The French Research Institute for Exploitation of the Sea (IFREMER) builds global scale sea ice concentration maps from SSM/I at 12.5 km grid resolution and also motion maps from the optimal combination of scatterometer and radiometer data at 62 km resolution at 3, 6 and 30-day lags since 1992. In addition, AMSR drift products at 31 km resolution are available since 2002. All these products are archived at CERSAT, with free access and ongoing processing.