ENSO事件及其对贵州夏季旱涝的影响

对近47年以来出现的14次ENSO事件分析，发现1991年～1997年厄尔尼诺赤道增暖首先出现位置和增暖开始的时间，与一般认为的“上半年发生的厄尔尼诺，海温正距平具有自东向西传播的特征，而下半年发生的厄尔尼诺，海温正距平具有自西向东传播的特征”不一致；并分析赤道东太平洋海温异常增暖对应初夏西太平洋副热带高压持续偏强、位置偏南，与我省夏季降雨多、夏旱轻有较好的一致性。

ENSO Incident And its Influence on Summer Drought Or Excessive rang in Guizhou Province

Analyzing 14 ENSO incidents occurring during the period of 47 years, we have reached a conclusion that abnormal warming up of water in the east Pacific Ocean near the equator corresponds with that the subtropical high pressure of the west Pacific Oceauis continuously at high side and its location is at south side in the early summer. It is almost corresponds with more rain and slightdrought in the summer of Guizhou Province.