冷云人工增雨催化区的探空判据

SOUNDING CRITERION OF COLD CLOUD CATALYSIS

为解决冷云人工增雨催化前没有微物理资料确定人工增雨潜力区的问题,文中利用加密探空资料,根据发生贝吉龙过程的条件,分析了适宜冰晶增长的区域和冷云可播区,提出了冷云人工催化的宏观判据。适宜冰晶增长的区域先于降水在高层出现,降水开始时在-1℃层以上存在深厚的冰水转化区,这一区域自高空向下随天气系统自西向东传播。文中还构造了增雨潜力系数和结束冷云催化的判据。降水过程后期根据可播区、准饱和层的分布判断是否继续进行冷云催化。该宏观判据易于在人工增雨作业中使用。

For confirmation artificial precipitation potential zone before cloud seeding, the field of ice crystal growing and field of cold cloud seedability are analyzed using additional sounding data according to Bergeron's process. Macro-criterion of cold cloud seeding and the coefficient of seeding potential are presented. There is deep field of ice-water change as precipitation beginning above - 11C layer. It spread from west to east as synoptic system and it fell from high. Whether or not continued seeding is judged in precipitation period with seedability layer and quasi-saturation layer. The macro-criterion may be used conveniently in artificial precipitation operation.