22 December 2000 Measurement and modeling of radiance reflectance in Garda Lake
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A simple model which predicts radiance reflectance below the water surface as a function of the concentrations of chlorophyll, colored dissolved organic matter (CDOM), and suspended particulate material (SPIM) was applied in Garda lake, the largest freshwater basin in Italy and one of the most important of the European Union. The model is similar to others developed for oceanic and coastal waters predicting the radiance reflectance as a function of two inherent optical properties of water: the absorption coefficient and the backscattering coefficient. Three stations were sampled in January '98 in the southern part of Garda lake. Samples of water were collected just below the water surface to extract the optically active substances. Two underwater radiometers assembled on the same probe provided the measurement of downwelling irradiance and up welling radiance, respectively. At the same time the apparent optical properties were collected above the water volume by using a spectro radiometer. The simulated radiance reflectance spectra were compared to the ones measured and significant correlations were retrieved.
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Silvia Ferratini, Silvia Ferratini, Claudia Giardino, Claudia Giardino, Donald C. Pierson, Donald C. Pierson, Niklas Stroembeck, Niklas Stroembeck, Eugenio Zilioli, Eugenio Zilioli, "Measurement and modeling of radiance reflectance in Garda Lake", Proc. SPIE 4172, Remote Sensing of the Ocean and Sea Ice 2000, (22 December 2000); doi: 10.1117/12.411703; https://doi.org/10.1117/12.411703

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