关键词: 人工增雨, 雷达回波, 效果检验

Abstract:

Based on the radar dense data of convectional cloud on June 12，2004 in Yongdcng county, choosing two similar convectional clouds as seeding and non一seeding cloud，the remarkable changes of radar echo parameters of the seeding cloud compared with the non一seeding cloud were discussed in this paper, and the rain enhancement effect was evaluated primarily with ground observational rainfall data.  "hhc results show that many aspects of the seeding cloud，such as precipitation，life characteristic and vertical characteristic parameters change of radar echo, had remarkable differences compared with the non一seeding cloud，and about }0 min after seeding() .6 mm precipitation produced，while the non一seeding cloud experienced a short period from development to dissipation and didri t produce any precipitation in the ground，which can conclude this rainfall cnhanccment experiment reached some prospective effect.

Key words: artificial stimulation of precipitation, radar echo, effect assessment