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	Relative contributions of the indian ocean and local sst anomalies to the maintenance of the western north pacific anomalous anticyclone during the el nino decaying summer
	Wu, Bo3,4; Li, Tim1,2; Zhou, Tianjun3
刊名	Journal of climate
	2010-06-01
卷号	23期号:11页码:2974-2986
ISSN号	0894-8755
DOI	10.1175/2010jcli3300.1
通讯作者	Li, tim(timli@hawaii.edu)
英文摘要	To investigate the relative role of the cold sst anomaly (ssta) in the western north pacific (wnp) or indian ocean basin mode (iobm) in maintaining an anomalous anticyclone over the western north pacific (wnpac) during the el nino decaying summer, a suite of numerical experiments is performed using an atmospheric general circulation model, echam4. in sensitive experiments, the el nino composite ssta is specified in either the wnp or the tropical indian ocean, while the climatological sst is specified elsewhere. the results indicate that the wnpac is maintained by the combined effects of the local forcing of the negative ssta in the wnp and the remote forcing from the iobm. the former (latter) contribution gradually weakens (enhances) from june to august. the negative ssta in the wnp is crucial for the maintenance of the wnpac in early summer. however, because of a negative air-sea feedback, the negative ssta gradually decays, as does the local forcing effect. enhanced local convection associated with the iobm stimulates atmospheric kelvin waves over the equatorial western pacific. the impact of the kelvin waves on the wnp circulation depends on the formation of the climatological wnp monsoon trough, which does not fully establish until late summer. therefore, the iobm plays a crucial role in late summer via the kelvin wave induced anticyclonic shear and boundary layer divergence.
WOS关键词	SEA-SURFACE TEMPERATURE ; EAST ASIAN TELECONNECTION ; PART II ; INTERANNUAL VARIABILITY ; INTERDECADAL VARIATIONS ; AUSTRALIAN MONSOON ; ENSO ; CLIMATE ; PRECIPITATION ; 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:000278783300011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2414577
专题	中国科学院大学
通讯作者	Li, Tim
作者单位	1.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA 2.Univ Hawaii Manoa, Dept Meteorol, Honolulu, HI 96822 USA 3.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wu, Bo,Li, Tim,Zhou, Tianjun. Relative contributions of the indian ocean and local sst anomalies to the maintenance of the western north pacific anomalous anticyclone during the el nino decaying summer[J]. Journal of climate,2010,23(11):2974-2986.
APA	Wu, Bo,Li, Tim,&Zhou, Tianjun.(2010).Relative contributions of the indian ocean and local sst anomalies to the maintenance of the western north pacific anomalous anticyclone during the el nino decaying summer.Journal of climate,23(11),2974-2986.
MLA	Wu, Bo,et al."Relative contributions of the indian ocean and local sst anomalies to the maintenance of the western north pacific anomalous anticyclone during the el nino decaying summer".Journal of climate 23.11(2010):2974-2986.

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