<Li> Oymyakon, Sakha Republic, Russia (Dwd) </Li> <Li> Seymchan, Magadan Oblast, Russia (Dwd) </Li> <P> In the Köppen climate system, polar climates are defined as the warmest temperature of any month is below 10 ° C (50 ° F). Polar climates are further divided into two types, tundra climates and icecap climates: </P> <P> Tundra climate (ET and ETf): Warmest month has an average temperature between 0 and 10 ° C. These climates occur on the northern edges of the North American and Eurasian land masses (generally north of 70 ° N although it may be found farther south depending on local conditions), and on nearby islands . ET climates are also found on some islands near the Antarctic Convergence, and at high elevations outside the polar regions, above the tree line . </P>

Ice sheets and tundra are typical of which koppen climate category