[MISC]: xWRF and xESMF for regridding WRF data - ease-of-use and documentation

[jthielen]

What is your issue?

Based on discussion over on xESMF, regridding native WRF data using xESMF has some hurdles that it seems like xWRF would be in a good position to resolve (if it doesn't already do so with current default post-processing). We should consider writing up an example of this use-case for the documentation, and, if needed add new features to streamline doing so.

[lpilz]

Hey @jthielen, this is a great idea! I actually tried to get xESMF to work with WRF-style grids and didn't have any luck, so I hacked my own utility together in the end which took a lot of time and is much slower 🙈. I'd be happy to sink some time into making this possible. Is there any additional work which we have to do for this to actually work or are all the pieces already in place?