JMMP-Group/CO_AMM7: CO_AMM7_v9_alpha

CO_AMM7 configuration (v9 pre-release) for testing various vertical coordinate options. This code supports the manuscript submitted to Ocean Modelling: The effect of vertical coordinates on the accuracy of a shelf sea model, in which a hierarchy of experiments are undertaken, including: unforced simulations, multi-year climatological simulations with comparisons against tracer profile observations, and tide-only simulations. Nine different vertical coordinate configurations are investigated spanning: Vanishing Quasi-Sigma (VQS), partial step z-level, s-z hybrid and Multi- Envelope (MEs) approaches. These experiments are part of the ongoing CO_AMM7 v9 regional model development