pkg/thsice/thsice_main.F

C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_main.F,v 1.3 2004/07/08 15:56:36 jmc Exp $
C $Name:  $

#include "THSICE_OPTIONS.h"
 
CBOP
C     !ROUTINE: THSICE_MAIN
C     !INTERFACE:
      SUBROUTINE THSICE_MAIN( 
     I                        myTime, myIter, myThid )
C     !DESCRIPTION: \bv
C     *==========================================================*
C     | S/R  THSICE_MAIN             
C     | o Therm_SeaIce main routine. 
C     |   step forward Thermodynamic_SeaIce variables and modify
C     |    ocean surface forcing accordingly.
C     *==========================================================*

C     !USES:
      IMPLICIT NONE

C     === Global variables ===
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "SURFACE.h"
#include "DYNVARS.h"
#include "FFIELDS.h"
#include "THSICE_PARAMS.h"
#include "THSICE_VARS.h"
#ifdef ALLOW_BULK_FORCE
#include "BULKF.h"
#endif
 
C     !INPUT/OUTPUT PARAMETERS:
C     === Routine arguments ===
C     myIter :: iteration counter for this thread
C     myTime :: time counter for this thread
C     myThid :: thread number for this instance of the routine.
      _RL  myTime
      INTEGER myIter
      INTEGER myThid
CEOP

#ifdef ALLOW_THSICE
C     !LOCAL VARIABLES:
C     === Local variables ===
      INTEGER i,j
      INTEGER bi,bj
      INTEGER iMin, iMax
      INTEGER jMin, jMax
      _RL prcAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL evpAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL flxSW (1-OLx:sNx+OLx,1-OLy:sNy+OLy)

      _RL tauFac

C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|

      IF ( stressReduction.GT. 0. _d 0 ) THEN
       iMin = 1-Olx
       iMax = sNx+Olx-1
       jMin = 1-Oly
       jMax = sNy+Oly-1
      ELSE
       iMin = 1
       iMax = sNx
       jMin = 1
       jMax = sNy
      ENDIF

      DO bj=myByLo(myThid),myByHi(myThid)
       DO bi=myBxLo(myThid),myBxHi(myThid)

C--     Mixed layer thickness: take the 1rst layer
#ifdef NONLIN_FRSURF
        IF ( staggerTimeStep .AND. nonlinFreeSurf.GT.0 ) THEN
         IF ( select_rStar.GT.0 ) THEN
          DO j = jMin, jMax
           DO i = iMin, iMax
             hOceMxL(i,j,bi,bj) = drF(1)*h0FacC(i,j,1,bi,bj)
     &                                  *rStarFacC(i,j,bi,bj) 
           ENDDO
          ENDDO
         ELSE
          DO j = jMin, jMax
           DO i = iMin, iMax
            IF ( ksurfC(i,j,bi,bj).EQ.1 ) THEN
             hOceMxL(i,j,bi,bj) = drF(1)*hFac_surfC(i,j,bi,bj)
            ELSE
             hOceMxL(i,j,bi,bj) = drF(1)*hfacC(i,j,1,bi,bj)
            ENDIF
           ENDDO
          ENDDO
         ENDIF
        ELSE
#else /* ndef NONLIN_FRSURF */
        IF (.TRUE.) THEN
#endif /* NONLIN_FRSURF */
          DO j = jMin, jMax
           DO i = iMin, iMax
             hOceMxL(i,j,bi,bj) = drF(1)*hfacC(i,j,1,bi,bj)
           ENDDO
          ENDDO
        ENDIF

         DO j = jMin, jMax
          DO i = iMin, iMax
           tOceMxL(i,j,bi,bj) = theta(i,j,1,bi,bj)
           sOceMxL(i,j,bi,bj) = salt (i,j,1,bi,bj)
           v2ocMxL(i,j,bi,bj) = 
     &              ( uvel(i,j,1,bi,bj)*uvel(i,j,1,bi,bj)
     &              + uvel(i+1,j,1,bi,bj)*uvel(i+1,j,1,bi,bj)
     &              + vvel(i,j+1,1,bi,bj)*vvel(i,j+1,1,bi,bj)
     &              + vvel(i,j,1,bi,bj)*vvel(i,j,1,bi,bj)
     &              )*0.5 _d 0
           prcAtm(i,j) = 0.
           evpAtm(i,j) = 0.
           flxSW (i,j) = 0.
           snowPrc(i,j,bi,bj) = 0. _d 0
           siceAlb(i,j,bi,bj) = 0. _d 0
#ifdef ALLOW_BULK_FORCE
           prcAtm(i,j) = ( rain(i,j,bi,bj)+runoff(i,j,bi,bj) )*rhofw
           flxSW (i,j) = solar(i,j,bi,bj)
           IF ( iceMask(i,j,bi,bj).GT.0. _d 0
     &       .AND. Tair(i,j,bi,bj).LE.Tf0kel )  THEN
             snowPrc(i,j,bi,bj) = rain(i,j,bi,bj)*rhofw
           ENDIF
#endif
          ENDDO
         ENDDO

         CALL THSICE_STEP_FWD( 
     I                     bi, bj, iMin, iMax, jMin, jMax, 
     I                     prcAtm, 
     U                     evpAtm, flxSW,
     I                     myTime, myIter, myThid )

         CALL THSICE_AVE( 
     I                   evpAtm, flxSW, 
     I                   bi,bj, myTime, myIter, myThid )

c      ENDDO
c     ENDDO

c       IF ( .FALSE. ) THEN
        IF ( stressReduction.GT. 0. _d 0 ) THEN
         DO j = jMin, jMax
          DO i = iMin+1,iMax
            tauFac = stressReduction
     &             *(iceMask(i-1,j,bi,bj)+iceMask(i,j,bi,bj))*0.5 _d 0
            fu(i,j,bi,bj) = (1. _d 0 - tauFac)*fu(i,j,bi,bj)
          ENDDO
         ENDDO
         DO j = jMin+1, jMax
          DO i = iMin, iMax
            tauFac = stressReduction
     &             *(iceMask(i,j-1,bi,bj)+iceMask(i,j,bi,bj))*0.5 _d 0
            fv(i,j,bi,bj) = (1. _d 0 - tauFac)*fv(i,j,bi,bj)
          ENDDO
         ENDDO
        ENDIF

C--  end bi,bj loop
       ENDDO
      ENDDO

C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
#endif  /*ALLOW_THSICE*/

      RETURN
      END
1	jmc	1.4	C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_main.F,v 1.3 2004/07/08 15:56:36 jmc Exp $
2	jmc	1.1	C $Name: $
3
4			#include "THSICE_OPTIONS.h"
5
6	jmc	1.2	CBOP
7	jmc	1.1	C !ROUTINE: THSICE_MAIN
8			C !INTERFACE:
9			SUBROUTINE THSICE_MAIN(
10			I myTime, myIter, myThid )
11	jmc	1.2	C !DESCRIPTION: \bv
12	jmc	1.1	C ==========================================================
13	jmc	1.2	C \| S/R THSICE_MAIN
14	jmc	1.1	C \| o Therm_SeaIce main routine.
15			C \| step forward Thermodynamic_SeaIce variables and modify
16			C \| ocean surface forcing accordingly.
17			C ==========================================================
18
19			C !USES:
20			IMPLICIT NONE
21	jmc	1.2
22	jmc	1.1	C === Global variables ===
23			#include "SIZE.h"
24			#include "EEPARAMS.h"
25			#include "PARAMS.h"
26	jmc	1.2	#include "GRID.h"
27	jmc	1.3	#include "SURFACE.h"
28	jmc	1.2	#include "DYNVARS.h"
29	jmc	1.1	#include "FFIELDS.h"
30			#include "THSICE_PARAMS.h"
31	jmc	1.2	#include "THSICE_VARS.h"
32			#ifdef ALLOW_BULK_FORCE
33			#include "BULKF.h"
34			#endif
35	jmc	1.1
36			C !INPUT/OUTPUT PARAMETERS:
37			C === Routine arguments ===
38			C myIter :: iteration counter for this thread
39			C myTime :: time counter for this thread
40			C myThid :: thread number for this instance of the routine.
41			_RL myTime
42			INTEGER myIter
43			INTEGER myThid
44	jmc	1.2	CEOP
45	jmc	1.1
46			#ifdef ALLOW_THSICE
47			C !LOCAL VARIABLES:
48			C === Local variables ===
49			INTEGER i,j
50			INTEGER bi,bj
51			INTEGER iMin, iMax
52			INTEGER jMin, jMax
53	jmc	1.2	_RL prcAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
54			_RL evpAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
55			_RL flxSW (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
56	jmc	1.1
57			_RL tauFac
58
59			C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-\|--+----\|
60
61			IF ( stressReduction.GT. 0. _d 0 ) THEN
62			iMin = 1-Olx
63			iMax = sNx+Olx-1
64			jMin = 1-Oly
65			jMax = sNy+Oly-1
66			ELSE
67			iMin = 1
68			iMax = sNx
69			jMin = 1
70			jMax = sNy
71			ENDIF
72
73			DO bj=myByLo(myThid),myByHi(myThid)
74			DO bi=myBxLo(myThid),myBxHi(myThid)
75	jmc	1.2
76	jmc	1.3	C-- Mixed layer thickness: take the 1rst layer
77			#ifdef NONLIN_FRSURF
78			IF ( staggerTimeStep .AND. nonlinFreeSurf.GT.0 ) THEN
79			IF ( select_rStar.GT.0 ) THEN
80			DO j = jMin, jMax
81			DO i = iMin, iMax
82			hOceMxL(i,j,bi,bj) = drF(1)*h0FacC(i,j,1,bi,bj)
83			& *rStarFacC(i,j,bi,bj)
84			ENDDO
85			ENDDO
86			ELSE
87			DO j = jMin, jMax
88			DO i = iMin, iMax
89			IF ( ksurfC(i,j,bi,bj).EQ.1 ) THEN
90			hOceMxL(i,j,bi,bj) = drF(1)*hFac_surfC(i,j,bi,bj)
91			ELSE
92			hOceMxL(i,j,bi,bj) = drF(1)*hfacC(i,j,1,bi,bj)
93			ENDIF
94			ENDDO
95			ENDDO
96			ENDIF
97			ELSE
98			#else /* ndef NONLIN_FRSURF */
99			IF (.TRUE.) THEN
100			#endif /* NONLIN_FRSURF */
101			DO j = jMin, jMax
102			DO i = iMin, iMax
103			hOceMxL(i,j,bi,bj) = drF(1)*hfacC(i,j,1,bi,bj)
104			ENDDO
105			ENDDO
106			ENDIF
107
108	jmc	1.2	DO j = jMin, jMax
109			DO i = iMin, iMax
110			tOceMxL(i,j,bi,bj) = theta(i,j,1,bi,bj)
111			sOceMxL(i,j,bi,bj) = salt (i,j,1,bi,bj)
112			v2ocMxL(i,j,bi,bj) =
113			& ( uvel(i,j,1,bi,bj)*uvel(i,j,1,bi,bj)
114			& + uvel(i+1,j,1,bi,bj)*uvel(i+1,j,1,bi,bj)
115			& + vvel(i,j+1,1,bi,bj)*vvel(i,j+1,1,bi,bj)
116			& + vvel(i,j,1,bi,bj)*vvel(i,j,1,bi,bj)
117			& )*0.5 _d 0
118			prcAtm(i,j) = 0.
119			evpAtm(i,j) = 0.
120			flxSW (i,j) = 0.
121			snowPrc(i,j,bi,bj) = 0. _d 0
122	jmc	1.4	siceAlb(i,j,bi,bj) = 0. _d 0
123	jmc	1.2	#ifdef ALLOW_BULK_FORCE
124			prcAtm(i,j) = ( rain(i,j,bi,bj)+runoff(i,j,bi,bj) )*rhofw
125			flxSW (i,j) = solar(i,j,bi,bj)
126			IF ( iceMask(i,j,bi,bj).GT.0. _d 0
127			& .AND. Tair(i,j,bi,bj).LE.Tf0kel ) THEN
128			snowPrc(i,j,bi,bj) = rain(i,j,bi,bj)*rhofw
129			ENDIF
130			#endif
131			ENDDO
132			ENDDO
133
134	jmc	1.1	CALL THSICE_STEP_FWD(
135			I bi, bj, iMin, iMax, jMin, jMax,
136	jmc	1.2	I prcAtm,
137			U evpAtm, flxSW,
138	jmc	1.1	I myTime, myIter, myThid )
139	jmc	1.2
140			CALL THSICE_AVE(
141			I evpAtm, flxSW,
142			I bi,bj, myTime, myIter, myThid )
143
144	jmc	1.1	c ENDDO
145			c ENDDO
146
147			c IF ( .FALSE. ) THEN
148			IF ( stressReduction.GT. 0. _d 0 ) THEN
149			DO j = jMin, jMax
150			DO i = iMin+1,iMax
151			tauFac = stressReduction
152			& (iceMask(i-1,j,bi,bj)+iceMask(i,j,bi,bj))0.5 _d 0
153			fu(i,j,bi,bj) = (1. _d 0 - tauFac)*fu(i,j,bi,bj)
154			ENDDO
155			ENDDO
156			DO j = jMin+1, jMax
157			DO i = iMin, iMax
158			tauFac = stressReduction
159			& (iceMask(i,j-1,bi,bj)+iceMask(i,j,bi,bj))0.5 _d 0
160			fv(i,j,bi,bj) = (1. _d 0 - tauFac)*fv(i,j,bi,bj)
161			ENDDO
162			ENDDO
163			ENDIF
164
165			C-- end bi,bj loop
166			ENDDO
167			ENDDO
168
169			C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-\|--+----\|
170			#endif /ALLOW_THSICE/
171
172			RETURN
173			END