nrungcm
nrungcm=0 Use soil data from initial condition file
nrungcm=-1 Use preset values for default soil initial conditions. Typically used when initial condition file contains no soil data (e.g., reanalyses).
nrungcm=-4 Read soil data from surf_00 file (e.g., CCAM history file). Typically used for NWP applications to use soil data spun-up from a previous forecast.