AQA GCSE Geography · 8035
Specification 3.1.1.3 · Paper 1
The tropical circulation cell extending approximately from the Equator to 30° north or south, with rising air near the Equator and descending air near 30°.
Revise: Global Atmospheric CirculationThe Hadley cell extends approximately from the Equator to 30° north or south. Strong heating causes air to rise near the Equator, creating a low-pressure belt. As moist air rises and cools, clouds and heavy convectional rainfall develop.
- Revise: Tropical Storms: Formation, Structure and Climate Change
A large-scale circulation cell in which air rises near the equator, moves polewards at altitude, sinks in the subtropics and returns towards the equator near the surface.