星载雷达与C波段地基雷达数据一致性个例分析  

Comparative case study on the data consistency between the space-borne radar and C-band ground-based radar

作　　者：朱飙[1,2] 楚志刚 王振会[3] 韩静[3] ZHU Biao;CHU Zhigang;WANG Zhenhui;HAN Jing(Gansu Meteorological Bureau,Lanzhou 730000,China;Lanzhou Regional Climatic Center,Lanzhou 730030,China;School of Atmospheric Physics,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]甘肃省气象局,兰州730000 [2]兰州区域气候中心,兰州730030 [3]南京信息工程大学大气物理学院,南京210044

出　　处：《气象科学》2020年第3期385-392,共8页Journal of the Meteorological Sciences

基　　金：公益性行业(气象)科研专项项目(GYHY201306078);国家重点研发计划项目(2018YFC1506603)。

摘　　要：为提高单部雷达与多部雷达组网探测降水的精度,对地基雷达进行了一致性定标。星载雷达作为标准参考源已应用于S波段天气雷达的一致性定标,但对于C波段天气雷达的适用性仍有待研究。为此,本文选择了位于较高纬度的兰州C波段业务雷达,设计了以星载雷达标定C波段雷达的方法。通过对两个降水个例进行分析发现:定标后的C波段雷达回波强度和降水反演精度均有一定改善。说明采用星载雷达对C波段雷达进行定标也是可行的,这有利于解决西部地区地基雷达组网探测的一致性定标难题,展现了良好的应用前景。In order to improve the precision of precipitation estimation by the networking of single radar and multiple radar,consistency calibration for ground-based radar is necessary.As a standard reference source,satellite-borne radar has been applied to the consistency calibration of S-band weather radar,but its applicability to C-band weather radar still needs to be studied.In this paper,the Lanzhou C-band operational radar located at higher latitude is selected,and the method of calibrating C-band radar with satellite-borne radar is designed.Through the analysis of two precipitation cases,it is found that the calibrated C-band radar echo intensity and precipitation inversion accuracy are improved to some extent.It shows that it is feasible to use satellite-borne radar to calibrate C-band radar,which is conducive to solving the problem of consistency calibration of ground-based radar network detection in the western region of China and shows a good application prospect.

关 键 词：星载测雨雷达 C波段地基雷达 C波段雷达定标 数据一致性 雷达估计降水 

分 类 号：P412.25[天文地球—大气科学及气象学]