Re: Isent Stuff

Mike,

I have been able to duplicate your problem. I suspect that the rewrite
of
some of the old Fortran routines to C is simply missing one of the rules
for
converting SPFH.

I'll work on this and let you know when Its fixed. In the mean time, you
have
a workaround that suits your needs it sounds like.

Steve Chiswell
Unidata User Support


On Tue, 2007-02-06 at 06:49 -0600, Mike Bender wrote:
> Steve,
> 
> No joy using RELH(tmpc,dwpc).  Gdvint indicates it is using RELH from 
> the PRES grids to compute the THTA surfaces.  A gdinfo shows SPFH (which 
> I think is specific humidity) is output to THTA interpolation (which has 
> always been in the past looking at older saved model data).  I am 
> getting by by using an older version of gdplot and renaming it to 
> gdplot_isent just to get the RH to output.  I have not had to mess with 
> GDVINT in over 15 years (Ron Miller showed me how to use it for isent 
> computations), so this is the first time I have ever really had 
> problems, lucky me I guess.  I will keep digging into this as time 
> allows, but for now, my work around works!
> 
> Mike
> 
> 
> 
> Steve Chiswell wrote:
> > Mike,
> > 
> > Have you tried using the RELH(tmpc,dwpc) function? What grids are
> > available on your 292K THTA coordinate? 
> > 
> > Steve Chiswell
> > Unidata User Support
> > 
> > 
> > On Mon, 2007-02-05 at 07:17 -0600, Mike Bender wrote:
> >> Steve,
> >>
> >> I have noticed with gempak594 that there is a problem using relh in thta 
> >> coords.  I have been gdplot_nc in the past to generate say the 292K 
> >> surface of pressure, wind, and relh.  However now it says it can't find 
> >> "RELH" on the requested grids.  Gdvint worked fine on the NAM and I 
> >> doubled checked it this morning.  This error is occurring on RHEL4 EMT64 
> >> machines and FEDORA CORE 6 32 bit machines.
> >>
> >> I went back and used the previous version of GEMPAK's gdplot program on 
> >> last nights NAM run, and I got RELH to output just fine.
> >>
> >> Oh, one other note, the RHEL4 EMT64 machines had GEMPAK594 compiled into 
> >> them, while the FC6 machines had the pre-compiled binaries loaded in. 
> >> What is very strange is, you can output MIXR! but no RELH.
> >>
> >> Thanks
> >> Mike Bender
> >> Senior Meteorologist/ITO
> >> MMAC, Oklahoma City, OK
> >>
-- 
Steve Chiswell <address@hidden>
Unidata