Re: GRIB to .nc conversion

Hi Owen,

There are two ways you can take this:
1) You can use ncl_convert2nc to get a series of files, and then use
the netCDF operator ncrcat to concatenate the series of files into a
single file. For instance:
ncrcat file01.nc file02.nc file03.nc file01-03.nc
http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator

2) You can use addfiles to read in all the GRIB files at once, and write
out a netCDF file yourself:
http://www.ncl.ucar.edu/Document/Functions/Built-in/addfiles.shtml
http://www.ncl.ucar.edu/Applications/o-netcdf.shtml
(Unless you are dealing with many large arrays/variables, Method 1 under
the 2nd link should work for you.)

Good luck,
Adam

Owen Doherty wrote:
> Dear NCL Talk Community,
>
> I am new to the community, and was unable to find an answer to this
> question in the archives. I have a series of GRIB annual files, each of
> which contains monthly mean SLP fields for each month. It is my
> intention to build a single .nc file from this series GRIB files. It
> appears that "ncl_convert2nc" will produce a series of .nc files, but is
> there an option to produce a single .nc file? Or would I need to first
> convert the files to nc and find another function to concatenate the .nc
> files (suggestions for such a function would be very welcome)?
>
> Thanks in advance for your help in this. Apologies if this question has
> already been addresses and I cannot find the resolution to it.
>
> Warm Regards,
>
> Owen Doherty
>

-- 
--------------------------------------------------------------
Adam Phillips			             asphilli_at_ucar.edu
National Center for Atmospheric Research   tel: (303) 497-1726
ESSL/CGD/CAS                               fax: (303) 497-1333
P.O. Box 3000				
Boulder, CO 80307-3000	  http://www.cgd.ucar.edu/cas/asphilli
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