/[MITgcm]/MITgcm/model/src/calc_gs.F
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revision 1.13 by cnh, Fri Aug 21 12:29:55 1998 UTC revision 1.18 by adcroft, Tue May 18 18:01:12 1999 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2    
3  #include "CPP_EEOPTIONS.h"  #include "CPP_OPTIONS.h"
4    
5  CStartOfInterFace  CStartOfInterFace
6        SUBROUTINE CALC_GS(        SUBROUTINE CALC_GS(
# Line 8  CStartOfInterFace Line 8  CStartOfInterFace
8       I           xA,yA,uTrans,vTrans,rTrans,maskup,maskC,       I           xA,yA,uTrans,vTrans,rTrans,maskup,maskC,
9       I           K13,K23,KappaRS,KapGM,       I           K13,K23,KappaRS,KapGM,
10       U           af,df,fZon,fMer,fVerS,       U           af,df,fZon,fMer,fVerS,
11       I           myThid )       I           myCurrentTime, myThid )
12  C     /==========================================================\  C     /==========================================================\
13  C     | SUBROUTINE CALC_GS                                       |  C     | SUBROUTINE CALC_GS                                       |
14  C     | o Calculate the salt tendency terms.                     |  C     | o Calculate the salt tendency terms.                     |
# Line 43  C     == GLobal variables == Line 43  C     == GLobal variables ==
43  #include "PARAMS.h"  #include "PARAMS.h"
44  #include "GRID.h"  #include "GRID.h"
45  #include "FFIELDS.h"  #include "FFIELDS.h"
46    #ifdef ALLOW_KPP
47    #include "KPPMIX.h"
48    #endif
49    
50  C     == Routine arguments ==  C     == Routine arguments ==
51  C     fZon    - Work array for flux of temperature in the east-west  C     fZon    - Work array for flux of temperature in the east-west
# Line 57  C     xA      - Tracer cell face area no Line 60  C     xA      - Tracer cell face area no
60  C     yA      - Tracer cell face area normal to X  C     yA      - Tracer cell face area normal to X
61  C     uTrans  - Zonal volume transport through cell face  C     uTrans  - Zonal volume transport through cell face
62  C     vTrans  - Meridional volume transport through cell face  C     vTrans  - Meridional volume transport through cell face
63  C     wTrans  - Vertical volume transport through cell face  C     rTrans  - Vertical volume transport through cell face
64  C     af      - Advective flux component work array  C     af      - Advective flux component work array
65  C     df      - Diffusive flux component work array  C     df      - Diffusive flux component work array
66  C     bi, bj, iMin, iMax, jMin, jMax - Range of points for which calculation  C     bi, bj, iMin, iMax, jMin, jMax - Range of points for which calculation
# Line 73  C     myThid - Instance number for this Line 76  C     myThid - Instance number for this
76        _RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
77        _RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
78        _RS maskC (1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RS maskC (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
79        _RL K13   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nz)        _RL K13   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
80        _RL K23   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nz)        _RL K23   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
81        _RL KappaRS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nz)        _RL KappaRS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
82        _RL KapGM (1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL KapGM (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
83        _RL af    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL af    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
84        _RL df    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL df    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
85        INTEGER k,kUp,kDown,kM1        INTEGER k,kUp,kDown,kM1
86        INTEGER bi,bj,iMin,iMax,jMin,jMax        INTEGER bi,bj,iMin,iMax,jMin,jMax
87          _RL     myCurrentTime
88        INTEGER myThid        INTEGER myThid
89  CEndOfInterface  CEndOfInterface
90    
# Line 161  C--   Interpolate terms for Redi/GM sche Line 165  C--   Interpolate terms for Redi/GM sche
165        DO j=jMin,jMax        DO j=jMin,jMax
166         DO i=iMin,iMax         DO i=iMin,iMax
167          dSdx(i,j) = 0.5*(          dSdx(i,j) = 0.5*(
168       &   +0.5*(_maskW(i+1,j,k,bi,bj)*_recip_dxC(i+1,j,bi,bj)*       &   +0.5*(_maskW(i+1,j,k,bi,bj)
169         &         *_recip_dxC(i+1,j,bi,bj)*
170       &           (salt(i+1,j,k,bi,bj)-salt(i,j,k,bi,bj))       &           (salt(i+1,j,k,bi,bj)-salt(i,j,k,bi,bj))
171       &        +_maskW(i,j,k,bi,bj)*_recip_dxC(i,j,bi,bj)*       &        +_maskW(i,j,k,bi,bj)
172         &         *_recip_dxC(i,j,bi,bj)*
173       &           (salt(i,j,k,bi,bj)-salt(i-1,j,k,bi,bj)))       &           (salt(i,j,k,bi,bj)-salt(i-1,j,k,bi,bj)))
174       &   +0.5*(_maskW(i+1,j,km1,bi,bj)*_recip_dxC(i+1,j,bi,bj)*       &   +0.5*(_maskW(i+1,j,km1,bi,bj)
175         &         *_recip_dxC(i+1,j,bi,bj)*
176       &           (salt(i+1,j,km1,bi,bj)-salt(i,j,km1,bi,bj))       &           (salt(i+1,j,km1,bi,bj)-salt(i,j,km1,bi,bj))
177       &        +_maskW(i,j,km1,bi,bj)*_recip_dxC(i,j,bi,bj)*       &        +_maskW(i,j,km1,bi,bj)
178         &         *_recip_dxC(i,j,bi,bj)*
179       &           (salt(i,j,km1,bi,bj)-salt(i-1,j,km1,bi,bj)))       &           (salt(i,j,km1,bi,bj)-salt(i-1,j,km1,bi,bj)))
180       &       )       &       )
181         ENDDO         ENDDO
# Line 175  C--   Interpolate terms for Redi/GM sche Line 183  C--   Interpolate terms for Redi/GM sche
183        DO j=jMin,jMax        DO j=jMin,jMax
184         DO i=iMin,iMax         DO i=iMin,iMax
185          dSdy(i,j) = 0.5*(          dSdy(i,j) = 0.5*(
186       &   +0.5*(_maskS(i,j,k,bi,bj)*_recip_dyC(i,j,bi,bj)*       &   +0.5*(_maskS(i,j,k,bi,bj)
187         &         *_recip_dyC(i,j,bi,bj)*
188       &           (salt(i,j,k,bi,bj)-salt(i,j-1,k,bi,bj))       &           (salt(i,j,k,bi,bj)-salt(i,j-1,k,bi,bj))
189       &        +_maskS(i,j+1,k,bi,bj)*_recip_dyC(i,j+1,bi,bj)*       &        +_maskS(i,j+1,k,bi,bj)
190         &         *_recip_dyC(i,j+1,bi,bj)*
191       &           (salt(i,j+1,k,bi,bj)-salt(i,j,k,bi,bj)))       &           (salt(i,j+1,k,bi,bj)-salt(i,j,k,bi,bj)))
192       &   +0.5*(_maskS(i,j,km1,bi,bj)*_recip_dyC(i,j,bi,bj)*       &   +0.5*(_maskS(i,j,km1,bi,bj)
193         &         *_recip_dyC(i,j,bi,bj)*
194       &           (salt(i,j,km1,bi,bj)-salt(i,j-1,km1,bi,bj))       &           (salt(i,j,km1,bi,bj)-salt(i,j-1,km1,bi,bj))
195       &        +_maskS(i,j+1,km1,bi,bj)*_recip_dyC(i,j+1,bi,bj)*       &        +_maskS(i,j+1,km1,bi,bj)
196         &         *_recip_dyC(i,j+1,bi,bj)*
197       &           (salt(i,j+1,km1,bi,bj)-salt(i,j,km1,bi,bj)))       &           (salt(i,j+1,km1,bi,bj)-salt(i,j,km1,bi,bj)))
198       &       )       &       )
199         ENDDO         ENDDO
# Line 218  C           boundary condition. Line 230  C           boundary condition.
230          ENDDO          ENDDO
231         ENDDO         ENDDO
232        ENDIF        ENDIF
233    #ifdef ALLOW_KPP
234          IF (usingKPPmixing) THEN
235    C--   Add non local transport coefficient (ghat term) to right-hand-side
236    C     The nonlocal transport term is noNrero only for scalars in unstable
237    C     (convective) forcing conditions.
238           IF ( TOP_LAYER ) THEN
239            DO j=jMin,jMax
240             DO i=iMin,iMax
241              df(i,j) = df(i,j) - _rA(i,j,bi,bj) *
242         &              EmPmR(i,j,bi,bj) * delZ(1) *
243         &              ( KappaRS(i,j,k)   * KPPghat(i,j,k,bi,bj)   )
244             ENDDO
245            ENDDO
246           ELSE
247            DO j=jMin,jMax
248             DO i=iMin,iMax
249              df(i,j) = df(i,j) - _rA(i,j,bi,bj) *
250         &              EmPmR(i,j,bi,bj) * delZ(1) *
251         &              ( KappaRS(i,j,k)   * KPPghat(i,j,k,bi,bj)
252         &              - KappaRS(i,j,k-1) * KPPghat(i,j,k-1,bi,bj) )
253             ENDDO
254            ENDDO
255           ENDIF
256          ENDIF
257    #endif /* ALLOW_KPP */
258    
259  C     Net vertical flux  C     Net vertical flux
260        DO j=jMin,jMax        DO j=jMin,jMax
261         DO i=iMin,iMax         DO i=iMin,iMax
# Line 240  C           they are not algorithmically Line 278  C           they are not algorithmically
278  C           are not used.  C           are not used.
279        DO j=jMin,jMax        DO j=jMin,jMax
280         DO i=iMin,iMax         DO i=iMin,iMax
281  #define _recip_VolS(i,j,k,bi,bj) _recip_hFacC(i,j,k,bi,bj)*recip_dzF(k)/_rA(i,j,bi,bj)  #define _recip_VolS1(i,j,k,bi,bj) _recip_hFacC(i,j,k,bi,bj)*recip_drF(k)
282    #define _recip_VolS2(i,j,k,bi,bj) /_rA(i,j,bi,bj)
283          gS(i,j,k,bi,bj)=          gS(i,j,k,bi,bj)=
284       &   -_recip_VolS(i,j,k,bi,bj)       &   -_recip_VolS1(i,j,k,bi,bj)
285         &    _recip_VolS2(i,j,k,bi,bj)
286       &   *(       &   *(
287       &    +( fZon(i+1,j)-fZon(i,j) )       &    +( fZon(i+1,j)-fZon(i,j) )
288       &    +( fMer(i,j+1)-fMer(i,j) )       &    +( fMer(i,j+1)-fMer(i,j) )
# Line 251  C           are not used. Line 291  C           are not used.
291         ENDDO         ENDDO
292        ENDDO        ENDDO
293    
294  C--   External P-E forcing term(s)  C--   External forcing term(s)
295  C     o Surface relaxation term        CALL EXTERNAL_FORCING_S(
296        IF ( TOP_LAYER ) THEN       I     iMin,iMax,jMin,jMax,bi,bj,k,
297         DO j=jMin,jMax       I     maskC,
298          DO i=iMin,iMax       I     myCurrentTime,myThid)
299           gS(i,j,k,bi,bj)=gS(i,j,k,bi,bj)  
300       &   +maskC(i,j)*(  #ifdef INCLUDE_LAT_CIRC_FFT_FILTER_CODE
301       &   -lambdaSaltClimRelax*(salt(i,j,k,bi,bj)-SSS(i,j,bi,bj))  C--
302       &   +EmPmR(i,j,bi,bj) )        CALL FILTER_LATCIRCS_FFT_APPLY( gS, 1, sNy, k, k, bi, bj, 1, myThid)
303          ENDDO  #endif
        ENDDO  
       ENDIF  
   
304    
305        RETURN        RETURN
306        END        END
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