Permafrost map all

Citation:

Brown, J., O.J. Ferrians, Jr., J.A. Heginbottom, and E.S. Melnikov, eds. 1997. Circum-Arctic map of permafrost and ground-ice conditions. Washington, DC: U.S. Geological Survey in Cooperation with the Circum-Pacific Council for Energy and Mineral Resources. Circum-Pacific Map Series CP-45, scale 1:10,000,000, 1 sheet.

Maps online:
https://nsidc.org/cryosphere/frozenground/whereis_fg.html

http://www.awi.de/nc/en/about-us/service/press/press-release/first-unep-permafrost-report-relies-on-expertise-of-the-alfred-wegener-institute.html