An equatorial multi-column mode

[nichollsh]

All the modelling in PROTEUS is done under the assumption that the planet can be globally-averaged into a single 1D column. However, we could extend this by simulating multiple columns around the planet's equator, with a description of heat transport between them. This has been done before with models of exoplanet atmospheres, but never for a magma ocean model.

This would allow us to capture day-night differences on tidally locked planets, including the potential for nightside clouds, and also could allow comparison with phase curve observations.