ET :  E = Polar  T = Tundra 

Description

The tundra climate is a polar climate sub-type located in high latitudes and high mountains. It is a climate which at least one month has an average temperature high enough to melt snow (0 °C), but no month with an average temperature in excess of 10 °C. In a polar context, winters are long and cold and summers are short and cool. Most precipitation falls as snow.

Temperatures are frequently extremely cold, but can get warm in the summers. Tundra winters are long, dark, and cold, with mean temperatures below 0°C for six to 10 months of the year. The temperatures are so cold that there is a layer of permanently frozen ground below the surface, called permafrost.