Geoscience Reference
In-Depth Information
Polar
easterlies
Midlatitude
westerlies
Northeast
trade winds
ce Z
Southeast
trade winds
Polar
easterlies
Midlatitude
westerlies
(a)
Polar high
Polar cell
Polar
jet stream
Easterlies
Ferrel cell
Subtropical
jet stream
Polar front
Westerlies
Northeast trade winds
Hadley
cell
Intertropical Convergence Zone (doldrums)
Hadley
cell
Southeast trade winds
Westerlies
Subtropical
jet stream
Polar front
Ferrel cell
Easterlies
Polar
jet stream
Polar cell
Polar high
(b)
Figure 6.16 The global circulation model.
(a) This three-dimensional diagram illustrates the basic flow of air in
cross section as well as top views. Notice the various convection loops that exist around the surface of Earth. (b) A
two-dimensional map of the world shows the directions of winds across various bodies of land and water.
