GrADS 2.0.a0

Luca Villa villa at FISICA.UNIGE.IT
Sun Jan 27 05:18:55 EST 2008


Dear All,
where can I find and download the new wgrib2 code?

Thanks
Luca


Wesley Ebisuzaki wrote on date 25-01-2008 19:56:
> All,
>
> FYI: grib2ctl.pl has been replaced by g2ctl for GRIB2 files.
>
>      http://www.cpc.ncep.noaa.gov/products/wesley/g2ctl.html
>
> To run g2ctl, you'll need wgrib2 and perl.
>
>     http://www.cpc.ncep.noaa.gov/products/wesley/wgrib2/index.html
>
>                               Wesley
>
>
>
> Jennifer Adams wrote:
>> At long last, GrADS 2.0.a0 is released!
>>
>> Because NCEP will soon be distributing forecast data only in GRIB2
>> format, we are releasing an alpha version of GrADS 2.0. We are still
>> actively testing and debugging and documenting the code, but it is
>> working well for us internally at COLA, and we feel the time is right
>> for a public release.
>>
>> GrADS 2.0 is a significant upgrade from 1.9 in many ways:
>> -- it has 'dtype grib2' and a new utility 'grib2scan'
>> -- it has a fifth dimension for gridded data sets
>> -- internal data handling is all double precision
>> -- undef handling is cleaner
>> -- the netcdf/hdf interface has been streamlined
>> -- the executable names are different:
>>        gradsc, gradsnc, and gradshdf are merged into 'grads'
>>        gradsdods is now 'gradsdap'
>>
>> Because of these changes, and others that are still in the works but
>> haven't been implemented yet, there are some features which we can no
>> longer support. The UDF interface is disabled, but will be return soon
>> in a new implementation that should be easier to use. The lterp()
>> function (a widely used UDF) is now built-in. The LATS interface is
>> gone, but implementing a new path for writing out netcdf with 'gxout
>> fwrite' is very high on our to-do list. Templating with the 'sdfopen'
>> command is also no longer supported, and some special cases of binary
>> file formats are now a legacy: "var" and "z" transposed data
>> (units=-1,1) and "x" and "y" transposed data (units=-1,30). The format
>> of the GrADS metafile will also change, as graphics improvements are
>> implemented. The gv utility will not work with GrADS 2.0. Otherwise,
>> for now, everything you do with GrADS should work in version 2.
>>
>> I have posted the source code and two binary tarballs in:
>>      ftp://iges.org/grads/2.0/ <ftp://iges.org/grads/2.0/>
>> Binaries are for RedHatEnterpriseLinux5 (x86_64) and Intel Macs. If
>> you are using GrADS on a unix platform of a different flavor, I highly
>> recommend trying to build from source, since I will be posting updates
>> to the source code very frequently. A list of the required
>> supplemental libraries is in the documentation at
>> http://iges.org/grads/gadoc/supplibs.html
>> <http://iges.org/grads/gadoc/supplibs.html> . Almost all of these
>> supplibs are upgrades from previous versions and build easily. I will
>> update this doc page with additional guidance for building from source
>> as soon as I can.
>>
>> To get you started with NCEP GRIB2, I have also posted a couple of
>> sample descriptor files:
>>    http://iges.org/grads/gadoc/gfs.ctl
>> <http://iges.org/grads/gadoc/gfs.ctl>
>>    http://iges.org/grads/gadoc/gfsens.ctl
>> <http://iges.org/grads/gadoc/gfsens.ctl>
>> The documentation on descriptor file elements (
>> http://iges.org/grads/gadoc/descriptorfile.html )has been updated with
>> information on the EDEF entry and GRIB2 handling.
>>
>> Please post comments and questions and bug reports here. As always, I
>> must be able to reproduce a problem on my own systems in order to fix
>> it, so keep that in mind when reporting bugs.
>>
>> Jennifer
>>
>> --
>> Jennifer M. Adams
>> IGES/COLA
>> 4041 Powder Mill Road, Suite 302
>> Calverton, MD 20705
>> jma at cola.iges.org <mailto:jma at cola.iges.org>
>>
>>
>>
>
>

--


Dott. Ing. VILLA Luca
*********************************************
University of Genoa
Department of Physics
Atmospheric and Oceanic Physics Group
via Dodecaneso, 33.
16146 Genova - Italy

tel: +39 010 353 6478
fax: +39 010 353 6354
e-mail: villa at fisica.unige.it
        luca.villa27 at tiscali.it
http://www.fisica.unige.it/~villa/
*********************************************



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