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Comment: Fixes to link and add new known issue.

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All known issues about CORDEX data are documented through the ES-DOC Errata Service: https://errata.es-doc. org/. The Errata Service also includes a command-line interface and an API to request the issue database for a specific dataset or file.

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  • Please have a look on the Errata Service to be warned about deprecated CORDEX runs that will be retracted in the future.
  • Please note that not all combinations of models and domains exists. This feature is due to the different CORDEX initiatives/consortiums that do not involve the same data producers using the same RCMs.
  • Please note that not all the combinations of models and variables exist. This feature is inherited from the ESGF system, where the main target is to publish as much as possible data and even publish incomplete datasets, which might be of use. This allows to have more data available with the price that not everything is fully complete. 
  • There is a metadata inconsistency issue for the CCCMA_CANESM2/CCCMA_CANRCM4 model for the NAM-22 domain. The geospatial metadata available in the file is incorrect, which results in a shift of the data values with respect to the continent contours while plotting. A new errata note was created, see at https://errata.ipsl.fr/static/view.html?uid=6493a0cc-f2ab-130b-95d2-6aa2a36dd2cf and simultaneously the problem was reported back to the data producers.
  • Issues have been detected with some fields from the RCM, CLMcom-CLM-CCLM4-8-17, including clt, rlds, ps, pr, rsus. In particular, there may be isolated non-physical values for some grid cells.

Some additional minor points which are useful to note:

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A training resource in python is available via a Jupyter Notebook on the C3S data tutorials page here: https://ecmwf-projects.github.io/copernicus-training-c3s/projections-cordex.html

The C3S EQC function produces quality assessments of CDS data in the form of Jupyter Notebooks. While these are in the context of specific user questions, they may serve as useful examples more generally. The assessments available for the CORDEX-CMIP5 data can be found here: https://ecmwf-projects.github.io/c3s2-eqc-quality-assessment/Climate_Projections/climate.html.

Frequently Asked Questions (FAQs) 

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