In prep_ocn, the merges to ocean are currently active only if i2a exists. This does not work for the DATM because there is no i2a active. In addition, the prep_ocn merges are for a->o and i->o and so the correct conditional should be that a->o and i->o are active.
In prep_ocn, the merges to ocean are currently active only if i2a exists. This does not work for the DATM because there is no i2a active. In addition, the prep_ocn merges are for a->o and i->o and so the correct conditional should be that a->o and i->o are active.