Force of Friction 4
1004 mb
1008 mb
The decrease in wind speed and deviation to lower pressure
depends on surface roughness.
Smooth surfaces (water) show the least
slowing and turning (typically 20o-30o from geostrophic).
Rough surfaces (mtns) show the most
slowing and turning (typically 30o-40o from geostrophic).
Mtns
Water
20o-30o
30o-40o
