EN4 cmorizer

[hanellis]

Description

Adds support for EN4 monthly ocean data to ESMValTool.
Currently, ESMValTool lacks monthly 3D observational datasets for ocean temperature and salinity. This addition fills that gap by integrating EN4 monthly data, enabling more comprehensive ocean diagnostics and evaluations.

• Closes EN4 CMORizer #4192
• Link to documentation:

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New or updated data reformatting script

• 🛠 Documentation is available
• 🛠 The dataset has been added to the CMOR check recipe
• 🛠 The dataset has been added to the shared data pools of DKRZ and Jasmin by the @ESMValGroup/OBS-maintainers team
• 🧪 Numbers and units of the data look physically meaningful

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[hanellis]

Hi, is there someone who could review this PR please? I have a few failing tests so any help would be much appreciated!

[valeriupredoi]

hi @hanellis there seems to be an issue with one of the yaml files, maybe a bit of a bad formatting (looks like an extra empty space), could you please check them? 🍺

[valeriupredoi]

looks good, many thanks @hanellis - just one obesrvation about missing tos and sos 🍺

[valeriupredoi]

very many thanks @hanellis 🍺 One of you good folks could do a scientific review, when you have a minute, please? @axel-lauer @jlenh @LisaBock - cheers!

[jlenh]

very many thanks @hanellis 🍺 One of you good folks could do a scientific review, when you have a minute, please? @axel-lauer @jlenh @LisaBock - cheers!

Sorry, completely missed that! I can have a look at it later today!

[jlenh]

Thanks a lot Hannah, it looks good! I have only a few comments, notably regarding the cmorized variables like V already suggested 🤓 The outputs look good!

On a technical note, I have managed to run the cmorizer but only for a few years on a simple computer, otherwise I get some HDF5 errors. I am in the process of running the whole thing with a computing node on Levante though.
Can you think of a better way to handle the many opened data files here @valeriupredoi maybe? It seems to crash for me when writing the data.

Eventually we will need somebody (@axel-lauer ?) to transfer the data to the OBS data pool on Levante once it is fully processed (I will send you the file paths by email once it's good to go).

[jlenh]

And forgot the Codacy issues that can be fixed

[hanellis]

Thank you @jlenh for picking this up! I've put through the requested changes. I'll have a think if there's a way to address the many data files on my end but please just let me know if there's anything else I need to do/change in the meantime!