Snow and Ice Data

Data Set Resolution Coverage Web Link
National Snow and Ice Data Center (NSIDC). 1 km US and up to 58°N ftp://sidads.colorado.edu/DATASETS/NOAA/G02158/
FTP website for downloading the files - Ice Mapping System (IMS) Daily Northern Hemisphere Snow and Ice Analysis at 4 km and 24 km Resolution.  4 km and 24 km Northern Hemisphere ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G02156/
NOAA United States National Ice Center Data for snow and ice cover images only Northern Hemisphere http://www.natice.noaa.gov/ims/
NOAA United States National Ice Center  0.5° and 0.25' Global http://modis-snow-ice.gsfc.nasa.gov/