It is considered that:(1) The structure of the return current process precipition, NE cold flow at low level and SW warm and wet flow above, form the warm front precipitation cloud system in favour of the weather modification cloud seeding;

• 认为:(1)回流降水结构,在低层东北气流冷垫与中高层西南暖湿气流共同作用下,形成暖锋降水云系,有利于进行人工催化作业;