Can we add any logic/convenience on guessing Interpolators for FESOM2? Because now they are not set at all, which means that a pset.execute() will fall back to the default interpolate for UXGrids?

If it's really up to the user how to interpolate, perhaps add a keyword argument (with a sensible default)?

Or can we at least provide a warning that the user still needs to set Interpolators?

I ended up removing the interpolator assignment in the last commit.

We don't want to provide this convenience here, due to the fact that some variable placements are not supported (e.g. on an edge), but we don't want to prevent someone who is building a new interpolator from leveraging this new from_fesom2 method.

Some datasets, like the ones we've been working with, have variables that are on multiple locations (e.g. faces and nodes), so having a single argument for interpolation wouldn't cover all cases for a dataset.

I'll get an issue open for adding the other basic interpolator methods and adding this functionality to from_fesom2.