Changeset 9299 for branches/UKMO/r6232_tracer_advection/NEMOGCM/NEMO/OPA_SRC/TRA/trabbl.F90

Timestamp:

2018-02-01T13:12:00+01:00 (6 years ago)

Author:

jcastill

Message:

First implementation of tracers - it has not been properly tested yet

File:

• branches/UKMO/r6232_tracer_advection/NEMOGCM/NEMO/OPA_SRC/TRA/trabbl.F90 (modified) (1 diff)

branches/UKMO/r6232_tracer_advection/NEMOGCM/NEMO/OPA_SRC/TRA/trabbl.F90

@@ -548 +548 @@
       zmbk(:,:) = REAL( mbkv_d(:,:), wp )   ;   CALL lbc_lnk(zmbk,'V',1.)   ;   mbkv_d(:,:) = MAX( INT( zmbk(:,:) ), 1 )
 
-                                        !* sign of grad(H) at u- and v-points
-      mgrhu(jpi,:) = 0   ;   mgrhu(:,jpj) = 0   ;   mgrhv(jpi,:) = 0   ;   mgrhv(:,jpj) = 0
+                                        !* sign of grad(H) at u- and v-points; zero if grad(H) = 0
+      mgrhu(:,:) = 0   ;   mgrhv(:,:) = 0
       DO jj = 1, jpjm1
          DO ji = 1, jpim1
-            mgrhu(ji,jj) = INT(  SIGN( 1.e0, gdept_0(ji+1,jj,mbkt(ji+1,jj)) - gdept_0(ji,jj,mbkt(ji,jj)) )  )
-            mgrhv(ji,jj) = INT(  SIGN( 1.e0, gdept_0(ji,jj+1,mbkt(ji,jj+1)) - gdept_0(ji,jj,mbkt(ji,jj)) )  )
+            IF( gdept_0(ji+1,jj,mbkt(ji+1,jj)) - gdept_0(ji,jj,mbkt(ji,jj)) /= 0._wp ) THEN 
+               mgrhu(ji,jj) = INT(  SIGN( 1.e0, gdept_0(ji+1,jj,mbkt(ji+1,jj)) - gdept_0(ji,jj,mbkt(ji,jj)) )  ) 
+            ENDIF 
+            ! 
+            IF( gdept_0(ji,jj+1,mbkt(ji,jj+1)) - gdept_0(ji,jj,mbkt(ji,jj)) /= 0._wp ) THEN 
+               mgrhv(ji,jj) = INT(  SIGN( 1.e0, gdept_0(ji,jj+1,mbkt(ji,jj+1)) - gdept_0(ji,jj,mbkt(ji,jj)) )  ) 
+            ENDIF 
          END DO
       END DO