Role of Western Pacific Oceanic variability in the onset of the Bay of Bengal summer monsoon

doi:10.1007/s00376-012-2040-9

IOCAS-IR > 海洋环流与波动重点实验室

	Role of Western Pacific Oceanic variability in the onset of the Bay of Bengal summer monsoon
	Feng Junqiao 1,2; Hu Dunxin 1,2; Yu Lejiang 3; Feng, JQ
	2013
发表期刊	ADVANCES IN ATMOSPHERIC SCIENCES
ISSN	0256-1530
卷号	30 期号:1 页码:219-234
文章类型	Article
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.; 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
学科领域	Meteorology & Atmospheric Sciences
DOI	10.1007/s00376-012-2040-9
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000312636500020
WOS关键词	SOUTH CHINA SEA ; OUTGOING LONGWAVE RADIATION ; EAST ASIAN TELECONNECTION ; INTERANNUAL VARIABILITY ; SUBSURFACE TEMPERATURE ; SURFACE TEMPERATURE ; TIBETAN PLATEAU ; HEAT-SOURCES ; TRANSITION ; PRECIPITATION
WOS标题词	Science & Technology ; Physical Sciences
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16430
专题	海洋环流与波动重点实验室
通讯作者	Feng, JQ
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Appl Hydrometeorol Res Inst, Nanjing 210044, Jiangsu, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Feng Junqiao,Hu Dunxin,Yu Lejiang,et al. Role of Western Pacific Oceanic variability in the onset of the Bay of Bengal summer monsoon[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2013,30(1):219-234.
APA	Feng Junqiao,Hu Dunxin,Yu Lejiang,&Feng, JQ.(2013).Role of Western Pacific Oceanic variability in the onset of the Bay of Bengal summer monsoon.ADVANCES IN ATMOSPHERIC SCIENCES,30(1),219-234.
MLA	Feng Junqiao,et al."Role of Western Pacific Oceanic variability in the onset of the Bay of Bengal summer monsoon".ADVANCES IN ATMOSPHERIC SCIENCES 30.1(2013):219-234.

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