciences 2.KeyLaboratoryofOceanCirculationandWave,ChineseAcademyofSciences 3.AppliedHydrometeorologicalResearchInstitute,NanjingUniversityofInformationScienceandTechnology
推荐引用方式 GB/T 7714	Feng JQ,Hu DX,Yu LJ. Role of Western Pacific Oceanic Variability in the Onset of the Bay of Bengal Summer Monsoon. 2013.