地理研究

地理研究 ›› 1991, Vol. 10 ›› Issue (4): 77-81.doi: 10.11821/yj1991040009

• 研究报告 • 上一篇    下一篇

厄尼诺事件与洞庭湖平原降水量年际变化的联系

叶愈源   

  1. 湖南省气象台
  • 收稿日期:1989-08-20 修回日期:1991-07-24 出版日期:1991-12-15 发布日期:1991-12-15

ELNINO EVENTS ASSOCIATED WITH THE INTERANNUAL VARIATION OF RAINFALL AMOUNT OVER DONGTING LAKE PLAIN

Ye Yuyuan   

  1. Meteorological Service of Hunan Province
  • Received:1989-08-20 Revised:1991-07-24 Online:1991-12-15 Published:1991-12-15

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4

摘要： 利用1951-88年赤道东太平洋海表温度(SST)和1911年以来的厄尼诺事件与反厄尼诺事件年表,分析了它们与洞庭湖平原降水量年际变化的联系,本文得出:近80年来洞庭湖平原降水量年际变化与赤道东太平洋海表温度的联系是稳定的,其中冬半年海温与随后的汛期降水量的联系最密切。当年和次年长沙各月降水量合成距平在厄尼诺年由负到正,在反厄尼诺年由正到负,转折月在当年的8-9月。

关键词: 海表温度, 降水量, 厄尼诺, 洞庭湖平原

Abstract: The teleconnectlon between the rainfall amount over Dongting lake plain of Hunan associated SST over equatorial eastern pacific and the chronology of ELNino events are examined, and the authol found that, the SST in winter was obviously associated with the following flood season rainfall during 1951-1988, and the teleconnectlon was steady during 1911-1988.In addition, the monthly mean rainfall departure composite distribution trend would be inverse of 20 ELNino events and 14 anti-ELNino events including the same year and the following year during 1911-1988, the transform is from August to September at the same year.

Key words: sea surface temperature, precipitation, Dongting Lake plain