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  • Water quality monitoring by Thematic Mapper in coastal environments : A performance analysis of in-water algorithms and atmospheric correction procedures


The Thematic Mapper's ability to monitor localised phenomena associated with anthropogenic pollution in coastal waters has been investigated with reference to experimental data collected on a test site in the Gulf of Naples. In-situ measurements yielded the algorithms for chlorophyll and sediment retrieval as well as an optical model for the computation of the subsurface reflectance as a function of water composition, specific to the site. The algorithm's performance was assessed through a sensitivity analysis. Sensitivity analysis techniques were similarly used to evaluate the performance in the coastal environment of three atmospheric correction models. A comparison with sea-truth data shows a satisfactory correspondence between measured concentrations and concentrations retrieved from the TM data by the atmospheric correction procedures and in-water algorithms.

Additional information

Authors: TASSAN S, JRC Ispra (IT);RIBERA D'ALCALA, Biological Oceanography Laboratory, Napoli (IT)
Bibliographic Reference: Article: Remote Sensing of Environment, Vol. 45 (1993) No. 2, pp. 177-191
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