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Re: NETCDF to GRID file

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  • Subject: Re: NETCDF to GRID file
  • Date: 11 Oct 2005 14:10:30 -0600
Mike,

The dcreanal program is contained in the GEMPAK distribution which you
can obtain through the Unidata web portal:
www.unidata.ucar.edu/software/gempak

The dcreanal program uses the $GEMTBL/grid/ncarncep1.tbl grid parameter
table. If you need just the dcreanal executable, I can provide the
binary and the table.

Running the program works like:
dcreanal input.nc gempak_outfile_template

for example, to create monthly files: 
dcreanal shum.2004.nc YYYYMM.gem

If the file you have has 4 times per day, a monthly file would have
~120 grid times. The usual limit for number of grid times in a GEMPAK
file is 1000, so you would not be able to place all times
in a single yearly gempak file, so use the monthly template.

Steve Chiswell
Unidata User Support

On Tue, 2005-10-11 at 13:27, Mike Bodner wrote:
> Steve,
> 
> I am looking to convert NCAR/NCEP reanalysis files which I downloaded 
> from the CDC site.
> a sample of the file name is  /shum.2004.nc /and it's a 2.5x2.5 grid.
> 
> Hope this helps
> 
> Mike
> 
> Steve Chiswell wrote:
> 
> >Mike,
> >
> >It depends on the source and format of the netcdf file.
> >I provide a NetCDF to GEMPAK grid for NCAR/NCEP reanalysis
> >types of grid files that follow the COARDS conventions for NetCDF
> >files. Otherwise, i'd have to know the source of the file and
> >see the NetCDF header.
> >
> >Steve Chiswell
> >Unidata User Support
> >
> >
> >On Tue, 2005-10-11 at 12:33, Mike Bodner wrote:
> >  
> >
> >>Hi Steve,
> >>
> >>Scott Jacops from NCEP suggested that I contact you with my question.
> >>
> >>Do you know which programs are available to convert a NETCDF file to a 
> >>gird file in GEMPAK? If so, do you know where I need obtain this program?
> >>
> >>Thanks in advance for any help you can provide.
> >>
> >>Mike
> >>    
> >>