Changeset 13026 for NEMO/branches/2020/dev_r12973_AGRIF_CMEMS/src/NST/agrif_user.F90

Timestamp:

2020-06-03T16:30:02+02:00 (4 years ago)

Author:

rblod

Message:

AGRIF with northfold and perio, see ticket #2129

File:

• NEMO/branches/2020/dev_r12973_AGRIF_CMEMS/src/NST/agrif_user.F90 (modified) (31 diffs)

NEMO/branches/2020/dev_r12973_AGRIF_CMEMS/src/NST/agrif_user.F90

@@ -28 +28 @@
       !
       !                    !* Agrif initialization
-      CALL agrif_nemo_init
-      CALL Agrif_InitValues_cont_dom
       CALL Agrif_InitValues_cont
 # if defined key_top
@@ -40 +38 @@
    END SUBROUTINE Agrif_initvalues
 
-   SUBROUTINE Agrif_InitValues_cont_dom
-      !!----------------------------------------------------------------------
-      !!                 *** ROUTINE Agrif_InitValues_cont_dom ***
-      !!----------------------------------------------------------------------
-      !
-      CALL agrif_declare_var_dom
-      !
-   END SUBROUTINE Agrif_InitValues_cont_dom
-
-   SUBROUTINE agrif_declare_var_dom
-      !!----------------------------------------------------------------------
-      !!                 *** ROUTINE agrif_declare_var_dom ***
-      !!----------------------------------------------------------------------
-      USE par_oce, ONLY:  nbghostcells      
+   SUBROUTINE agrif_istate( Kbb, Kmm, Kaa )
+
+       USE domvvl
+       USE domain
+       USE par_oce
+       USE agrif_oce
+       USE agrif_oce_interp
+       USE oce
+       USE lib_mpp
+       USe lbclnk
+
+      INTEGER, INTENT(in)  :: Kbb, Kmm, Kaa
+      INTEGER :: jn
+
+      l_ini_child = .TRUE.
+      Agrif_SpecialValue    = 0._wp
+      Agrif_UseSpecialValue = .TRUE.
+      uu(:,:,:,:) = 0.  ;  vv(:,:,:,:) = 0.   ;  ts(:,:,:,:,:) = 0.
+       
+      Krhs_a = Kbb ; Kmm_a = Kbb
+
+      ! Brutal fix to pas 1x1 refinment. 
+  !    IF(Agrif_Irhox() == 1) THEN
+         CALL Agrif_Init_Variable(tsini_id, procname=agrif_initts)
+  !    ELSE
+   !      CALL Agrif_Init_Variable(tsini_id, procname=interptsn)
+
+  !    ENDIF
+      Agrif_UseSpecialValue = ln_spc_dyn
+      use_sign_north = .TRUE.
+      sign_north = -1.
+  !    CALL Agrif_Init_Variable(uini_id , procname=interpun )
+  !    CALL Agrif_Init_Variable(vini_id , procname=interpvn )
+       use_sign_north = .FALSE.
+
+      Agrif_UseSpecialValue = .FALSE.            !
+      l_ini_child = .FALSE.
+      Krhs_a = Kaa ; Kmm_a = Kmm
+
+      DO jn = 1, jpts
+         ts(:,:,:,jn,Kbb) = ts(:,:,:,jn,Kbb)*tmask(:,:,:)
+      END DO
+      uu(:,:,:,Kbb) =  uu(:,:,:,Kbb) * umask(:,:,:)     
+      vv(:,:,:,Kbb) =  vv(:,:,:,Kbb) * vmask(:,:,:) 
+
+
+      CALL lbc_lnk_multi( 'agrif_istate', uu(:,:,:,Kbb), 'U', -1. , vv(:,:,:,Kbb), 'V', -1. )
+      CALL lbc_lnk( 'agrif_istate', ts(:,:,:,:,Kbb), 'T', 1. )
+
+   END SUBROUTINE agrif_istate   
+
+   SUBROUTINE agrif_declare_var_ini
+      !!----------------------------------------------------------------------
+      !!                 *** ROUTINE agrif_declare_var ***
+      !!----------------------------------------------------------------------
+      USE agrif_util
+      USE agrif_oce
+      USE par_oce
+      USE zdf_oce 
+      USE oce
+      USE dom_oce
       !
       IMPLICIT NONE
       !
       INTEGER :: ind1, ind2, ind3
-      !!----------------------------------------------------------------------
+      External :: nemo_mapping
+      !!----------------------------------------------------------------------
+
+! In case of East-West periodicity, prevent AGRIF interpolation at east and west boundaries
+! The procnames will not be called at these boundaries
+      IF (jperio == 1) THEN
+         CALL Agrif_Set_NearCommonBorderX(.TRUE.)
+         CALL Agrif_Set_DistantCommonBorderX(.TRUE.)
+      ENDIF
+
+      IF ( .NOT. ln_bry_south) THEN
+         CALL Agrif_Set_NearCommonBorderY(.TRUE.)
+      ENDIF
 
       ! 1. Declaration of the type of variable which have to be interpolated
       !---------------------------------------------------------------------
       ind1 =     nbghostcells
-      ind2 = 1 + nbghostcells
-      ind3 = 2 + nbghostcells
-      CALL agrif_declare_variable((/1,2/),(/ind2,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),e1u_id)
-      CALL agrif_declare_variable((/2,1/),(/ind3,ind2/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),e2v_id)
-
+      ind2 = 2 + nbghostcells_x
+      ind3 = 2 + nbghostcells_y_s
+
+      CALL agrif_declare_variable((/2,2,0/),(/ind3,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpk/),e3t_id)
+      CALL agrif_declare_variable((/2,2/),(/ind3,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),mbkt_id)
+      CALL agrif_declare_variable((/2,2/),(/ind3,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),ht0_id)
+
+      CALL agrif_declare_variable((/1,2/),(/ind2-1,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),e1u_id)
+      CALL agrif_declare_variable((/2,1/),(/ind2,ind3-1/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),e2v_id)
+
+   
+      ! Initial or restart velues
+      CALL Agrif_Set_MaskMaxSearch(25)
+      !
+      CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jpts+1/),tsini_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/)     ,uini_id ) 
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/)     ,vini_id )
+      CALL agrif_declare_variable((/2,2/),(/ind3,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),sshini_id)
+      ! 
+      CALL Agrif_Set_MaskMaxSearch(5)
+     
       ! 2. Type of interpolation
       !-------------------------
+      CALL Agrif_Set_bcinterp(e3t_id,interp=AGRIF_constant)
+
+      CALL Agrif_Set_bcinterp(mbkt_id,interp=AGRIF_constant)
+      CALL Agrif_Set_interp  (mbkt_id,interp=AGRIF_constant)
+      CALL Agrif_Set_bcinterp(ht0_id ,interp=AGRIF_constant)
+      CALL Agrif_Set_interp  (ht0_id ,interp=AGRIF_constant)
+
       CALL Agrif_Set_bcinterp( e1u_id, interp1=Agrif_linear, interp2=AGRIF_ppm    )
       CALL Agrif_Set_bcinterp( e2v_id, interp1=AGRIF_ppm   , interp2=Agrif_linear )
 
-      ! 3. Location of interpolation
+      ! Initial fields
+      CALL Agrif_Set_bcinterp(tsini_id ,interp=AGRIF_linear)
+      CALL Agrif_Set_interp  (tsini_id ,interp=AGRIF_linear)
+      CALL Agrif_Set_bcinterp(uini_id  ,interp=AGRIF_linear)
+      CALL Agrif_Set_interp  (uini_id  ,interp=AGRIF_linear)
+      CALL Agrif_Set_bcinterp(vini_id  ,interp=AGRIF_linear)
+      CALL Agrif_Set_interp  (vini_id  ,interp=AGRIF_linear)
+      CALL Agrif_Set_bcinterp(sshini_id,interp=AGRIF_linear)
+      CALL Agrif_Set_interp  (sshini_id,interp=AGRIF_linear)
+
+       ! 3. Location of interpolation
       !-----------------------------
+!      CALL Agrif_Set_bc(  e3t_id, (/-nn_sponge_len*Agrif_irhox(),ind1-1/) )  
+! JC: check near the boundary only until matching in sponge has been sorted out:
+      CALL Agrif_Set_bc(  e3t_id, (/0,ind1-1/) )  
+
+      ! extend the interpolation zone by 1 more point than necessary:
+      ! RB check here
+      CALL Agrif_Set_bc(  mbkt_id, (/-nn_sponge_len*Agrif_irhox()-2,ind1/) )
+      CALL Agrif_Set_bc(  ht0_id,  (/-nn_sponge_len*Agrif_irhox()-2,ind1/) )
+      
       CALL Agrif_Set_bc(e1u_id,(/0,ind1-1/))
-      CALL Agrif_Set_bc(e2v_id,(/0,ind1-1/))
+      CALL Agrif_Set_bc(e2v_id,(/0,ind1-1/))  
+
+      CALL Agrif_Set_bc( tsini_id , (/0,ind1-1/) ) ! if west,  rhox=3 and nbghost=3: columns 2 to 4
+      CALL Agrif_Set_bc( uini_id  , (/0,ind1-1/) ) 
+      CALL Agrif_Set_bc( vini_id  , (/0,ind1-1/) )
+      CALL Agrif_Set_bc( sshini_id, (/0,ind1-1/) )
 
       ! 4. Update type
@@ -87 +191 @@
       CALL Agrif_Set_Updatetype(e2v_id,update1 = Agrif_Update_Average, update2=Agrif_Update_Copy)
 #endif
-
-   END SUBROUTINE agrif_declare_var_dom
-
-   SUBROUTINE Agrif_InitValues_cont
-      !!----------------------------------------------------------------------
-      !!                 *** ROUTINE Agrif_InitValues_cont ***
-      !!----------------------------------------------------------------------
-      USE agrif_oce
+      
+      CALL Agrif_Set_ExternalMapping(nemo_mapping)
+      !
+   END SUBROUTINE agrif_declare_var_ini
+
+
+   SUBROUTINE Agrif_Init_Domain( Kbb, Kmm, Kaa ) 
+      !!----------------------------------------------------------------------
+      !!                 *** ROUTINE Agrif_InitValues_cont_dom ***
+      !!----------------------------------------------------------------------
+  
+         !!----------------------------------------------------------------------
+         !!                 *** ROUTINE Agrif_InitValues_cont ***
+         !!
+         !! ** Purpose ::   Declaration of variables to be interpolated
+         !!----------------------------------------------------------------------
+      USE agrif_oce_update
       USE agrif_oce_interp
       USE agrif_oce_sponge
+      USE Agrif_Util
+      USE oce 
       USE dom_oce
-      USE oce
+      USE zdf_oce
+      USE nemogcm
+      USE agrif_oce
+      !
+      USE lbclnk
       USE lib_mpp
-      USE lbclnk
+      USE in_out_manager
       !
       IMPLICIT NONE
       !
-      INTEGER :: ji, jj
+      INTEGER, INTENT(in) ::  Kbb, Kmm, Kaa
+      !
       LOGICAL :: check_namelist
       CHARACTER(len=15) :: cl_check1, cl_check2, cl_check3, cl_check4 
-#if defined key_vertical
       REAL(wp), DIMENSION(jpi,jpj) ::   zk   ! workspace
-#endif
-      !!----------------------------------------------------------------------
-
-      ! 1. Declaration of the type of variable which have to be interpolated
-      !---------------------------------------------------------------------
-      CALL agrif_declare_var
-
-      ! 2. First interpolations of potentially non zero fields
-      !-------------------------------------------------------
-
-#if defined key_vertical
+      INTEGER :: ji, jj, jk, iminspon
+      !!----------------------------------------------------------------------
+    
+     ! CALL Agrif_Declare_Var_ini
+
+      IF( agrif_oce_alloc()  > 0 )   CALL ctl_warn('agrif agrif_oce_alloc: allocation of arrays failed')
+
+    !  lk_west  = ( ((nbondi == -1) .OR. (nbondi == 2) ).AND. .NOT. (jperio == 1 .OR. jperio == 4 .OR. jperio == 6))
+    !  lk_east  = ( ((nbondi ==  1) .OR. (nbondi == 2) ).AND. .NOT. (jperio == 1 .OR. jperio == 4 .OR. jperio == 6))
+    !  lk_south = ( ((nbondj == -1) .OR. (nbondj == 2) ).AND. ln_bry_south)
+    !  lk_north = ( ((nbondj ==  1) .OR. (nbondj == 2) ))
+    
+      lk_west  = ( .NOT. (jperio == 1 .OR. jperio == 4 .OR. jperio == 6) )
+      lk_east  = ( .NOT. (jperio == 1 .OR. jperio == 4 .OR. jperio == 6) )
+      lk_south = ln_bry_south
+      lk_north = .true.
+
+      ! Check sponge length:
+      iminspon = MIN(FLOOR(REAL(jpiglo-4)/REAL(2*Agrif_irhox())), FLOOR(REAL(jpjglo-4)/REAL(2*Agrif_irhox())) )
+      IF (lk_mpp) iminspon = MIN(iminspon,FLOOR(REAL(jpi-2)/REAL(Agrif_irhox())), FLOOR(REAL(jpj-2)/REAL(Agrif_irhox())) )
+      IF (nn_sponge_len > iminspon)  CALL ctl_stop('agrif sponge length is too large') 
+      
       ! Build consistent parent bathymetry and number of levels
       ! on the child grid 
@@ -126 +256 @@
       mbkt_parent(:,:) = 0
       !
-      CALL Agrif_Bc_variable(ht0_id ,calledweight=1.,procname=interpht0 )
-      CALL Agrif_Bc_variable(mbkt_id,calledweight=1.,procname=interpmbkt)
+  !    CALL Agrif_Bc_variable(ht0_id ,calledweight=1.,procname=interpht0 )
+  !    CALL Agrif_Bc_variable(mbkt_id,calledweight=1.,procname=interpmbkt)
+      CALL Agrif_Init_Variable(ht0_id , procname=interpht0 )
+      CALL Agrif_Init_Variable(mbkt_id, procname=interpmbkt)
       !
       ! Assume step wise change of bathymetry near interface
@@ -149 +281 @@
       ENDIF
       !
-      CALL lbc_lnk( 'Agrif_InitValues_cont', hu0_parent, 'U', 1. )
-      CALL lbc_lnk( 'Agrif_InitValues_cont', hv0_parent, 'V', 1. )
+      CALL lbc_lnk( 'Agrif_Init_Domain', hu0_parent, 'U', 1. )
+      CALL lbc_lnk( 'Agrif_Init_Domain', hv0_parent, 'V', 1. )
       zk(:,:) = REAL( mbku_parent(:,:), wp )   ;   CALL lbc_lnk( 'Agrif_InitValues_cont', zk, 'U', 1. )
-      mbku_parent(:,:) = MAX( NINT( zk(:,:) ), 1 )
+      mbku_parent(:,:) = MAX( NINT( zk(:,:) ), 1 ) ;
       zk(:,:) = REAL( mbkv_parent(:,:), wp )   ;   CALL lbc_lnk( 'Agrif_InitValues_cont', zk, 'V', 1. )
       mbkv_parent(:,:) = MAX( NINT( zk(:,:) ), 1 )   
-#endif
-
+
+
+      CALL Agrif_Init_Variable(sshini_id, procname=agrif_initssh)
+      CALL lbc_lnk( 'Agrif_Init_Domain', ssh(:,:,Kbb), 'T', 1. )
+      DO jk = 1, jpk
+            e3t(:,:,jk,Kbb) =  e3t_0(:,:,jk) * ( ht_0(:,:) + ssh(:,:,Kbb)  ) &
+      &                            / ( ht_0(:,:) + 1._wp - ssmask(:,:) ) * tmask(:,:,jk)   &
+                     &              + e3t_0(:,:,jk) * ( 1._wp - tmask(:,:,jk) )
+      END DO
+
+      ! check if masks and bathymetries match
+      IF(ln_chk_bathy) THEN
+         Agrif_UseSpecialValue = .FALSE.
+         !
+         IF(lwp) WRITE(numout,*) ' '
+         IF(lwp) WRITE(numout,*) 'AGRIF: Check Bathymetry and masks near bdys. Level: ', Agrif_Level()
+         !
+         kindic_agr = 0
+         IF( .NOT. l_vremap ) THEN
+            !
+            ! check if tmask and vertical scale factors agree with parent in sponge area:
+            CALL Agrif_Bc_variable(e3t_id,calledweight=1.,procname=interpe3t)
+            !
+         ELSE
+            !
+            ! In case of vertical interpolation, check only that total depths agree between child and parent:
+            DO ji = 1, jpi
+               DO jj = 1, jpj
+                  IF ((mbkt_parent(ji,jj)/=0).AND.(ABS(ht0_parent(ji,jj)-ht_0(ji,jj))>1.e-3)) kindic_agr = kindic_agr + 1
+                  IF ((mbku_parent(ji,jj)/=0).AND.(ABS(hu0_parent(ji,jj)-hu_0(ji,jj))>1.e-3)) kindic_agr = kindic_agr + 1
+                  IF ((mbkv_parent(ji,jj)/=0).AND.(ABS(hv0_parent(ji,jj)-hv_0(ji,jj))>1.e-3)) kindic_agr = kindic_agr + 1
+               END DO
+            END DO
+
+            CALL mpp_sum( 'agrif_user', kindic_agr )
+            IF( kindic_agr /= 0 ) THEN
+               CALL ctl_stop('==> Child Bathymetry is NOT correct near boundaries.')
+            ELSE
+               IF(lwp) WRITE(numout,*) '==> Child Bathymetry is ok near boundaries.'
+               IF(lwp) WRITE(numout,*) ' '
+            ENDIF  
+         ENDIF
+      ENDIF
+
+      IF( l_vremap ) THEN
+      ! Additional constrain that should be removed someday:
+         IF ( Agrif_Parent(jpk).GT.jpk ) THEN
+            CALL ctl_stop( ' With l_vremap, child grids must have jpk greater or equal to the parent value' )
+         ENDIF
+      ENDIF
+      !
+   END SUBROUTINE Agrif_Init_Domain
+
+
+   SUBROUTINE Agrif_InitValues_cont
+         !!----------------------------------------------------------------------
+         !!                 *** ROUTINE Agrif_InitValues_cont ***
+         !!
+         !! ** Purpose ::   Declaration of variables to be interpolated
+         !!----------------------------------------------------------------------
+      USE agrif_oce_update
+      USE agrif_oce_interp
+      USE agrif_oce_sponge
+      USE Agrif_Util
+      USE oce 
+      USE dom_oce
+      USE zdf_oce
+      USE nemogcm
+      USE agrif_oce
+      !
+      USE lbclnk
+      USE lib_mpp
+      USE in_out_manager
+      !
+      IMPLICIT NONE
+      !
+      LOGICAL :: check_namelist
+      CHARACTER(len=15) :: cl_check1, cl_check2, cl_check3, cl_check4 
+      REAL(wp), DIMENSION(jpi,jpj) ::   zk   ! workspace
+      INTEGER :: ji, jj
+
+      ! 1. Declaration of the type of variable which have to be interpolated
+      !---------------------------------------------------------------------
+      CALL agrif_declare_var
+
+      ! 2. First interpolations of potentially non zero fields
+      !-------------------------------------------------------
       Agrif_SpecialValue    = 0._wp
       Agrif_UseSpecialValue = .TRUE.
@@ -163 +380 @@
       tabspongedone_tsn = .FALSE.
       CALL Agrif_Bc_variable(tsn_sponge_id,calledweight=1.,procname=interptsn_sponge)
-      ! reset ts(:,:,:,:,Krhs_a) to zero
+      ! reset tsa to zero
       ts(:,:,:,:,Krhs_a) = 0._wp
 
       Agrif_UseSpecialValue = ln_spc_dyn
+      use_sign_north = .TRUE.
+      sign_north = -1.
       CALL Agrif_Bc_variable(un_interp_id,calledweight=1.,procname=interpun)
       CALL Agrif_Bc_variable(vn_interp_id,calledweight=1.,procname=interpvn)
@@ -175 +394 @@
       tabspongedone_v = .FALSE.
       CALL Agrif_Bc_variable(vn_sponge_id,calledweight=1.,procname=interpvn_sponge)
+      use_sign_north = .FALSE.
       uu(:,:,:,Krhs_a) = 0._wp
       vv(:,:,:,Krhs_a) = 0._wp
@@ -185 +405 @@
       IF ( ln_dynspg_ts ) THEN
          Agrif_UseSpecialValue = ln_spc_dyn
+         use_sign_north = .TRUE.
+         sign_north = -1.
          CALL Agrif_Bc_variable(unb_id,calledweight=1.,procname=interpunb)
          CALL Agrif_Bc_variable(vnb_id,calledweight=1.,procname=interpvnb)
          CALL Agrif_Bc_variable(ub2b_interp_id,calledweight=1.,procname=interpub2b)
          CALL Agrif_Bc_variable(vb2b_interp_id,calledweight=1.,procname=interpvb2b)
+         use_sign_north = .FALSE.
          ubdy(:,:) = 0._wp
          vbdy(:,:) = 0._wp
       ENDIF
-
-      Agrif_UseSpecialValue = .FALSE.
-
-      ! 3. Some controls
+      Agrif_UseSpecialValue = .FALSE. 
+
       !-----------------
       check_namelist = .TRUE.
 
       IF( check_namelist ) THEN 
-
-         ! Check time steps           
-         IF( NINT(Agrif_Rhot()) * NINT(rn_Dt) .NE. Agrif_Parent(rn_Dt) ) THEN
-            WRITE(cl_check1,*)  NINT(Agrif_Parent(rn_Dt))
-            WRITE(cl_check2,*)  NINT(rn_Dt)
-            WRITE(cl_check3,*)  NINT(Agrif_Parent(rn_Dt)/Agrif_Rhot())
-            CALL ctl_stop( 'Incompatible time step between ocean grids',   &
-                  &               'parent grid value : '//cl_check1    ,   & 
-                  &               'child  grid value : '//cl_check2    ,   & 
-                  &               'value on child grid should be changed to : '//cl_check3 )
-         ENDIF
-
-         ! Check run length
-         IF( Agrif_IRhot() * (Agrif_Parent(nitend)- &
-               Agrif_Parent(nit000)+1) .NE. (nitend-nit000+1) ) THEN
-            WRITE(cl_check1,*)  (Agrif_Parent(nit000)-1)*Agrif_IRhot() + 1
-            WRITE(cl_check2,*)   Agrif_Parent(nitend)   *Agrif_IRhot()
-            CALL ctl_warn( 'Incompatible run length between grids'                      ,   &
-                  &               'nit000 on fine grid will be changed to : '//cl_check1,   &
-                  &               'nitend on fine grid will be changed to : '//cl_check2    )
-            nit000 = (Agrif_Parent(nit000)-1)*Agrif_IRhot() + 1
-            nitend =  Agrif_Parent(nitend)   *Agrif_IRhot()
-         ENDIF
-
          ! Check free surface scheme
          IF ( ( Agrif_Parent(ln_dynspg_ts ).AND.ln_dynspg_exp ).OR.&
@@ -251 +448 @@
             STOP
          ENDIF
-
-      ENDIF
-
-      ! check if masks and bathymetries match
-      IF(ln_chk_bathy) THEN
-         Agrif_UseSpecialValue = .FALSE.
-         !
-         IF(lwp) WRITE(numout,*) ' '
-         IF(lwp) WRITE(numout,*) 'AGRIF: Check Bathymetry and masks near bdys. Level: ', Agrif_Level()
-         !
-         kindic_agr = 0
-# if ! defined key_vertical
-         !
-         ! check if tmask and vertical scale factors agree with parent in sponge area:
-         CALL Agrif_Bc_variable(e3t_id,calledweight=1.,procname=interpe3t)
-         !
-# else
-         !
-         ! In case of vertical interpolation, check only that total depths agree between child and parent:
-         DO ji = 1, jpi
-            DO jj = 1, jpj
-               IF ((mbkt_parent(ji,jj)/=0).AND.(ABS(ht0_parent(ji,jj)-ht_0(ji,jj))>1.e-3)) kindic_agr = kindic_agr + 1
-               IF ((mbku_parent(ji,jj)/=0).AND.(ABS(hu0_parent(ji,jj)-hu_0(ji,jj))>1.e-3)) kindic_agr = kindic_agr + 1
-               IF ((mbkv_parent(ji,jj)/=0).AND.(ABS(hv0_parent(ji,jj)-hv_0(ji,jj))>1.e-3)) kindic_agr = kindic_agr + 1
-            END DO
-         END DO
-# endif
-         CALL mpp_sum( 'agrif_user', kindic_agr )
-         IF( kindic_agr /= 0 ) THEN
-            CALL ctl_stop('==> Child Bathymetry is NOT correct near boundaries.')
-         ELSE
-            IF(lwp) WRITE(numout,*) '==> Child Bathymetry is ok near boundaries.'
-            IF(lwp) WRITE(numout,*) ' '
-         END IF  
-         !    
-      ENDIF
-
-# if defined key_vertical
-      ! Additional constrain that should be removed someday:
-      IF ( Agrif_Parent(jpk).GT.jpk ) THEN
-    CALL ctl_stop( ' With key_vertical, child grids must have jpk greater or equal to the parent value' )
-      ENDIF
-# endif
-      ! 
+      ENDIF
+
    END SUBROUTINE Agrif_InitValues_cont
 
@@ -314 +469 @@
       ! 1. Declaration of the type of variable which have to be interpolated
       !---------------------------------------------------------------------
+
       ind1 =     nbghostcells
-      ind2 = 1 + nbghostcells
-      ind3 = 2 + nbghostcells
+      ind2 = 2 + nbghostcells_x
+      ind3 = 2 + nbghostcells_y_s
+
 # if defined key_vertical
       CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jpts+1/),tsn_id)
       CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jpts+1/),tsn_sponge_id)
 
-      CALL agrif_declare_variable((/1,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),un_interp_id)
-      CALL agrif_declare_variable((/2,1,0,0/),(/ind3,ind2,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),vn_interp_id)
-      CALL agrif_declare_variable((/1,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),un_update_id)
-      CALL agrif_declare_variable((/2,1,0,0/),(/ind3,ind2,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),vn_update_id)
-      CALL agrif_declare_variable((/1,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),un_sponge_id)
-      CALL agrif_declare_variable((/2,1,0,0/),(/ind3,ind2,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),vn_sponge_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),un_interp_id) !
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),vn_interp_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),un_update_id)
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),vn_update_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),un_sponge_id)
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,2/),vn_sponge_id)
 # else
       CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jpts/),tsn_id)
       CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jpts/),tsn_sponge_id)
 
-      CALL agrif_declare_variable((/1,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),un_interp_id)
-      CALL agrif_declare_variable((/2,1,0,0/),(/ind3,ind2,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),vn_interp_id)
-      CALL agrif_declare_variable((/1,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),un_update_id)
-      CALL agrif_declare_variable((/2,1,0,0/),(/ind3,ind2,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),vn_update_id)
-      CALL agrif_declare_variable((/1,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),un_sponge_id)
-      CALL agrif_declare_variable((/2,1,0,0/),(/ind3,ind2,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),vn_sponge_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),un_interp_id)
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),vn_interp_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),un_update_id)
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),vn_update_id)
+      CALL agrif_declare_variable((/1,2,0,0/),(/ind2-1,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),un_sponge_id)
+      CALL agrif_declare_variable((/2,1,0,0/),(/ind2,ind3-1,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,1/),vn_sponge_id)
 # endif
-
-      CALL agrif_declare_variable((/2,2,0/),(/ind3,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpk/),e3t_id)
-
-# if defined key_vertical
-      CALL agrif_declare_variable((/2,2/),(/ind3,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),mbkt_id)
-      CALL agrif_declare_variable((/2,2/),(/ind3,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),ht0_id)
-# endif
-
-      CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,3/),scales_t_id)
 
       CALL agrif_declare_variable((/1,2/),(/ind2,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),unb_id)
@@ -357 +505 @@
       CALL agrif_declare_variable((/2,2/),(/ind3,ind3/),(/'x','y'/),(/1,1/),(/nlci,nlcj/),sshn_id)
 
-      IF( ln_zdftke.OR.ln_zdfgls ) THEN
+
+      IF( ln_zdftke.OR.ln_zdfgls ) THEN  ! logical not known at this point
 !         CALL agrif_declare_variable((/2,2,0/),(/ind3,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpk/), en_id)
 !         CALL agrif_declare_variable((/2,2,0/),(/ind3,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpk/),avt_id)
@@ -366 +515 @@
 # endif
       ENDIF
-
+     
       ! 2. Type of interpolation
       !-------------------------
       CALL Agrif_Set_bcinterp(tsn_id,interp=AGRIF_linear)
-
       CALL Agrif_Set_bcinterp(un_interp_id,interp1=Agrif_linear,interp2=AGRIF_ppm)
       CALL Agrif_Set_bcinterp(vn_interp_id,interp1=AGRIF_ppm,interp2=Agrif_linear)
 
       CALL Agrif_Set_bcinterp(tsn_sponge_id,interp=AGRIF_linear)
+      CALL Agrif_Set_bcinterp(un_sponge_id,interp1=Agrif_linear,interp2=AGRIF_ppm)
+      CALL Agrif_Set_bcinterp(vn_sponge_id,interp1=AGRIF_ppm,interp2=Agrif_linear)
 
       CALL Agrif_Set_bcinterp(sshn_id,interp=AGRIF_linear)
@@ -390 +540 @@
 !<
 
-      CALL Agrif_Set_bcinterp(un_sponge_id,interp1=Agrif_linear,interp2=AGRIF_ppm)
-      CALL Agrif_Set_bcinterp(vn_sponge_id,interp1=AGRIF_ppm,interp2=Agrif_linear)
-
-      CALL Agrif_Set_bcinterp(e3t_id,interp=AGRIF_constant)
-
-# if defined key_vertical
-      CALL Agrif_Set_bcinterp(mbkt_id,interp=AGRIF_constant)
-      CALL Agrif_Set_bcinterp(ht0_id ,interp=AGRIF_constant)
-# endif
-
-      IF( ln_zdftke.OR.ln_zdfgls )   CALL Agrif_Set_bcinterp( avm_id, interp=AGRIF_linear )
-
-      ! 3. Location of interpolation
+      IF( ln_zdftke.OR.ln_zdfgls )  CALL Agrif_Set_bcinterp( avm_id, interp=AGRIF_linear )
+    
+
+       ! 3. Location of interpolation
       !-----------------------------
       CALL Agrif_Set_bc(       tsn_id, (/0,ind1-1/) ) ! if west,  rhox=3 and nbghost=3: columns 2 to 4
@@ -418 +559 @@
       CALL Agrif_Set_bc( vb2b_interp_id, (/0,ind1-1/) )
 
-!      CALL Agrif_Set_bc(  e3t_id, (/-nn_sponge_len*Agrif_irhox(),ind1-1/) )  
-! JC: check near the boundary only until matching in sponge has been sorted out:
-      CALL Agrif_Set_bc(  e3t_id, (/0,ind1-1/) )  
-
-# if defined key_vertical 
-      ! extend the interpolation zone by 1 more point than necessary:
-      CALL Agrif_Set_bc(  mbkt_id, (/-nn_sponge_len*Agrif_irhox()-2,ind1/) )
-      CALL Agrif_Set_bc(  ht0_id,  (/-nn_sponge_len*Agrif_irhox()-2,ind1/) )
-# endif
-
-      IF( ln_zdftke.OR.ln_zdfgls )   CALL Agrif_Set_bc( avm_id, (/0,ind1/) )
+      IF( ln_zdftke.OR.ln_zdfgls ) CALL Agrif_Set_bc( avm_id, (/0,ind1/) )
 
       ! 4. Update type
       !--------------- 
-      CALL Agrif_Set_Updatetype(scales_t_id, update = AGRIF_Update_Average)
 
 # if defined UPD_HIGH
@@ -444 +574 @@
       CALL Agrif_Set_Updatetype(e3t_id, update = Agrif_Update_Full_Weighting)
 
-      IF( ln_zdftke.OR.ln_zdfgls ) THEN
+  !    IF( ln_zdftke.OR.ln_zdfgls ) THEN
 !         CALL Agrif_Set_Updatetype( en_id, update = AGRIF_Update_Full_Weighting)
 !         CALL Agrif_Set_Updatetype(avt_id, update = AGRIF_Update_Full_Weighting)
 !         CALL Agrif_Set_Updatetype(avm_id, update = AGRIF_Update_Full_Weighting)
-      ENDIF
+   !   ENDIF
 
 #else
@@ -460 +590 @@
       CALL Agrif_Set_Updatetype(e3t_id, update = AGRIF_Update_Average)
 
-      IF( ln_zdftke.OR.ln_zdfgls ) THEN
+ !     IF( ln_zdftke.OR.ln_zdfgls ) THEN
 !         CALL Agrif_Set_Updatetype( en_id, update = AGRIF_Update_Average)
 !         CALL Agrif_Set_Updatetype(avt_id, update = AGRIF_Update_Average)
 !         CALL Agrif_Set_Updatetype(avm_id, update = AGRIF_Update_Average)
-      ENDIF
+ !     ENDIF
 
 #endif
@@ -472 +602 @@
 #if defined key_si3
 SUBROUTINE Agrif_InitValues_cont_ice
-      !!----------------------------------------------------------------------
-      !!                 *** ROUTINE Agrif_InitValues_cont_ice ***
-      !!----------------------------------------------------------------------
       USE Agrif_Util
       USE sbc_oce, ONLY : nn_fsbc  ! clem: necessary otherwise Agrif_Parent(nn_fsbc) = nn_fsbc
@@ -482 +609 @@
       USE agrif_ice_interp
       USE lib_mpp
-      !
-      IMPLICIT NONE
-      !!----------------------------------------------------------------------
-      !
-      ! Declaration of the type of variable which have to be interpolated (parent=>child)
-      !----------------------------------------------------------------------------------
-      CALL agrif_declare_var_ice
+      !!----------------------------------------------------------------------
+      !!                 *** ROUTINE Agrif_InitValues_cont_ice ***
+      !!----------------------------------------------------------------------
 
       ! Controls
@@ -495 +618 @@
       !          the run must satisfy CFL=Uice/(dx/dt) < 0.6/nn_fsbc(child)
       !          therefore, if nn_fsbc(child)>1 one must reduce the time-step in proportion to nn_fsbc(child), which is not acceptable
-      !       If a solution is found, the following stop could be removed because the rest of the code take nn_fsbc(child) into account
+      !       If a solution is found, the following stop could be removed because the rest of the code take nn_fsbc(child) into account     
       IF( nn_fsbc > 1 )  CALL ctl_stop('nn_fsbc(child) must be set to 1 otherwise agrif and sea-ice may not work properly')
 
@@ -516 +639 @@
       !!                 *** ROUTINE agrif_declare_var_ice ***
       !!----------------------------------------------------------------------
+
       USE Agrif_Util
       USE ice
-      USE par_oce, ONLY : nbghostcells
+      USE par_oce, ONLY : nbghostcells, nbghostcells_x, nbghostcells_y_s
       !
       IMPLICIT NONE
       !
       INTEGER :: ind1, ind2, ind3
-      !!----------------------------------------------------------------------
+         !!----------------------------------------------------------------------
       !
       ! 1. Declaration of the type of variable which have to be interpolated (parent=>child)
@@ -532 +656 @@
       !                            2,2 = two ghost lines
       !-------------------------------------------------------------------------------------
+
       ind1 =     nbghostcells
-      ind2 = 1 + nbghostcells
-      ind3 = 2 + nbghostcells
-      CALL agrif_declare_variable((/2,2,0/),(/ind3,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpl*(8+nlay_s+nlay_i)/),tra_ice_id)
-      CALL agrif_declare_variable((/1,2/)  ,(/ind2,ind3/)  ,(/'x','y'/)    ,(/1,1/)  ,(/nlci,nlcj/)                      ,u_ice_id  )
-      CALL agrif_declare_variable((/2,1/)  ,(/ind3,ind2/)  ,(/'x','y'/)    ,(/1,1/)  ,(/nlci,nlcj/)                      ,v_ice_id  )
+      ind2 = 2 + nbghostcells_x
+      ind3 = 2 + nbghostcells_y_s
+      CALL agrif_declare_variable((/2,2,0/),(/ind2,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpl*(8+nlay_s+nlay_i)/),tra_ice_id)
+      CALL agrif_declare_variable((/1,2/)  ,(/ind2-1,ind3/)  ,(/'x','y'/)    ,(/1,1/)  ,(/nlci,nlcj/)                      ,u_ice_id  )
+      CALL agrif_declare_variable((/2,1/)  ,(/ind2,ind3-1/)  ,(/'x','y'/)    ,(/1,1/)  ,(/nlci,nlcj/)                      ,v_ice_id  )
+
+      CALL Agrif_Set_MaskMaxSearch(25)
+      CALL agrif_declare_variable((/2,2,0/),(/ind3,ind3,0/),(/'x','y','N'/),(/1,1,1/),(/nlci,nlcj,jpl*(8+nlay_s+nlay_i)/),tra_iceini_id)
+      CALL agrif_declare_variable((/1,2/)  ,(/ind2-1,ind3/)  ,(/'x','y'/)    ,(/1,1/)  ,(/nlci,nlcj/)                      ,u_iceini_id  )
+      CALL agrif_declare_variable((/2,1/)  ,(/ind2,ind3-1/)  ,(/'x','y'/)    ,(/1,1/)  ,(/nlci,nlcj/)                      ,v_iceini_id  )
+      CALL Agrif_Set_MaskMaxSearch(5)
 
       ! 2. Set interpolations (normal & tangent to the grid cell for velocities)
@@ -545 +676 @@
       CALL Agrif_Set_bcinterp(v_ice_id  , interp1 = AGRIF_ppm   ,interp2 = Agrif_linear)
 
+      CALL Agrif_Set_bcinterp(tra_iceini_id, interp  = AGRIF_linear)
+      CALL Agrif_Set_interp  (tra_iceini_id, interp  = AGRIF_linear)
+      CALL Agrif_Set_bcinterp(u_iceini_id  , interp  = AGRIF_linear  )
+      CALL Agrif_Set_interp  (u_iceini_id  , interp  = AGRIF_linear   )
+      CALL Agrif_Set_bcinterp(v_iceini_id  , interp  = AGRIF_linear)
+      CALL Agrif_Set_interp  (v_iceini_id  , interp  = AGRIF_linear)
+
       ! 3. Set location of interpolations
       !----------------------------------
@@ -550 +688 @@
       CALL Agrif_Set_bc(u_ice_id  ,(/0,ind1/))
       CALL Agrif_Set_bc(v_ice_id  ,(/0,ind1/))
+
+      CALL Agrif_Set_bc(tra_iceini_id,(/0,ind1/))
+      CALL Agrif_Set_bc(u_iceini_id  ,(/0,ind1/))
+      CALL Agrif_Set_bc(v_iceini_id  ,(/0,ind1/))
 
       ! 4. Set update type in case 2 ways (child=>parent) (normal & tangent to the grid cell for velocities)
@@ -557 +699 @@
       CALL Agrif_Set_Updatetype(u_ice_id  , update1 = Agrif_Update_Average       , update2 = Agrif_Update_Full_Weighting)
       CALL Agrif_Set_Updatetype(v_ice_id  , update1 = Agrif_Update_Full_Weighting, update2 = Agrif_Update_Average       )
-#else
+# else
       CALL Agrif_Set_Updatetype(tra_ice_id, update  = AGRIF_Update_Average)
       CALL Agrif_Set_Updatetype(u_ice_id  , update1 = Agrif_Update_Copy   , update2 = Agrif_Update_Average)
       CALL Agrif_Set_Updatetype(v_ice_id  , update1 = Agrif_Update_Average, update2 = Agrif_Update_Copy   )
-#endif
+# endif
 
    END SUBROUTINE agrif_declare_var_ice
@@ -585 +727 @@
       USE agrif_top_sponge
       !!
-      IMPLICIT NONE
-      !
-      CHARACTER(len=10) :: cl_check1, cl_check2, cl_check3
-      LOGICAL :: check_namelist
-      !!----------------------------------------------------------------------
-
-      ! 1. Declaration of the type of variable which have to be interpolated
-      !---------------------------------------------------------------------
-      CALL agrif_declare_var_top
-
-      ! 2. First interpolations of potentially non zero fields
-      !-------------------------------------------------------
-      Agrif_SpecialValue=0._wp
-      Agrif_UseSpecialValue = .TRUE.
-      CALL Agrif_Bc_variable(trn_id,calledweight=1.,procname=interptrn)
-      Agrif_UseSpecialValue = .FALSE.
-      CALL Agrif_Sponge
-      tabspongedone_trn = .FALSE.
-      CALL Agrif_Bc_variable(trn_sponge_id,calledweight=1.,procname=interptrn_sponge)
-      ! reset ts(:,:,:,:,Krhs_a) to zero
-      tr(:,:,:,:,Krhs_a) = 0._wp
-
-      ! 3. Some controls
-      !-----------------
-      check_namelist = .TRUE.
-
-      IF( check_namelist ) THEN
-         ! Check time steps
-      IF( NINT(Agrif_Rhot()) * NINT(rn_Dt) .NE. Agrif_Parent(rn_Dt) ) THEN
-         WRITE(cl_check1,*)  Agrif_Parent(rn_Dt)
-         WRITE(cl_check2,*)  rn_Dt
-         WRITE(cl_check3,*)  rn_Dt*Agrif_Rhot()
+  
+   !!
+   IMPLICIT NONE
+   !
+   CHARACTER(len=10) :: cl_check1, cl_check2, cl_check3
+   LOGICAL :: check_namelist
+      !!----------------------------------------------------------------------
+
+
+   ! 1. Declaration of the type of variable which have to be interpolated
+   !---------------------------------------------------------------------
+   CALL agrif_declare_var_top
+
+   ! 2. First interpolations of potentially non zero fields
+   !-------------------------------------------------------
+   Agrif_SpecialValue=0.
+   Agrif_UseSpecialValue = .TRUE.
+   CALL Agrif_Bc_variable(trn_id,calledweight=1.,procname=interptrn)
+   Agrif_UseSpecialValue = .FALSE.
+   CALL Agrif_Sponge
+   tabspongedone_trn = .FALSE.
+   CALL Agrif_Bc_variable(trn_sponge_id,calledweight=1.,procname=interptrn_sponge)
+   ! reset tsa to zero
+   tra(:,:,:,:) = 0.
+
+   ! 3. Some controls
+   !-----------------
+   check_namelist = .TRUE.
+
+   IF( check_namelist ) THEN
+      ! Check time steps
+      IF( NINT(Agrif_Rhot()) * NINT(rdt) .NE. Agrif_Parent(rdt) ) THEN
+         WRITE(cl_check1,*)  Agrif_Parent(rdt)
+         WRITE(cl_check2,*)  rdt
+         WRITE(cl_check3,*)  rdt*Agrif_Rhot()
          CALL ctl_stop( 'incompatible time step between grids',   &
                &               'parent grid value : '//cl_check1    ,   & 
@@ -635 +780 @@
          nitend =  Agrif_Parent(nitend)   *Agrif_IRhot()
       ENDIF
-
    ENDIF
    !
@@ -655 +799 @@
       !!----------------------------------------------------------------------
 
+
+
+!RB_CMEMS : declare here init for top      
       ! 1. Declaration of the type of variable which have to be interpolated
       !---------------------------------------------------------------------
       ind1 =     nbghostcells
-      ind2 = 1 + nbghostcells
-      ind3 = 2 + nbghostcells
+      ind2 = 2 + nbghostcells_x
+      ind3 = 2 + nbghostcells_y_s
 # if defined key_vertical
-      CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra+1/),trn_id)
-      CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra+1/),trn_sponge_id)
+      CALL agrif_declare_variable((/2,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra+1/),trn_id)
+      CALL agrif_declare_variable((/2,2,0,0/),(/ind2,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra+1/),trn_sponge_id)
 # else
-      CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra/),trn_id)
-      CALL agrif_declare_variable((/2,2,0,0/),(/ind3,ind3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra/),trn_sponge_id)
+! LAURENT: STRANGE why (3,3) here ?
+      CALL agrif_declare_variable((/2,2,0,0/),(/3,3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra/),trn_id)
+      CALL agrif_declare_variable((/2,2,0,0/),(/3,3,0,0/),(/'x','y','N','N'/),(/1,1,1,1/),(/nlci,nlcj,jpk,jptra/),trn_sponge_id)
 # endif
 
@@ -705 +853 @@
       !!                     *** ROUTINE agrif_init ***
       !!----------------------------------------------------------------------
-      USE agrif_oce 
-      USE agrif_ice
-      USE in_out_manager
-      USE lib_mpp
+   USE agrif_oce 
+   USE agrif_ice
+   USE dom_oce
+   USE in_out_manager
+   USE lib_mpp
       !!
       IMPLICIT NONE
@@ -714 +863 @@
       INTEGER  ::   ios                 ! Local integer output status for namelist read
       NAMELIST/namagrif/ ln_agrif_2way, rn_sponge_tra, rn_sponge_dyn, rn_trelax_tra, rn_trelax_dyn, &
-                       & ln_spc_dyn, ln_chk_bathy
+                       & ln_spc_dyn, ln_chk_bathy, ln_bry_south
       !!--------------------------------------------------------------------------------------
       !
@@ -735 +884 @@
          WRITE(numout,*) '      use special values for dynamics   ln_spc_dyn    = ', ln_spc_dyn
          WRITE(numout,*) '      check bathymetry                  ln_chk_bathy  = ', ln_chk_bathy
-      ENDIF
-      !
-      !
-      IF( agrif_oce_alloc()  > 0 )   CALL ctl_warn('agrif agrif_oce_alloc: allocation of arrays failed')
+         WRITE(numout,*) '      south boundary                    ln_bry_south  = ', ln_bry_south
+      ENDIF
+      !
+      ! Set the number of ghost cells according to periodicity
+      nbghostcells_x = nbghostcells
+      nbghostcells_y_s = nbghostcells
+      nbghostcells_y_n = nbghostcells
+      !
+      IF ( jperio == 1 ) nbghostcells_x = 0
+      IF ( .NOT. ln_bry_south ) nbghostcells_y_s = 0
+
+      ! Some checks
+      IF( jpiglo /= nbcellsx + 2 + 2*nbghostcells_x )   &
+          CALL ctl_stop( 'STOP', 'agrif_nemo_init: Agrif children requires jpiglo == nbcellsx + 2 + 2*nbghostcells_x' )
+      IF( jpjglo /= nbcellsy + 2 + nbghostcells_y_s + nbghostcells_y_n )   &
+          CALL ctl_stop( 'STOP', 'agrif_nemo_init: Agrif children requires jpjglo == nbcellsy + 2 + nbghostcells_y_s + nbghostcells_y_n' )
+      IF( ln_use_jattr )   CALL ctl_stop( 'STOP', 'agrif_nemo_init:Agrif children requires ln_use_jattr = .false. ' )
       !
    END SUBROUTINE agrif_nemo_init
 
 # if defined key_mpp_mpi
-
    SUBROUTINE Agrif_InvLoc( indloc, nprocloc, i, indglob )
       !!----------------------------------------------------------------------
@@ -803 +964 @@
 # endif
 
+   SUBROUTINE nemo_mapping(ndim,ptx,pty,bounds,bounds_chunks,correction_required,nb_chunks)
+      !!----------------------------------------------------------------------
+      !!                   *** ROUTINE Nemo_mapping ***
+      !!----------------------------------------------------------------------
+      USE dom_oce
+      !!
+      IMPLICIT NONE
+      !
+      INTEGER :: ndim
+      INTEGER :: ptx, pty
+      INTEGER, DIMENSION(ndim,2,2) :: bounds
+      INTEGER, DIMENSION(:,:,:,:), ALLOCATABLE :: bounds_chunks
+      LOGICAL, DIMENSION(:), ALLOCATABLE :: correction_required
+      INTEGER :: nb_chunks
+      !
+      INTEGER :: i
+
+      IF (agrif_debug_interp) THEN
+         DO i=1,ndim
+            WRITE(*,*) 'direction = ',i,bounds(i,1,2),bounds(i,2,2)
+         ENDDO
+      ENDIF
+
+      IF( bounds(2,2,2) > jpjglo) THEN
+         IF( bounds(2,1,2) <=jpjglo) THEN
+            nb_chunks = 2
+            ALLOCATE(bounds_chunks(nb_chunks,ndim,2,2))
+            ALLOCATE(correction_required(nb_chunks))
+            DO i = 1,nb_chunks
+               bounds_chunks(i,:,:,:) = bounds
+            END DO
+        
+      ! FIRST CHUNCK (for j<=jpjglo)   
+
+      ! Original indices
+            bounds_chunks(1,1,1,1) = bounds(1,1,2)
+            bounds_chunks(1,1,2,1) = bounds(1,2,2)
+            bounds_chunks(1,2,1,1) = bounds(2,1,2)
+            bounds_chunks(1,2,2,1) = jpjglo
+
+            bounds_chunks(1,1,1,2) = bounds(1,1,2)
+            bounds_chunks(1,1,2,2) = bounds(1,2,2)
+            bounds_chunks(1,2,1,2) = bounds(2,1,2)
+            bounds_chunks(1,2,2,2) = jpjglo
+
+      ! Correction required or not
+            correction_required(1)=.FALSE.
+       
+      ! SECOND CHUNCK (for j>jpjglo)
+
+      ! Original indices
+            bounds_chunks(2,1,1,1) = bounds(1,1,2)
+            bounds_chunks(2,1,2,1) = bounds(1,2,2)
+            bounds_chunks(2,2,1,1) = jpjglo-2
+            bounds_chunks(2,2,2,1) = bounds(2,2,2)
+
+      ! Where to find them
+      ! We use the relation TAB(ji,jj)=TAB(jpiglo-ji+2,jpjglo-2-(jj-jpjglo))
+
+            IF( ptx == 2) THEN ! T, V points
+               bounds_chunks(2,1,1,2) = jpiglo-bounds(1,2,2)+2
+               bounds_chunks(2,1,2,2) = jpiglo-bounds(1,1,2)+2
+            ELSE ! U, F points
+               bounds_chunks(2,1,1,2) = jpiglo-bounds(1,2,2)+1
+               bounds_chunks(2,1,2,2) = jpiglo-bounds(1,1,2)+1       
+            ENDIF
+
+            IF( pty == 2) THEN ! T, U points
+               bounds_chunks(2,2,1,2) = jpjglo-2-(bounds(2,2,2) -jpjglo)
+               bounds_chunks(2,2,2,2) = jpjglo-2-(jpjglo-2      -jpjglo)
+            ELSE ! V, F points
+               bounds_chunks(2,2,1,2) = jpjglo-3-(bounds(2,2,2) -jpjglo)
+               bounds_chunks(2,2,2,2) = jpjglo-3-(jpjglo-2      -jpjglo)
+            ENDIF
+      ! Correction required or not
+            correction_required(2)=.TRUE.
+
+         ELSE
+            nb_chunks = 1
+            ALLOCATE(bounds_chunks(nb_chunks,ndim,2,2))
+            ALLOCATE(correction_required(nb_chunks))
+            DO i=1,nb_chunks
+               bounds_chunks(i,:,:,:) = bounds
+            END DO
+
+            bounds_chunks(1,1,1,1) = bounds(1,1,2)
+            bounds_chunks(1,1,2,1) = bounds(1,2,2)
+            bounds_chunks(1,2,1,1) = bounds(2,1,2)
+            bounds_chunks(1,2,2,1) = bounds(2,2,2)
+
+            bounds_chunks(1,1,1,2) = jpiglo-bounds(1,2,2)+2
+            bounds_chunks(1,1,2,2) = jpiglo-bounds(1,1,2)+2
+
+            bounds_chunks(1,2,1,2) = jpjglo-2-(bounds(2,2,2)-jpjglo)
+            bounds_chunks(1,2,2,2) = jpjglo-2-(bounds(2,1,2)-jpjglo)
+
+            IF( ptx == 2) THEN ! T, V points
+               bounds_chunks(1,1,1,2) = jpiglo-bounds(1,2,2)+2
+               bounds_chunks(1,1,2,2) = jpiglo-bounds(1,1,2)+2
+            ELSE ! U, F points
+               bounds_chunks(1,1,1,2) = jpiglo-bounds(1,2,2)+1
+               bounds_chunks(1,1,2,2) = jpiglo-bounds(1,1,2)+1       
+            ENDIF
+
+            IF (pty == 2) THEN ! T, U points
+               bounds_chunks(1,2,1,2) = jpjglo-2-(bounds(2,2,2) -jpjglo)
+               bounds_chunks(1,2,2,2) = jpjglo-2-(bounds(2,1,2) -jpjglo)
+            ELSE ! V, F points
+               bounds_chunks(1,2,1,2) = jpjglo-3-(bounds(2,2,2) -jpjglo)
+               bounds_chunks(1,2,2,2) = jpjglo-3-(bounds(2,1,2) -jpjglo)
+            ENDIF
+
+            correction_required(1)=.TRUE.          
+         ENDIF
+
+      ELSE IF (bounds(1,1,2) < 1) THEN
+         IF (bounds(1,2,2) > 0) THEN
+            nb_chunks = 2
+            ALLOCATE(correction_required(nb_chunks))
+            correction_required=.FALSE.
+            ALLOCATE(bounds_chunks(nb_chunks,ndim,2,2))
+            DO i=1,nb_chunks
+               bounds_chunks(i,:,:,:) = bounds
+            END DO
+              
+            bounds_chunks(1,1,1,2) = bounds(1,1,2)+jpiglo-2
+            bounds_chunks(1,1,2,2) = 1+jpiglo-2
+          
+            bounds_chunks(1,1,1,1) = bounds(1,1,2)
+            bounds_chunks(1,1,2,1) = 1
+       
+            bounds_chunks(2,1,1,2) = 2
+            bounds_chunks(2,1,2,2) = bounds(1,2,2)
+          
+            bounds_chunks(2,1,1,1) = 2
+            bounds_chunks(2,1,2,1) = bounds(1,2,2)
+
+         ELSE
+            nb_chunks = 1
+            ALLOCATE(correction_required(nb_chunks))
+            correction_required=.FALSE.
+            ALLOCATE(bounds_chunks(nb_chunks,ndim,2,2))
+            DO i=1,nb_chunks
+               bounds_chunks(i,:,:,:) = bounds
+            END DO    
+            bounds_chunks(1,1,1,2) = bounds(1,1,2)+jpiglo-2
+            bounds_chunks(1,1,2,2) = bounds(1,2,2)+jpiglo-2
+          
+            bounds_chunks(1,1,1,1) = bounds(1,1,2)
+           bounds_chunks(1,1,2,1) = bounds(1,2,2)
+         ENDIF
+      ELSE
+         nb_chunks=1  
+         ALLOCATE(correction_required(nb_chunks))
+         correction_required=.FALSE.
+         ALLOCATE(bounds_chunks(nb_chunks,ndim,2,2))
+         DO i=1,nb_chunks
+            bounds_chunks(i,:,:,:) = bounds
+         END DO
+         bounds_chunks(1,1,1,2) = bounds(1,1,2)
+         bounds_chunks(1,1,2,2) = bounds(1,2,2)
+         bounds_chunks(1,2,1,2) = bounds(2,1,2)
+         bounds_chunks(1,2,2,2) = bounds(2,2,2)
+          
+         bounds_chunks(1,1,1,1) = bounds(1,1,2)
+         bounds_chunks(1,1,2,1) = bounds(1,2,2)
+         bounds_chunks(1,2,1,1) = bounds(2,1,2)
+         bounds_chunks(1,2,2,1) = bounds(2,2,2)              
+      ENDIF
+        
+   END SUBROUTINE nemo_mapping
+
+   FUNCTION agrif_external_switch_index(ptx,pty,i1,isens)
+
+   USE dom_oce
+
+   INTEGER :: ptx, pty, i1, isens
+   INTEGER :: agrif_external_switch_index
+
+   IF( isens == 1 ) THEN
+      IF( ptx == 2 ) THEN ! T, V points
+         agrif_external_switch_index = jpiglo-i1+2
+      ELSE ! U, F points
+         agrif_external_switch_index = jpiglo-i1+1      
+      ENDIF
+   ELSE IF( isens ==2 ) THEN
+      IF ( pty == 2 ) THEN ! T, U points
+         agrif_external_switch_index = jpjglo-2-(i1 -jpjglo)
+      ELSE ! V, F points
+         agrif_external_switch_index = jpjglo-3-(i1 -jpjglo)
+      ENDIF
+   ENDIF
+
+   END function agrif_external_switch_index
+
+   SUBROUTINE Correct_field(tab2d,i1,i2,j1,j2)
+      !!----------------------------------------------------------------------
+      !!                   *** ROUTINE Correct_field ***
+      !!----------------------------------------------------------------------
+   
+   USE dom_oce
+   USE agrif_oce
+
+   INTEGER :: i1,i2,j1,j2
+   REAL(wp), DIMENSION(i1:i2,j1:j2) :: tab2d
+
+   INTEGER :: i,j
+   REAL(wp), DIMENSION(i1:i2,j1:j2) :: tab2dtemp
+
+   tab2dtemp = tab2d
+
+   IF( .NOT. use_sign_north ) THEN
+      DO j=j1,j2
+         DO i=i1,i2
+            tab2d(i,j)=tab2dtemp(i2-(i-i1),j2-(j-j1))
+         END DO
+      END DO
+   ELSE
+      DO j=j1,j2
+         DO i=i1,i2
+            tab2d(i,j)=sign_north * tab2dtemp(i2-(i-i1),j2-(j-j1))
+         END DO
+      END DO
+   ENDIF
+
+   END SUBROUTINE Correct_field
+
 #else
    SUBROUTINE Subcalledbyagrif