冰相雨胚转化水汽密度差的实验研究

THE EXPERIMENTAL STUDY ON THE CONVERSION OF SATURATED VAPOR DENSITY DEFICIT IN FORMING ICY-PHASE RAIN EMBRYO

我国的降水云系多属混合云。成雨机制中固相雨胚的形成对自然降水和人工增雨都具有十分重要的意义。该文通过飞机外场催化试验指出 :固相雨胚的形成过程不仅转化过冷云水 ,还可转化冰水面饱和水汽密度差Δρ( g/m3)。为在低过冷云水含量 (SLWC) ( g/m3)的云中实施人工增雨提供了重要的实验依据。

The precipitation clouds in China are mainly mixed clouds. To form solid rain embryo is important for both artificial and natural precipitation in the mechanism of rain formation. Through the aircraft field seeding experiments, it is found that during the formation process of solid rain embryo, not only super-cooled cloud water, but also the deficit from saturated vapor density with respect to ice and water is converted. This provides a major basis for precipitation enhancement experiment in the clouds with low super-cooled water content (SLWC).