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分析了厄尔尼诺与湖南洞庭湖区洪涝的统计相关和西太平洋副热带高压 (简称副高 )与 1998年洞庭湖区洪涝的关系 .结果表明 ,在厄尔尼诺次年洞庭湖区域出现洪涝的频率较大 ;副高异常是形成 1998年洞庭湖区洪涝的重要原因 .同时讨论了厄尔尼诺与副高之间的联系机制 ,说明前者能影响后者的变化 ,并分析了环流调整对强降水的影响
The statistical correlation between El Niño and Dongting Lake in Hunan Province and the relationship between the subtropical high in the western Pacific and the flood in the Dongting Lake area in 1998 are analyzed.The results show that there is a large frequency of flood in Dongting Lake in the following year, Is an important reason for the formation of flood in Dongting Lake area in 1998. At the same time, it discusses the connection mechanism between El Niño and the subtropical high, which shows that the former can affect the latter and analyzes the effect of circulation adjustment on heavy rainfall