【摘要】 利用湖南省境内的多普勒天气雷达探测资料,结合湖南省中小尺度地面降雨量资料,对催化作业前后目标云与对比云的多普勒天气雷达参数(回波顶高、最大反射率因子、垂直积分液态水含量、回波面积等)的变化特征进行对比分析。结果表明,催化后,目标云体雷达回波参数值均增大,约20～30min后都能达到最强,而对比云增大率比目标云要小;作业点下风方雨量在催化后20～30min内达到最大,最大降雨量与目标云雷达回波参数变化有较好的对应关系,而对比云降雨量较为平缓,雨量也比目标云要小。更多还原

【Abstract】 The Doppler weather radar parameters of seeding and non-seeding clouds,such as echo top,reflectivity,vertically integrated liquid,echo area,etc.,are analyzed before and after weather modification operations by using the Doppler radar detection data and small-scale and mesoscale ground precipitation data.The results show that all the values of the Doppler echo parameters for the target clouds increased after seeding,reaching the maximum in 20 or 30 min,while the enlargement rate of the contrast cloud is smaller than that of the target cloud.The precipitation downwind reaches the maximum in 20 or 30 min,which is corresponding to the changes of radar parameters of the target cloud.While the rainfall intensity and precipitation of the contrast clouds are less than those of the target clouds.更多还原