CREST Snow Depth Product: Snow depth over the world at 20-km resolution derived from clear-sky microwave (10, 19, 37, and 89 GHz) observations
from the Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument onboard the GCOM-W1 satellite. The algorithm is fully automated. The product is currently on an experimental phase.
Google Earth overlayable snow depth maps are available here
For comments or FTP access to snow depth data, email Carlos Luis Pérez Díaz @ firstname.lastname@example.org.