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	Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western north pacific
	Chen Guanghua1,2; Huang Ronghui1
刊名	Advances in atmospheric sciences
	2008-03-01
卷号	25期号:2页码:319-328
关键词	Monsoon Warm pool Interannual variation Tropical cyclone
ISSN号	0256-1530
DOI	10.1007/s00376-008-0319-7
通讯作者	Chen guanghua(cgh@mail.iap.ac.cn)
英文摘要	The relationship between the interannual variation in tropical cyclone (tc) activity over the western north pacific (wnp) and the thermal state over the warm pool (wp) is examined in this paper. the results show that the subsurface temperature in the wp is well correlated with tc geographical distribution and track type. their relation is linked by the east asian monsoon trough. during the warm years, the westward-retreating monsoon trough creates convergence and vorticity fields that are favorable for tropical cyclogenesis in the northwest of the wnp, whereas more tcs concentrating in the southeast result from eastward penetration of the monsoon trough during the cold years. the steering flows at 500 hpa lead to a westward displacement track in the warm years and recurving prevailing track in the cold years. the two types of distinct processes in the monsoon environment triggering tropical cyclogenesis are hypothesized by composites centered for tc genesis location corresponding to two kinds of thermal states of the wp. during the warm years, low-frequency intraseasonal oscillation is active in the west of the wnp such that eastward-propagating westerlies cluster tc genesis in that region. in contrast, during the cold years, the increased cyclogenesis in the southeast of the wnp is mainly associated with tropical depression type disturbances transiting from equatorially trapped mixed rossby gravity waves. both of the processes may be fundamental mechanisms for the inherent interannual variation in tc activity over the wnp.
WOS关键词	MADDEN-JULIAN OSCILLATION ; STORM FORMATION ; GCM SIMULATION ; EL-NINO ; PART I ; ENSO ; SUMMER ; DISTURBANCES ; MODULATION ; CONVECTION
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000254023500013
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2386124
专题	中国科学院大学
通讯作者	Chen Guanghua
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen Guanghua,Huang Ronghui. Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western north pacific[J]. Advances in atmospheric sciences,2008,25(2):319-328.
APA	Chen Guanghua,&Huang Ronghui.(2008).Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western north pacific.Advances in atmospheric sciences,25(2),319-328.
MLA	Chen Guanghua,et al."Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western north pacific".Advances in atmospheric sciences 25.2(2008):319-328.

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