| 1 |
C $Header: /u/gcmpack/MITgcm/model/src/calc_gs.F,v 1.35 2004/01/07 21:18:01 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "CPP_OPTIONS.h" |
| 5 |
|
| 6 |
CBOP |
| 7 |
C !ROUTINE: CALC_GS |
| 8 |
C !INTERFACE: |
| 9 |
SUBROUTINE CALC_GS( |
| 10 |
I bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown, |
| 11 |
I xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp, |
| 12 |
I KappaRS, |
| 13 |
U fVerS, |
| 14 |
I myTime,myIter,myThid ) |
| 15 |
C !DESCRIPTION: \bv |
| 16 |
C *==========================================================* |
| 17 |
C | SUBROUTINE CALC_GS |
| 18 |
C | o Calculate the salt tendency terms. |
| 19 |
C *==========================================================* |
| 20 |
C | A procedure called EXTERNAL_FORCING_S is called from |
| 21 |
C | here. These procedures can be used to add per problem |
| 22 |
C | E-P flux source terms. |
| 23 |
C | Note: Although it is slightly counter-intuitive the |
| 24 |
C | EXTERNAL_FORCING routine is not the place to put |
| 25 |
C | file I/O. Instead files that are required to |
| 26 |
C | calculate the external source terms are generally |
| 27 |
C | read during the model main loop. This makes the |
| 28 |
C | logisitics of multi-processing simpler and also |
| 29 |
C | makes the adjoint generation simpler. It also |
| 30 |
C | allows for I/O to overlap computation where that |
| 31 |
C | is supported by hardware. |
| 32 |
C | Aside from the problem specific term the code here |
| 33 |
C | forms the tendency terms due to advection and mixing |
| 34 |
C | The baseline implementation here uses a centered |
| 35 |
C | difference form for the advection term and a tensorial |
| 36 |
C | divergence of a flux form for the diffusive term. The |
| 37 |
C | diffusive term is formulated so that isopycnal mixing and |
| 38 |
C | GM-style subgrid-scale terms can be incorporated b simply |
| 39 |
C | setting the diffusion tensor terms appropriately. |
| 40 |
C *==========================================================* |
| 41 |
C \ev |
| 42 |
|
| 43 |
C !USES: |
| 44 |
IMPLICIT NONE |
| 45 |
C == GLobal variables == |
| 46 |
#include "SIZE.h" |
| 47 |
#include "DYNVARS.h" |
| 48 |
#include "EEPARAMS.h" |
| 49 |
#include "PARAMS.h" |
| 50 |
#include "GAD.h" |
| 51 |
|
| 52 |
C !INPUT/OUTPUT PARAMETERS: |
| 53 |
C == Routine arguments == |
| 54 |
C fVerS :: Flux of salt (S) in the vertical |
| 55 |
C direction at the upper(U) and lower(D) faces of a cell. |
| 56 |
C maskUp :: Land mask used to denote base of the domain. |
| 57 |
C xA :: Tracer cell face area normal to X |
| 58 |
C yA :: Tracer cell face area normal to X |
| 59 |
C uTrans :: Zonal volume transport through cell face |
| 60 |
C vTrans :: Meridional volume transport through cell face |
| 61 |
C rTrans :: Vertical volume transport at interface k |
| 62 |
C rTransKp1 :: Vertical volume transport at inteface k+1 |
| 63 |
C bi, bj, iMin, iMax, jMin, jMax :: Range of points for which calculation |
| 64 |
C results will be set. |
| 65 |
C myThid :: Instance number for this innvocation of CALC_GT |
| 66 |
_RL fVerS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) |
| 67 |
_RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 68 |
_RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 69 |
_RL uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 70 |
_RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 71 |
_RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 72 |
_RL rTransKp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 73 |
_RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 74 |
_RL KappaRS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
| 75 |
INTEGER k,kUp,kDown,kM1 |
| 76 |
INTEGER bi,bj,iMin,iMax,jMin,jMax |
| 77 |
_RL myTime |
| 78 |
INTEGER myIter |
| 79 |
INTEGER myThid |
| 80 |
|
| 81 |
CEOP |
| 82 |
|
| 83 |
C === Local variables === |
| 84 |
LOGICAL calcAdvection |
| 85 |
|
| 86 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 87 |
C-- only the kUp part of fverS is set in this subroutine |
| 88 |
C-- the kDown is still required |
| 89 |
fVerS(1,1,kDown) = fVerS(1,1,kDown) |
| 90 |
#endif |
| 91 |
|
| 92 |
calcAdvection = saltAdvection .AND. .NOT.saltMultiDimAdvec |
| 93 |
CALL GAD_CALC_RHS( |
| 94 |
I bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown, |
| 95 |
I xA,yA,uTrans,vTrans,rTrans,rTransKp1,maskUp, |
| 96 |
I uVel, vVel, wVel, |
| 97 |
I diffKhS, diffK4S, KappaRS, Salt, |
| 98 |
I GAD_SALINITY, saltAdvScheme, saltVertAdvScheme, |
| 99 |
I calcAdvection, saltImplVertAdv, |
| 100 |
U fVerS, gS, |
| 101 |
I myThid ) |
| 102 |
|
| 103 |
C-- External salinity forcing term(s) inside Adams-Bashforth: |
| 104 |
IF ( saltForcing .AND. forcing_In_AB ) |
| 105 |
& CALL EXTERNAL_FORCING_S( |
| 106 |
I iMin,iMax,jMin,jMax,bi,bj,k, |
| 107 |
I myTime,myThid) |
| 108 |
|
| 109 |
IF ( saltAdamsBashforth ) THEN |
| 110 |
CALL ADAMS_BASHFORTH2( |
| 111 |
I bi, bj, K, |
| 112 |
U gS, gSnm1, |
| 113 |
I myIter, myThid ) |
| 114 |
ENDIF |
| 115 |
|
| 116 |
C-- External salinity forcing term(s) outside Adams-Bashforth: |
| 117 |
IF ( saltForcing .AND. .NOT.forcing_In_AB ) |
| 118 |
& CALL EXTERNAL_FORCING_S( |
| 119 |
I iMin,iMax,jMin,jMax,bi,bj,k, |
| 120 |
I myTime,myThid) |
| 121 |
|
| 122 |
#ifdef NONLIN_FRSURF |
| 123 |
IF (nonlinFreeSurf.GT.0) THEN |
| 124 |
CALL FREESURF_RESCALE_G( |
| 125 |
I bi, bj, K, |
| 126 |
U gS, |
| 127 |
I myThid ) |
| 128 |
IF ( saltAdamsBashforth ) |
| 129 |
& CALL FREESURF_RESCALE_G( |
| 130 |
I bi, bj, K, |
| 131 |
U gSnm1, |
| 132 |
I myThid ) |
| 133 |
ENDIF |
| 134 |
#endif /* NONLIN_FRSURF */ |
| 135 |
|
| 136 |
RETURN |
| 137 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph