摘要
在对强对流(积云)增雨作业中,引用防雹新概念方法是利用多普勒雷达不同仰角的反射率(R)图及反射率剖面(RCS)图、径向速度剖面(VCS)图等资料,对强对流云流场特征进行定性分析,判定其主位置,通过主入流区位置和态势,确定“0”线的类型,给出增雨作业的时机和部位。用这一新概念,结合天津地区积云增雨的实际情况,在2003~2005年期间进行了应用。当流场、温度场和水凝物粒子场适当配置时,会形成大量降水粒子的集中累积,产生阵性暴雨。
The qualitative analysis of the flow-field characteristics of convective clouds is made by using Doppler radar products such as reflectivities at different elevations and reflectivity cross-section,velocity cross-section,etc.,according to the new concept of cave channel in weather modification.Based on the results,the type of the zero line is determined by means of the position and state of the main influx area,so to determine the proper position and time for rain enhancement.According to the new concept,ap...
出处
《气象科技》
2005年第S1期7-10,173,共5页
Meteorological Science and Technology
基金
河北省"十五"重点科技攻关课题"火箭人工增雨作业条件与关键技术研究"(03220602D)
天津市科技攻关培育项目"智能化人工增雨技术研究"(033122011)共同资助
关键词
人工增雨
流场特征
“0”线
“穴道”
hail suppression
characteristic of flow field
zero line
cave channel
