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.
During summer, the temperature is an average of 3-12 degrees Celsius with sun shining nearly 24 hours a day in the Arctic Tundra. Therefore, the Arctic Tundra is also known as the Land of the Midnight Sun. During the summer, the weather is warm resulting in snow melting.