 You should understand the 3 cellular model of atmospheric circulation, including divergence, convergence and the position of jet streams  You should recognise the applications and limitations of the 3 cell model.

Applications? Weaknesses ?

 Brainstorm all of the things that you would include in an essay from January 2003 question;  Outline the main causes of air movement. (5)  Discuss the application and limitations of the tri-cellular model. (20).

 Look on page 38 of your text book, how does the tri cell model work in practise?

 Activity on page 497 of Cook et al, a photograph analysis question (you will need to use an atlas for the latitudes of these places).