coord_sigma::sigma_cs integer integer coord_sigma::sigma_cs::nk nk Number of levels. real real coord_sigma::sigma_cs::min_thickness min_thickness Minimum thickness allowed for layers. real, dimension(:), allocatable real, dimension(:), allocatable coord_sigma::sigma_cs::coordinateresolution coordinateresolution Target coordinate resolution, nondimensional. Control structure containing required parameters for the sigma coordinate. real coord_sigma::sigma_cs coordinateresolution min_thickness nk integer coord_sigma::sigma_cscoordinateresolution coord_sigma::sigma_csmin_thickness coord_sigma::sigma_csnk