Model validation of the polar clouds at Saturn as inferred by Cassini/VIMS data in the visual range

In this study the microphysical, optical and geometrical parameters obtained by Colosimo et al [5] to represent the clouds observed in the South Pole atmosphere of Saturn are used in a radiative transfer model to simulate the corresponding observations from Cassini/VIMS VIS-channel data in the wavelength range 0.84-1 micron. The disagreement between simulated and observed spectra has been interpreted taking into account the different nature of the measurements. Taking into account possible sources of discrepancies, an adjustment of the model parameters is suggested. The proposed values, reduce the difference between the simulations and the measurements from ~ 63% down to ~ 17%.