Winds... Pressure... Isobars -

Wind Circulation - horizontal movement of air

1. Pressure gradient - relative closeness of isobar lines
   
   
   
   
   
2. Coriolis Effect deflects winds flowing down pressure gradients
   
   
   
   "Geostropic winds" flow parallel to isobars
   
   
   
   
3. Friction from landmasses