Evaluation of MERIS Case-II Water Processors in the Baltic Sea

Abstract

Four MERIS Case-II Water Processors are studied, compared and evaluated: Coastal Case 2 Regional Processor, Boreal Lakes Processor, Eutrophic Lakes Processor and FUB/Wew Water Processor. In situ data from the Baltic Sea have been used to evaluate the water constituent estimations. In addition, the effect of adjacency effect ICOL on the estimation has been analyzed. For this purpose, a set of tools has been developed to automatise the evaluation process and make the comparisons with large amounts of MERIS products and in situ data. Results show that the processors are far from being accurate. Both absolute errors and estimation concentrations are in the same order of magnitude. Coastal Case 2 Regional provides the best performance in the studied area of the Baltic Sea.