Hadley cell
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7 Terms
What is the Hadley circulation?
A tropical atmospheric circulation where warm air rises at the equator, moves poleward, sinks near 30° latitude, and flows back toward the equator.
Why does air rise at the equator?
Strong solar heating warms the air, making it less dense.
What pressure system exists at the equator?
Low pressure due to rising warm air.
What happens to rising air as it moves poleward?
It cools and spreads out in the upper atmosphere.
What happens around 30° latitude in the Hadley cell?
Air sinks, creating high pressure.
Why are many deserts located near 30° latitude?
Sinking air suppresses clouds and rainfall.
What completes the Hadley circulation loop?
Surface winds flowing back toward the equator.
