O topoHloc,
CALL WRITE_FLD_XY_RS( 'topo_H',' ',topoHloc,0,myThid)
COMMON / LOCAL_INI_PHISURF / topoHloc
_RS topoHloc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)