DOI: 10.1002/joc.5703
论文题名: Dominant modes of wintertime precipitation variability in northwest China and the association with circulation anomalies and sea surface temperature
作者: Yin X. ; Zhou L.-T.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 13 起始页码: 4860
结束页码: 4874
语种: 英语
英文关键词: AO teleconnection pattern
; belt and road initiative
; EU teleconnection pattern
; northwest China
; sea surface temperature
; wintertime precipitation
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climatology
; Economic and social effects
; Losses
; Orthogonal functions
; Precipitation (meteorology)
; Submarine geophysics
; Surface properties
; Surface waters
; Atmospheric circulation anomaly
; Empirical orthogonal function methods
; North Atlantic oscillations
; NorthWest China
; Sea surface temperature (SST)
; Sea surface temperature anomalies
; Spatiotemporal variability
; Teleconnection patterns
; Oceanography
; Arctic Oscillation
; atmospheric circulation
; climate prediction
; El Nino-Southern Oscillation
; empirical orthogonal function analysis
; North Atlantic Oscillation
; precipitation (climatology)
; sea surface temperature
; spatiotemporal analysis
; teleconnection
; temperature anomaly
; winter
; Central Asia
; China
英文摘要: The dominant modes wintertime precipitation in northwest China (NWC) and the possible causes are investigated during the period 1961–2013 in the inter-annual timescale, as winter climate condition could greatly affect local economic development and people's lives. The analysis of this study is divided into three parts. First, the spatiotemporal variability of dominant modes wintertime precipitation is described by an empirical orthogonal function (EOF) method. The atmospheric circulation anomalies associated with wintertime precipitation variations are then discussed through regression and composite analysis. Third, the relationships between wintertime precipitation and sea surface temperature (SST) anomalies are investigated. The results indicate that the leading mode (EOF1) shows a uniform sign in the entire region, and the second mode (EOF2) exhibits a zonal-dipole pattern; they account for 25.6 and 15.7% of the total variance, respectively. The atmospheric circulation anomalies EOF1 closely related to is the Eurasian (EU) teleconnection pattern. Years when a negative phase of EU pattern occurs tend to be rainy with anomalous southerly transporting water vapour from low-latitudes and profound ascending motion anomalies. Atmospheric circulation anomalies associated with the second mode resemble the Arctic Oscillation (AO) pattern. AO pattern influences EOF2 precipitation variations through the anomalous circulations over Mongolia and western Europe. The sea surface temperature (SST) anomalies related to EOF1 show an El Niño-Southern Oscillation (ENSO) like pattern, which may modulate the wintertime precipitation mode through the western North Pacific anticyclone. The EOF2 mode has a close relationship with a tripole SST anomaly mode in the North Atlantic Ocean. This SST pattern is likely to influence wintertime precipitation by modulating the North Atlantic Oscillation (NAO). The results of this study could be beneficial for wintertime precipitation prediction and the decrease of economic losses in NWC and may also provide useful references for other areas with similar climatic features such as the central Asia. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116757
Appears in Collections: 气候减缓与适应
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作者单位: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Yin X.,Zhou L.-T.. Dominant modes of wintertime precipitation variability in northwest China and the association with circulation anomalies and sea surface temperature[J]. International Journal of Climatology,2018-01-01,38(13)