Write down the equation for the geostrophic wind. In plain english what does this
equation describe about the relationship between latitude, windspeed and the pressure
Now test your relationship
For a constant pressure gradient force what is the relationship between latitude and windspeed?
Test this relationship by varying the latitude. As you change the latitude what happens to the
magnitude of the coriolis force? Why is this?
Increase the magnitude of the pressure gradient force. What happens to the windspeed? What happens to the coriolis force? Is this what you expected?
Adjust the latitude value to within a few degrees of the equator. What happens to the windspeed? Why does the windspeed change like this? Is this windspeed realistic? Would the geostrophic assumption be valid in the tropics.
Set the pressure gradient force to -4hPa/ 5 degree of latitude
Set the latitude to 40S
Set the friction force to "0"
How should friction change the magnitude and direction of the wind?
Now increase the friction force. What impact does this have on the magnitude and direction of the actual windspeed? In what direction does the Coriolis force act, how does this change as the friction force increases? What is the relationship between the geostrophic and ageostrophic wind.