摘要
本文提出一种计算空间和时间平均雷达等效反射因子Z.的方法。用Z.分析福建古田1982——1984年75次随机增雨试验效果,催化37次平均相对增量20.34％,绝对增量26.50mm^6/m^3。且与降水效果比较,印证了Z.的有效性。Z.增大表明催化使云中较大水滴数浓度加大。
In this paper a method of computing spatial and temporal average radar's equivalant reflection factors Ze is suggested. The effect of 75 randomizedprecipitation enhancing experiments (1982——1984) in Fujian Gutian RiverBasin with the method is analysed. The result of 37 seeding experiments indicates that the average relative increment is 20.34 % and absolute increment is 26.50 (mm6/m3). The effectiveness of Ze has been confirmed as compared with the regression analysis of precipitation. An increase in Ze indicates that the bigger drop's number density in cloud may be increased by seeding.
出处
《气象学报》
CSCD
北大核心
1989年第2期244-253,共10页
Acta Meteorologica Sinica
