/[MITgcm]/MITgcm/model/src/calc_gs.F
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revision 1.46 by jmc, Tue Mar 7 15:28:02 2006 UTC revision 1.47 by jmc, Sun Jun 18 23:22:43 2006 UTC
# Line 7  C $Name$ Line 7  C $Name$
7  CBOP  CBOP
8  C     !ROUTINE: CALC_GS  C     !ROUTINE: CALC_GS
9  C     !INTERFACE:  C     !INTERFACE:
10        SUBROUTINE CALC_GS(        SUBROUTINE CALC_GS(
11       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
12       I           xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp,       I           xA, yA, maskUp, uFld, vFld, wFld,
13         I           uTrans, vTrans, rTrans, rTransKp1,
14       I           KappaRS,       I           KappaRS,
15       U           fVerS,       U           fVerS,
16       I           myTime,myIter,myThid )       I           myTime,myIter,myThid )
17  C     !DESCRIPTION: \bv  C     !DESCRIPTION: \bv
18  C     *==========================================================*  C     *==========================================================*
19  C     | SUBROUTINE CALC_GS                                          C     | SUBROUTINE CALC_GS
20  C     | o Calculate the salt tendency terms.                        C     | o Calculate the salt tendency terms.
21  C     *==========================================================*  C     *==========================================================*
22  C     | A procedure called EXTERNAL_FORCING_S is called from        C     | A procedure called EXTERNAL_FORCING_S is called from
23  C     | here. These procedures can be used to add per problem      C     | here. These procedures can be used to add per problem
24  C     | E-P  flux source terms.                                    C     | E-P  flux source terms.
25  C     | Note: Although it is slightly counter-intuitive the        C     | Note: Although it is slightly counter-intuitive the
26  C     |       EXTERNAL_FORCING routine is not the place to put      C     |       EXTERNAL_FORCING routine is not the place to put
27  C     |       file I/O. Instead files that are required to          C     |       file I/O. Instead files that are required to
28  C     |       calculate the external source terms are generally    C     |       calculate the external source terms are generally
29  C     |       read during the model main loop. This makes the      C     |       read during the model main loop. This makes the
30  C     |       logisitics of multi-processing simpler and also      C     |       logisitics of multi-processing simpler and also
31  C     |       makes the adjoint generation simpler. It also        C     |       makes the adjoint generation simpler. It also
32  C     |       allows for I/O to overlap computation where that      C     |       allows for I/O to overlap computation where that
33  C     |       is supported by hardware.                            C     |       is supported by hardware.
34  C     | Aside from the problem specific term the code here          C     | Aside from the problem specific term the code here
35  C     | forms the tendency terms due to advection and mixing        C     | forms the tendency terms due to advection and mixing
36  C     | The baseline implementation here uses a centered            C     | The baseline implementation here uses a centered
37  C     | difference form for the advection term and a tensorial      C     | difference form for the advection term and a tensorial
38  C     | divergence of a flux form for the diffusive term. The      C     | divergence of a flux form for the diffusive term. The
39  C     | diffusive term is formulated so that isopycnal mixing and  C     | diffusive term is formulated so that isopycnal mixing and
40  C     | GM-style subgrid-scale terms can be incorporated b simply  C     | GM-style subgrid-scale terms can be incorporated b simply
41  C     | setting the diffusion tensor terms appropriately.          C     | setting the diffusion tensor terms appropriately.
42  C     *==========================================================*  C     *==========================================================*
43  C     \ev  C     \ev
44    
# Line 58  C     == GLobal variables == Line 59  C     == GLobal variables ==
59    
60  C     !INPUT/OUTPUT PARAMETERS:  C     !INPUT/OUTPUT PARAMETERS:
61  C     == Routine arguments ==  C     == Routine arguments ==
62  C     fVerS   :: Flux of salt (S) in the vertical  C     bi, bj,   :: tile indices
63  C               direction at the upper(U) and lower(D) faces of a cell.  C     iMin,iMax, jMin,jMax :: Range of points for which calculation
64  C     maskUp  :: Land mask used to denote base of the domain.  C                                       results will be set.
65  C     xA      :: Tracer cell face area normal to X  C     k         :: vertical index
66  C     yA      :: Tracer cell face area normal to X  C     kM1       :: =k-1 for k>1, =1 for k=1
67  C     uTrans  :: Zonal volume transport through cell face  C     kUp       :: index into 2 1/2D array, toggles between 1|2
68  C     vTrans  :: Meridional volume transport through cell face  C     kDown     :: index into 2 1/2D array, toggles between 2|1
69  C     rTrans  ::   Vertical volume transport at interface k  C     xA        :: Tracer cell face area normal to X
70    C     yA        :: Tracer cell face area normal to X
71    C     maskUp    :: Land mask used to denote base of the domain.
72    C     uFld,vFld :: Local copy of horizontal velocity field
73    C     wFld      :: Local copy of vertical velocity field
74    C     uTrans    :: Zonal volume transport through cell face
75    C     vTrans    :: Meridional volume transport through cell face
76    C     rTrans    ::   Vertical volume transport at interface k
77  C     rTransKp1 :: Vertical volume transport at inteface k+1  C     rTransKp1 :: Vertical volume transport at inteface k+1
78  C     bi, bj, iMin, iMax, jMin, jMax :: Range of points for which calculation  C     KappaRS   :: Vertical diffusion for Salinity
79  C                                      results will be set.  C     fVerS     :: Flux of salt (S) in the vertical direction
80  C     myThid :: Instance number for this innvocation of CALC_GT  C                  at the upper(U) and lower(D) faces of a cell.
81        _RL fVerS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)  C     myTime    :: current time
82        _RS xA    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)  C     myIter    :: current iteration number
83        _RS yA    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)  C     myThid    :: my Thread Id. number
84        _RL uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)  
85        _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        INTEGER bi,bj,iMin,iMax,jMin,jMax
86        _RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        INTEGER k,kUp,kDown,kM1
87          _RS xA     (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
88          _RS yA     (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
89          _RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
90          _RL uFld   (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
91          _RL vFld   (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
92          _RL wFld   (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
93          _RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
94          _RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
95          _RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
96        _RL rTransKp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL rTransKp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
       _RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)  
97        _RL KappaRS(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL KappaRS(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
98        INTEGER k,kUp,kDown,kM1        _RL fVerS  (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
       INTEGER bi,bj,iMin,iMax,jMin,jMax  
99        _RL     myTime        _RL     myTime
100        INTEGER myIter        INTEGER myIter
101        INTEGER myThid        INTEGER myThid
   
102  CEOP  CEOP
103    
104  #ifdef ALLOW_GENERIC_ADVDIFF  #ifdef ALLOW_GENERIC_ADVDIFF
# Line 132  C---+----1----+----2----+----3----+----4 Line 146  C---+----1----+----2----+----3----+----4
146          m2 = 1 + MOD( iterNb ,2)          m2 = 1 + MOD( iterNb ,2)
147          CALL GAD_CALC_RHS(          CALL GAD_CALC_RHS(
148       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
149       I           xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp,       I           xA, yA, maskUp, uFld, vFld, wFld,
150       I           uVel, vVel, wVel,       I           uTrans, vTrans, rTrans, rTransKp1,
151       I           diffKhS, diffK4S, KappaRS,       I           diffKhS, diffK4S, KappaRS,
152       I           gsNm(1-Olx,1-Oly,1,1,1,m2), salt,       I           gsNm(1-Olx,1-Oly,1,1,1,m2), salt,
153       I           GAD_SALINITY, saltAdvScheme, saltVertAdvScheme,       I           GAD_SALINITY, saltAdvScheme, saltVertAdvScheme,
# Line 143  C---+----1----+----2----+----3----+----4 Line 157  C---+----1----+----2----+----3----+----4
157  #else /* ALLOW_ADAMSBASHFORTH_3 */  #else /* ALLOW_ADAMSBASHFORTH_3 */
158          CALL GAD_CALC_RHS(          CALL GAD_CALC_RHS(
159       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
160       I           xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp,       I           xA, yA, maskUp, uFld, vFld, wFld,
161       I           uVel, vVel, wVel,       I           uTrans, vTrans, rTrans, rTransKp1,
162       I           diffKhS, diffK4S, KappaRS, gsNm1, salt,       I           diffKhS, diffK4S, KappaRS, gsNm1, salt,
163       I           GAD_SALINITY, saltAdvScheme, saltVertAdvScheme,       I           GAD_SALINITY, saltAdvScheme, saltVertAdvScheme,
164       I           calcAdvection, saltImplVertAdv, AdamsBashforth_S,       I           calcAdvection, saltImplVertAdv, AdamsBashforth_S,
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