[RegCNET] Geopotential heights

[Marc Pace Marcella]

Hey guys,
I have a quick question about viewing output in the ATM file.  The results given
for geopotential height seem wrong to me...they are basically just terrain
following.  Im trying to look at the 500mb geo. heights.  Looking at the NCEP
data is fine but trying to discern troughs and ridges with RegCM (z=.51, or any
level for that matter) output looks impossible since it looks more like a
topography map.  Clearly I am doing something wrong, do I need to subtract
another field or lower level heights?  I tried subtracting the heights at the
lowest level (k=18) from the mid level values (k=8 or so) but still no luck. If
you had
any idea what Im doing wrong Id really appreciate it.  Thanks!!

-Marc