The Hadley cell circulation model represents atmospheric pressure distribution in a simple and understandable way. As previously discussed, the equator to the 35th parallel receives a great deal more heat then the area 35th parallel to the poles. The are around the equator is known as the equatorial low, and exhibits a low pressure due to the high heat. This hot, low pressure air, rises to the poles. Subsequently, the poles are colder then the equatorial low zone, and thus the pressure is higher. So as the low pressure rises to the poles it is cooled and becomes high pressure that returns pack to the equator. This cycle repeats continuously, ensuring that the surface air and temperature is circulated, ensuring the earth is habitable.
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