Semi-empirical Algorithm for the Retrieval of Ecology-Relevant Water Constituents in Various Aquatic Environments

TittelSemi-empirical Algorithm for the Retrieval of Ecology-Relevant Water Constituents in Various Aquatic Environments
PublikasjonstypeJournal Article
Utgivelseår2009
ForfattereKorosov, A, Pozdnyakov, D, Folkestad, A, Pettersson, LH, Sørensen, K, Schuchman, R
TidsskriftAlgorithms
Volum2
Antall sider470-497
Utgivelsedato10/03/2009
UtgiverMolecular Diversity Preservation International (MDPI)
Nøkkelordoperational algorithm, satellite remote sensing, water quality
Sammendrag

An advanced operational semi-empirical algorithm for processing satellite remote sensing data in the visible region is described. Based on the Levenberg-Marquardt multivariate optimization procedure, the algorithm is developed for retrieving major water colour producing agents: chlorophyll-a, suspended minerals and dissolved organics. Two assurance units incorporated by the algorithm are intended to flag pixels with inaccurate atmospheric correction and specific hydro-optical properties not covered by the applied hydro-optical model. The hydro-optical model is a set of spectral cross-sections of absorption and backscattering of the colour producing agents. The combination of the optimization procedure and a replaceable hydro-optical model makes the developed algorithm not specific to a particular satellite sensor or a water body. The algorithm performance efficiency is amply illustrated for SeaWiFS, MODIS and MERIS images over a variety of water bodies.

URLhttp://www.mdpi.com/1999-4893/2/1/470
DOIdoi:10.3390/a2010470
Refereed DesignationRefereed
Forfatterens adresse

NERSC

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