Changeset 12925 for NEMO/trunk/src/OCE/SBC/sbccpl.F90

Timestamp:

2020-05-14T15:46:17+02:00 (4 years ago)

Author:

smasson

Message:

trunk: avoid pollution of atm-ice stress at coastal points, see #2464

File:

• NEMO/trunk/src/OCE/SBC/sbccpl.F90 (modified) (2 diffs)

NEMO/trunk/src/OCE/SBC/sbccpl.F90

@@ -1481 +1481 @@
       INTEGER ::   ji, jj   ! dummy loop indices
       INTEGER ::   itx      ! index of taux over ice
+      REAL(wp)                     ::   zztmp1, zztmp2
       REAL(wp), DIMENSION(jpi,jpj) ::   ztx, zty 
       !!----------------------------------------------------------------------
@@ -1544 +1545 @@
             p_taui(:,:) = frcv(jpr_itx1)%z3(:,:,1)                   ! (U,V) ==> (U,V)
             p_tauj(:,:) = frcv(jpr_ity1)%z3(:,:,1)
-         CASE( 'F' )
-            DO_2D_00_00
-               p_taui(ji,jj) = 0.5 * ( frcv(jpr_itx1)%z3(ji,jj,1) + frcv(jpr_itx1)%z3(ji  ,jj-1,1) )
-               p_tauj(ji,jj) = 0.5 * ( frcv(jpr_ity1)%z3(ji,jj,1) + frcv(jpr_ity1)%z3(ji-1,jj  ,1) )
-            END_2D
          CASE( 'T' )
             DO_2D_00_00
-               p_taui(ji,jj) = 0.5 * ( frcv(jpr_itx1)%z3(ji+1,jj  ,1) + frcv(jpr_itx1)%z3(ji,jj,1) )
-               p_tauj(ji,jj) = 0.5 * ( frcv(jpr_ity1)%z3(ji  ,jj+1,1) + frcv(jpr_ity1)%z3(ji,jj,1) )
+               ! take care of the land-sea mask to avoid "pollution" of coastal stress. p[uv]taui used in frazil and  rheology 
+               zztmp1 = 0.5_wp * ( 2. - umask(ji,jj,1) ) * MAX( tmask(ji,jj,1),tmask(ji+1,jj  ,1) )
+               zztmp2 = 0.5_wp * ( 2. - vmask(ji,jj,1) ) * MAX( tmask(ji,jj,1),tmask(ji  ,jj+1,1) )
+               p_taui(ji,jj) = zztmp1 * ( frcv(jpr_itx1)%z3(ji+1,jj  ,1) + frcv(jpr_itx1)%z3(ji,jj,1) )
+               p_tauj(ji,jj) = zztmp2 * ( frcv(jpr_ity1)%z3(ji  ,jj+1,1) + frcv(jpr_ity1)%z3(ji,jj,1) )
             END_2D
-         CASE( 'I' )
-            DO_2D_00_00
-               p_taui(ji,jj) = 0.5 * ( frcv(jpr_itx1)%z3(ji+1,jj+1,1) + frcv(jpr_itx1)%z3(ji+1,jj  ,1) )
-               p_tauj(ji,jj) = 0.5 * ( frcv(jpr_ity1)%z3(ji+1,jj+1,1) + frcv(jpr_ity1)%z3(ji  ,jj+1,1) )
-            END_2D
+            CALL lbc_lnk_multi( 'sbccpl', p_taui, 'U',  -1., p_tauj, 'V',  -1. )
          END SELECT
-         IF( srcv(jpr_itx1)%clgrid /= 'U' ) THEN 
-            CALL lbc_lnk_multi( 'sbccpl', p_taui, 'U',  -1., p_tauj, 'V',  -1. )
-         ENDIF
          
       ENDIF