ENH: Add potentialVorticity coordinate metadata#426
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Units copied from https://codes.ecmwf.int/grib/param-db/60 https://codes.ecmwf.int/grib/format/grib2/ctables/4/5/ agrees NCEP has slightly different units for the GRIB2 vertical coordinate: https://www.nco.ncep.noaa.gov/pmb/docs/on388/table3.html I had variables with typeOfLevel=potentialVorticity and noticed I couldn't convert the vertical coordinate to PVU
DWesl
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Aug 6, 2025
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Description
Add metadata for the potential vorticity vertical coordinate/typeOfLevel=potentialVorticity
Units copied from https://codes.ecmwf.int/grib/param-db/60 https://codes.ecmwf.int/grib/format/grib2/ctables/4/5/ agrees
NCEP has slightly different units for the GRIB2 vertical coordinate: https://www.nco.ncep.noaa.gov/pmb/docs/on388/table3.html
I had variables with typeOfLevel=potentialVorticity and noticed I couldn't convert the vertical coordinate to PVU using pint_xarray without setting the units. This PR should allow such a use-case.
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