STAR - Global Vegetation Health Products :
Research on Vegetation: using Snowdata -- Browse Archived Weekly Images
Snow/Ice
Global Multisensor Snow/Ice Cover Map is derived from combined observations of NOAA AVHRR, MSG SEVIRI, GOES Imager and DMSP SSM/I. The algorithm is fully automated. It is an experimental product which data are available since Jan 1, 2006.
URL: https://www.star.nesdis.noaa.gov/smcd/emb/snow/HTML/multisensor_global_snow_ice.html
We aggregated daily snow data to weekly map.