DOI: 10.1002/joc.5683
论文题名: The northern and southern modes of East Asian winter monsoon and their relationships with El Niño-Southern Oscillation
作者: Chen X. ; Li C. ; Li X. ; Liu M.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 12 起始页码: 4509
结束页码: 4517
语种: 英语
英文关键词: East Asian winter monsoon
; El Niño-Southern Oscillation
; inter-decadal variations
; northern and southern modes
Scopus关键词: Atmospheric pressure
; Atmospheric thermodynamics
; Pressure gradient
; Climate system
; East Asian winter monsoon
; High Latitudes
; Inter-decadal variations
; Interannual variation
; northern and southern modes
; Pacific decadal oscillation
; Southern oscillation
; Climatology
; Atlantic Multidecadal Oscillation
; decadal variation
; El Nino-Southern Oscillation
; monsoon
; Pacific Decadal Oscillation
; pressure gradient
; winter
; Far East
; Pacific Ocean
英文摘要: The characteristics of the northern and southern modes of the East Asian winter monsoon (EAWM) and their relationships with El Niño-Southern Oscillation (ENSO) are further investigated in this paper using reanalysis data. The results demonstrate that the northern mode shows strong inter-decadal variations, whereas the southern mode is marked by noticeable inter-annual variations. The west–east pressure gradient plays a leading role in influencing northern mode, and both the west–east and north–south pressure gradients have significant impacts on the southern mode. The two modes are closely related, but their relationship shows inter-decadal variations. The relationship between the southern mode and ENSO is significant and stable, but the relationship between the northern mode and ENSO is unstable and shows obvious inter-decadal variations. The relationship between the northern mode and ENSO is significant before the late 1960s and after late 1990s, but it is not significant during the period between the late 1960s and late 1990s. ENSO influences the activity of northern mode mainly by changing the west–east pressure gradient. During the periods of a weak relationship between northern mode and ENSO, the variations in west–east pressure gradient may be dominated by the climate systems at mid–high latitudes, and the effects of ENSO are confined or offset. The inter-decadal variations in the relationship between northern mode and ENSO may be modulated by the Pacific Decadal Oscillation (PDO) and Atlantic Multi-decadal Oscillation (AMO), but their roles and importance have varied over time. The relationship between EAWM and ENSO and its inter-decadal variations vary with the EAWM index, which is induced by the differences between the northern and southern modes. When the EAWM index is more closely correlated with the southern (northern) mode, its relationship with ENSO is (not) significant and stable (unstable). © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116782
Appears in Collections: 气候减缓与适应
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作者单位: College of Meteorology and Oceanography, National University of Defense Technology, Nanjing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; No. 91939 Troops of PLA, Jiangmen, China
Recommended Citation:
Chen X.,Li C.,Li X.,et al. The northern and southern modes of East Asian winter monsoon and their relationships with El Niño-Southern Oscillation[J]. International Journal of Climatology,2018-01-01,38(12)