暖底积云自然降水过程和人工催化个例数值模拟

A Numerical Simulation on Natural Precipitation Process and Cloud Seeding in Cumulonimbus Clouds with Warm Cloud Base

利用一维积雨云双参数模式模拟福建省的暖底积云自然降水过程和催化过程。模拟结果表明 :暖云催化影响了降水的演变过程 ,不仅使总降水量增加 ,而且改变了降水的分布 ,使降水提前出现。冷云催化对降水过程没有发生明显的影响。对催化云和自然云云水和雨水含量的模拟表明 :暖云催化使云中碰并过程提前出现 ,导致催化云中云水含量明显少于自然云中的云水含量 :催化云雨水含量先是明显大于自然云中的雨水含量 ,随后明显小于自然云中的雨水含量。

The natural precipitation and cloud seeding of cumulonimbus clouds with warm cloud base in Fujian are simulated by using a dual-parameter cumulonimbus cloud model The results show that large droplet seeding cloud affects the precipitation process, which enhances the precipitaiton, changes the precipitation distribution, and makes precipitation occur early Ice-seeding cloud has few obvious influence The analysis of water content of clouds and rainwater show large droplet seeding cloud advances the collecting appearance So the water content of seeding clouds is obviously smaller than that of natural clouds And the rainwater of seeding clouds is greater than that of natural clouds at first, is smaller than that of nature next In this paper, we will discuss the precipitaiton mechanism of cumulonimbus and get some revelations