MISOMIP2 ocean interpolation test cases

Here we provide a few test cases for the MISOMIP2 ocean interpolation package (https://github.com/nicojourdain/misomip2). The aims are : 

help users check that this package works well in their python environment before adapting it to their model outputs.

help developers check that new developments work for all types of model.

The test cases characteristics are the following:

NEMO_test : 2 months, a small NEMO domain in the Amundsen Sea (smaller than the MISOMIP2 domain) at medium resolution, in Z coordinates, with all required variables [provided by Nico Jourdain].

MITGCM_test : 2 months, a small MITGCM domain in the Amundsen Sea (smaller than the MISOMIP2 domain) at relatively high resolution in stereographic coordinates; vertical Z coordinates; does not contain the required sea-ice or surface fluxes [provided by Jan De Rydt].

eORCA025_test : 2 months, a global NEMO domain at medium resolution, in Zstar coordinates; most variables calculated [provided by Pierre Mathiot].

ROMS_test : 3 months, a circum-Antarctic simulation at medium resolution, in sigma coordinates; does not contain sea-ice or surface fluxes [provided by Ole Richter].

We do not provide more information on the individual model configurations as the aim is here only to test interpolation scripts.