DOI: 10.1007/s00382-014-2207-4
Scopus记录号: 2-s2.0-84932192460
论文题名: Role of intraseasonal oscillation in asymmetric impacts of El Niño and La Niña on the rainfall over southern China in boreal winter
作者: Zhang R. ; Li T. ; Wen M. ; Liu L.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-03-04 起始页码: 559
结束页码: 567
语种: 英语
英文关键词: El Niño and La Niña
; Intraseasonal oscillation
; Rainfall over southern China
; Winter half year
英文摘要: The impacts of El Niño and La Niña on the rainfall over southern China in winter half year (November–April) are investigated diagnostically. It is found that positive rainfall anomalies with statistical significance appear over southern China in El Niño winter but no reversed significant rainfall anomalies in La Niña winter. The asymmetry of the rainfall anomalies are related with the asymmetry in anomalous circulation over western North Pacific (WNP) in lower troposphere, with a strong anomalous anticyclone in El Niño winter but a weak anomalous cyclone in La Niña winter. It is revealed that the asymmetric responses in anomalous circulation to El Nino and La Niña are affected by the intraseasonal oscillation (ISO). In El Niño winter the interannual variation is dominant and the ISO is weak, and the strong interannual variation leads to a strong response of the anomalous anticyclone over WNP in winter half year. However, in La Niña winter the ISO is dominant and the interannual variation is weak, and the weak interannual variation results in a weak response of the anomalous cyclone over WNP. © 2014, Springer-Verlag Berlin Heidelberg. 资助项目: NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54063
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Severe Weather (LaSW), Chinese Academy of Meteorological Sciences, 46 Zhong-Guan-Cun South Avenue, Haidian District, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Guangzhou Central Weather Observatory, Guangzhou, China; Nanjing University of Information Science and Technology, Nanjing, China
Recommended Citation:
Zhang R.,Li T.,Wen M.,et al. Role of intraseasonal oscillation in asymmetric impacts of El Niño and La Niña on the rainfall over southern China in boreal winter[J]. Climate Dynamics,2015-01-01,45(2017-03-04)