ESS124
Prof.
Jin-Yi Yu
Frictional
Effect on Surface Flow
L
H
pressure gradient force
Coriolis force
L
H
pressure gradient force
Coriolis force
Surface friction
Surface friction
qSurface friction
force slows down the geostrophic flow.
qThe flow turns into (out of) the
low (high) press sides.
qSurface friction
produces convergence into the center of
a low-pressure system and divergence out of the center of a high-pressure system.