What are the conditions necessary for the formation of sand dunes? Hi, Dunes are formed by interaction with the wind. Wind speeds of 10 to 20 mph,. are necessary for sand to start saltating under the direct pressure of the wind.
Winters are very harsh in Tundra climate. Winter months temperatures are usually between -18 and -50 degrees. Summer temperatures range from 35-50 degrees. High latitudes are the main cause of of the low temperatures. These areas mainly receive indirect sunlight.
Tundra climate is usually found between the 60-75 degree latitude lines. Tundra climate is mainly found along the coast of the Arctic Ocean. Tundra is a transition climate between Ice Cap and Subarctic, similar to Semiarid being a transition between Arid and more humid climate. What Seasons Does it Have? Tundra climate areas experience a a very harsh winter and a cool summer.