Index: branches/UKMO/v3_6_extra_CMIP6_diagnostics/NEMOGCM/CONFIG/SHARED/field_def.xml
===================================================================
--- branches/UKMO/v3_6_extra_CMIP6_diagnostics/NEMOGCM/CONFIG/SHARED/field_def.xml	(revision 6870)
+++ branches/UKMO/v3_6_extra_CMIP6_diagnostics/NEMOGCM/CONFIG/SHARED/field_def.xml	(revision 6871)
@@ -660,5 +660,15 @@
         <field id="sophtldf_ind"      long_name="Diffusive Heat Transport: Indian"             unit="PW"       grid_ref="gznl_T_2D" />
         <field id="sophtldf_ipc"      long_name="Diffusive Heat Transport: Pacific+Indian"     unit="PW"       grid_ref="gznl_T_2D" />
-        <field id="sophteiv"          long_name="Heat Transport from mesoscale eddy advection"                     unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtove"          long_name="Overturning Heat Transport"                     unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtove_atl"      long_name="Overturning Heat Transport: Atlantic"           unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtove_pac"      long_name="Overturning Heat Transport: Pacific"            unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtove_ind"      long_name="Overturning Heat Transport: Indian"             unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtove_ipc"      long_name="Overturning Heat Transport: Pacific+Indian"     unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtbtr"          long_name="Barotropic Heat Transport"                     unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtbtr_atl"      long_name="Barotropic Heat Transport: Atlantic"           unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtbtr_pac"      long_name="Barotropic Heat Transport: Pacific"            unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtbtr_ind"      long_name="Barotropic Heat Transport: Indian"             unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophtbtr_ipc"      long_name="Barotropic Heat Transport: Pacific+Indian"     unit="PW"       grid_ref="gznl_T_2D" />
+        <field id="sophteiv"          long_name="Heat Transport from mesoscale eddy oveection"                     unit="PW"       grid_ref="gznl_T_2D" />
         <field id="sophteiv_atl"      long_name="Heat Transport from mesoscale eddy advection: Atlantic"           unit="PW"       grid_ref="gznl_T_2D" />
         <field id="sophteiv_pac"      long_name="Heat Transport from mesoscale eddy advection: Pacific"            unit="PW"       grid_ref="gznl_T_2D" />
@@ -670,4 +680,14 @@
         <field id="sopstadv_ind"      long_name="Advective Salt Transport: Indian"             unit="Giga g/s" grid_ref="gznl_T_2D" />
         <field id="sopstadv_ipc"      long_name="Advective Salt Transport: Pacific+Indian"     unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstove"          long_name="Overturning Salt Transport"                     unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstove_atl"      long_name="Overturning Salt Transport: Atlantic"           unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstove_pac"      long_name="Overturning Salt Transport: Pacific"            unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstove_ind"      long_name="Overturning Salt Transport: Indian"             unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstove_ipc"      long_name="Overturning Salt Transport: Pacific+Indian"     unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstbtr"          long_name="Barotropic Salt Transport"                     unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstbtr_atl"      long_name="Barotropic Salt Transport: Atlantic"           unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstbtr_pac"      long_name="Barotropic Salt Transport: Pacific"            unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstbtr_ind"      long_name="Barotropic Salt Transport: Indian"             unit="Giga g/s" grid_ref="gznl_T_2D" />
+        <field id="sopstbtr_ipc"      long_name="Barotropic Salt Transport: Pacific+Indian"     unit="Giga g/s" grid_ref="gznl_T_2D" />
         <field id="sopstldf"          long_name="Diffusive Salt Transport"                     unit="Giga g/s" grid_ref="gznl_T_2D" />
         <field id="sopstldf_atl"      long_name="Diffusive Salt Transport: Atlantic"           unit="Giga g/s" grid_ref="gznl_T_2D" />
Index: branches/UKMO/v3_6_extra_CMIP6_diagnostics/NEMOGCM/NEMO/OPA_SRC/DIA/diaptr.F90
===================================================================
--- branches/UKMO/v3_6_extra_CMIP6_diagnostics/NEMOGCM/NEMO/OPA_SRC/DIA/diaptr.F90	(revision 6870)
+++ branches/UKMO/v3_6_extra_CMIP6_diagnostics/NEMOGCM/NEMO/OPA_SRC/DIA/diaptr.F90	(revision 6871)
@@ -44,4 +44,6 @@
    REAL(wp), ALLOCATABLE, SAVE, PUBLIC, DIMENSION(:,:) ::   htr_adv, htr_ldf, htr_eiv, htr_vt   !: Heat TRansports (adv, diff, Bolus.)
    REAL(wp), ALLOCATABLE, SAVE, PUBLIC, DIMENSION(:,:) ::   str_adv, str_ldf, str_eiv, str_vs   !: Salt TRansports (adv, diff, Bolus.)
+   REAL(wp), ALLOCATABLE, SAVE, PUBLIC, DIMENSION(:,:) ::   htr_ove, str_ove   !: heat Salt TRansports ( overturn.)
+   REAL(wp), ALLOCATABLE, SAVE, PUBLIC, DIMENSION(:,:) ::   htr_btr, str_btr   !: heat Salt TRansports ( barotropic )
 
    LOGICAL, PUBLIC ::   ln_diaptr   !  Poleward transport flag (T) or not (F)
@@ -78,9 +80,16 @@
       !
       INTEGER  ::   ji, jj, jk, jn   ! dummy loop indices
-      REAL(wp) ::   zv, zsfc               ! local scalar
+      REAL(wp) ::   zsfc,zvfc               ! local scalar
       REAL(wp), DIMENSION(jpi,jpj)     ::  z2d   ! 2D workspace
       REAL(wp), DIMENSION(jpi,jpj,jpk) ::  z3d   ! 3D workspace
       REAL(wp), DIMENSION(jpi,jpj,jpk) ::  zmask   ! 3D workspace
       REAL(wp), DIMENSION(jpi,jpj,jpk,jpts) ::  zts   ! 3D workspace
+      !
+      !overturning calculation
+      REAL(wp), DIMENSION(jpj,jpk,nptr) ::   sjk  , r1_sjk ! i-mean i-k-surface and its inverse
+      REAL(wp), DIMENSION(jpj,jpk,nptr) ::   v_msf, sn_jk  , tn_jk ! i-mean T and S, j-Stream-Function
+      REAL(wp), DIMENSION(jpi,jpj,jpk) ::  zvn   ! 3D workspace
+
+
       CHARACTER( len = 12 )  :: cl1
       !!----------------------------------------------------------------------
@@ -112,4 +121,116 @@
             END DO
          ENDIF
+         IF( iom_use("sopstove") .OR. iom_use("sophtove") .OR. iom_use("sopstbtr") .OR. iom_use("sophtbtr") ) THEN
+            ! define fields multiplied by scalar
+            zmask(:,:,:) = 0._wp
+            zts(:,:,:,:) = 0._wp
+            zvn(:,:,:) = 0._wp
+            DO jk = 1, jpkm1
+               DO jj = 1, jpjm1
+                  DO ji = 1, jpi
+                     zvfc = e1v(ji,jj) * fse3v(ji,jj,jk)
+                     zmask(ji,jj,jk)      = vmask(ji,jj,jk)      * zvfc
+                     zts(ji,jj,jk,jp_tem) = (tsn(ji,jj,jk,jp_tem)+tsn(ji,jj,jk,jp_tem)) * 0.5 * zvfc  !Tracers averaged onto V grid
+                     zts(ji,jj,jk,jp_sal) = (tsn(ji,jj,jk,jp_sal)+tsn(ji,jj,jk,jp_sal)) * 0.5 * zvfc
+                     zvn(ji,jj,jk)        = vn(ji,jj,jk)         * zvfc
+                  ENDDO
+               ENDDO
+             ENDDO
+         ENDIF
+         IF( iom_use("sopstove") .OR. iom_use("sophtove") ) THEN
+             sjk(:,:,1) = ptr_sjk( zmask(:,:,:), btmsk(:,:,1) )
+             r1_sjk(:,:,1) = 0._wp
+             WHERE( sjk(:,:,1) /= 0._wp )   r1_sjk(:,:,1) = 1._wp / sjk(:,:,1)
+
+             ! i-mean T and S, j-Stream-Function, global
+             tn_jk(:,:,1) = ptr_sjk( zts(:,:,:,jp_tem) ) * r1_sjk(:,:,1)
+             sn_jk(:,:,1) = ptr_sjk( zts(:,:,:,jp_sal) ) * r1_sjk(:,:,1)
+             v_msf(:,:,1) = ptr_sjk( zvn(:,:,:) )
+
+             htr_ove(:,1) = SUM( v_msf(:,:,1)*tn_jk(:,:,1) ,2 )
+             str_ove(:,1) = SUM( v_msf(:,:,1)*sn_jk(:,:,1) ,2 )
+
+             z2d(1,:) = htr_ove(:,1) * rc_pwatt        !  (conversion in PW)
+             DO ji = 1, jpi
+               z2d(ji,:) = z2d(1,:)
+             ENDDO
+             cl1 = 'sophtove'
+             CALL iom_put( TRIM(cl1), z2d )
+             z2d(1,:) = str_ove(:,1) * rc_ggram        !  (conversion in Gg)
+             DO ji = 1, jpi
+               z2d(ji,:) = z2d(1,:)
+             ENDDO
+             cl1 = 'sopstove'
+             CALL iom_put( TRIM(cl1), z2d )
+             IF( ln_subbas ) THEN
+                DO jn = 2, nptr
+                    sjk(:,:,jn) = ptr_sjk( zmask(:,:,:), btmsk(:,:,jn) )
+                    r1_sjk(:,:,jn) = 0._wp
+                    WHERE( sjk(:,:,jn) /= 0._wp )   r1_sjk(:,:,jn) = 1._wp / sjk(:,:,jn)
+
+                    ! i-mean T and S, j-Stream-Function, basin
+                    tn_jk(:,:,jn) = ptr_sjk( zts(:,:,:,jp_tem), btmsk(:,:,jn) ) * r1_sjk(:,:,jn)
+                    sn_jk(:,:,jn) = ptr_sjk( zts(:,:,:,jp_sal), btmsk(:,:,jn) ) * r1_sjk(:,:,jn)
+                    v_msf(:,:,jn) = ptr_sjk( zvn(:,:,:), btmsk(:,:,jn) ) 
+                    htr_ove(:,jn) = SUM( v_msf(:,:,jn)*tn_jk(:,:,jn) ,2 )
+                    str_ove(:,jn) = SUM( v_msf(:,:,jn)*sn_jk(:,:,jn) ,2 )
+
+                    z2d(1,:) = htr_ove(:,jn) * rc_pwatt !  (conversion in PW)
+                    DO ji = 1, jpi
+                        z2d(ji,:) = z2d(1,:)
+                    ENDDO
+                    cl1 = TRIM('sophtove_'//clsubb(jn))
+                    CALL iom_put( cl1, z2d )
+                    z2d(1,:) = str_ove(:,jn) * rc_ggram        ! (conversion in Gg)
+                    DO ji = 1, jpi
+                        z2d(ji,:) = z2d(1,:)
+                    ENDDO
+                    cl1 = TRIM('sopstove_'//clsubb(jn))
+                    CALL iom_put( cl1, z2d )
+                END DO
+             ENDIF
+         ENDIF
+         IF( iom_use("sopstbtr") .OR. iom_use("sophtbtr") ) THEN
+         ! Calculate barotropic heat and salt transport here 
+             sjk(:,1,1) = ptr_sj( zmask(:,:,:), btmsk(:,:,1) )
+             r1_sjk(:,1,1) = 0._wp
+             WHERE( sjk(:,1,1) /= 0._wp )   r1_sjk(:,1,1) = 1._wp / sjk(:,1,1)
+            
+            htr_btr(:,1) = ptr_sj( zvn(:,:,:)) * ptr_sj( zts(:,:,:,jp_tem) ) * r1_sjk(:,1,1)
+            str_btr(:,1) = ptr_sj( zvn(:,:,:)) * ptr_sj( zts(:,:,:,jp_sal) ) * r1_sjk(:,1,1)
+            z2d(1,:) = htr_btr(:,1) * rc_pwatt        !  (conversion in PW)
+            DO ji = 1, jpi
+               z2d(ji,:) = z2d(1,:)
+            ENDDO
+            cl1 = 'sophtbtr'
+            CALL iom_put( TRIM(cl1), z2d )
+            z2d(1,:) = str_btr(:,1) * rc_ggram        !  (conversion in Gg)
+            DO ji = 1, jpi
+              z2d(ji,:) = z2d(1,:)
+            ENDDO
+            cl1 = 'sopstbtr'
+            CALL iom_put( TRIM(cl1), z2d )
+            IF( ln_subbas ) THEN
+                DO jn = 2, nptr
+                    sjk(:,1,jn) = ptr_sj( zmask(:,:,:), btmsk(:,:,jn) )
+                    r1_sjk(:,1,jn) = 0._wp
+                    WHERE( sjk(:,1,jn) /= 0._wp )   r1_sjk(:,1,jn) = 1._wp / sjk(:,1,jn)
+                    htr_btr(:,jn) = ptr_sj( zvn(:,:,:)) * ptr_sj( zts(:,:,:,jp_tem) ) * r1_sjk(:,1,jn)
+                    str_btr(:,jn) = ptr_sj( zvn(:,:,:)) * ptr_sj( zts(:,:,:,jp_sal) ) * r1_sjk(:,1,jn)
+                    z2d(1,:) = htr_btr(:,jn) * rc_pwatt !  (conversion in PW)
+                    DO ji = 1, jpi
+                        z2d(ji,:) = z2d(1,:)
+                    ENDDO
+                    cl1 = TRIM('sophtbtr_'//clsubb(jn))
+                    CALL iom_put( cl1, z2d )
+                    z2d(1,:) = str_btr(:,jn) * rc_ggram        ! (conversion in Gg)
+                    DO ji = 1, jpi
+                        z2d(ji,:) = z2d(1,:)
+                    ENDDO
+                    cl1 = TRIM('sopstbtr_'//clsubb(jn))
+                    CALL iom_put( cl1, z2d )
+               ENDDO
+            ENDIF !ln_subbas
+         ENDIF !iom_use("sopstbtr....)
          !
       ELSE
@@ -355,8 +476,10 @@
          ! Initialise arrays to zero because diatpr is called before they are first calculated
          ! Note that this means diagnostics will not be exactly correct when model run is restarted.
-         htr_adv(:,:) = 0._wp  ;  str_adv(:,:) =  0._wp  
+         htr_adv(:,:) = 0._wp  ;  str_adv(:,:) =  0._wp 
          htr_ldf(:,:) = 0._wp  ;  str_ldf(:,:) =  0._wp 
          htr_eiv(:,:) = 0._wp  ;  str_eiv(:,:) =  0._wp 
-         htr_vt(:,:) = 0._wp  ;   str_vs(:,:) =  0._wp 
+         htr_vt(:,:) = 0._wp  ;   str_vs(:,:) =  0._wp
+         htr_ove(:,:) = 0._wp  ;   str_ove(:,:) =  0._wp
+         htr_btr(:,:) = 0._wp  ;   str_btr(:,:) =  0._wp
          !
       ENDIF 
@@ -376,5 +499,4 @@
       INTEGER                                        :: jn    !
 
-      
       IF( cptr == 'adv' ) THEN
          IF( ktra == jp_tem )  htr_adv(:,1) = ptr_sj( pva(:,:,:) )
@@ -446,6 +568,5 @@
          !
       ENDIF
-
-   END SUBROUTINE
+   END SUBROUTINE dia_ptr_ohst_components
 
 
@@ -459,8 +580,9 @@
       ierr(:) = 0
       !
-      ALLOCATE( btmsk(jpi,jpj,nptr) ,           &
+      ALLOCATE( btmsk(jpi,jpj,nptr) ,              &
          &      htr_adv(jpj,nptr) , str_adv(jpj,nptr) ,   &
          &      htr_eiv(jpj,nptr) , str_eiv(jpj,nptr) ,   &
          &      htr_vt(jpj,nptr)  , str_vs(jpj,nptr)  ,   &
+         &      htr_ove(jpj,nptr) , str_ove(jpj,nptr) ,   &
          &      htr_ldf(jpj,nptr) , str_ldf(jpj,nptr) , STAT=ierr(1)  )
          !
@@ -590,5 +712,5 @@
 #endif
       !!--------------------------------------------------------------------
-      !
+     !
       p_fval => p_fval2d
 
@@ -622,4 +744,5 @@
 #endif
       !
+
    END FUNCTION ptr_sjk
 
