SCIENTIA GEOGRAPHICA SINICA ›› 1996, Vol. 16 ›› Issue (1): 3-9.doi: 10.13249/j.cnki.sgs.1996.01.3

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CHINESE PRECIPITATION PATTERNS IN FLOOD SEASON ASSOCIATED WITH THE EL NINO/SOUTHERN OSCILLATION

Qian Budong   

  1. Department of Water Resources and Hydrology, Hehai University, Nanjing 210098
  • Received:1994-08-01 Revised:1995-08-01 Online:1996-01-20 Published:1996-01-20

Abstract: The Chinese precipitation patterns in flood season associated with the ElÑino/southern Oscillation(ENSO) are investigated, especially in the eastern China, using the rather long period rainfall data in this century. The results show that there are remarkable differences between the precipitation patterns in ENSO warm phase (ElÑino year) and cold phase (LaÑino year) flood seasons, as well as between the patterns in ElÑino years and their next years. The most parts of China receive below normal rainfall in ElÑino year flood seasons, but the coastal area of Southeast China receives above normal amounts. Comparatively, the most parts of China receives above normal rainfall in ElÑino’s next year flood seasons, but the eastern part of the reaches among the Huanghe (Yellow) River, the Huaihe River and the Haihe River, and theÑortheast China receive less. During ENSO cold phase, the reaches of the Changjiang(Yangtze) River and theÑorth China receive more amounts than normal rainfall in LaÑino year flood seasons, and the other regions of China receive less. In LaÑino next years, the coastal area of the Southeast China, the most part of theÑortheast China and the regions between the Huanghe River and the Huaihe River receive more precipitation during flood seasons, but the other parts receive below normal precipitation.