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	A decomposition of enso's impacts on the northern winter stratosphere: competing effect of sst forcing in the tropical indian ocean
	Rao, Jian1,4; Ren, Rongcai1,2,3
刊名	Climate dynamics
	2016-06-01
卷号	46期号:11-12页码:3689-3707
关键词	El nino-southern oscillation (enso) Indian ocean basin (iob) Stratospheric polar vortex Waccm Pacific-north america pattern (pna)
ISSN号	0930-7575
DOI	10.1007/s00382-015-2797-5
通讯作者	Ren, rongcai(rrc@lasg.iap.ac.cn)
英文摘要	This study applies waccm, a stratosphere-resolving model to dissect the stratospheric responses in the northern winter extratropics to the imposed enso-related sst anomalies in the tropics. it is found that the anomalously warmer and weaker stratospheric polar vortex during warm enso is basically a balance of the opposite effects between the sst anomalies in the tropical pacific (tpo) and that over the tropical indian ocean basin (tio). specifically, the enso-related sst anomalies over the tio are to induce an anomalously colder and stronger stratospheric polar vortex during warm enso, which acts to partially cancel out the much stronger warmer and weaker polar vortex response to the sst anomalies over the tpo. further analysis indicates that, while the sst forcing from the tpo contributes to the anomalously positive pacific north america (pna) pattern in the troposphere and the enhancement of the stationary wave-number (wn)-1 in the stratosphere during warm enso, the tio sst forcing is to induce an anomalously negative pna and a reduction of both wn-1 and wn-2 in the stratosphere. diagnosis of e-p flux confirms that, the anomalously upward propagation of stationary waves in the extratropics mainly lies over the western coast of north america during warm enso, which is mainly associated with the tpo-induced positive pna response and is partially suppressed by the effect of the accompanying tio sst forcing.
WOS关键词	SEA-SURFACE TEMPERATURE ; GENERAL-CIRCULATION MODEL ; EL-NINO ; SOUTHERN-OSCILLATION ; INTERANNUAL VARIABILITY ; DOWNWARD PROPAGATION ; EXTRATROPICAL RESPONSE ; ATMOSPHERIC RESPONSE ; CLIMATE RESPONSE ; POLAR VORTEX
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000381108600019
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374374
专题	中国科学院大学
通讯作者	Ren, Rongcai
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Jiangsu, Peoples R China 3.Nanjing Univ Informat Sci & Technol, KLME, Nanjing 210044, Jiangsu, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Rao, Jian,Ren, Rongcai. A decomposition of enso's impacts on the northern winter stratosphere: competing effect of sst forcing in the tropical indian ocean[J]. Climate dynamics,2016,46(11-12):3689-3707.
APA	Rao, Jian,&Ren, Rongcai.(2016).A decomposition of enso's impacts on the northern winter stratosphere: competing effect of sst forcing in the tropical indian ocean.Climate dynamics,46(11-12),3689-3707.
MLA	Rao, Jian,et al."A decomposition of enso's impacts on the northern winter stratosphere: competing effect of sst forcing in the tropical indian ocean".Climate dynamics 46.11-12(2016):3689-3707.

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