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《Remote Sensing Technology and Application》 2012-05
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Evaluation of MODIS Shortwave Albedo Products over ChinaFLUX Sites

Wu Hongyi,Tong Ling,Chen Yunping(College of Automation,University of Electronic Science and Technology of China,Chengdu 611731,China)  
The use of land surface albedo products from satellite observations is based on the evaluation of their inversion quality.In this paper,MODIS surface shortwave albedo products are compared with in-situ measurements from ChinaFLUX.Eight sites over forest,grassland and cropland are chosen in this study.Corresponding MODIS data in 2004 are extracted from surface albedo products(MCD43B3).The results show MODIS shortwave albedo products match ground measurements well except some cases with snow cover.The error of all the eight sites is about 0.002,and root-mean-square error(RMSE) can reach 0.028 without snow cover situations.This paper analyses the factors that cause the errors and proposes some suggestions for improvement of inversion quality.
【Fund】: 国家863计划项目(2009AA122101);; 国家自然科学基金项目(40871160、60841006)资助
【CateGory Index】: TP732
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