DOI: 10.1002/jgrd.50279
论文题名: Influence of ENSO on precipitation in the East River basin, south China
作者: Zhang Q. ; Li J. ; Singh V.P. ; Xu C.-Y. ; Deng J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 5 起始页码: 2207
结束页码: 2219
语种: 英语
英文关键词: El Niño Modoki
; El Niño-Southern Oscillation (ENSO)
; Precipitation
; The East River basin
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Correlation methods
; Precipitation (chemical)
; Precipitation (meteorology)
; Statistical tests
; Water resources
; Water supply
; Watersheds
; East River basin
; Pearson correlation coefficients
; Precipitation patterns
; Probabilistic behavior
; Sea surface temperature anomalies
; Seasonal precipitations
; Southern oscillation index
; Water resources management
; Lasers
; climate modeling
; cooling
; El Nino-Southern Oscillation
; extreme event
; global climate
; precipitation (climatology)
; river basin
; sea surface temperature
; seasonality
; teleconnection
; China
; Dong Basin
英文摘要: A majority of the literature analyzing the role of El Niño-Southern Oscillation (ENSO) and other teleconnections has focused on summer precipitation and on global and regional scales. Seasonal precipitation, occurring at local scale (0,000 km2; i.e., a size of one grid cell of a typical global climate model), is of considerable importance for flood mitigation, water supply, and water resources management. In view of the relative absence of studies exploring the forces driving local precipitation, the present study examines this precipitation regime (represented by monthly precipitation data for a period of 1956-2005 from 21 gauge stations in the East River basin) as a response to well-known determining factors, i.e., Southern Oscillation Index (SOI), El Niño Modoki index (EMI), and sea surface temperature anomalies (SSTA) of Niño 1 + 2, Niño 3, Niño 4, and Niño 3.4. To achieve the goal of the study, three types of ENSO events were defined: eastern Pacific warming (EPW), central Pacific warming (CPW), and eastern Pacific cooling (EPC). Mann-Whitney U test was applied to assess whether the probabilistic behavior of precipitation in the ENSO period was different from that in the normal period. The Pearson correlation coefficient was calculated to investigate the relations between areal precipitation in the East River basin and the above-mentioned ENSO indices. Results indicated that (1) EPW caused more precipitation in autumn and winter, but less precipitation in summer. EPW even brought about extremely heavy precipitation in summer and winter. (2) CPW caused less precipitation in spring, autumn, and the annual totals. Sometimes, CPW might bring about heavy precipitation. The precipitation pattern in summer in CPW was different from the normal years. (3) EPC caused more precipitation in autumn and less precipitation in spring and winter. The middle East River basin is the region where precipitation has decreased most severely due to EPC. (4) SSTA, SOI, and EMI had significant relations with areal precipitation from January to March. EMI is the only index having significant correlation with precipitation in April. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63883
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China; Key Laboratory of Water Cycle and Water Security in Southern China, Guangdong High Education Institute, Sun Yat-sen University, Guangzhou, China; School of Geography and Planning, Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, China; Department of Geography and Resource Management, Chinese University of Hong Kong, Hong Kong, Hong Kong; Department of Biological and Agricultural Engineering, Texas AandM University, College Station TX, United States; Department of Geosciences, University of Oslo, Oslo, Norway
Recommended Citation:
Zhang Q.,Li J.,Singh V.P.,et al. Influence of ENSO on precipitation in the East River basin, south China[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(5)