Interpretation of parametric maps obtained by means of "blue to green ratio" over coastal waters

This paper deals with the effects of dissolved organic matter on the "blue to green ratio" used for pigment estimation in oceanography. A model of ocean colour by Sathyendranath et al. (1989), with slight modifications, was used to compute mean reflectance values in the blue and green channels of a radiometer. A statistical analysis was performed to find the best correlation between the logarithms of "blue to green ratio" and the logarithms of marine parameter concentrations. The results suggest that the maps retrieved by means of "blue to green ratio" should be interpreted in terms of a new parameter, that is a cumulative-concentration of pigments and dissolved organic matter.<
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