热带地区流场异常与江淮特大暴雨成因的研究

作者：王文东  杨祖芳  何立富

单位：国家气象中心, 北京

关键词：流场 异常 大暴雨

分类号：

出版年·卷·期（页码）：1994·11·第一期（15-21）

摘要：

本文通过计算和对比分析,得到1991年春、夏江淮地区特大暴雨形成的五个基本特征:西北太平洋上副高显著偏西、偏北;较弱的西南季风与东南气流汇合成强西南气流伸向江淮地区;偏东风与强西南风形成的辐合带在江淮地区维持;江淮地区对流层中下部为强上升运动、上部为辐散;130°E附近南半球向北半球的较强越赤道气流持续。

Five basic features causing the torrential rain over eastern China durings late spring and early summer in 1991 are shown based on the compution and analysis,they are:(1)Subtropic high located wester and norther;(2)Strong southwester extending to eastern China, was formed by combining weaker southwest monsoon and southeast flow;(3)convergence zone exsisting continuously over eastern China,was formed by conbining easterly and strong southwesterly;(4)strong ascending motion occurred in middle and lower troposphere and divergence appeared in the upper over eastern China;(5)Stronger cross-equator flow insisted near 130°E.

参考文献：

[1] 陶诗言等, 中国之暴雨, 科学出版社. 1980年. [2] 包澄澜等, 暴雨的分析和预报, 农业出版社. 1981年.

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