Changeset 2896 for LMDZ5/trunk

Timestamp:

May 31, 2017, 12:25:08 AM (7 years ago)

Author:

fhourdin

Message:

Correction d'une erreur sur le calcul de T2m diagnostic.
On passait deux fois la rugozité pour la quantité de mouvement
z0m,z0m au lieu de z0m,z0h.
L'ancienne version peut être réactivée avec
iflag_pbl_surface_t2m_bug=1
Par défaut on met iflag_pbl_surface_t2m_bug=0 qui ne devrait faire
perdre la convergence numérique qu'avec des versions récentes d'Orchidee
différenciant les deux z0.

File:

• LMDZ5/trunk/libf/phylmd/pbl_surface_mod.F90 (modified) (5 diffs)

LMDZ5/trunk/libf/phylmd/pbl_surface_mod.F90

@@ -37 +37 @@
   !$OMP THREADPRIVATE(ftsoil)
 
+  integer, save :: iflag_pbl_surface_t2m_bug
+  !$OMP THREADPRIVATE(iflag_pbl_surface_t2m_bug)
+
 CONTAINS
 !
@@ -131 +134 @@
        CALL abort_physic(modname,abort_message,1)
     ENDIF
+
+    iflag_pbl_surface_t2m_bug=0
+    CALL getin_p('iflag_pbl_surface_t2m_bug',iflag_pbl_surface_t2m_bug)
 
   END SUBROUTINE pbl_surface_init
@@ -516 +522 @@
     REAL, DIMENSION(klon)              :: psfce, patm
     REAL, DIMENSION(klon)              :: qairsol, zgeo1, speed, zri1, pref !speed, zri1, pref, added by Fuxing WANG, 04/03/2015
-    REAL, DIMENSION(klon)              :: rugo1
+    REAL, DIMENSION(klon)              :: yz0h_oupas
     REAL, DIMENSION(klon)              :: yfluxsens
     REAL, DIMENSION(klon)              :: AcoefH, AcoefQ, BcoefH, BcoefQ
@@ -2483 +2489 @@
 !!!
        DO j=1, knon
-          i = ni(j)
-          rugo1(j) = yz0m(j)
-          IF(nsrf.EQ.is_oce) THEN
-             rugo1(j) = z0m(i,nsrf)
-          ENDIF
+!         i = ni(j)
+!         yz0h_oupas(j) = yz0m(j)
+!         IF(nsrf.EQ.is_oce) THEN
+!            yz0h_oupas(j) = z0m(i,nsrf)
+!         ENDIF
           psfce(j)=ypaprs(j,1)
           patm(j)=ypplay(j,1)
        END DO
+
+       IF (iflag_pbl_surface_t2m_bug==1) THEN
+          yz0h_oupas(1:knon)=yz0m(1:knon)
+       ELSE
+          yz0h_oupas(1:knon)=yz0h(1:knon)
+       ENDIF
        
 !      print*,'Dans pbl OK42A'
@@ -2496 +2508 @@
 !      print*, tair1,yt(:,1),y_d_t(:,1)
 
-! Calculate the temperature et relative humidity at 2m and the wind at 10m 
+! Calculate the temperatureflag_pbl_surface_t2m_bugiflag_pbl_surface_t2m_bug et relative humidity at 2m and the wind at 10m 
 !!! jyg le 07/02/2012
        IF (iflag_split .eq.0) THEN
         CALL stdlevvar(klon, knon, nsrf, zxli, &
             uzon, vmer, tair1, qair1, zgeo1, &
-            tairsol, qairsol, rugo1, rugo1, psfce, patm, &
+            tairsol, qairsol, yz0m, yz0h_oupas, psfce, patm, &
             yt2m, yq2m, yt10m, yq10m, yu10m, yustar)
        ELSE  !(iflag_split .eq.0)
         CALL stdlevvar(klon, knon, nsrf, zxli, &
             uzon_x, vmer_x, tair1_x, qair1_x, zgeo1_x, &
-            tairsol_x, qairsol, rugo1, rugo1, psfce, patm, &
+            tairsol_x, qairsol, yz0m, yz0h_oupas, psfce, patm, &
             yt2m_x, yq2m_x, yt10m_x, yq10m_x, yu10m_x, yustar_x)
         CALL stdlevvar(klon, knon, nsrf, zxli, &
             uzon_w, vmer_w, tair1_w, qair1_w, zgeo1_w, &
-            tairsol_w, qairsol, rugo1, rugo1, psfce, patm, &
+            tairsol_w, qairsol, yz0m, yz0h_oupas, psfce, patm, &
             yt2m_w, yq2m_w, yt10m_w, yq10m_w, yu10m_w, yustar_w)
 !!!