[GRASS-user] Import CORDEX data in GRASS

Johannes Radinger johannesradinger at gmail.com
Wed Oct 23 10:49:30 PDT 2019

Hi Markus, hi all,

thanks for your help!

I just uploaded two example data files (modelled precipitation at 0.11
degrees) of EURO CORDEX data with rotated-pole grids to play with:

Attached also a description of the EURO CORDEX data and the grid domains.

Typically such data are processed and manipulated with the CDO toolset
(Climate Data Operators, https://code.mpimet.mpg.de/projects/cdo, see
attached in the shared folder). CDO can easily load the netcdf data and
even remap it to other grids (although I am not sure how that works
exactly); So maybe another way (if rotated pole is not possible with
GRASS/gdal) I could try to transform using CDO and then import into a GRASS


On Mon, Oct 21, 2019 at 10:39 PM Markus Neteler <neteler at osgeo.org> wrote:

> Hi Johannes,
> On Fri, Oct 18, 2019 at 2:57 PM Johannes Radinger
> <johannesradinger at gmail.com> wrote:
> >
> > Hi all,
> >
> > I was wondering if anybody is also working with CORDEX data (Regionally
> downscaled climate data - Europe) that are provided via the ESGF platforms
> as netcdf files?
> >
> > I want to import such files in GRASS but first want to create a location
> with the projection of these data. AFAIK the data are in a rotated-pole
> coordinate system (
> https://is-enes-data.github.io/cordex_archive_specifications.pdf) which
> should be supported by GDAL (https://trac.osgeo.org/gdal/ticket/4285)
> however I am unsure in which version of gdal (here I am using 2.2.2 (Ubuntu
> 16LTS, GRASS76)
> >
> > I tried to use the location wizard to read the projection information
> from the netcdf file. However, here only a XY location (unprojected) is
> suggested. So how (and what) do I need to manually specify to define a
> Location that is able to correctly display CORDEX data? Any suggestions?
> Is there anywhere a file to play with?
> best
> Markus
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