Ensure degree units by default for lat/lon in xarray #2852
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dopplershift
added
Type: Bug
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Description Of Changes
We intentionally want to assume degrees for our various lat/lon handling with e.g.
lat_lon_grid_deltas, but for xarray we by default were giving 'dimensionless' units when no unit attribute is present (which can happen when attributes are dropped by various xarray functionality).See also #2811, #2836, and #2848.
The solution here ended up being more clean than I feared. (cc @jthielen)
Checklist
lat_lon_grid_deltas(and in turn xarray grid argument magic) fails silently on xarray input with missing lat/lon units due to incorrect unit conversion #2028