摘要
应用天津WSR-81S雷达体积扫描资料和地面降水实况资料对2000年8月2日天津市武清区进行的一次雹云高炮人工增雨作业进行了分析。作业后从地面降水实况资料上看,在作业炮点的上游出现了大降水中心,表明人工增雨作业可以改变自然降水的原始分布,增加局部地区的降水。利用降水时段的雷达体积扫描资料分析表明:循环往复的爆炸作业使雷达回波的强度减弱、高度降低、移动速度减慢。由于迎着雹云的移动方向作业,造成上游地区降水较大,大于45 dBz的强回波滞留在作业炮点的上游。
An artillery precipitation enhancement operation of hail clouds at the Wuqing district in Tianjin on 2 August 2000 is analyzed in detail by use of WSR-81S Radar data at Tianjin and the corresponding surface precipitation data. The surface rain observation data after the operation shows that there is a large precipitation center in the upstream of the operating site, which means that the operation changed the original distribution of natural precipitation, increased the rainfall in parts of the area. Analysis of the WSR-81S radar data shows that during the repeated operations, the radar echo intensity, altitude, and speed decreased; the operation was directed at the movement of the hail clouds, resulting in more precipitation in the upstream area, so the over 45 dBz echo zone remained there.
出处
《气象科技》
2007年第2期278-281,311,共5页
Meteorological Science and Technology
基金
天津市科技攻关培育项目"智能化人工增雨技术研究"(033122011)资助
关键词
雹云
人工增雨
雷达资料
hail cloud, precipitation enhancement, radar data
