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.
Averages temperatures in the winter are between -20 and -30 degrees Fahrenheit. In the summer, an abundance of wildflowers bloom, and average temperatures rise to just under 50 degrees Fahrenheit. The amount of precipitation in the tundra averages between 6 and 10 inches, which is comparable to some deserts. Learn more about Environmental Science