中国大陆地区多源降水产品的适用性分析  

Applicability Analysis of Multi-source Precipitation Products in Chinese Mainland

作　　者：王静[1,3,4] 高博[1,3,4,5] 宫辉力[1,3,4,5] 苏德斌 陈蓓蓓[1,3,4,5] 崔要奎 WANG Jing;GAO Bo;GONG Huili;SU Debin;CHEN Beibei;CUI Yaokui(Key Laboratory of Mechanism,Prevention and Mitigation of Land Subsidence,Ministry of Education,Capital Normal University,Beijing 100048,China;Key Laboratory for Atmospheric Sounding CMA,Chengdu University of Information Technology,Chengdu 610225,China;Beijing Laboratory of Water Resources Security,Capital Normal University,Beijing 100048,China;College of Resources,Environment and Tourism,Capital Normal University,Beijing 100048,China;Hebei Cangzhou Plain Groundwater and Land Subsidence National Observation and Research Station,Cangzhou 061000,China;Institute of Remote Sensing and Geographic Information System,Peking University,Beijing 100871,China)

机构地区：[1]首都师范大学地面沉降机理与防控教育部重点实验室,北京100048 [2]成都信息工程大学中国气象局大气探测重点开放实验室,四川成都610225 [3]首都师范大学水资源安全北京实验室,北京100048 [4]首都师范大学资源环境与旅游学院,北京100048 [5]河北沧州平原区地下水与地面沉降国家野外科学观测研究站,河北沧州061000 [6]北京大学遥感与地理信息系统研究所,北京100871

出　　处：《无线电工程》2022年第5期846-858,共13页Radio Engineering

基　　金：国家自然科学基金重点项目(41930109/D010702);国家自然科学基金面上项目(41771455/D010702);北京卓越青年科学家项目(BJJWZYJH01201910028032);西北区域人工影响天气能力建设项目(ZQC-R18217)。

摘　　要：基于地面观测数据对中国大陆地区2008—2017年全球降水计划多卫星降水联合反演(IMERG)数据集、中国逐日网格降水量实时分析系统(CGDPA)数据集和中国1 km分辨率逐月降水量(TP1 km)数据集进行系统地评价与分析,进一步利用加权最小二乘法作为数据筛选器对上述多个降水数据集进行优化重建。重建后的数据集在中国大陆多个区域均可达到较好的精度:各地区相关性大于0.90,相对均方根误差小于50%,相对偏差在-20%~30%。Based on ground observation data,the 2008—2017 Global Precipitation Program Multi-satellite Precipitation Retrieval(IMERG)dataset of Chinese Mainland,the China Daily Grid Precipitation Analysis System(CGDPA)dataset,and the monthly precipitation in China with a resolution of 1 km(TP1 km)data set is systematically evaluated and analyzed,and the weighted least squares method is further used as a data filter to optimize the reconstruction of the above-mentioned multiple precipitation data sets.The reconstructed data set can achieve good accuracy in many regions of Chinese Mainland:the correlation of each region is greater than 0.90,the relative root mean square error is less than 50%,and the relative deviation is between-20%and 30%.

关 键 词：中国大陆 降水产品 适用性分析 数据集构建 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]