Re: 20041123: 20041122: GDVINT question

Hi again Steve,

I figured out the problem, and it wasn't with GDVINT.  It stemmed from 
my lowering of the base state temperature for the newest version of WRF 
in the WRF to GEMPAK converter I'm using.  That generated heights that 
were too low at all pressure levels, and I'm assuming that is what 
caused it to not interpolate correctly to 1000 mb.  If I fix the base 
state temperature problem in the original conversion, the GDVINT program 
works correctly.

Sorry for bothering you, and have a great holiday.

Thanks,
Mike

Michael J. Brennan
Graduate Research Assistant
Department of Marine, Earth and Atmospheric Sciences
North Carolina State University
Email: address@hidden
Phone: (919) 515-1447

Unidata Support wrote:
> Michael,
>
> Sounds like you have verified that all your levels
> are present in the WRF file. Was just wondering in case the new version
> had more parameters/times/levels and caused some previous MAXGRD
> to be exceeded.
>
> I could take a look at the file later next week after the holiday.
>
> Steve CHiswell
> Unidata User Support
>
>
>
>
> > From: Michael Brennan <address@hidden>
> > Organization: UCAR/Unidata
> > Keywords: 200411232032.iANKWo7j015139
>
>
> > Hi Steve,
> >
> > I have the same full set of Eta levels in the output as I did at 
> > previous times.  The only difference is that I'm converting output from 
> > a newer version of WRF, so maybe that is the problem.
> >
> > Thanks,
> > Mike
> >
> > Michael J. Brennan
> > Graduate Research Assistant
> > Department of Marine, Earth and Atmospheric Sciences
> > North Carolina State University
> > Email: address@hidden
> > Phone: (919) 515-1447
> >
> > Unidata Support wrote:
> >
> > > Michael,
> > >
> > > The error message you see seems to indicate that GDCINT cannot
> > > interpolate to 1000 mb because that level is not between 
> > > available input levels.
> > >
> > > Is this file missing some lower levels that other files do have?
> > >
> > > Steve Chiswell
> > > Unidata User SUpport
> > >
> > >
> > >
> > >
> > > > From: Michael Brennan <address@hidden>
> > > > Organization: UCAR/Unidata
> > > > Keywords: 200411221536.iAMFas7j007324
> > >
> > >
> > > > Hi Steve,
> > > >
> > > > I know from previous conversations that GDVINT has hardwired limits of 
> > > > the number of parameters and levels it will interpolate to.  However, 
> > > > I'm having a strange problem now.  I've been running GDVINT to convert 
> > > > WRF model output from the eta-level vertical coordinate to pressure 
> > > > coordinates, and its been working fine outputting pressure-level data 
> > >
> > > > from 1000 to 50 mb every 25 mb.
> > >
> > >
> > > > Now, suddenly, I'm having problems converting a particular output file, 
> > > > no matter how many pressure levels I tell it to interpolate too, I get 
> > > > errors at 1000 mb, even when I ask for output only every 50 mb to 100 
> > > > or 200 mb.
> > > >
> > > > TMPK         not interpolated to level =  1000
> > > > HGHT         not interpolated to level =  1000
> > > > UWND         not interpolated to level =  1000
> > > > VWND         not interpolated to level =  1000
> > > > WWND         not interpolated to level =  1000
> > > > DWPK         not interpolated to level =  1000
> > > > QVAP         not interpolated to level =  1000
> > > > OMEG         not interpolated to level =  1000
> > > >
> > > > Do you have any idea why this would happen?  I figured that by reducing 
> > > > the number of pressure levels I asked for I could work around the 
> > > > hardwired limit.
> > > >
> > > > Thanks,
> > > > Mike
> > > > --
> > > > Michael J. Brennan
> > > > Graduate Research Assistant
> > > > Department of Marine, Earth and Atmospheric Sciences
> > > > North Carolina State University
> > > > Email: address@hidden
> > > > Phone: (919) 515-1447
> > >
> > > --
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