Changeset 12395 for NEMO/releases/release-4.0-HEAD/src/ICE/icethd_zdf_bl99.F90

Timestamp:

2020-02-18T11:23:57+01:00 (5 years ago)

Author:

clem

Message:

correct heat diffusion in the ice in case of Jules coupling (Met Office), and add a small improvement when reading ice temperature with bdy

File:

• NEMO/releases/release-4.0-HEAD/src/ICE/icethd_zdf_bl99.F90 (modified) (3 diffs)

NEMO/releases/release-4.0-HEAD/src/ICE/icethd_zdf_bl99.F90

@@ -769 +769 @@
       !
       ! --- calculate conduction fluxes (positive downward)
-
+      !     bottom ice conduction flux
       DO ji = 1, npti
-         !                                ! surface ice conduction flux
-         qcn_ice_top_1d(ji) =  -           isnow(ji)   * zkappa_s(ji,0)      * zg1s * ( t_s_1d(ji,1) - t_su_1d(ji) )  &
-            &                  - ( 1._wp - isnow(ji) ) * zkappa_i(ji,0)      * zg1  * ( t_i_1d(ji,1) - t_su_1d(ji) )
-         !                                ! bottom ice conduction flux
-         qcn_ice_bot_1d(ji) =                          - zkappa_i(ji,nlay_i) * zg1  * ( t_bo_1d(ji ) - t_i_1d (ji,nlay_i) )
+         qcn_ice_bot_1d(ji) = - zkappa_i(ji,nlay_i) * zg1  * ( t_bo_1d(ji ) - t_i_1d (ji,nlay_i) )
       END DO
-      
+      !     surface ice conduction flux
+      IF( k_cnd == np_cnd_OFF .OR. k_cnd == np_cnd_EMU ) THEN
+         !
+         DO ji = 1, npti
+            qcn_ice_top_1d(ji) =  -           isnow(ji)   * zkappa_s(ji,0) * zg1s * ( t_s_1d(ji,1) - t_su_1d(ji) )  &
+               &                  - ( 1._wp - isnow(ji) ) * zkappa_i(ji,0) * zg1  * ( t_i_1d(ji,1) - t_su_1d(ji) )
+         END DO
+         !
+      ELSEIF( k_cnd == np_cnd_ON ) THEN
+         !
+         DO ji = 1, npti
+            qcn_ice_top_1d(ji) = qcn_ice_1d(ji)
+         END DO
+         !
+      ENDIF
+      !     surface ice temperature
+      IF( k_cnd == np_cnd_ON .AND. ln_cndemulate ) THEN
+         !
+         DO ji = 1, npti
+            t_su_1d(ji) = (  qcn_ice_top_1d(ji) &            ! calculate surface temperature
+               &           +           isnow(ji)   * zkappa_s(ji,0) * zg1s * t_s_1d(ji,1) &
+               &           + ( 1._wp - isnow(ji) ) * zkappa_i(ji,0) * zg1  * t_i_1d(ji,1) &
+               &          ) / MAX( epsi10, isnow(ji) * zkappa_s(ji,0) * zg1s + ( 1._wp - isnow(ji) ) * zkappa_i(ji,0) * zg1 )
+            t_su_1d(ji) = MAX( MIN( t_su_1d(ji), rt0 ), rt0 - 100._wp )  ! cap t_su
+         END DO
+         !
+      ENDIF
       !
       ! --- Diagnose the heat loss due to changing non-solar / conduction flux --- !
@@ -787 +809 @@
          END DO
          !
-      ELSEIF( k_cnd == np_cnd_ON ) THEN
-         !
-         DO ji = 1, npti
-            hfx_err_dif_1d(ji) = hfx_err_dif_1d(ji) - ( qcn_ice_top_1d(ji) - qcn_ice_1d(ji) ) * a_i_1d(ji) 
-         END DO
-         !
       ENDIF
-      
       !
       ! --- Diagnose the heat loss due to non-fully converged temperature solution (should not be above 10-4 W-m2) --- !
@@ -856 +871 @@
          t_i_1d    (1:npti,:) = ztiold        (1:npti,:)
          qcn_ice_1d(1:npti)   = qcn_ice_top_1d(1:npti)
-
-         !!clem
-         ! remettre t_su_1d, qns_ice_1d et dqns_ice_1d comme avant puisqu'on devrait faire comme si on avant conduction = input
-         !clem
       ENDIF
       !