Support for Multiple LAMs (e.g., AROME-Arctic, MEPS)

[paulina-t]

Description

The anemoi-datasets package would benefit from adding support for multiple Limited Area Models (LAMs), such as AROME-Arctic and MEPS. This enhancement would allow users to simultaneously work with different regional models and improve the package's flexibility for regional forecasting.

Current Behavior

The package currently supports one LAM in addition to the global model.

Desired Behavior

• Add support for an arbitrary number of LAMs, including but not limited to AROME-Arctic and MEPS.
  

• Adapt the `Cutout` class to handle different LAM-specific configurations.  Note that the domains of the LAMs could overlap, in which case a hierarchy system should be implemented.
  

Next Steps

Would it be helpful if I opened a PR to begin implementing this feature?

[b8raoult]

Yes please.