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Water quality classification of lakes using 250-m MODIS data

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6 Author(s)
Koponen, S. ; Lab. of Space Technol., Helsinki Univ. of Technol., Finland ; Kallio, K. ; Pulliainen, Jouni ; Vepsalainen, J.
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The traditional method used in the water quality classification of Finnish lakes includes the collection of water samples from lakes and their analysis in laboratory conditions. The classification is based on statistical analysis of water quality parameter values and on expert opinion. It is possible to acquire similar information by using radiance values measured with the Earth Observing System Terra/Aqua Moderate Resolution Imaging Spectroradiometer (MODIS). In this letter, the classification accuracy with MODIS data is about 80%. Only about 0.2% of the 20 391 pixels were misclassified by two or more classes, as a four-class classification system is used.

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Geoscience and Remote Sensing Letters, IEEE  (Volume:1 ,  Issue: 4 )