中国物理B ›› 2008, Vol. 17 ›› Issue (2): 736-742.doi: 10.1088/1674-1056/17/2/062

• • 上一篇    

Trend of extreme precipitation events over China in last 40 years

胡经国1, 章大全2, 封国林3   

  1. (1)College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China; (2)College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China;Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing 100081, China; (3)Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing 100081,China;The Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • 收稿日期:2007-04-21 修回日期:2007-08-08 出版日期:2008-02-20 发布日期:2008-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 40675044), the State Key Development Program for Basic Research of China (Grant No 2006CB400503), and the Laboratory for Climate Studies of China Meteorological Administration Climate Research Program (Grant No LCS-2006-04).

Trend of extreme precipitation events over China in last 40 years

Zhang Da-Quan(章大全)a)b), Feng Guo-Lin(封国林)b)c)†, and Hu Jing-Guo(胡经国)a)   

  1. a College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China; b Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing 100081, China; c The Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2007-04-21 Revised:2007-08-08 Online:2008-02-20 Published:2008-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 40675044), the State Key Development Program for Basic Research of China (Grant No 2006CB400503), and the Laboratory for Climate Studies of China Meteorological Administration Climate Research Program (Grant No LCS-2006-04).

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摘要： Using the daily precipitation data of 740 stations in China from 1960 to 2000, the analysis on the variations and distributions of the frequency and the percentage of extreme precipitation to the annual rainfall have been performed in this paper. Results indicate that the percentage of heavy rains (above 25mm/day) in the annual rainfall has increased, while on average the day number of heavy rains has slightly reduced during the past 40 years. In the end of 1970s and the beginning of 1980s, both the number of days with extreme precipitation and the percentage of extreme precipitation abruptly changed over China, especially in the northern China. By moving t test, the abrupt change year of extreme precipitation for each station and its spatial distribution over the whole country are also obtained. The abrupt change years concentrated in 1978--1982 for most regions of northern China while occurred at various stations in southern China in greatly different/diverse years. Besides the abrupt change years of extreme precipitation at part stations of Northwest China happened about 5 years later in comparison with that of the country's average.

关键词: extreme precipitation events, frequency, abrupt change, extreme events

Abstract: Using the daily precipitation data of 740 stations in China from 1960 to 2000, the analysis on the variations and distributions of the frequency and the percentage of extreme precipitation to the annual rainfall have been performed in this paper. Results indicate that the percentage of heavy rains (above 25mm/day) in the annual rainfall has increased, while on average the day number of heavy rains has slightly reduced during the past 40 years. In the end of 1970s and the beginning of 1980s, both the number of days with extreme precipitation and the percentage of extreme precipitation abruptly changed over China, especially in the northern China. By moving t test, the abrupt change year of extreme precipitation for each station and its spatial distribution over the whole country are also obtained. The abrupt change years concentrated in 1978--1982 for most regions of northern China while occurred at various stations in southern China in greatly different/diverse years. Besides the abrupt change years of extreme precipitation at part stations of Northwest China happened about 5 years later in comparison with that of the country's average.

Key words: extreme precipitation events, frequency, abrupt change, extreme events

中图分类号:  (Precipitation)

  • 92.40.Ea
92.70.Mn (Impacts of global change; global warming)