- switch the advection scheme used for salinity to prather scheme so that   SOM-advection on CS-grid will be tested. (keep same Adv.Sc. for theta); - use a shorter time step (45 mn instead of 1.h) to keep the CFL below 1.
- switch the advection scheme used for salinity to prather scheme so that
  SOM-advection on CS-grid will be tested. (keep same Adv.Sc. for theta);
- use a shorter time step (45 mn instead of 1.h) to keep the CFL below 1.

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