Geography

Concepts to cover

1. Pressure belts: equatorial low, subtropical highs, subpolar lows, polar highs; seasonal shift
2. Pressure gradient force, frictional force and Coriolis force; geostrophic wind
3. Coriolis force: zero at the equator, maximum at the poles, proportional to wind speed, deflection direction
4. Cyclonic and anticyclonic circulation in each hemisphere
5. General circulation: Hadley, Ferrel and polar cells; ITCZ; trade winds, westerlies, polar easterlies
6. Doldrums and horse latitudes; belts of calm