台风“杜苏芮”期间六种卫星降水产品的监测能力评估  

Monitoring Capability Assessment of Six Satellite Precipitation Products During Typhoon Doksuri

作　　者：游诗芹 李莹[3] 杨传国[1,2] 孙爱立 YOU Shi-qin;LI Ying;YANG Chuan-guo;SUN Ai-li(The National Key Laboratory of Water Disaster Prevention,Hohai University,Nanjing 210098,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;National Climate Center,Beijing 100081,China;College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling 712100,China)

机构地区：[1]河海大学水灾害防御全国重点实验室,江苏南京210098 [2]河海大学水文水资源学院,江苏南京210098 [3]国家气候中心,北京100081 [4]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《水电能源科学》2024年第12期19-23,共5页Water Resources and Power

基　　金：“一带一路”水与可持续发展科技基金资助项目(2020490611);国家重点实验室重大项目培育专题(B230202015);江苏省水利科技项目(2021049)。

摘　　要：高时空分辨率卫星降水数据对于监测台风强降水及防御暴雨洪水灾害至关重要。针对2023年台风“杜苏芮”造成的高强度降水,以地面气象站观测资料为基础,分析GSMaP_MVK、GSMaP_Gauge、IMERG_Early、IMERG_Late、FY-2G、FY-2H六种卫星降水产品的时空分布误差特征,并进行综合评估。结果表明,六种卫星降水产品对整场台风降水量的时空分布特征表现较好,其中GSMaP、FY-2G综合表现最佳,IMERG对低雨强表现较好,而FY-2H评价效果不佳;对高雨强时段,GSMaP、FY-2G监测能力较强,但各卫星降水产品仍存在不确定性;由于反演算法和数据校核等原因,非准实时卫星降水产品的评估结果优于准实时产品,而在准实时产品中FY-2G表现最优。Satellite precipitation data with high spatial and temporal resolution is crucial for monitoring high-intensity precipitation from typhoon and preventing flood caused by rainstorm.According to the high-intensity precipitation caused by Typhoon Doksuri in 2023,the temporal and spatial distribution error characteristics of six satellite precipitation prod-ucts,GSMaP_MVK,GSMaP_Gauge,IMERG_Early,IMERG_Late,FY-2G and FY-2H,were analyzed and evaluated based on the observation data of surface weather stations.The results show that the six satellite precipitation products perform well on the spatiotemporal distribution characteristics of the whole typhoon precipitation.GSMaP and FY2G per-form best comprehensively,IMERG performs well on low-intensity precipitation,while FY-2H has a poor evaluation effect;GSMaP and FY-2G have strong monitoring capabilities on the period of high-intensity precipitation,while there are still uncertainties in all the satellite precipitation products;The evaluation results of near-real-time satellite precipitation products are better than those of real-time satellite precipitation products,due to the different retrieval algorithms and the data calibratation.FY-2G performs best among real-time satellite precipitation products.

关 键 词：卫星降水 监测能力 精度评估 风云卫星 台风“杜苏芮” 

分 类 号：TV125[水利工程—水文学及水资源] TP75[自动化与计算机技术—检测技术与自动化装置]