MODULE t3dbc_mod ! !svn $Id: t3dbc_im.F 294 2009-01-09 21:37:26Z arango $ !======================================================================= ! Copyright (c) 2002-2009 The ROMS/TOMS Group ! ! Licensed under a MIT/X style license ! ! See License_ROMS.txt Hernan G. Arango ! !========================================== Alexander F. Shchepetkin === ! ! ! This subroutine sets lateral boundary conditions for the ITRC-th ! ! tracer field. ! ! ! !======================================================================= ! implicit none PRIVATE PUBLIC :: t3dbc_tile CONTAINS ! !*********************************************************************** SUBROUTINE t3dbc (ng, tile, nout, itrc) !*********************************************************************** ! USE mod_param USE mod_ocean USE mod_stepping ! ! Imported variable declarations. ! integer, intent(in) :: ng, tile, nout, itrc ! ! Local variable declarations. ! integer :: IminS, ImaxS, JminS, JmaxS integer :: LBi, UBi, LBj, UBj, LBij, UBij ! ! Set horizontal starting and ending indices for automatic private storage ! arrays. ! IminS=BOUNDS(ng)%Istr(tile)-3 ImaxS=BOUNDS(ng)%Iend(tile)+3 JminS=BOUNDS(ng)%Jstr(tile)-3 JmaxS=BOUNDS(ng)%Jend(tile)+3 ! ! Determine array lower and upper bounds in the I- and J-directions. ! LBi=BOUNDS(ng)%LBi(tile) UBi=BOUNDS(ng)%UBi(tile) LBj=BOUNDS(ng)%LBj(tile) UBj=BOUNDS(ng)%UBj(tile) ! ! Set array lower and upper bounds for MIN(I,J)- and MAX(I,J)-directions. ! LBij=BOUNDS(ng)%LBij UBij=BOUNDS(ng)%UBij ! CALL t3dbc_tile (ng, tile, itrc, & & LBi, UBi, LBj, UBj, N(ng), NT(ng), & & IminS, ImaxS, JminS, JmaxS, & & nstp(ng), nout, & & OCEAN(ng)% t) RETURN END SUBROUTINE t3dbc ! !*********************************************************************** SUBROUTINE t3dbc_tile (ng, tile, itrc, & & LBi, UBi, LBj, UBj, UBk, UBt, & & IminS, ImaxS, JminS, JmaxS, & & nstp, nout, & & t) !*********************************************************************** ! USE mod_param USE mod_boundary USE mod_grid USE mod_scalars ! ! Imported variable declarations. ! integer, intent(in) :: ng, tile, itrc integer, intent(in) :: LBi, UBi, LBj, UBj, UBk, UBt integer, intent(in) :: IminS, ImaxS, JminS, JmaxS integer, intent(in) :: nstp, nout ! real(r8), intent(inout) :: t(LBi:,LBj:,:,:,:) ! ! Local variable declarations. ! integer :: i, j, k real(r8), parameter :: eps =1.0E-20_r8 real(r8) :: Ce, Cx, cff, dTde, dTdt, dTdx, tau real(r8), dimension(IminS:ImaxS,JminS:JmaxS) :: grad ! !----------------------------------------------------------------------- ! Set lower and upper tile bounds and staggered variables bounds for ! this horizontal domain partition. Notice that if tile=-1, it will ! set the values for the global grid. !----------------------------------------------------------------------- ! integer :: Istr, IstrR, IstrT, IstrU, Iend, IendR, IendT integer :: Jstr, JstrR, JstrT, JstrV, Jend, JendR, JendT ! Istr =BOUNDS(ng)%Istr (tile) IstrR=BOUNDS(ng)%IstrR(tile) IstrT=BOUNDS(ng)%IstrT(tile) IstrU=BOUNDS(ng)%IstrU(tile) Iend =BOUNDS(ng)%Iend (tile) IendR=BOUNDS(ng)%IendR(tile) IendT=BOUNDS(ng)%IendT(tile) Jstr =BOUNDS(ng)%Jstr (tile) JstrR=BOUNDS(ng)%JstrR(tile) JstrT=BOUNDS(ng)%JstrT(tile) JstrV=BOUNDS(ng)%JstrV(tile) Jend =BOUNDS(ng)%Jend (tile) JendR=BOUNDS(ng)%JendR(tile) JendT=BOUNDS(ng)%JendT(tile) ! !----------------------------------------------------------------------- ! Lateral boundary conditions at the western edge. !----------------------------------------------------------------------- ! IF (Istr.eq.1) THEN ! ! Western edge, gradient boundary condition. ! DO k=1,N(ng) DO j=Jstr,Jend t(Istr-1,j,k,nout,itrc)=t(Istr,j,k,nout,itrc) t(Istr-1,j,k,nout,itrc)=t(Istr-1,j,k,nout,itrc)* & & GRID(ng)%rmask(Istr-1,j) END DO END DO END IF ! !----------------------------------------------------------------------- ! Lateral boundary conditions at the eastern edge. !----------------------------------------------------------------------- ! IF (Iend.eq.Lm(ng)) THEN ! ! Eastern edge, gradient boundary condition. ! DO k=1,N(ng) DO j=Jstr,Jend t(Iend+1,j,k,nout,itrc)=t(Iend,j,k,nout,itrc) t(Iend+1,j,k,nout,itrc)=t(Iend+1,j,k,nout,itrc)* & & GRID(ng)%rmask(Iend+1,j) END DO END DO END IF ! !----------------------------------------------------------------------- ! Lateral boundary conditions at the southern edge. !----------------------------------------------------------------------- ! IF (Jstr.eq.1) THEN ! ! Southern edge, gradient boundary condition. ! DO k=1,N(ng) DO i=Istr,Iend t(i,Jstr-1,k,nout,itrc)=t(i,Jstr,k,nout,itrc) t(i,Jstr-1,k,nout,itrc)=t(i,Jstr-1,k,nout,itrc)* & & GRID(ng)%rmask(i,Jstr-1) END DO END DO END IF ! !----------------------------------------------------------------------- ! Lateral boundary conditions at the northern edge. !----------------------------------------------------------------------- ! IF (Jend.eq.Mm(ng)) THEN ! ! Northern edge, closed boundary condition. ! DO k=1,N(ng) DO i=Istr,Iend t(i,Jend+1,k,nout,itrc)=t(i,Jend,k,nout,itrc) t(i,Jend+1,k,nout,itrc)=t(i,Jend+1,k,nout,itrc)* & & GRID(ng)%rmask(i,Jend+1) END DO END DO END IF ! !----------------------------------------------------------------------- ! Boundary corners. !----------------------------------------------------------------------- ! IF ((Jstr.eq.1).and.(Istr.eq.1)) THEN DO k=1,N(ng) t(Istr-1,Jstr-1,k,nout,itrc)=0.5_r8* & & (t(Istr ,Jstr-1,k,nout,itrc)+ & & t(Istr-1,Jstr ,k,nout,itrc)) END DO END IF IF ((Jstr.eq.1).and.(Iend.eq.Lm(ng))) THEN DO k=1,N(ng) t(Iend+1,Jstr-1,k,nout,itrc)=0.5_r8* & & (t(Iend ,Jstr-1,k,nout,itrc)+ & & t(Iend+1,Jstr ,k,nout,itrc)) END DO END IF IF ((Jend.eq.Mm(ng)).and.(Istr.eq.1)) THEN DO k=1,N(ng) t(Istr-1,Jend+1,k,nout,itrc)=0.5_r8* & & (t(Istr-1,Jend ,k,nout,itrc)+ & & t(Istr ,Jend+1,k,nout,itrc)) END DO END IF IF ((Jend.eq.Mm(ng)).and.(Iend.eq.Lm(ng))) THEN DO k=1,N(ng) t(Iend+1,Jend+1,k,nout,itrc)=0.5_r8* & & (t(Iend+1,Jend ,k,nout,itrc)+ & & t(Iend ,Jend+1,k,nout,itrc)) END DO END IF RETURN END SUBROUTINE t3dbc_tile END MODULE t3dbc_mod