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C $Header$ |
C $Header$ |
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C $Name$ |
C $Name$ |
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CBOI |
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C !TITLE: pkg/generic\_advdiff |
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C !AUTHORS: adcroft@mit.edu |
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C !INTRODUCTION: Generic Advection Diffusion Package |
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C |
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C Package "generic\_advdiff" provides a common set of routines for calculating |
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C advective/diffusive fluxes for tracers (cell centered quantities on a C-grid). |
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C |
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C Many different advection schemes are available: the standard centered |
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C second order, centered fourth order and upwind biased third order schemes |
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C are known as linear methods and require some stable time-stepping method |
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C such as Adams-Bashforth. Alternatives such as flux-limited schemes are |
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C stable in the forward sense and are best combined with the multi-dimensional |
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C method provided in gad\_advection. |
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C |
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C There are two high-level routines: |
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C \begin{itemize} |
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C \item{GAD\_CALC\_RHS} calculates all fluxes at time level "n" and is used |
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C for the standard linear schemes. This must be used in conjuction with |
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C Adams-Bashforth time-stepping. Diffusive and parameterized fluxes are |
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C always calculated here. |
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C \item{GAD\_ADVECTION} calculates just the advective fluxes using the |
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C non-linear schemes and can not be used in conjuction with Adams-Bashforth |
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C time-stepping. |
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C \end{itemize} |
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CEOI |
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#include "GAD_OPTIONS.h" |
#include "GAD_OPTIONS.h" |
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CBOP |
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C !ROUTINE: GAD_ADVECTION |
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C !INTERFACE: ========================================================== |
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SUBROUTINE GAD_ADVECTION(bi,bj,advectionScheme,tracerIdentity, |
SUBROUTINE GAD_ADVECTION(bi,bj,advectionScheme,tracerIdentity, |
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U Tracer,Gtracer, |
U Tracer,Gtracer, |
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I myTime,myIter,myThid) |
I myTime,myIter,myThid) |
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C /==========================================================\ |
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C | SUBROUTINE GAD_ADVECTION | |
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C | o Solves the pure advection tracer equation. | |
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C |==========================================================| |
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C \==========================================================/ |
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IMPLICIT NONE |
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C == Global variables === |
C !DESCRIPTION: |
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C Calculates the tendancy of a tracer due to advection. |
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C It uses the multi-dimensional method given in \ref{sect:multiDimAdvection} |
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C and can only be used for the non-linear advection schemes such as the |
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C direct-space-time method and flux-limiters. |
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C |
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C The algorithm is as follows: |
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C \begin{itemize} |
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C \item{$\theta^{(n+1/3)} = \theta^{(n)} |
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C - \Delta t \partial_x (u\theta^{(n)}) + \theta^{(n)} \partial_x u$} |
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C \item{$\theta^{(n+2/3)} = \theta^{(n+1/3)} |
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C - \Delta t \partial_y (v\theta^{(n+1/3)}) + \theta^{(n)} \partial_y v$} |
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C \item{$\theta^{(n+3/3)} = \theta^{(n+2/3)} |
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C - \Delta t \partial_r (w\theta^{(n+2/3)}) + \theta^{(n)} \partial_r w$} |
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C \item{$G_\theta = ( \theta^{(n+3/3)} - \theta^{(n)} )/\Delta t$} |
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C \end{itemize} |
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C |
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C The tendancy (output) is over-written by this routine. |
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C !USES: =============================================================== |
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IMPLICIT NONE |
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#include "SIZE.h" |
#include "SIZE.h" |
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#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
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#include "PARAMS.h" |
#include "PARAMS.h" |
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#include "DYNVARS.h" |
#include "DYNVARS.h" |
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#include "GRID.h" |
#include "GRID.h" |
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#include "GAD.h" |
#include "GAD.h" |
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#ifdef ALLOW_AUTODIFF_TAMC |
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C == Routine arguments == |
# include "tamc.h" |
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# include "tamc_keys.h" |
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#endif |
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C !INPUT PARAMETERS: =================================================== |
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C bi,bj :: tile indices |
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C advectionScheme :: advection scheme to use |
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C tracerIdentity :: identifier for the tracer (required only for OBCS) |
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C Tracer :: tracer field |
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C myTime :: current time |
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C myIter :: iteration number |
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C myThid :: thread number |
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INTEGER bi,bj |
INTEGER bi,bj |
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INTEGER advectionScheme |
INTEGER advectionScheme |
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INTEGER tracerIdentity |
INTEGER tracerIdentity |
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_RL Tracer(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
_RL Tracer(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
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_RL Gtracer(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
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_RL myTime |
_RL myTime |
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INTEGER myIter |
INTEGER myIter |
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INTEGER myThid |
INTEGER myThid |
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C == Local variables |
C !OUTPUT PARAMETERS: ================================================== |
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C gTracer :: tendancy array |
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_RL gTracer(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr,nSx,nSy) |
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C !LOCAL VARIABLES: ==================================================== |
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C maskUp :: 2-D array for mask at W points |
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C iMin,iMax,jMin,jMax :: loop range for called routines |
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C i,j,k :: loop indices |
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C kup :: index into 2 1/2D array, toggles between 1 and 2 |
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C kdown :: index into 2 1/2D array, toggles between 2 and 1 |
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C kp1 :: =k+1 for k<Nr, =Nr for k=Nr |
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C xA,yA :: areas of X and Y face of tracer cells |
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C uTrans,vTrans,rTrans :: 2-D arrays of volume transports at U,V and W points |
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C rTransKp1 :: vertical volume transport at interface k+1 |
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C af :: 2-D array for horizontal advective flux |
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C fVerT :: 2 1/2D arrays for vertical advective flux |
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C localTij :: 2-D array used as temporary local copy of tracer fld |
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C localTijk :: 3-D array used as temporary local copy of tracer fld |
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C kp1Msk :: flag (0,1) to act as over-riding mask for W levels |
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C calc_fluxes_X :: logical to indicate to calculate fluxes in X dir |
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C calc_fluxes_Y :: logical to indicate to calculate fluxes in Y dir |
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C nipass :: number of passes to make in multi-dimensional method |
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C ipass :: number of the current pass being made |
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_RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RS maskUp (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER iMin,iMax,jMin,jMax |
INTEGER iMin,iMax,jMin,jMax |
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INTEGER i,j,k,kup,kDown,kp1 |
INTEGER i,j,k,kup,kDown |
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_RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL uTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL vTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL rTrans (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL rTransKp1(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL af (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL af (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL fVerT (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) |
_RL fVerT (1-OLx:sNx+OLx,1-OLy:sNy+OLy,2) |
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_RL localTij(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL localTij(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL kp1Msk |
_RL kp1Msk |
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LOGICAL calc_fluxes_X,calc_fluxes_Y |
LOGICAL calc_fluxes_X,calc_fluxes_Y |
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INTEGER nipass,ipass |
INTEGER nipass,ipass |
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CEOP |
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#ifdef ALLOW_AUTODIFF_TAMC |
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act1 = bi - myBxLo(myThid) |
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max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
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act2 = bj - myByLo(myThid) |
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max2 = myByHi(myThid) - myByLo(myThid) + 1 |
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act3 = myThid - 1 |
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max3 = nTx*nTy |
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act4 = ikey_dynamics - 1 |
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ikey = (act1 + 1) + act2*max1 |
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& + act3*max1*max2 |
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& + act4*max1*max2*max3 |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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C-- Set up work arrays with valid (i.e. not NaN) values |
C-- Set up work arrays with valid (i.e. not NaN) values |
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C These inital values do not alter the numerical results. They |
C These inital values do not alter the numerical results. They |
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rTrans(i,j) = 0. _d 0 |
rTrans(i,j) = 0. _d 0 |
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fVerT(i,j,1) = 0. _d 0 |
fVerT(i,j,1) = 0. _d 0 |
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fVerT(i,j,2) = 0. _d 0 |
fVerT(i,j,2) = 0. _d 0 |
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rTransKp1(i,j)= 0. _d 0 |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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C-- Start of k loop for horizontal fluxes |
C-- Start of k loop for horizontal fluxes |
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DO k=1,Nr |
DO k=1,Nr |
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#ifdef ALLOW_AUTODIFF_TAMC |
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kkey = (ikey-1)*Nr + k |
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CADJ STORE tracer(:,:,k,bi,bj) = comlev1_bibj_k, key=kkey, byte=isbyte |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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C-- Get temporary terms used by tendency routines |
C-- Get temporary terms used by tendency routines |
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CALL CALC_COMMON_FACTORS ( |
CALL CALC_COMMON_FACTORS ( |
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O xA,yA,uTrans,vTrans,rTrans,maskUp, |
O xA,yA,uTrans,vTrans,rTrans,maskUp, |
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I myThid) |
I myThid) |
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#ifdef ALLOW_GMREDI |
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C-- Residual transp = Bolus transp + Eulerian transp |
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IF (useGMRedi) |
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& CALL GMREDI_CALC_UVFLOW( |
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& uTrans, vTrans, bi, bj, k, myThid) |
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#endif /* ALLOW_GMREDI */ |
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C-- Make local copy of tracer array |
C-- Make local copy of tracer array |
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DO j=1-OLy,sNy+OLy |
DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
DO i=1-OLx,sNx+OLx |
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ELSE |
ELSE |
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nipass=1 |
nipass=1 |
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ENDIF |
ENDIF |
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nipass=1 |
cph nipass=1 |
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C-- Multiple passes for different directions on different tiles |
C-- Multiple passes for different directions on different tiles |
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DO ipass=1,nipass |
DO ipass=1,nipass |
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#ifdef ALLOW_AUTODIFF_TAMC |
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passkey = ipass + (k-1) *maxpass |
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& + (ikey-1)*maxpass*Nr |
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IF (nipass .GT. maxpass) THEN |
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STOP 'GAD_ADVECTION: nipass > maxpass. check tamc.h' |
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ENDIF |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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IF (nipass.EQ.3) THEN |
IF (nipass.EQ.3) THEN |
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calc_fluxes_X=.FALSE. |
calc_fluxes_X=.FALSE. |
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af(i,j) = 0. |
af(i,j) = 0. |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifndef DISABLE_MULTIDIM_ADVECTION |
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CADJ STORE localTij(:,:) = comlev1_bibj_pass, key=passkey, byte=isbyte |
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#endif |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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IF (advectionScheme.EQ.ENUM_FLUX_LIMIT) THEN |
IF (advectionScheme.EQ.ENUM_FLUX_LIMIT) THEN |
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CALL GAD_FLUXLIMIT_ADV_X( |
CALL GAD_FLUXLIMIT_ADV_X( |
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& bi,bj,k,deltaTtracer,uTrans,uVel,localTij,af,myThid) |
& bi,bj,k,deltaTtracer,uTrans,uVel,localTij,af,myThid) |
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CALL GAD_DST3FL_ADV_X( |
CALL GAD_DST3FL_ADV_X( |
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& bi,bj,k,deltaTtracer,uTrans,uVel,localTij,af,myThid) |
& bi,bj,k,deltaTtracer,uTrans,uVel,localTij,af,myThid) |
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ELSE |
ELSE |
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STOP 'GAD_ADVECTION: adv. scheme incompatibale with mutli-dim' |
write(0,*) advectionScheme |
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STOP 'GAD_ADVECTION: adv. scheme incompatibale with multi-dim' |
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ENDIF |
ENDIF |
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DO j=1-Oly,sNy+Oly |
DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx-1 |
DO i=1-Olx,sNx+Olx-1 |
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localTij(i,j)=localTij(i,j)-deltaTtracer* |
localTij(i,j)=localTij(i,j)-deltaTtracer* |
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af(i,j) = 0. |
af(i,j) = 0. |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifndef DISABLE_MULTIDIM_ADVECTION |
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CADJ STORE localTij(:,:) = comlev1_bibj_pass, key=passkey, byte=isbyte |
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#endif |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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IF (advectionScheme.EQ.ENUM_FLUX_LIMIT) THEN |
IF (advectionScheme.EQ.ENUM_FLUX_LIMIT) THEN |
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CALL GAD_FLUXLIMIT_ADV_Y( |
CALL GAD_FLUXLIMIT_ADV_Y( |
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& bi,bj,k,deltaTtracer,vTrans,vVel,localTij,af,myThid) |
& bi,bj,k,deltaTtracer,vTrans,vVel,localTij,af,myThid) |
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ELSE |
ELSE |
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STOP 'GAD_ADVECTION: adv. scheme incompatibale with mutli-dim' |
STOP 'GAD_ADVECTION: adv. scheme incompatibale with mutli-dim' |
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ENDIF |
ENDIF |
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DO j=1-Oly,sNy+Oly-1 |
DO j=1-Oly,sNy+Oly-1 |
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DO i=1-Olx,sNx+Olx |
DO i=1-Olx,sNx+Olx |
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localTij(i,j)=localTij(i,j)-deltaTtracer* |
localTij(i,j)=localTij(i,j)-deltaTtracer* |
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C-- Start of k loop for vertical flux |
C-- Start of k loop for vertical flux |
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DO k=Nr,1,-1 |
DO k=Nr,1,-1 |
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#ifdef ALLOW_AUTODIFF_TAMC |
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kkey = (ikey-1)*Nr + k |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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C-- kup Cycles through 1,2 to point to w-layer above |
C-- kup Cycles through 1,2 to point to w-layer above |
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C-- kDown Cycles through 2,1 to point to w-layer below |
C-- kDown Cycles through 2,1 to point to w-layer below |
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kup = 1+MOD(k+1,2) |
kup = 1+MOD(k+1,2) |
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kDown= 1+MOD(k,2) |
kDown= 1+MOD(k,2) |
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c kp1=min(Nr,k+1) |
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kp1Msk=1. |
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if (k.EQ.Nr) kp1Msk=0. |
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C-- Get temporary terms used by tendency routines |
#ifdef ALLOW_AUTODIFF_TAMC |
391 |
CALL CALC_COMMON_FACTORS ( |
CADJ STORE localTijk(:,:,k) |
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I bi,bj,iMin,iMax,jMin,jMax,k, |
CADJ & = comlev1_bibj_k, key=kkey, byte=isbyte |
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O xA,yA,uTrans,vTrans,rTrans,maskUp, |
#endif /* ALLOW_AUTODIFF_TAMC */ |
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I myThid) |
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C- Advective flux in R |
C-- Compute Vertical transport |
396 |
DO j=1-Oly,sNy+Oly |
C Note: wVel needs to be masked |
397 |
DO i=1-Olx,sNx+Olx |
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af(i,j) = 0. |
IF (k.EQ.1) THEN |
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C- Surface interface : |
400 |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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rTransKp1(i,j) = rTrans(i,j) |
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rTrans(i,j) = 0. |
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fVerT(i,j,kUp) = 0. |
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ENDDO |
407 |
ENDDO |
ENDDO |
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ENDDO |
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C Note: wVel needs to be masked |
ELSE |
410 |
IF (K.GE.2) THEN |
C- Interior interface : |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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rTransKp1(i,j) = kp1Msk*rTrans(i,j) |
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rTrans(i,j) = wVel(i,j,k,bi,bj)*rA(i,j,bi,bj) |
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& *maskC(i,j,k-1,bi,bj) |
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af(i,j) = 0. |
417 |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_GMREDI |
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C-- Residual transp = Bolus transp + Eulerian transp |
422 |
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IF (useGMRedi) |
423 |
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& CALL GMREDI_CALC_WFLOW( |
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& rTrans, bi, bj, k, myThid) |
425 |
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#endif /* ALLOW_GMREDI */ |
426 |
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427 |
C- Compute vertical advective flux in the interior: |
C- Compute vertical advective flux in the interior: |
428 |
IF (advectionScheme.EQ.ENUM_FLUX_LIMIT) THEN |
IF (advectionScheme.EQ.ENUM_FLUX_LIMIT) THEN |
429 |
CALL GAD_FLUXLIMIT_ADV_R( |
CALL GAD_FLUXLIMIT_ADV_R( |
437 |
ELSE |
ELSE |
438 |
STOP 'GAD_ADVECTION: adv. scheme incompatibale with mutli-dim' |
STOP 'GAD_ADVECTION: adv. scheme incompatibale with mutli-dim' |
439 |
ENDIF |
ENDIF |
440 |
C- Surface "correction" term at k>1 : |
C- add the advective flux to fVerT |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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af(i,j) = af(i,j) |
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& + (maskC(i,j,k,bi,bj)-maskC(i,j,k-1,bi,bj))* |
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& rTrans(i,j)*localTijk(i,j,k) |
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ENDDO |
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ENDDO |
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ELSE |
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C- Surface "correction" term at k=1 : |
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441 |
DO j=1-Oly,sNy+Oly |
DO j=1-Oly,sNy+Oly |
442 |
DO i=1-Olx,sNx+Olx |
DO i=1-Olx,sNx+Olx |
443 |
af(i,j) = rTrans(i,j)*localTijk(i,j,k) |
fVerT(i,j,kUp) = af(i,j) |
444 |
ENDDO |
ENDDO |
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ENDDO |
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ENDIF |
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C- add the advective flux to fVerT |
|
|
DO j=1-Oly,sNy+Oly |
|
|
DO i=1-Olx,sNx+Olx |
|
|
fVerT(i,j,kUp) = af(i,j) |
|
445 |
ENDDO |
ENDDO |
446 |
ENDDO |
|
447 |
|
C- end Surface/Interior if bloc |
448 |
|
ENDIF |
449 |
|
|
450 |
C-- Divergence of fluxes |
C-- Divergence of fluxes |
|
kp1=min(Nr,k+1) |
|
|
kp1Msk=1. |
|
|
if (k.EQ.Nr) kp1Msk=0. |
|
451 |
DO j=1-Oly,sNy+Oly |
DO j=1-Oly,sNy+Oly |
452 |
DO i=1-Olx,sNx+Olx |
DO i=1-Olx,sNx+Olx |
453 |
localTij(i,j)=localTijk(i,j,k)-deltaTtracer* |
localTij(i,j)=localTijk(i,j,k)-deltaTtracer* |
454 |
& _recip_hFacC(i,j,k,bi,bj)*recip_drF(k) |
& _recip_hFacC(i,j,k,bi,bj)*recip_drF(k) |
455 |
& *recip_rA(i,j,bi,bj) |
& *recip_rA(i,j,bi,bj) |
456 |
& *( fVerT(i,j,kUp)-fVerT(i,j,kDown) |
& *( fVerT(i,j,kUp)-fVerT(i,j,kDown) |
457 |
& -tracer(i,j,k,bi,bj)*rA(i,j,bi,bj)* |
& -tracer(i,j,k,bi,bj)*(rTrans(i,j)-rTransKp1(i,j)) |
|
& (wVel(i,j,k,bi,bj)-kp1Msk*wVel(i,j,kp1,bi,bj)) |
|
458 |
& )*rkFac |
& )*rkFac |
459 |
gTracer(i,j,k,bi,bj)= |
gTracer(i,j,k,bi,bj)= |
460 |
& (localTij(i,j)-tracer(i,j,k,bi,bj))/deltaTtracer |
& (localTij(i,j)-tracer(i,j,k,bi,bj))/deltaTtracer |