Polar cells are one of the three main types of atmospheric circulation cells found in the Earth's atmosphere. They are located near the poles, specifically in the Arctic and Antarctic regions. In these cells, cold air sinks at the poles and moves towards the equator at high altitudes, creating a circulation pattern that influences weather and climate in polar areas. The sinking air in Polar cells leads to high-pressure systems, which contribute to the formation of polar deserts. As the air moves towards the equator, it warms up and can create low-pressure areas, affecting weather patterns in mid-latitude regions.