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.
Product presentation:
http://cersat.ifremer.fr/data/discovery/by_product_type/gridded_products/psi_sea_ice_drift
http://cersat.ifremer.fr/data/discovery/by_product_type/gridded_products/psi_amsr_drift
An overview is available at:
ftp://ftp.ifremer.fr/ifremer/cersat/products/gridded/psi-drift/quicklooks/arctic/amsre-merged/
