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20000614: 20000614: gdthgt and gvcord=hght



>From: weather <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200006142328.e5ENSCT02707

>I have read over the manual on gddiag and don't quite see how to use
>it to produce another u,v filed at some other height.  Could you give
>me some help? 
>
>Thanks,
>Robert
>

Robert,

If you want to copy the 10m U and V to the 2m level, then:

GLEVEL = 10
GVCORD = hght
gfunc = urel
grdnam = urel@2
r

gfunc = vrel
grdnam = vrel@2

I know that its not really what you want to do, but it probably is OK 
synoptically
if not for the log linear law with Von Karmen in the boundary layer.

Steve Chiswell