--- MITgcm/pkg/seaice/groatb.F	2003/02/14 22:30:16	1.1.2.4
+++ MITgcm/pkg/seaice/groatb.F	2003/05/23 22:06:20	1.4.4.7
@@ -19,7 +19,12 @@
 #include "FFIELDS.h"
 #include "SEAICE.h"
 #include "SEAICE_FFIELDS.h"
- 
+       COMMON /SEAICE_BOUND_RL/
+     &    MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE,
+     &    SEAICE_EPS, SEAICE_EPS_SQ
+      _RL SEAICE_EPS, SEAICE_EPS_SQ
+      _RL MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE
+
 C     === Routine arguments ===
 C     myThid - Thread no. that called this routine.
       _RL A22
@@ -33,11 +38,17 @@
 
       INTEGER i, j, bi, bj
       INTEGER KOPEN
-      _RL U1, V1
-
+      _RL U1, V1, SPEED_SQ
       _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
       _RL UG   (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
 
+#ifdef SEAICE_MULTILEVEL
+      INTEGER it
+      _RL RK
+      _RL HICEP(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
+      _RL FICEP(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
+#endif
+
 C if this is not done before then do it here
       _EXCH_XY_R8(UWIND, myThid)
       _EXCH_XY_R8(VWIND, myThid)
@@ -52,6 +63,9 @@
          DO I=1,sNx
           AREA(I,J,2,bi,bj)=MAX(A22,AREA(I,J,2,bi,bj))
           FHEFF(I,J,bi,bj)=0.0 _d 0
+#ifdef SEAICE_MULTILEVEL
+          FICEP(I,J)=0.0 _d 0
+#endif
           HICE(I,J)=HEFF(I,J,2,bi,bj)/AREA(I,J,2,bi,bj)
          ENDDO
         ENDDO
@@ -68,11 +82,16 @@
 
         DO J=1,sNy
          DO I=1,sNx
-          U1=0.25 _d 0*(UWIND(I-1,J-1,bi,bj)+UWIND(I-1,J,bi,bj)
-     1      +UWIND(I,J-1,bi,bj)+UWIND(I,J,bi,bj))
-          V1=0.25 _d 0*(VWIND(I-1,J-1,bi,bj)+VWIND(I-1,J,bi,bj)
-     1      +VWIND(I,J-1,bi,bj)+VWIND(I,J,bi,bj))
-          UG(I,J)=SQRT(U1**2+V1**2)
+          U1=0.25 _d 0*(UWIND(I+1,J+1,bi,bj)+UWIND(I+1,J,bi,bj)
+     1      +UWIND(I,J+1,bi,bj)+UWIND(I,J,bi,bj))
+          V1=0.25 _d 0*(VWIND(I+1,J+1,bi,bj)+VWIND(I+1,J,bi,bj)
+     1      +VWIND(I,J+1,bi,bj)+VWIND(I,J,bi,bj))
+          SPEED_SQ = U1**2 + V1**2
+          IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN
+             UG(I,J)=SEAICE_EPS
+          ELSE
+             UG(I,J)=SQRT(SPEED_SQ)
+          ENDIF
          ENDDO
         ENDDO
 
@@ -82,7 +101,31 @@
         CALL BUDGET(UG, TMIX, HICE, FO, KOPEN, bi, bj)
 C NOW DO ICE
         KOPEN=1
+#ifdef SEAICE_MULTILEVEL
+        DO IT=1,7
+         DO J=1,sNy
+          DO I=1,sNx
+           RK=IT*1.0
+           HICEP(I,J)=(HICE(I,J)/7.0 _d 0)*((2.0 _d 0*RK)-1.0 _d 0)
+           TICE(I,J,bi,bj)=TICES(I,J,IT,bi,bj)
+          ENDDO
+         ENDDO
+         CALL BUDGET(UG, TICE, HICEP, FICE, KOPEN, bi, bj)
+         DO J=1,sNy
+          DO I=1,sNx
+           FICEP(I,J)=(FICE(I,J,bi,bj)/7.0 _d 0)+FICEP(I,J)
+           TICES(I,J,IT,bi,bj)=TICE(I,J,bi,bj)
+          ENDDO
+         ENDDO
+        ENDDO
+        DO J=1,sNy
+         DO I=1,sNx
+          FICE(I,J,bi,bj)=FICEP(I,J)
+         ENDDO
+        ENDDO
+#else  /* SEAICE_MULTILEVEL */
         CALL BUDGET(UG, TICE, HICE, FICE, KOPEN, bi, bj)
+#endif /* SEAICE_MULTILEVEL */
 
        ENDDO
       ENDDO