
Hadley cells
Hadley cells are large-scale atmospheric circulation patterns near the equator. Warm air rises at the equator due to intense sunlight, creating low pressure. This air moves toward the poles at high altitude, cools and sinks around 30 degrees north and south, forming high-pressure zones. The descending air then flows back toward the equator at surface level, completing the cycle. These cells help distribute heat from the equator toward the tropics and are responsible for the climate patterns of deserts and tropical rainforests. Hadley cells are fundamental in shaping weather systems and climate zones across the world.