雷达资料在青海省东部人工增雨效果检验中的应用研究  

Application of Radar Data in Effect Evaluation of Artificial Precipitation Enhancement in Eastern Qinghai Province

作　　者：康晓燕[1] 马学谦[1] 张博越 韩辉邦[1] 

机构地区：[1]青海省人工影响天气办公室,青海西宁810001

出　　处：《现代农业科技》2017年第12期214-217,共4页Modern Agricultural Science and Technology

基　　金：国家自然基金(41665008;41565008);国家重点研发计划项目(2016YFC0501903-4;2016YFC0501906-5)

摘　　要：利用2013—2014年青海省东部农业区人工增雨作业期间雷达资料,根据层状云和对流云2种类型云的地面增雨作业,分析了作业云体(或对比云体)催化前后的组合反射率、回波顶高和垂直积分液态水含量等雷达参数的变化规律。结果表明,层状云地面增雨作业后各雷达参量在一定时间内处于上升趋势,第5~7个体扫时达到最大,之后才出现下降趋势。因此,可考虑对此类降水云系的重复作业时机应选择在作业后第5~7个体扫,即作业后30~40 min。在对流云增雨过程中,通过对照对比云,增雨作业有助于延长对流单体的生命史,具有较大的增雨潜力。According to two types of clouds （ stratiform cloud and convective cloud ）, the change regulation of radar parameters （composite reflectivity, echo top height and vertical integrated liquid water content ）of seeding clouds （no-seeding clouds）were analyzed before and after weather modification operations ,based on the radar data in the agricultural region of eastern of Qinghai Province during the artificial precipitation period from 2013 to 2014. The results showed that the radar echo parameters of stratiform cloud became greater gradually in a certain time after seeding, and the maximum values appeared in the 5th to 7th scan body after seeding,then decreased. It is suggested that duplication timing of such rain clouds should he 5-7 individual sweep （30-40 mintus ）after operation. In the process of convective clouds seeding, artificial precipitation enhancement are helpful to prolong the life of the convective cells by comparing seeded clouds and no-seeding clouds.

关 键 词：雷达资料 人工增雨 效果检验 应用 青海省东部 

分 类 号：P481[天文地球—大气科学及气象学]