Analysis of the Synergies between Passive Radiometer, Altimeter, and Scatterometer, for Improved Sea Ice Parameter Estimates

Sea ice concentration, sea ice thickness, and snow depth over sea ice are important physical parameters for modeling the cryosphere. We present here preliminary results of a method to combine passive radiometer, altimeter, and scatterometer, and to evidence their synergy. The benefit of merging the data from several instruments at level 1 is emphasized, through the use of a classification methodology. This work is performed in the framework of the preparation of the future Copernicus missions CIMR and CRISTAL, that will fly at the same time as ASCAT on board MetOp-SG.