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salt_integrate.F
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salt_integrate.F
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#include "PACKAGES_CONFIG.h"
#include "CPP_OPTIONS.h"
#ifdef ALLOW_AUTODIFF
# include "AUTODIFF_OPTIONS.h"
#endif
#ifdef ALLOW_GENERIC_ADVDIFF
# include "GAD_OPTIONS.h"
#endif
CBOP
C !ROUTINE: SALT_INTEGRATE
C !INTERFACE:
SUBROUTINE SALT_INTEGRATE(
I bi, bj, recip_hFac,
I uFld, vFld, wFld,
U KappaRk,
I myTime, myIter, myThid )
C !DESCRIPTION: \bv
C *==========================================================*
C | SUBROUTINE SALT_INTEGRATE
C | o Calculate tendency for salinity and integrates
C | forward in time. The salinity array is updated here
C | while adjustments (filters, conv.adjustment) are applied
C | later, in S/R TRACERS_CORRECTION_STEP.
C *==========================================================*
C | A procedure called APPLY_FORCING_S is called from
C | here. These procedures can be used to add per problem
C | E-P flux source terms.
C | Note: Although it is slightly counter-intuitive the
C | EXTERNAL_FORCING routine is not the place to put
C | file I/O. Instead files that are required to
C | calculate the external source terms are generally
C | read during the model main loop. This makes the
C | logistics of multi-processing simpler and also
C | makes the adjoint generation simpler. It also
C | allows for I/O to overlap computation where that
C | is supported by hardware.
C | Aside from the problem specific term the code here
C | forms the tendency terms due to advection and mixing
C | The baseline implementation here uses a centered
C | difference form for the advection term and a tensorial
C | divergence of a flux form for the diffusive term. The
C | diffusive term is formulated so that isopycnal mixing
C | and GM-style subgrid-scale terms can be incorporated by
C | simply setting the diffusion tensor terms appropriately.
C *==========================================================*
C \ev
C !USES:
IMPLICIT NONE
C == GLobal variables ==
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "DYNVARS.h"
#include "RESTART.h"
#ifdef ALLOW_GENERIC_ADVDIFF
# include "GAD.h"
# include "GAD_SOM_VARS.h"
#endif
#ifdef ALLOW_AUTODIFF_TAMC
# include "tamc.h"
#endif
C !INPUT/OUTPUT PARAMETERS:
C == Routine arguments ==
C bi, bj, :: tile indices
C recip_hFac :: reciprocal of cell open-depth factor (@ next iter)
C uFld,vFld :: Local copy of horizontal velocity field
C wFld :: Local copy of vertical velocity field
C KappaRk :: Vertical diffusion for Salinity
C myTime :: current time
C myIter :: current iteration number
C myThid :: my Thread Id. number
INTEGER bi, bj
_RS recip_hFac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL uFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL vFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL wFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL KappaRk (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL myTime
INTEGER myIter
INTEGER myThid
CEOP
#ifdef ALLOW_GENERIC_ADVDIFF
#ifdef ALLOW_DIAGNOSTICS
C !FUNCTIONS:
LOGICAL DIAGNOSTICS_IS_ON
EXTERNAL DIAGNOSTICS_IS_ON
#endif /* ALLOW_DIAGNOSTICS */
C !LOCAL VARIABLES:
C iMin, iMax :: 1rst index loop range
C jMin, jMax :: 2nd index loop range
C k :: vertical index
C kM1 :: =k-1 for k>1, =1 for k=1
C kUp :: index into 2 1/2D array, toggles between 1|2
C kDown :: index into 2 1/2D array, toggles between 2|1
C xA :: Tracer cell face area normal to X
C yA :: Tracer cell face area normal to X
C maskUp :: Land/water mask for Wvel points (interface k)
C uTrans :: Zonal volume transport through cell face
C vTrans :: Meridional volume transport through cell face
C rTrans :: Vertical volume transport at interface k
C rTransKp :: Vertical volume transport at inteface k+1
C fZon :: Flux of salt (S) in the zonal direction
C fMer :: Flux of salt (S) in the meridional direction
C fVer :: Flux of salt (S) in the vertical direction
C at the upper(U) and lower(D) faces of a cell.
C gS_loc :: Salinity tendency (local to this S/R)
C gsForc :: Salinity forcing tendency
C gs_AB :: Adams-Bashforth salinity tendency increment
INTEGER iMin, iMax, jMin, jMax
INTEGER i, j, k
INTEGER kUp, kDown, kM1
_RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL rTransKp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL fZon (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL fMer (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL fVer (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2)
_RL gS_loc (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL gsForc (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL gs_AB (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
#ifdef ALLOW_DIAGNOSTICS
LOGICAL diagForcing, diagAB_tend
#endif
LOGICAL calcAdvection
INTEGER iterNb
#ifdef ALLOW_ADAMSBASHFORTH_3
INTEGER m2
#endif
#ifdef ALLOW_AUTODIFF_TAMC
C tkey :: tape key (tile dependent)
C kkey :: tape key (level and tile dependent)
INTEGER tkey, kkey
#endif
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
iterNb = myIter
IF (staggerTimeStep) iterNb = myIter - 1
C- Loop ranges for daughter routines
c iMin = 1
c iMax = sNx
c jMin = 1
c jMax = sNy
C Regarding model dynamics, only needs to get correct tracer tendency
C (gS_loc) in tile interior (1:sNx,1:sNy);
C However, for some diagnostics, we may want to get valid tendency
C extended over 1 point in tile halo region (0:sNx+1,0:sNy=1).
iMin = 0
iMax = sNx+1
jMin = 0
jMax = sNy+1
#ifdef ALLOW_DIAGNOSTICS
diagForcing = .FALSE.
diagAB_tend = .FALSE.
IF ( useDiagnostics .AND. saltForcing )
& diagForcing = DIAGNOSTICS_IS_ON( 'gS_Forc ', myThid )
IF ( useDiagnostics .AND. AdamsBashforthGs )
& diagAB_tend = DIAGNOSTICS_IS_ON( 'AB_gS ', myThid )
#endif
#ifdef ALLOW_AUTODIFF_TAMC
tkey = bi + (bj-1)*nSx + (ikey_dynamics-1)*nSx*nSy
#endif /* ALLOW_AUTODIFF_TAMC */
C- Apply AB on S :
IF ( AdamsBashforth_S ) THEN
C compute S^n+1/2 (stored in gsNm) extrapolating S forward in time
#ifdef ALLOW_ADAMSBASHFORTH_3
c m1 = 1 + MOD(iterNb+1,2)
c m2 = 1 + MOD( iterNb ,2)
CALL ADAMS_BASHFORTH3(
I bi, bj, 0, Nr,
I salt(1-OLx,1-OLy,1,bi,bj),
U gsNm, gs_AB,
I saltStartAB, iterNb, myThid )
#else /* ALLOW_ADAMSBASHFORTH_3 */
CALL ADAMS_BASHFORTH2(
I bi, bj, 0, Nr,
I salt(1-OLx,1-OLy,1,bi,bj),
U gsNm1(1-OLx,1-OLy,1,bi,bj), gs_AB,
I saltStartAB, iterNb, myThid )
#endif /* ALLOW_ADAMSBASHFORTH_3 */
ENDIF
C- Tracer tendency needs to be set to zero (moved here from gad_calc_rhs):
DO k=1,Nr
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
gS_loc(i,j,k) = 0. _d 0
ENDDO
ENDDO
ENDDO
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
fVer(i,j,1) = 0. _d 0
fVer(i,j,2) = 0. _d 0
ENDDO
ENDDO
#ifdef ALLOW_AUTODIFF
DO k=1,Nr
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
kappaRk(i,j,k) = 0. _d 0
ENDDO
ENDDO
ENDDO
#endif /* ALLOW_AUTODIFF */
#ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE wFld(:,:,:) = comlev1_bibj, key=tkey, kind=isbyte
CADJ STORE salt(:,:,:,bi,bj) = comlev1_bibj, key=tkey, kind=isbyte
# ifdef ALLOW_ADAMSBASHFORTH_3
CADJ STORE gsNm(:,:,:,bi,bj,1) = comlev1_bibj, key=tkey, kind=isbyte
CADJ STORE gsNm(:,:,:,bi,bj,2) = comlev1_bibj, key=tkey, kind=isbyte
# else
CADJ STORE gsNm1(:,:,:,bi,bj) = comlev1_bibj, key=tkey, kind=isbyte
# endif
#endif /* ALLOW_AUTODIFF_TAMC */
#ifdef INCLUDE_CALC_DIFFUSIVITY_CALL
CALL CALC_3D_DIFFUSIVITY(
I bi, bj, iMin, iMax, jMin, jMax,
I GAD_SALINITY, useGMredi, useKPP,
O kappaRk,
I myThid )
# ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE kappaRk = comlev1_bibj, key = tkey, kind = isbyte
# endif
#endif /* INCLUDE_CALC_DIFFUSIVITY_CALL */
#ifndef DISABLE_MULTIDIM_ADVECTION
C-- Some advection schemes are better calculated using a multi-dimensional
C method in the absence of any other terms and, if used, is done here.
C
C The CPP flag DISABLE_MULTIDIM_ADVECTION is currently unset in GAD_OPTIONS.h
C The default is to use multi-dimensinal advection for non-linear advection
C schemes. However, for the sake of efficiency of the adjoint it is necessary
C to be able to exclude this scheme to avoid excessive storage and
C recomputation. It *is* differentiable, if you need it.
C Edit GAD_OPTIONS.h and #define DISABLE_MULTIDIM_ADVECTION to
C disable this section of code.
#ifdef GAD_ALLOW_TS_SOM_ADV
# ifdef ALLOW_AUTODIFF_TAMC
C This looks awkward from an F77 point of view, but TAF does the right thing.
CADJ STORE som_S(:,:,:,bi,bj,:) = comlev1_bibj, key=tkey, kind=isbyte
# endif
IF ( saltSOM_Advection ) THEN
# ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL('GAD_SOM_ADVECT',myThid)
# endif
CALL GAD_SOM_ADVECT(
I saltImplVertAdv,
I saltAdvScheme, saltVertAdvScheme, GAD_SALINITY,
I dTtracerLev, uFld, vFld, wFld, salt,
U som_S,
O gS_loc,
I bi, bj, myTime, myIter, myThid )
ELSEIF (saltMultiDimAdvec) THEN
#else /* GAD_ALLOW_TS_SOM_ADV */
IF (saltMultiDimAdvec) THEN
#endif /* GAD_ALLOW_TS_SOM_ADV */
# ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL('GAD_ADVECTION',myThid)
# endif
CALL GAD_ADVECTION(
I saltImplVertAdv,
I saltAdvScheme, saltVertAdvScheme, GAD_SALINITY,
I dTtracerLev, uFld, vFld, wFld, salt,
O gS_loc,
I bi, bj, myTime, myIter, myThid )
ENDIF
#endif /* DISABLE_MULTIDIM_ADVECTION */
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C- Start vertical index (k) loop (Nr:1)
calcAdvection = saltAdvection .AND. .NOT.saltMultiDimAdvec
DO k=Nr,1,-1
#ifdef ALLOW_AUTODIFF_TAMC
kkey = k + (tkey-1)*Nr
#endif
kM1 = MAX(1,k-1)
kUp = 1+MOD(k+1,2)
kDown= 1+MOD(k,2)
#ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE fVer(:,:,:) = comlev1_bibj_k, key=kkey, kind = isbyte
CADJ STORE gS_loc(:,:,k) = comlev1_bibj_k, key=kkey, kind = isbyte
# ifdef ALLOW_ADAMSBASHFORTH_3
CADJ STORE gsNm(:,:,k,bi,bj,1) = comlev1_bibj_k, key=kkey, kind = isbyte
CADJ STORE gsNm(:,:,k,bi,bj,2) = comlev1_bibj_k, key=kkey, kind = isbyte
# else
CADJ STORE gsNm1(:,:,k,bi,bj) = comlev1_bibj_k, key=kkey, kind = isbyte
# endif
#endif /* ALLOW_AUTODIFF_TAMC */
CALL CALC_ADV_FLOW(
I uFld, vFld, wFld,
U rTrans,
O uTrans, vTrans, rTransKp,
O maskUp, xA, yA,
I k, bi, bj, myThid )
C-- Collect forcing term in local array gsForc:
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
gsForc(i,j) = 0. _d 0
ENDDO
ENDDO
IF ( saltForcing ) THEN
CALL APPLY_FORCING_S(
U gsForc,
I iMin,iMax,jMin,jMax, k, bi,bj,
I myTime, myIter, myThid )
#ifdef ALLOW_DIAGNOSTICS
IF ( diagForcing ) THEN
CALL DIAGNOSTICS_FILL(gsForc,'gS_Forc ',k,1,2,bi,bj,myThid)
ENDIF
#endif /* ALLOW_DIAGNOSTICS */
ENDIF
#ifdef ALLOW_ADAMSBASHFORTH_3
c m1 = 1 + MOD(iterNb+1,2)
m2 = 1 + MOD( iterNb ,2)
CALL GAD_CALC_RHS(
I bi, bj, iMin,iMax,jMin,jMax, k, kM1, kUp, kDown,
I xA, yA, maskUp, uFld(1-OLx,1-OLy,k),
I vFld(1-OLx,1-OLy,k), wFld(1-OLx,1-OLy,k),
I uTrans, vTrans, rTrans, rTransKp,
I diffKhS, diffK4S, KappaRk(1-OLx,1-OLy,k), diffKr4S,
I salt(1-OLx,1-OLy,1,bi,bj),
I gsNm(1-OLx,1-OLy,1,bi,bj,m2), dTtracerLev,
I GAD_SALINITY, saltAdvScheme, saltVertAdvScheme,
I calcAdvection, saltImplVertAdv, AdamsBashforth_S,
I saltVertDiff4, useGMRedi, useKPP, salt_stayPositive,
O fZon, fMer,
U fVer, gS_loc,
I myTime, myIter, myThid )
#else /* ALLOW_ADAMSBASHFORTH_3 */
CALL GAD_CALC_RHS(
I bi, bj, iMin,iMax,jMin,jMax, k, kM1, kUp, kDown,
I xA, yA, maskUp, uFld(1-OLx,1-OLy,k),
I vFld(1-OLx,1-OLy,k), wFld(1-OLx,1-OLy,k),
I uTrans, vTrans, rTrans, rTransKp,
I diffKhS, diffK4S, KappaRk(1-OLx,1-OLy,k), diffKr4S,
I salt(1-OLx,1-OLy,1,bi,bj),
I gsNm1(1-OLx,1-OLy,1,bi,bj), dTtracerLev,
I GAD_SALINITY, saltAdvScheme, saltVertAdvScheme,
I calcAdvection, saltImplVertAdv, AdamsBashforth_S,
I saltVertDiff4, useGMRedi, useKPP, salt_stayPositive,
O fZon, fMer,
U fVer, gS_loc,
I myTime, myIter, myThid )
#endif /* ALLOW_ADAMSBASHFORTH_3 */
C-- External salinity forcing term(s) inside Adams-Bashforth:
IF ( saltForcing .AND. tracForcingOutAB.NE.1 ) THEN
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
gS_loc(i,j,k) = gS_loc(i,j,k) + gsForc(i,j)
ENDDO
ENDDO
ENDIF
IF ( AdamsBashforthGs ) THEN
#ifdef ALLOW_ADAMSBASHFORTH_3
CALL ADAMS_BASHFORTH3(
I bi, bj, k, Nr,
U gS_loc, gsNm,
O gs_AB,
I saltStartAB, iterNb, myThid )
#else
CALL ADAMS_BASHFORTH2(
I bi, bj, k, Nr,
U gS_loc, gsNm1(1-OLx,1-OLy,1,bi,bj),
O gs_AB,
I saltStartAB, iterNb, myThid )
#endif
#ifdef ALLOW_DIAGNOSTICS
IF ( diagAB_tend ) THEN
CALL DIAGNOSTICS_FILL(gs_AB,'AB_gS ',k,1,2,bi,bj,myThid)
ENDIF
#endif /* ALLOW_DIAGNOSTICS */
ENDIF
C-- External salinity forcing term(s) outside Adams-Bashforth:
IF ( saltForcing .AND. tracForcingOutAB.EQ.1 ) THEN
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
gS_loc(i,j,k) = gS_loc(i,j,k) + gsForc(i,j)
ENDDO
ENDDO
ENDIF
#ifdef NONLIN_FRSURF
# ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE gS_loc(:,:,k) = comlev1_bibj_k, key = kkey, kind = isbyte
# endif
IF (nonlinFreeSurf.GT.0) THEN
CALL FREESURF_RESCALE_G(
I bi, bj, k,
U gS_loc,
I myThid )
IF ( AdamsBashforthGs ) THEN
#ifdef ALLOW_ADAMSBASHFORTH_3
# ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE gsNm(:,:,k,bi,bj,1) = comlev1_bibj_k, key=kkey, kind=isbyte
CADJ STORE gsNm(:,:,k,bi,bj,2) = comlev1_bibj_k, key=kkey, kind=isbyte
# endif
CALL FREESURF_RESCALE_G(
I bi, bj, k,
U gsNm(1-OLx,1-OLy,1,bi,bj,1),
I myThid )
CALL FREESURF_RESCALE_G(
I bi, bj, k,
U gsNm(1-OLx,1-OLy,1,bi,bj,2),
I myThid )
#else
# ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE gsNm1(:,:,k,bi,bj) = comlev1_bibj_k, key=kkey, kind = isbyte
# endif
CALL FREESURF_RESCALE_G(
I bi, bj, k,
U gsNm1(1-OLx,1-OLy,1,bi,bj),
I myThid )
#endif
ENDIF
ENDIF
#endif /* NONLIN_FRSURF */
C- end of vertical index (k) loop (Nr:1)
ENDDO
#ifdef ALLOW_DOWN_SLOPE
IF ( useDOWN_SLOPE ) THEN
# ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE recip_hFac = comlev1_bibj, key = tkey, kind = isbyte
# endif
IF ( usingPCoords ) THEN
CALL DWNSLP_APPLY(
I GAD_SALINITY, bi, bj, kSurfC,
I salt(1-OLx,1-OLy,1,bi,bj),
U gS_loc,
I recip_hFac, recip_rA, recip_drF,
I dTtracerLev, myTime, myIter, myThid )
ELSE
CALL DWNSLP_APPLY(
I GAD_SALINITY, bi, bj, kLowC,
I salt(1-OLx,1-OLy,1,bi,bj),
U gS_loc,
I recip_hFac, recip_rA, recip_drF,
I dTtracerLev, myTime, myIter, myThid )
ENDIF
ENDIF
#endif /* ALLOW_DOWN_SLOPE */
C- Integrate forward in time, storing in gS_loc: gS <= S + dt*gS
CALL TIMESTEP_TRACER(
I bi, bj, dTtracerLev,
I salt(1-OLx,1-OLy,1,bi,bj),
U gS_loc,
I myTime, myIter, myThid )
C-- Implicit vertical advection & diffusion
#ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE gS_loc(:,:,:) = comlev1_bibj, key = tkey, kind = isbyte
#endif /* ALLOW_AUTODIFF_TAMC */
#ifdef INCLUDE_IMPLVERTADV_CODE
IF ( saltImplVertAdv .OR. implicitDiffusion ) THEN
C to recover older (prior to 2016-10-05) results:
c IF ( saltImplVertAdv ) THEN
# ifdef ALLOW_AUTODIFF_TAMC
CADJ STORE wFld(:,:,:) = comlev1_bibj, key = tkey, kind = isbyte
CADJ STORE salt(:,:,:,bi,bj) = comlev1_bibj, key = tkey, kind = isbyte
CADJ STORE recip_hFac(:,:,:) = comlev1_bibj, key = tkey, kind = isbyte
# endif /* ALLOW_AUTODIFF_TAMC */
CALL GAD_IMPLICIT_R(
I saltImplVertAdv, saltVertAdvScheme, GAD_SALINITY,
I dTtracerLev, kappaRk, recip_hFac, wFld,
I salt(1-OLx,1-OLy,1,bi,bj),
U gS_loc,
I bi, bj, myTime, myIter, myThid )
ELSEIF ( implicitDiffusion ) THEN
#else /* INCLUDE_IMPLVERTADV_CODE */
IF ( implicitDiffusion ) THEN
#endif /* INCLUDE_IMPLVERTADV_CODE */
CALL IMPLDIFF(
I bi, bj, iMin, iMax, jMin, jMax,
I GAD_SALINITY, kappaRk, recip_hFac,
U gS_loc,
I myThid )
ENDIF
IF ( AdamsBashforth_S ) THEN
C- Save current tracer field (for AB on tracer) and then update tracer
#ifdef ALLOW_ADAMSBASHFORTH_3
CALL CYCLE_AB_TRACER(
I bi, bj, gS_loc,
U salt(1-OLx,1-OLy,1,bi,bj),
O gsNm(1-OLx,1-OLy,1,bi,bj,m2),
I myTime, myIter, myThid )
#else /* ALLOW_ADAMSBASHFORTH_3 */
CALL CYCLE_AB_TRACER(
I bi, bj, gS_loc,
U salt(1-OLx,1-OLy,1,bi,bj),
O gsNm1(1-OLx,1-OLy,1,bi,bj),
I myTime, myIter, myThid )
#endif /* ALLOW_ADAMSBASHFORTH_3 */
ELSE
C- Update tracer fields: S(n) = S**
CALL CYCLE_TRACER(
I bi, bj,
O salt(1-OLx,1-OLy,1,bi,bj),
I gS_loc, myTime, myIter, myThid )
ENDIF
#endif /* ALLOW_GENERIC_ADVDIFF */
RETURN
END