摘要
利用河南省自动雨量站逐时降水资料、天气图资料及郑州新一代天气雷达产品,分析了2007年3月23日河南省飞机、高炮、火箭人工增雨作业效果,结果表明:飞机和高炮、火箭影响区1 h雨量增加0~4 mm,且作业时段内影响区维持较大降水。春季低槽、切变线天气过程,K指数在24℃左右、850 hPasθe在40℃左右时,850 hPa水汽通量散度在0^-16 g.s-1.cm-2.hPa-1之间的区域为最佳作业区;雷达反射率因子在30 dB z左右的降水发展阶段,作业效果明显。
Based on the hourly observational data of automatic precipitation stations, using the synoptic data and the products of CINRAD radar of Zhengzhou, the operation effects of artificial precipitation stimulation by aircrafts, cannons and rockets on March 2 - 3, 2007 in Henan province are analyzed. The results show the rainfall during one hour increases 0 - 4 mm and the influence region maintains a larger precipitation. And the best operation zone conditions are as follows：the developing trough and shear line weather process in spring, K index is 24 ℃ or so, θse of 850 hPa is 40 ℃ or so and the vapor flux diver- gence of 850 hPa is 0 - 16 g ·s^-1 · cm^-2 . hPa^-1 The operation effects are clearly during the precip- itation developing stage of the radar reflectivity factor 30 dBz.
出处
《气象与环境科学》
2007年第4期24-29,共6页
Meteorological and Environmental Sciences
基金
河南省重大科技攻关项目"河南省云水资源开发利用技术研究与示范"(0522030400)资助
关键词
人工增雨
作业效果
雷达回波
降水量
artificial precipitation stimulation
operation effect
radar echo
precipitation
