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《Resources and Environment in the Yangtze Basin》 2009-11
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QUANTITATIVE RETRIEVAL FOR SUSPENDED SEDIMENT CONCENTRATION BY USING MERIS SATELLITE DATA IN THE YANGTZE RIVER ESTUARY

LIU Xiao-li,SHEN Fang,ZHU Wei-jian,LIU Xi(State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China)  
Suspended sediment concentration(SSC) is one of the most significant parameters of water quality.Acquiring spatial and temporal distribution of SSC is helpful in water environment monitoring and sediment distribution investigation.In this paper,a brief introduction of data format of Medium Resolution Imaging Spectrometer(MERIS) is firstly made before the comparison among MERIS.SeaWiFS and MODIS.It has great advantage of band setting and the radiometric sensitivity,and will contribute enormously to the ocean color research.As the error between the MERIS Level 2 and in-situ data is large in China high-turbid coastal water,the retrieval algorithm should be modified according to the characteristics of caseⅡwaters.And then the algorithm is applied to three summer normal tidal images in 2005 after atmosphere correction.The error between the retrieval and the in-situ data is descended to 53 percents,which is lower than the error between MERIS Level 2 and in-situ data.So the empirical model developed in this paper is superiority in the Yangtze River.At last,SSC distribution map of 15th.Aug.is given with some preliminary analysis.
【Fund】: 国家自然科学基金项目(40871165);; 海洋公益性科研专项(9200705020)
【CateGory Index】: TP79
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