Seeding opportunity and location of artificial precipitation enhancement operation of a stratiform-cloud
一次层状云降水过程人工增雨时机与部位选择探析

Using doppler radar,satellite nephogram and traditional sounding data,a widespread rain event occurring in the North-China on Feb.20,2004 was analyzed,(and) the application of dopplar radar and sounding data on artificial(precipitation) enhancement operation by rocket was studied.