DOI: 10.1175/JCLI-D-16-0422.1
Scopus记录号: 2-s2.0-85014560439
论文题名: Interdecadal changes in the relationship between ENSO, EAWM, and the wintertime precipitation over China at the end of the twentieth century
作者: Jia X. ; Ge J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 6 起始页码: 1923
结束页码: 1937
语种: 英语
Scopus关键词: Atmospheric pressure
; Climate change
; Atmospheric circulation
; Climate variability
; East Asian winter monsoon
; Inter-decadal variability
; Interannual variability
; Interdecadal changes
; Southern oscillation
; Winter precipitation
; Climatology
; annual variation
; atmospheric circulation
; climate change
; climate variation
; decadal variation
; El Nino-Southern Oscillation
; monsoon
; precipitation (climatology)
; twentieth century
; winter
; China
; Pacific Ocean
; Pacific Ocean (North)
; Pacific Ocean (Northwest)
英文摘要: The current study investigates the interdecadal changes in the relationship between the winter precipitation anomalies in southeastern China, El Niño-Southern Oscillation (ENSO), and the East Asian winter monsoon (EAWM) at the end of the twentieth century. It appears that the relationships between the interannual variability of the southeastern China winter precipitation and ENSO as well as EAWM are obviously weakened after 1998/99. The possible mechanisms accounting for this interdecadal change in the relationship have been examined by dividing the data into two subperiods [1980-98 (P1) and 1999-2015 (P2)]. The results indicate that, without the linear contribution of EAWM, ENSO only play a limited role in the variability of winter precipitation in southeastern China in both subperiods. In contrast, in P1, corresponding to an ENSO-independent weaker-than-normal EAWM, anomalous southerlies along coastal southeastern China associated with an anticyclone over the northwestern Pacific transport water vapor to China. However, in P2 the impact of EAWM on winter precipitation in southeastern China is weakened because of the regime shift of EAWM. The EAWM-related positive SLP anomalies over the North Pacific move eastward in P2, causing an eastward migration of the associated anomalous southerlies along its western flank and therefore cannot significantly contribute to the positive winter precipitation anomalies in southeastern China. © 2017 American Meteorological Society. 资助项目: NSFC, National Natural Science Foundation of China
; 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/49801
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang, China
Recommended Citation:
Jia X.,Ge J.. Interdecadal changes in the relationship between ENSO, EAWM, and the wintertime precipitation over China at the end of the twentieth century[J]. Journal of Climate,2017-01-01,30(6)