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Remote Sensing Technology and Application  2016, Vol. 31 Issue (1): 126-133    DOI: 10.11873/j.issn.1004-0323.2016.1.0126
    
Influence of Suspended Particulate Matter on Chlorophyll\|a Retrieval Algorithms in Yangtze River Estuary and Adjacent Turbid Waters
Chen Yuli,Shen Fang
(State Key Laboratory of Estuarine and Coastal Research,
East China Normal University,Shanghai 200062,China)
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Abstract  

Combined with bio\|optical model of the Yangtze River Estuary and adjacent water,this study utilized underwater light filed simulation model Hydrolight to obtain remote sensing reflectance spectra of various water types.The sensitivity of remote sensing reflectance to suspended particulate matter(SPM)and the influence on four kinds of chlorophyll\|a(Chla)retrieval algorithms(two\|band algorithms,three\|band algorithm,fluorescent light height(FLH)algorithm,synthetic chlorophyll index(SCI)algorithm)by SPM were analyzed.Results showed that the RSME between the Hydrolight simulated remote sensing reflectance and that of in situ measurements were smaller than 0.01 sr-1,with higher simulation accuracy of remote sensing reflectance from 550 nm to 725 nm.The impact of SPM on remote sensing reflectance decreased with an increase of Chla concentration,which means a decrease of sensitivity.The two\|band and three\|band algorithms were suitable for chlorophyll\|a retrieval with low SPM concentration.FLH was highly influenced by SPM when retrieving Chla,while SCI exhibited better potential of dismissing the influence of SPM when retrieving Chla in highly turbid waters.

Key words:  Chlorophyll-a      Suspended particulate matter      Remote sensing reflectance      Retrieval algorithms      Yangtze river estuary     
Received:  16 December 2014      Published:  05 April 2016
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Chen Yuli,Shen Fang. Influence of Suspended Particulate Matter on Chlorophyll\|a Retrieval Algorithms in Yangtze River Estuary and Adjacent Turbid Waters. Remote Sensing Technology and Application, 2016, 31(1): 126-133.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2016.1.0126     OR     http://www.rsta.ac.cn/EN/Y2016/V31/I1/126

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