For 



Ur 



T : lO^C 



Ap : 3 mb and 4mb 



An : isobar spacing measured in 



I Ap 



/'nf An 



where 



- angular velocity of earth, 

 0.2625 rodians/hour 



degrees latitude 



1013.3 mb 



1. 247X10"' gm/cm' 



f : Coriolis parameter : 2 wsin 



0.3 



- latitude in degrees 



P 



30 35 40 45 50 55 60 70 



Degrees Latitude 



(offer Bretschneider, 1952a) 



Figure 3-11. Geostrophic Wind Scale 



3-26 



