Mapping Arctic Permafrost – The Map Room
▻http://www.maproomblog.com/2016/04/mapping-arctic-permafrost
via Jean-Christophe Fichet sur Twitter
NASA Earth Observatory: “The map above, based on data provided by the National Snow and Ice Data Center, shows the extent of Arctic permafrost. Any rock or soil remaining at or below 0 degrees Celsius (32 degrees Fahrenheit) for two or more years is considered permafrost.” The map differentiates between continuous, discontinuous, sporadic and isolated permafrost. [NASA Earth]
