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Re: problems with NAM 211 netCDF file

On Mon, 10 Apr 2006, Don Murray wrote:

> Hi Guys-
>
> Gary Lackman (User Comm member) was trying to load in
> isosurfaces of aboslute vorticity from the NAM 211 netCDF files
> cataloged at:
>
> http://motherlode.ucar.edu:8080/thredds/idv/rt-models.1.0.xml
>
> He selects this data source, but when he loads it into the
> IDV, no display shows up.  The problem is twofold:
>
> - the netCDF file has the vertical coordinate as level which
> are pressure levels every 50 mb.  Absolute vorticity only
> comes in on 5 levels (1000, 850, 700, 500, 250).
> - there is only data for 1000 mb in these files.
>
>  From a client perspective, I would like to get a grid
> that only lists the levels that there is data for (or
> supposed to be).  Can the CDL be changed to have a
> vertical coordinate for absvor which is different from
> level?
>
> For the second problem, there appears to be a decoding
> issue.  If I use the grib1 files in the motherlode thredds
> catalog, I get the correct vertical dimension (5 levels).
> Can one of you look into this issue?

problem was pqact entry was wrong for the netCDF file, ie

for raw grib  HRS     ^[YZ].(Q)... KWB.

for netCDF    HRS     ^Y.(Q)... KWB.

fixed on motherlode

robb...


>
> As discussed in the user comm meeting, these types of issues
> get blamed on the IDV since we are the window to the data
> repository.
>
> Thanks.
>
> Don
> *************************************************************
> Don Murray                               UCAR Unidata Program
> address@hidden                        P.O. Box 3000
> (303) 497-8628                              Boulder, CO 80307
> http://www.unidata.ucar.edu/staff/donm
>          "Time makes everyone interesting, even YOU!"
> *************************************************************
>
>

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================