[ncl-talk] reading ECMWF grib2 files

[mamadoulamine.mbaye at ucad.edu.sn]

The easiest way is to install grib_to_netcdf form ECMWF

https://software.ecmwf.int/wiki/display/GRIB/grib_to_netcdf

[https://software.ecmwf.int/wiki/s/en_GB/5997/6f42626d00e36f53fe51440403446ca61552e2a2.108/_/images/logo/confluence-logo.png]<https://software.ecmwf.int/wiki/display/GRIB/grib_to_netcdf>

grib_to_netcdf - GRIB-API - ECMWF Confluence Wiki<https://software.ecmwf.int/wiki/display/GRIB/grib_to_netcdf>
software.ecmwf.int
Produce NetCDF with data type of FLOAT (32bit floating point, for higher precision). Note these types were chosen to provide a reasonably wide range of trade-offs ...


Best Regards,

Mamadou

________________________________
De : ncl-talk-bounces at ucar.edu <ncl-talk-bounces at ucar.edu> de la part de Dave Allured - NOAA Affiliate <dave.allured at noaa.gov>
Envoyé : dimanche 28 février 2016 15:14
À : Jaromir Jakacki
Cc : ncl-talk at ucar.edu
Objet : Re: [ncl-talk] reading ECMWF grib2 files

Jaromir,

No, NCL does not write grib2 format, it only reads it.  This is in the documentation for supported file formats.

http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclFormatSupport.shtml#GRIB
[http://www.ncl.ucar.edu/Images/ncl-b4.jpg]<http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclFormatSupport.shtml#GRIB>

NCL Language Reference Guide: FormatSupport<http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclFormatSupport.shtml#GRIB>
www.ncl.ucar.edu
NCL Home > Documentation > Manuals > Reference Information on supported data formats. This page provides more detailed information about each of the supported data ...



--Dave


On Sun, Feb 28, 2016 at 3:27 PM, Jaromir Jakacki <jjakacki at iopan.gda.pl<mailto:jjakacki at iopan.gda.pl>> wrote:
Hi,
I do not have answer for this question - so sorry for that - i do not
any experience with ncl. But i would like to create grib2 file from
netcdf. Is it possible to do it using ncl?
thanks,
Jaromir




On 28/02/16 11:10, R Phani wrote:
> The file prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb has been placed on the ucar ftp server.
>
> ncl_convert2nc also doesn't work with this file.
>
> ------------
> $ ncl_convert2nc prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb
> Processing file: prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb...
>   Copyright (C) 1995-2013 - All Rights Reserved
>   University Corporation for Atmospheric Research
>   NCAR Command Language Version 6.1.2
>   The use of this software is governed by a License Agreement.
>   See http://www.ncl.ucar.edu/ for more details.
> getpdstemplate: PDS Template 4.61 not defined.
> warning:Error unpacking GRIB record section 4.
> fatal:Could not open (prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb)
> Segmentation fault (core dumped)
> -------------
>
> Why ncl_convert2nc fails for ECMWF grb2 files?
>
> Phani.
>
> ----- Original Message -----
> From: "R Phani" <rphani at tropmet.res.in<mailto:rphani at tropmet.res.in>>
> To: "NCL" <ncl-talk at ucar.edu<mailto:ncl-talk at ucar.edu>>
> Sent: Saturday, February 27, 2016 11:06:57 AM
> Subject: reading ECMWF grib2 files
>
> Hi,
>
> I am having problems in opening the S2S ECMWF files with NCL.
>
> $ module load GNU-ncl/6.3.0
> $ ncl
>   Copyright (C) 1995-2015 - All Rights Reserved
>   University Corporation for Atmospheric Research
>   NCAR Command Language Version 6.3.0
>   The use of this software is governed by a License Agreement.
>   See http://www.ncl.ucar.edu/ for more details.
> ncl 0> f=addfile("S2S/prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb","r")
> getpdstemplate: PDS Template 4.61 not defined.
> warning:Error unpacking GRIB record section 4.
> ncl 1> quit
> $ module load GNU-ncl/6.2.0
> $ ncl
>   Copyright (C) 1995-2014 - All Rights Reserved
>   University Corporation for Atmospheric Research
>   NCAR Command Language Version 6.2.0
>   The use of this software is governed by a License Agreement.
>   See http://www.ncl.ucar.edu/ for more details.
> ncl 0> f=addfile("S2S/prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb","r")
> getpdstemplate: PDS Template 4.61 not defined.
> warning:Error unpacking GRIB record section 4.
> fatal:Could not open (S2S/prate_ecmwrf_2000_2015_reforecast_04-02_720hrs_0.5x0.5.grb)
>
>
> How to get/install PDS Template 4.61?
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