You can get databases for sea ice extent, with daily values and gridded resolution, from NSIDC, JAXA and Uni Hamburg. You can get daily gridded thickness data (average and distribution within a grid cell) from PIOMAS/Polar Science Center. I can't give you the exact download links or how to get the exact files you need, but if you can't manage there are some serious experts around here that can help.
I also suggest to browse the developers corner for some relevant threads.