DOI: 10.1007/s00382-013-1760-6
Scopus记录号: 2-s2.0-84894306611
论文题名: Interdecadal change of the controlling mechanisms for East Asian early summer rainfall variation around the mid-1990s
作者: Yim S.-Y. ; Wang B. ; Kwon M.H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-05-06 起始页码: 1325
结束页码: 1333
语种: 英语
英文关键词: East Asian summer monsoon
; El Nino-Southern Oscillation (ENSO)
; North Atlantic Oscillation (NAO)
; Philippine Sea anticyclone
; Prediction
英文摘要: East Asian (EA) summer monsoon shows considerable differences in the mean state and principal modes of interannual variation between early summer (May-June, MJ) and late summer (July-August, JA). The present study focuses on the early summer (MJ) precipitation variability. We find that the interannual variation of the MJ precipitation and the processes controlling the variation have been changed abruptly around the mid-1990s. The rainfall anomaly represented by the leading empirical orthogonal function has changed from a dipole-like pattern in pre-95 epoch (1979-1994) to a tripole-like pattern in post-95 epoch (1995-2010); the prevailing period of the corresponding principal component has also changed from 3-5 to 2-3 years. These changes are concurrent with the changes of the corresponding El Nino-Southern Oscillation (ENSO) evolutions. During the pre-95 epoch, the MJ EA rainfall anomaly is coupled to a slow decay of canonical ENSO events signified by an eastern Pacific warming, which induces a dipole rainfall feature over EA. On the other hand, during the post-95 epoch the anomalous MJ EA rainfall is significantly linked to a rapid decay of a central Pacific warming and a distinct tripolar sea surface temperature (SST) in North Atlantic. The central Pacific warming-induced Philippine Sea anticyclone induces an increased rainfall in southern China and decreased rainfall in central eastern China. The North Atlantic Oscillation-related tripolar North Atlantic SST anomaly induces a wave train that is responsible for the increase northern EA rainfall. Those two impacts form the tripole-like rainfall pattern over EA. Understanding such changes is important for improving seasonal to decadal predictions and long-term climate change in EA. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: National Research Foundation
; NOAA, National Oceanic and Atmospheric Administration
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54274
Appears in Collections: 过去全球变化的重建
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作者单位: International Pacific Research Center (IPRC), University of Hawaii at Manoa, POST Bldg, 1680 East-West Road, Honolulu, HI, 96822, United States; Department of Meteorology, University of Hawaii at Manoa, Honolulu, HI, 96822, United States; Korea Institute of Ocean Science and Technology, Ansan, South Korea
Recommended Citation:
Yim S.-Y.,Wang B.,Kwon M.H.. Interdecadal change of the controlling mechanisms for East Asian early summer rainfall variation around the mid-1990s[J]. Climate Dynamics,2014-01-01,42(2017-05-06)