Evaluation and intercomparison of multiple satellite-derived and reanalysis downward shortwave radiation products in China

作     者：Liu Tong Tao He Yichuan Ma Xiaotong Zhang 

作者机构：Hubei Key Laboratory of Quantitative Remote Sensing of Land and AtmosphereSchool of Remote Sensing and Information EngineeringWuhan UniversityWuhanPeople’s Republic of China State Key Laboratory of Information Engineering in SurveyingMapping and Remote SensingWuhan UniversityPeople’s Republic of China State Key Laboratory of Remote Sensing ScienceFaculty of Geographical ScienceBeijing Normal UniversityBeijingPeople’s Republic of China Beijing Engineering Research Center for Global Land Remote Sensing ProductsInstitute of Remote SensingScience and EngineeringFaculty of Geographical ScienceBeijing Normal UniversityBeijingPeople’s Republic of China 

出 版 物：《International Journal of Digital Earth》 (国际数字地球学报（英文）)

年 卷 期：2023年第16卷第1期

页      面：1853-1884页

核心收录：

学科分类：082703[工学-核技术及应用] 08[工学] 0827[工学-核科学与技术] 

基　　金：supported by National Natural Science Foundation of China Grant(42090012) the Hubei Provincial Natural Science Foundation(2021CFA082) National Key Research and Development Program of China(2020YF A0608704) the Fundamental Research Funds for the Central Universities through Wuhan University under Grant 2042022dx0001 

主　　题：Downward shortwave radiation product validation remote sensing products reanalysis products 

摘      要：Downward shortwave radiation(DSR)is a critical variable in energy balance driving Earth’s surface ***-derived and reanalysis DSR products have been developed and continuously improved during the last ***,as those products have different temporal resolutions,their performances in different time scales have not been well-documented,particularly in *** study intended to evaluate several DSR products across multiple time scales(***,1-hourly,daily,and monthly average)and ecosystems in *** DSR products,including GLASS,BESS,CLARA-A2,MCD18A1,ERA5 and MERRA-2,were evaluated against ground measurements at Chinese Ecosystem Research Network(CERN)and integrated land-atmosphere interaction observation(TPDC)sites from 2009 to *** instantaneous DSR of MCD18 showed a root mean square error(RMSE)of 146.02 W/m^(2).The hourly RMSE of ERA5(155.52 W/m^(2))was largely smaller than MERRA-2(188.53 W/m^(2)).On the daily and monthly scale,BESS had the most optimized accuracy among the six products(RMSE of 36.82 W/m^(2)).For the satellite-derived DSR products,the monthly accuracy at CERN can meet the threshold accuracy requirement set by World Meteorological Organization(WMO)for Global Numerical Weather Prediction(20 W/m^(2)).