巴中CINRAD/SAD双偏振天气雷达数据质量评估  

Evaluation on data quality of CINRAD/SAD dual polarization radar in Bazhong

作　　者：黎亮 谢晓林 胡迪 刘锐 罗宇昂 李翔 Li Liang;Xie Xiaolin;Hu Di;Liu Rui;Luo Yu'ang;Li Xiang(Bazhong Meteorological Bureau,Bazhong 636001;Sichuan Meteorological Observation Data Center,Bazhong 610072;Sichuan Meteorological Observatory,Bazhong 610072)

机构地区：[1]巴中市气象局,巴中636001 [2]四川省气象探测数据中心,巴中610072 [3]四川省气象台,巴中610072

出　　处：《气象水文海洋仪器》2023年第4期98-102,共5页Meteorological,Hydrological and Marine Instruments

基　　金：高原与盆地暴雨旱涝灾害四川省重点实验室青年专项(SCQXKJQN2019016);四川省气象局科学技术研究开发课题(川气探数课题2022-1)资助。

摘　　要：为了分析巴中CINRAD/SAD新一代天气雷达数据质量情况,文章通过标准差分析法,统计分析了2022年1-12月巴中雷达基数据地物回波强度的均值和标准差变化情况、同频电磁干扰回波频次和水平极化反射率因子、差分反射率、差分相移、相关系数的标准差分布,得到了巴中雷达的基数据质量结果:1)巴中雷达数据质量稳定性较高,地物回波强度的均值和标准差变化较小;2)巴中雷达存在较多同频电磁干扰的情况,2022年全年出现干扰频次最少的是5月,最多是9月;3)巴中雷达水平极化反射率因子和差分相移存在较大波动,差分反射率和相关系数数据质量较好。In order to analyze the data quality of CINRAD/SAD new generation weather radar in Bazhong,this paper analyzes the mean and standard deviation of ground echo intensity of Bazhong radar base data from January to December in 2022,the frequency of same frequency electromagnetic interference echo and the standard deviation distribution of horizontal polarization reflectivity factor,differential reflectivity,differential phase shift and correlation coefficient by standard deviation analysis.The base data quality results of Bazhong radar are obtained.The quality stability of Bazhong radar data is high,and the mean and standard deviation of ground echo intensity change is little.There are many cases of co-frequency electromagnetic interference in Bazhong radar.In 2022,the minimum frequency of interference is May and the maximum is September.The horizontal polarization reflectance factor and differential phase shift of Bazhong radar have great fluctuation,and the quality of the differential reflectance and phase relation data is better.

关 键 词：双偏振雷达 数据质量 标准差 

分 类 号：P412.25[天文地球—大气科学及气象学]