[RegCNET] Geopotential heights

[Simon Krichak]

Hi Marc,

Did you try to use the /Input/tools/SIGMAtoP.f  ?

Simon

----- Original Message ----- 
From: "Marc Pace Marcella" <marcpace at MIT.EDU>
To: <regcnet at lists.ictp.it>
Sent: Friday, July 14, 2006 5:01 PM
Subject: [RegCNET] Geopotential heights


> 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
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