摘要
本文利用四川凉山地区三类雹云降雹过程的雷达回波资料,对各类冰雹个例的回波强度、回波顶高、强回波中心高度以及垂直积分液态含水量等主要特征参数及随时间变化进行了分析。结果表明,雹云回波强度、回波云顶高和垂直积分液态含水量等参数的跃增、骤降是人工防雹作业预警的重要参考指标,回波强度和垂直积分液态含水量出现减小趋势维持时间一般为2个体扫后(约12分钟),地面将发生降雹,这一分析结果为本地区人工防雹可能的最佳作业时机和雷达回波判据指标的选择有了初步认识。
Using hail radar echo data of three types of Hail Cloud in Liangshan Prefecture, it analyzed the radar echo intensity, echo ceiling height, height of strong echo center and vertical integrated liquid water content the main parameter values and changes over time of au types hail processe were analyzed. The results show that, hail cl characteristics of oud echo intensity, echo top height and vertically integrated liquid water content and other parameters of the jump, drop are the important reference index to artificial hail warning, echo intensity and vertical integrated liquid water content appear decrease, which last gen- eral 2 individual about 12 minutes, the hail occured. The results apply a preliminary study of the bast operation opportuuity and the choice of radar echo criteria for artificial hail suppression in local area.
出处
《高原山地气象研究》
2012年第4期55-60,共6页
Plateau and Mountain Meteorology Research
基金
凉山州气象局<天气雷达数据产品分析应用与预警业务系统研究与开发>项目
关键词
人工防雹
雷达回波
判据指标
凉山州
artificial hail suppression, radar echo, criterion index, Liangshan Prefecture
