Beware: The data linked to below may be inaccurate, incomplete, or just plain wrong. As always, triangulate your data, critically examine the data, look at what organisation produced it and what agenda they may have, and beware that there may be disputes over some of the data.

Snow/Ice

Natural Disasters

Land Cover

Ecology

Mineral Resources

General Data Sets

https://freegisdata.rtwilson.com/