Installation • Usage • Documentation
Important
This software is Emerging and subject to ECMWF's guidelines on Software Maturity.
Support level: None. The project is made available as-is, with no guarantee of support. However, bug reports and community contributions are encouraged and appreciated.
GribCheck is a Python tool that validates project-specific conventions of GRIB files. It performs a limited set of checks on GRIB messages to ensure they comply with the project's internal standards and expectations.
Please note that GribCheck is not a general-purpose GRIB validator. For instance, it does not verify whether a file fully complies with the WMO GRIB standard or whether it is a technically valid GRIB file.
pip install grib-checkTo use GribCheck, you need to specify the GRIB convention you want to check. The library currently supports the following conventions:
- tigge : The THORPEX Interactive Grand Global Ensemble (TIGGE)
- lam : TIGGE Limited-Area Model (TIGGE LAM)
- s2s : Subseasonal to Seasonal (S2S)
- s2s_refcst : S2S Reforecasts
- uerra : Uncertainties in Ensembles of Regional ReAnalysis (UERRA)
- crra : Copernicus Regional Reanalysis (CERRA)
Experimental conventions that are under development include:
You can specify the convention using the -C or --convention command-line argument.
For example, to check a GRIB file of type "tigge", you would run the following command:
grib-check -C tigge /path/to/file.grib2The output provides the result of each check performed on the GRIB messages in the file. Each check may be annotated with an additional context or information of the check performed which may be useful for diagnostics. Checks typically have the status FAIL or PASS. Sometimes, however, a status cannot be assigned - for example if a test is skipped or message is purely informational - in which case the status "----" is used.
The report follows a hierarchical structure, where checks can contain sub-checks and assertions, forming branches. If an assertion fails, the failure propagates upward, and the entire branch is marked as failed.
The following command demonstrates a check on a file of convention "s2s". For demonstration purposes, we'll change the convention to "uerra" to intentionally trigger check failures and showcase the output.
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