Suspended Particulate Matter (SPM) mapping from MERIS imagery.Calibration of a regional algorithm for the Belgian coastal waters

摘要

A hydro-optical algorithm based on reflectance at 555nm has been used in the past for suspended particulate matterrnconcentrations (SPM) retrieval from SeaWiFS over the Belgian coastal (case II) waters in Southern North Sea. Thernextra spectral resolution of MERIS offers the possibility of improvements, though necessitates algorithm recalibration.rnThis study presents the calibration of the hydro-optical model used to derive SPM from MERIS reflectance for Belgianrncoastal waters. The model is based simply on reflectance at one suitably-chosen band. Regression analysis is carriedrnout for seaborne measurements of reflectance and SPM taken over our region of interest, to determine and calibrate thernbands best suited for SPM detection. Sensitivity of the method to errors is studied.