This option is used to supply monthly mean Hellerman and Rosenstein windstress and monthly mean Levitus (1982) sea surface temperature and salinity for use with option restorst. Data is prepared for the resolution specified in module grids as described in Section 3.2. It is interpolated to the time step level in mom as described in Section 19.2. If option restorst is enabled, surface temperature and salinity are damped back to this monthly mean data as given by Equation (28.23) in Section 28.2.9.