The Function of Artificial Precipitation Enhancement in the Process of Heavy Precipitation

把握好作业时机是人工增水的关键，要识别适宜作业的云，选择有利的天气形势、降水机率较大的天气系统下进行，据经验，适宜人工增水的天气系统有：冷锋天气；切变线云系有：积雨云、高层云、以及云体结构和风力资源都有利于人工增水效果。 Holding good operation timing which includes identifying cloud to appropriate operation and choosing the favorable weather conditions is the key to the artificial weather. According to expe-rience, appropriate artificial water weather systems include the cold weather and shear clouds which are cumulonimbus clouds, altostratus, cloud body structure and wind resources, which are conducive to the effect of artificial water.