人工增雨作业前后不同高度雷达回波分析  

Analysis of Radar Echoes at Different Heights Before and After Precipitation Enhancement

作　　者：王以琳[1] 姚展予[2] 林长城[3] WANG Yilin;YAO Zhanyu;LIN Changcheng(Shandong Institute of Meteorological Sciences,Jinan 250031,China;Chinese Academy of Meteorological Sciences,Beijing 100081,China;Fujian Institute of Meteorological Sciences,Fuzhou 350001,China)

机构地区：[1]山东省气象科学研究所,山东济南250031 [2]中国气象科学研究院,北京100081 [3]福建省气象科学研究所,福建福州350001

出　　处：《干旱气象》2018年第4期644-651,共8页Journal of Arid Meteorology

基　　金：公益性行业(气象)专项(GYHY201406033);华东区域气象科技协同创新基金合作项目(QYHZ201406)共同资助

摘　　要：选取山东省人工增雨随机试验区2016年6月23日火箭增雨作业个例,在作业层水平1 km×1 km和垂直100 m网格内,利用跟踪作业云和对比云的方法,对比分析作业前后作业云和对比云区不同层次多普勒雷达反射率因子谱分布和垂直液态含水量(VIL)变化。结果表明:作业后作业云的基本反射率观测像元总数逐渐增加,最大值出现在作业后约22 min。催化对强度较小的雷达回波先起作用,对作业层内VIL的影响随高度增加而减小。An example of rocket precipitation enhancement in the Shandong precipitation enhancement random test area on June 23,2016 was selected. Operation layer with 1 km horizontal resolution and 100 m vertical resolution,the Doppler radar reflectivity spectrum distribution and vertically integrated liquid（ VIL） change at different levels before and after operation were analyzed using the tracking work cloud and comparison cloud method. By comparing the operation cloud and comparison cloud,it is shown that the total number of observed pixels of the basic reflectivity of the operating cloud gradually increased after the operation and its maximum value appeared about 22 minutes after the operation. The catalysis acted on the less intense radar echo firstly and its effect on the VIL within the working layer decreased with increasing height.

关 键 词：人工增雨 物理检验 多普勒雷达 

分 类 号：P481[天文地球—大气科学及气象学]