Global Atmospheric Circulation Model

Global Atmospheric Circulation Model

1. Air Cells

   • Hadley Cells
     • Between the equatorial and the subtropical belts
     • High Pressure
   • Ferrell Cells
     • Between the subtropical and the polar belts
     • Low Pressure
   • Polar cells
     • Above or below the polar cells (depending on the hemishpere)
     • High Pressure
   • They are kept on the Earth because of the tropopause in the atmosphere

2. Trade Winds

   • Caused by the Coriolis Effect
     • Apparent curvature of an object that is moving in a straight line; caused by the Earth's rotation
   • Compass point show where the wind is coming from
     • NW Trade Winds mean that the wind is coming from the north-west

3. Latitude belts

   • Equatorial
     • Sahara
     • High-pressure system
   • Subtropical high
     • Spain
     • Low Pressure System
   • Subtropical low
     • Argentina
     • Low Pressure System
   • Polar high
     • North Pole
     • High Pressure system
   • Polar low
     • South Pole
     • High Pressure System

4. High and low pressure systems

   • High
     • Stable weather
     • Sahara Desert
   • Low
     • Erratic weather
     • UK