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Difference between revisions of "NetCDF"

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imported>Lang Guenther
(Purpose of these BAWiki Pages: link to GITHUB added)
imported>Lang Guenther
(Purpose of these BAWiki Pages: link to OPULS added)
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These BAWiki pages do describe all NetCDF conventions required to store baw-specific data in NetCDF data files (see [http://www.unidata.ucar.edu/software/netcdf/ ''network common data form'']). I. e. all ''local'' conventions are listed, which go beyond the international agreed-upon [http://cf-pcmdi.llnl.gov/ CF-metadata convention]. These pages are also meant as a discussion ground for agreeing on those additional conventions required.  
 
These BAWiki pages do describe all NetCDF conventions required to store baw-specific data in NetCDF data files (see [http://www.unidata.ucar.edu/software/netcdf/ ''network common data form'']). I. e. all ''local'' conventions are listed, which go beyond the international agreed-upon [http://cf-pcmdi.llnl.gov/ CF-metadata convention]. These pages are also meant as a discussion ground for agreeing on those additional conventions required.  
  
In cases where the international agreed-upon conventions are insufficient, one should first check whether extensions described in  [http://public.deltares.nl/display/NETCDF/netCDF Deltares-Conventions] can be used or not - it is recommended to discuss further required extensions with [http://www.deltares.nl/ Deltares]. The version which has been recommended to become a standard can be found on the [https://github.com/ugrid-conventions/ugrid-conventions GITHUB].
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In cases where the international agreed-upon conventions are insufficient, one should first check whether extensions described in  [http://public.deltares.nl/display/NETCDF/netCDF Deltares-Conventions] can be used or not - it is recommended to discuss further required extensions with [http://www.deltares.nl/ Deltares]. The version which has been recommended to become a standard can be found on the [https://github.com/ugrid-conventions/ugrid-conventions GITHUB]. Further activities related with OpenDAP to extract a selection of data defined on unstructured grids can be found on e. g. [http://docs.opendap.org/index.php/OPULS:_UGrid_Subsetting OPULS].
  
 
The additional conventions should be listed in the global NetCDF attribute ''Conventions'', e. g. in the following way:
 
The additional conventions should be listed in the global NetCDF attribute ''Conventions'', e. g. in the following way:

Revision as of 07:40, 27 November 2013

General Aspects

Purpose of these BAWiki Pages

These BAWiki pages do describe all NetCDF conventions required to store baw-specific data in NetCDF data files (see network common data form). I. e. all local conventions are listed, which go beyond the international agreed-upon CF-metadata convention. These pages are also meant as a discussion ground for agreeing on those additional conventions required.

In cases where the international agreed-upon conventions are insufficient, one should first check whether extensions described in Deltares-Conventions can be used or not - it is recommended to discuss further required extensions with Deltares. The version which has been recommended to become a standard can be found on the GITHUB. Further activities related with OpenDAP to extract a selection of data defined on unstructured grids can be found on e. g. OPULS.

The additional conventions should be listed in the global NetCDF attribute Conventions, e. g. in the following way:

// global attributes:
 :Conventions = "CF-1.4/Deltares-0.1/BAW-0.1" .

The BAW instance of a NetCDF file developed since 2010 is a file of type CF-NETCDF.NC.

Terminology

Global Attributes

Grids

Time Coordinate

Vertical Coordinate

Horizontal Coordinate Reference System

Reduction of Dataset Size

Data

Synoptic Data

Time Series Data

Analysis Data


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