DOI: 10.1002/joc.5410
论文题名: The influence of the Pacific Decadal Oscillation on North Central China precipitation during boreal autumn
作者: Qin M. ; Li D. ; Dai A. ; Hua W. ; Ma H.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38 起始页码: e821
结束页码: e831
语种: 英语
英文关键词: autumn precipitation
; inter-decadal variability
; North Central China
; Pacific Decadal Oscillation
Scopus关键词: Climatology
; Earth atmosphere
; Atmospheric circulation
; Atmospheric teleconnection patterns
; Autumn precipitation
; Central chinas
; Cyclonic circulation
; Inter-decadal variability
; Northern Hemispheres
; Pacific decadal oscillation
; Lakes
; air-sea interaction
; atmospheric circulation
; autumn
; cyclone
; decadal variation
; low pressure
; Pacific Decadal Oscillation
; precipitation (climatology)
; teleconnection
; China
; Japan
; Lake Baikal
; Pacific Ocean
; Pacific Ocean (North)
; Russian Federation
英文摘要: Decadal variations in autumn (September–October–November, SON) precipitation over North Central China since the 1940s are investigated using observations and reanalysis data. They are found to be significantly correlated negatively with the Pacific Decadal Oscillation (PDO). Further analyses indicate that the inter-decadal changes in SON precipitation over North Central China result from anomaly patterns in the large-scale atmospheric circulation in the mid-latitude Northern Hemisphere associated with the PDO. Specifically, during the negative phase of the PDO (1945–1976 and 2003–2014), an anomalous low pressure and cyclonic circulation are seen west of Lake Baikal, while positive pressure anomalies are located over the East Asia-Japan-North Pacific region, which weakens the East Asian trough (EAT). The weakened EAT favours southerly winds over North Central China. The negative pressure anomalies around Mongolia and Lake Baikal induce large-scale ascent motion to the west of the EAT, which also produces southerly advection of warm and moist air into North Central China, leading to increased precipitation there. These results reinforce the notion that PDO has a large impact on SON rainfall over North Central China on decadal timescales and highlight the need to further examine how the PDO induces the Eurasia atmospheric teleconnection pattern (e.g. East Atlantic/Western Russia pattern). © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116993
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, China; Department of Atmospheric and Environmental Sciences, University at Albany, State University of New YorkNY, United States
Recommended Citation:
Qin M.,Li D.,Dai A.,et al. The influence of the Pacific Decadal Oscillation on North Central China precipitation during boreal autumn[J]. International Journal of Climatology,2018-01-01,38