A PROMICE grid of fractional ice cover with 1 km postings and 5 km postings are available for everyone and at no charge. If interested in using the data, please make a request by filling in the form. Also, please include a few sentences stating how you intend to use the data.
The grids were produced from the vectors map by Citterio and Ahlstrøm (2013) to exactly match the projection and extent of the datasets by Bamber et al. (2013). The file format is GeoTIFF, which include all necessary projection and georeferencing information for use within GIS applications, and pixel values range from 0 for no ice to 1 for full ice cover. A brief overview of the PROMICE mapping work can be found here .