module layout_grid_tracers
      use machine, only : kind_evod
      implicit none
      save
!
      integer xhalo
      integer yhalo
!
      real(kind=kind_evod) ,allocatable :: rgt_h(:,:,:,:)
!
      real(kind=kind_evod) ,allocatable :: rgt_a(:,:,:,:)
!
      end module layout_grid_tracers