富春江水库以上区域卫星降水相对地面站点降水的净效益研究  

Study on Net Benefit of Satellite Precipitation Relative to Interpolated Gauge Data in Upper Catchment of Fuchunjiang River Reservoir

作　　者：徐琳 杜军凯[1,2] 仇亚琴 董颢[1] 吕向林 代宁 XU Lin;DU Jun-kai;QIU Ya-qin;DONG Hao;LV Xiang-lin;DAI Ning(China Institute of Water Resources and Hydropower Research,Beijing 100044,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Beijing 100038,China;Laboratory of Coastal Groundwater Utilization and Protection,Tianjin University of Science and Technology,Tianjin 300457,China)

机构地区：[1]中国水利水电科学研究院,北京100044 [2]流域水循环模拟与调控国家重点实验室,北京100038 [3]天津科技大学滨海地下水利用与保护研究室,天津300457

出　　处：《水电能源科学》2025年第2期44-48,共5页Water Resources and Power

基　　金：流域水循环模拟与调控国家重点实验室项目(SKL2024YJZD02);浙江省水利厅科技计划项目(RA2402);云南省重点研发计划(202303AC100020);国家重点研发计划(2023YFF1304202)。

摘　　要：为评估卫星降水相对于地面站点降水的净效益,以富春江水库以上流域为例,研究2015~2020年的三种卫星降水产品IMERG、MSWEP、GSMaP相对于站点内插日数据的性能。采用连续统计指标、分类统计指标对卫星降水产品(SPP)和内插降水进行验证,在时空尺度、不同降水强度下分析卫星遥感产品相对于地面站点的可用性。结果表明,研究区IDW内插数据在日尺度上的表现总体优于三种卫星降水数据;三种卫星降水数据相比,GSMaP的整体表现比IMERG、MSWEP更佳,其对丰水期降水的高估、误报问题改善具有一定的应用潜力。In order to evaluate the net benefit of satellite precipitation relative to interpolated gauge data,taking the upper catchment of Fuchunjiang River Reservoir as an example,the daily performance of three satellite precipitation products(IMERG,MSWEP,GSMaP)relative to the interpolated precipitation data from 2015 to 2020 was studied.Verification statistics and precipitation categorical statistics were used to measure the accuracy of SPPs and gauge-interpolated data,and the availability of satellite remote sensing products relative to rain gauge data was analyzed from the aspects of spatial and temporal variation and different precipitation intensities.The results show that the performance of IDW interpolation data is generally better than that of the three satellite precipitation products on the daily scale in the study area.In addition,compared with IMERG and MSWEP,the overall performance of GSMaP is better,and it shows certain application potential for the improvement of overestimation and false alarm of precipitation in wet season.

关 键 词：卫星遥感降水产品 插值降水 富春江 性能评估 净效益 

分 类 号：TV125[水利工程—水文学及水资源] P339[天文地球—水文科学]