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Asymmetry and nonlinearity of the influence of enso on the northern winter stratosphere: 1. observations
Rao, Jian1,2,3,4; Ren, Rongcai1,2,3
刊名Journal of geophysical research-atmospheres
2016-08-16
卷号121期号:15页码:9000-9016
关键词El nino-southern oscillation (enso) Northern winter stratosphere Asymmetry Nonlinearity
ISSN号2169-897X
DOI10.1002/2015jd024520
通讯作者Ren, rongcai(rrc@lasg.iap.ac.cn)
英文摘要The el nino-southern oscillation (enso) has significant effects on the extratropical stratosphere. this study explores the nonlinearity and the asymmetry of these influences by distinguishing the different effects of four types of enso: moderate el nino, strong el nino, moderate la nina, and strong la nina. it is revealed that the moderate el nino and the strong la nina are much more efficient than the strong el nino and the moderate la nina, respectively, in modulating the northern winter stratospheric variability, resulting in significant nonlinearity and asymmetry. the tropical rainfall anomalies induced by a moderate el nino or a strong la nina are centered over the central equatorial pacific region near the dateline, while the convection responses to a strong el nino or a moderate la nina are centered farther eastward. accordingly, the anomalous pacific-north america wave train pattern is modulated by enso in a nonlinear and asymmetric way, which leads to the large nonlinear and asymmetric components of the vertical eliassen-palm (e-p) flux responses to enso. the increase of planetary wave activity in the extratropical stratosphere in moderate el nino winters is thus greater than in strong el nino winters, whereas a strong la nina gives a larger decrease in propagation than a moderate la nina. the relatively strong (weak) e-p flux responses to moderate (strong), el nino and strong (moderate) la nina explains the remarkable nonlinearity and asymmetry in the response of the extratropical stratosphere to enso.
WOS关键词ASIAN SUMMER MONSOON ; SEA-SURFACE TEMPERATURE ; SOUTHERN-OSCILLATION ; EL-NINO ; LA-NINA ; INTERANNUAL VARIABILITY ; CIRCULATION FEATURES ; HEMISPHERE WINTER ; REANALYSIS ; PACIFIC
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000383372400015
内容类型期刊论文
URI标识http://www.corc.org.cn/handle/1471x/2375965
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, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, KLME, Nanjing, Jiangsu, Peoples R China
3.Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Nanjing, Jiangsu, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Rao, Jian,Ren, Rongcai. Asymmetry and nonlinearity of the influence of enso on the northern winter stratosphere: 1. observations[J]. Journal of geophysical research-atmospheres,2016,121(15):9000-9016.
APA Rao, Jian,&Ren, Rongcai.(2016).Asymmetry and nonlinearity of the influence of enso on the northern winter stratosphere: 1. observations.Journal of geophysical research-atmospheres,121(15),9000-9016.
MLA Rao, Jian,et al."Asymmetry and nonlinearity of the influence of enso on the northern winter stratosphere: 1. observations".Journal of geophysical research-atmospheres 121.15(2016):9000-9016.
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