星载降水测量雷达反射率因子宽幅计算调度策略及应用  

Scheduling Strategy and Application for Wide Swath Radar Reflectivity Factor Calculation of Spaceborne Precipitation Measurement Radar

作　　者：袁梅 张小雯 覃平 张媛媛 尹红刚 安宏达 商建 徐娜 谷松岩[1,2,3] YUAN Mei;ZHANG Xiaowen;QIN Ping;ZHANG Yuanyuan;YIN Honggang;AN Hongda;SHANG Jian;XU Na;GU Songyan(National Satellite Meteorological Center(National Centre for Space Weather),Beijing 100081,China;Innovation Center for FengYun Meteorological Satellite(FYSIC),Beijing 100081,China;Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites,Beijing 100081,China;National Meteorological Center,Beijing 100081,China;Beijing Huayun Shinetek Science and Technology Co.,Ltd.,Beijing 100081,China)

机构地区：[1]国家卫星气象中心(国家空间天气监测预警中心),北京100081 [2]许健民气象卫星创新中心,北京100081 [3]中国气象局遥感卫星辐射测量和定标重点开放实验室,北京100081 [4]国家气象中心,北京100081 [5]北京华云星地通科技有限公司,北京100081

出　　处：《遥测遥控》2024年第6期21-36,共16页Journal of Telemetry,Tracking and Command

基　　金：中国气象局青年创新团队(CMA20240N10);民用航天技术预先研究项目(D040204,D030303);中国科学院国际大科学计划培育专项(183311KYSB20200015);风云卫星应用先行计划2023(FY-APP-ZX-202301)。

摘　　要：我国首颗降水测量卫星于2023年4月成功发射,联合使用主被动微波仪器双频降水测量雷达和微波成像仪开展高精度降水探测。针对降水测量雷达幅宽覆盖有限的现状,利用同平台微波成像仪资料,采用深度学习模型研发了宽幅雷达反射率因子产品,实现了降水测量雷达现有幅宽的2.67倍覆盖,显著增大了降水测量雷达的观测范围。以2023年台风“泰利”和华北极端短时强降水为例对业务生成的宽幅结果进行应用潜力分析,结果显示,宽幅雷达反射率因子的计算结果与地基雷达反射率因子的结果较为一致,在实际业务中具有较强的参考性。在地面系统业务调度中,为了支撑持续不断的宽幅雷达反射率因子数据的高时效计算,设计了宽幅雷达反射率因子业务流程,综合考虑业务实施的资源消耗、时效性及可靠性等,提出数据驱动的最佳业务调度策略,可以有效地减少运行时间,提高业务产品生成与服务的时效性。China's first precipitation measurement satellite has been successfully launched in April 2023,combining active and passive microwave instruments dual-frequency precipitation measurement radar and microwave imager to carry out high precision precipitation detection.In view of the limited coverage of precipitation measurement radar,the radar reflectivity factor data of wide swath radar is developed by using the microwave radiometer imager data of the same platform and the deep learning model,and the coverage of 2.67 times the width of precipitation measurement radar is achieved,which significantly increases the observation range of precipitation measurement radar.Taking Typhoon "Tali" in 2023 and extreme short-time heavy precipitation in North China as examples,the application potential of the wide swath results generated by the service is analyzed.The calculation result of the radar reflectivity factor of wide swath radar is consistent with that of ground based radar,which has a good reference in practice.In the ground system operation scheduling,in order to support the continuous high-timeliness calculation of wide swath radar reflectivity factor data,this paper designs the wide swath radar reflectivity factor operation flow,comprehensively considers the resource consumption,timeliness and reliability of the operation implementation,and proposes the best data-driven operation scheduling strategy,which can effectively reduce the running time and improve the timeliness.

关 键 词：星载降水测量雷达 宽幅计算 雷达反射率因子 业务调度 

分 类 号：P49[天文地球—大气科学及气象学] P237