【摘要】 本文选取了1959—1982年23次四川盆地大范围强暴雨过程,并按暴雨区的位置分为川西类、川东类以及全川移动类三种类型。然后分别对各类大暴雨的对流层中、低层的位势高度场和流场进行合成分析,从而得出了各类大暴雨的位势高度场及流场的特征、相互间的差异。为四川盆地大范围强暴雨的预报提供了一些预报着眼点。更多还原

【Abstract】 23 cases of large-scale heavyrain storms over Sichuan Basin in 1959-1982 are selected and divided into three types. Resultant analysis are then made respectively for each type according to their middle and low-level tropospheric potential height field and wind field. It is shown that each type of heavyrain storm occurs respectively in different synoptic characteristic environment .These conclusions canbe applied to forecast the large-scale heavyrain storm over Sichuan Basin.更多还原