利用地面双偏振雷达检验GPM_DPR降水测量华北地区适用性初探  

Preliminary Study on Applicability of GPM_DPR Precipitation Measurements in Northern China by Using Ground Dual Polarization Radar

作　　者：冯启祯 肖辉[2] 姚振东[1] FENG Qizhen;XIAO Hui;YAO Zhendong(College of Electronic Engineering,Chengdu University of Information and Technology,Chengdu 610225,China;Institute of Atmospheric Physics,Chinese Academy of Sciences,LACS,Beijing 100000,China)

机构地区：[1]成都信息工程大学电子工程学院,四川成都610225 [2]中国科学院大气物理研究所LACS,北京100000

出　　处：《成都信息工程大学学报》2019年第4期323-332,共10页Journal of Chengdu University of Information Technology

基　　金：国家重点研发计划资助项目(2016YFE0201900-02);国家自然科学基金资助项目(41575037);国家重点基础研究发展计划(973)资助项目(2014CB441403)

摘　　要：全球降水测量(GPM)计划核心观测卫星已于2014年7月发射升空,地面验证是验证卫星探测能力的必备工作。主要是利用北京顺义地区的双偏振X波段雷达,并结合地面雨滴谱仪观测,对GPM双频雷达数据进行地面验证。实验着重于GPM卫星数据和地面X波段双偏振雷达数据之间进行交叉对比,利用地面雷达产生的降水测量评估卫星降水测量。结果表明,卫星和地面雷达反射率因子有较好的一致性,但降水产品存在明显的差异,有待进一步分析研究。The Global Precipitation Measurement(GPM) program core observation satellite was launched in July 2014. Ground verification is an essential task to verify satellite detection capabilities. This paper mainly uses dual-polarized X-band radar data,and combines the ground raindrop spectrometer to verify GPM dual-frequency radar data in Shunyi, Beijing. This experiment focuses on the cross-validation between GPM satellite data and ground-based radar data. The precipitation measurements generated by ground-based radar are used to evaluate satellite precipitation measurements. The results show that the satellite and ground-based radar reflectivity factors are in good consistency. However, there are obvious differences in precipitation products, which need further analysis.

关 键 词：雷达 降水测量 GPM 

分 类 号：TN957.524[电子电信—信号与信息处理]