关于积云增雨和实施方案的探讨

Cumulus Cloud Rain Enhancement and Design of Operation Scheme

在综合雷雨云式的积云降水特点和归纳观测及理论结果的基础上,用数值模拟研究了阵雨形成机制,发现雷雨云式的积云结构类似于雹云,也存在着水平风“零域”和成雨“穴道”,大粒子群向这里集中并累积,然后再下泻成阵雨。据此提出了积云人工增雨的动力学根据和设计实施方案的要领,并给出了积云人工增雨作业部位、时机的概念模型。

On the basis of summary of the precipitation characteristics and the observable or theoretic results for cumulus clouds,the mechanisms of shower formation were investigated by use of numerical simulation.It is concluded that two processes,the accumulation of raindrops and the breakdown of rain groups,induce showers.It is very similar to the mechanism of hail formation;i.e.due to the airflow field is convective,there is a dynamically attractive area located by the main updraft and the horizontal velocity of ...