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	Why the western pacific subtropical high has extended westward since the late 1970s
	Zhou, Tianjun1; Yu, Rucong1; Zhang, Jie1,2; Drange, Helge3,4; Cassou, Christophe5; Deser, Clara6; Hodson, Daniel L. R.7; Sanchez-Gomez, Emilia5; Li, Jian1,2; Keenlyside, Noel8
刊名	Journal of climate
	2009-04-01
卷号	22期号:8页码:2199-2215
ISSN号	0894-8755
DOI	10.1175/2008jcli2527.1
通讯作者	Zhou, tianjun(zhoutj@lasg.iap.ac.cn)
英文摘要	The western pacific subtropical high (wpsh) is closely related to asian climate. previous examination of changes in the wpsh found a westward extension since the late 1970s, which has contributed to the inter-decadal transition of east asian climate. the reason for the westward extension is unknown, however. the present study suggests that this significant change of wpsh is partly due to the atmosphere's response to the observed indian ocean-western pacific (iwp) warming. coordinated by a european union's sixth framework programme, understanding the dynamics of the coupled climate system (dynamite), five agcms were forced by identical idealized sea surface temperature patterns representative of the iwp warming and cooling. the results of these numerical experiments suggest that the negative heating in the central and eastern tropical pacific and increased convective heating in the equatorial indian ocean/ maritime continent associated with iwp warming are in favor of the westward extension of wpsh. the sst changes in iwp influences the walker circulation, with a subsequent reduction of convections in the tropical central and eastern pacific, which then forces an enso/gill-type response that modulates the wpsh. the monsoon diabatic heating mechanism proposed by rodwell and hoskins plays a secondary reinforcing role in the westward extension of wpsh. the low-level equatorial flank of wpsh is interpreted as a kelvin response to monsoon condensational heating, while the intensified poleward flow along the western flank of wpsh is in accord with sverdrup vorticity balance. the iwp warming has led to an expansion of the south asian high in the upper troposphere, as seen in the reanalysis.
WOS关键词	ASIAN SUMMER MONSOON ; SEA-SURFACE TEMPERATURE ; NORTH PACIFIC ; INTERANNUAL VARIABILITY ; INTERDECADAL VARIATIONS ; CUMULUS CONVECTION ; SEASONAL CYCLE ; CLIMATE-CHANGE ; PART II ; CIRCULATION
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000266002800019
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2399119
专题	中国科学院大学
通讯作者	Zhou, Tianjun
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100029, Peoples R China 3.Nansen Environm & Remote Sensing Ctr, Bergen, Norway 4.Bjerknes Ctr Climate Res, Bergen, Norway 5.CNRS CERFACS, Toulouse, France 6.Natl Ctr Atmospher Res, Boulder, CO 80307 USA 7.Univ Reading, Ctr Atmospher Modeling, Reading, Berks, England 8.Leibniz Inst Marine Sci, D-24105 Kiel, Germany
推荐引用方式 GB/T 7714	Zhou, Tianjun,Yu, Rucong,Zhang, Jie,et al. Why the western pacific subtropical high has extended westward since the late 1970s[J]. Journal of climate,2009,22(8):2199-2215.
APA	Zhou, Tianjun.,Yu, Rucong.,Zhang, Jie.,Drange, Helge.,Cassou, Christophe.,...&Okumura, Yuko.(2009).Why the western pacific subtropical high has extended westward since the late 1970s.Journal of climate,22(8),2199-2215.
MLA	Zhou, Tianjun,et al."Why the western pacific subtropical high has extended westward since the late 1970s".Journal of climate 22.8(2009):2199-2215.

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