风云三号卫星微波载荷历史数据再定标  

Recalibration of the FY-3 microwave payload historical data records

作　　者：谷松岩 郭杨[1,2,3] 谢鑫新 何杰颖[5] 窦芳丽 吴琼 王振占 张升伟 安大伟 武胜利 张鹏 GU Songyan;GOU Yang;XIE Xinxin;HE Jieying;DOU Fangli;WU Qiong;WANG Zhenzhan;ZHANG Shengwei;AN Dawei;WU Shengli;ZHANG Peng(National Satellite Meteorological Center(National Center for Space Weather),China Meteorological Administration,Beijing 100081,China;Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites,China Meteorological Administration,Beijing 100081,China;Innovation Center for FengYun Meteorological Satellite(FYSIC),Beijing 100081,China;Institute of Atmospheric Science,Zhong Shan University,Zhuhai 519082,China;National Space Science Center,Chinese Academy of Sciences,Beijing 100190,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)中国气象局,北京100081 [2]中国遥感卫星辐射测量和定标重点开放实验室中国气象局,北京100081 [3]许健民气象卫星创新中心,北京100081 [4]中山大学大气科学学院,珠海519082 [5]中国科学院国家空间科学中心,北京100190

出　　处：《遥感学报》2023年第10期2252-2269,共18页NATIONAL REMOTE SENSING BULLETIN

基　　金：国家重点研发计划(编号:2018YFB0504902);项目国产多系列遥感卫星历史资料再定标技术(编号:2018YFB0504900);国家自然科学基金面上项目(编号:41775020);国家自然科学基金青年基金(编号:42005105)。

摘　　要：本文在综述国际上星载微波辐射计历史数据再定标技术基础上,介绍了风云三号卫星微波载荷特点,综述业务辐射定标和历史数据再定标共性技术,阐述风云三号卫星微波载荷通过仪器系统全链路辐射传递仿真构建在轨特殊工况辐射修正模型后,以国际参考载荷为参考消除代际间辐射差异的历史数据再定标技术路线;简介了风云三号卫星微波载荷在轨基本业务状态以及历史数据再定标研究成果,再定标生成的风云三号微波长时序L1科学数据集,经与国际同类载荷交叉比对表明氧气吸收通道长时间序列亮温数据RMSE为0.77 K,标准差为0.28 K;水汽吸收通道再定标后长时间序列数据的RMSE最优达到0.80 K,标准差为0.20 K;窗区通道以23.8 GHz的V极化通道为例再定标后长时间序列数据的RMSE最优达到1.29 K,标准差为0.15 K;在定标后最大RMSE不超过1.5 K。风云卫星微波载荷与参考载荷之间具有非常好的辐射一致性。风云三号卫星微波载荷历史数据再定标结果为后续建立风云卫星微波载荷基础气候数据集(FCDR)、和包含关键气候变量的网格化气候数据集(CDR)提供了基础性支撑。This study focuses on the latest recalibration results of the historical data of domestic satellite microwave payload,which is a national key research and development plan,to apply the long-time passive microwave historical data from Chinese satellites to the study of climate and climate change.Chinese Feng Yun 3 series satellites(FY-3)have accumulated historical microwave remote sensing data of microwave radiometer imager(MWRI),microwave temperature sounder(MWTS),and microwave humidity sounder(MWHS)for more than 13 years from May 27,2008.We have also completed the launch and operation of four satellites in two batches.During this period,the microwave payload data of FY-3 satellite played an active role in disaster prevention and mitigation and numerical weather forecast assimilation.Based on the review of the international satellite borne microwave radiometer historical data recalibration technology,the characteristics of the microwave load of FY-3 satellite is introduced,the common technologies of operational radiation calibration and historical data recalibration are summarized,and the microwave load of the FY-3 satellite that passes through the entire link radiation transfer simulation of the instrument system is expounded.After constructing the radiation correction model under special conditions in orbit,the technical route of rescaling historical data to eliminate the radiation difference between generations based on the international reference load,the basic operational status of the FY-3 microwave payload in orbit,and the research results of historical data recalibration are introduced.The long-time sequence L1 scientific dataset of FY-3 microwave generated by recalibration is cross compared with similar international loads.Results show that the RMSE of long-time series brightness temperature data of oxygen absorption channel is 0.77 k,and the standard deviation is 0.28 k.After rescaling the water vapor absorption channel,the optimal RMSE of the long-time series data is 0.80 k,and the standard deviation i

关 键 词：风云三号气象卫星 微波大气探测仪 微波成像仪 历史数据再定标 交叉定标 

分 类 号：P413[天文地球—大气科学及气象学] P2