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Issue #799: UKCM2: Investigate cubes missing coordinate "height2m"#857

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Ed (mo-gill) wants to merge 5 commits intomainfrom
799_missing_coord_height2m
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Issue #799: UKCM2: Investigate cubes missing coordinate "height2m"#857
Ed (mo-gill) wants to merge 5 commits intomainfrom
799_missing_coord_height2m

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Fixes #799

@mo-gill Ed (mo-gill) self-assigned this Mar 19, 2026
@mo-gill Ed (mo-gill) added the bug Something isn't working label Mar 19, 2026
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Do the UKESM1p3 mappings need updating as well? #799 (comment)
I see co2_tavg-h2m-hxy-u has been done but there are some other counterparts still using remove_altitude_coords.

Also, I know the unit testing in processors.py is quite patchy and that the original remove_altitude_coords doesn't have one but it might be worth adding one or a functional test.


This processor also removes the ``HybridHeightFactory`` from the
cube, see https://scitools.org.uk/iris/docs/latest/whitepapers/\
um_files_loading.html#vertical-coordinates for more details.

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I might be mangling the URL but I have a feeling this is dead. I'm not familiar with the original whitepaper document but I am assuming this is the closest to an up to date version.

https://scitools-iris.readthedocs.io/en/stable/further_topics/um_files_loading.html#vertical-coordinates

Would be worth updating the remove_altitude_coords docstring with this link as well.

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I would expect to see all the changes to the UKCM2 mappings plugin to be replicated in the UKESM1p3 plugin.

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CMIP7: UKCM2: Investigate cubes missing coordinate "height2m"

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