DOI: 10.1007/s00382-014-2123-7
Scopus记录号: 2-s2.0-84899953932
论文题名: Indo-Pacific remote forcing in summer rainfall variability over the South China Sea
作者: He Z. ; Wu R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-09-10 起始页码: 2323
结束页码: 2337
语种: 英语
英文关键词: Equatorial central Pacific SST
; Indirect influence of Pacific SST
; North Indian Ocean SST
; Numerical experiments
; South China Sea summer rainfall
英文摘要: This study investigates summer rainfall variability in the South China Sea (SCS) region and the roles of remote sea surface temperature (SST) forcing in the tropical Indian and Pacific Ocean regions. The SCS summer rainfall displays a positive and negative relationship with simultaneous SST in the equatorial central Pacific (ECP) and the North Indian Ocean (NIO), respectively. Positive ECP SST anomalies induce an anomalous low-level cyclone over the SCS-western North Pacific as a Rossby-wave type response, leading to above-normal precipitation over northern SCS. Negative NIO SST anomalies contribute to anomalous cyclonic winds over the western North Pacific by an anomalous east-west vertical circulation north of the equator, favoring more rainfall over northern SCS. These NIO SST anomalies are closely related to preceding La Niña and El Niño events through the "atmospheric bridge". Thus, the NIO SST anomalies serve as a medium for an indirect impact of preceding ECP SST anomalies on the SCS summer rainfall variability. The ECP SST influence is identified to be dominant after 1990 and the NIO SST impact is relatively more important during 1980s. These Indo-Pacific SST effects are further investigated by conducting numerical experiments with an atmospheric general circulation model. The consistency between the numerical experiments and the observations enhances the credibility of the Indo-Pacific SST influence on the SCS summer rainfall variability. © 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/54540
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China; Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
Recommended Citation:
He Z.,Wu R.. Indo-Pacific remote forcing in summer rainfall variability over the South China Sea[J]. Climate Dynamics,2014-01-01,42(2017-09-10)