Working on scripts for searise-greenland given new scheme using Tulaczyk relation to determine Ntil from Wtil.  To consider: (i) bigger tillphi, (ii) bigger decay rate in -hydrology null, (iii) scale N0 with Po.  Probably the last is the key.
Removing unused options.  Increase hydrology_tillwat_decay_rate_null from 1 mm/a to 1 cm/a; further increase to 5 cm/a worth considering.