On Thu, 5 Feb 2004 23:39:17 -0000, Julian Scarfe wrote in


"Isohume" wrote in message
...
You forgot to account for surface friction....this is what causes the
imbalance between the PGF and coriolis near the surface.

No, take a look at the diagram. I just resolved the forces perpendicular to
the surface friction.

I agree with that, based on the simple model. Julian - did you see my
other post pointing out the friction force at any one height wasn't
necessarily opposite to motion. That makes your calculation miss out a
contribution *from* friction - this has to be incorporated therefore.

--
Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 06/02/2004 07:43:06 UTC