There are multiple reasons that poles are cold. There is less daylight hours in the poles and the sunlight has a higher amount of reflection due to larger amounts of ice, snow and water. This causes heat to be reflected and lower the temperature of the air. In addition, there is less water vapor in the poles due to the lower temperature lowering the capacity for water to evaporate. Less moisture in the air allows energy in the form of heat to escape. The sun’s position around the poles causes the atmospheric length to be longer; leading to a lower amount of radiation actually reaching the surface. These factors lead to the air becoming colder.
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