| 1 |
jmc |
1.8 |
C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/gad_dst3_adv_r.F,v 1.7 2006/06/18 23:31:35 jmc Exp $ |
| 2 |
adcroft |
1.2 |
C $Name: $ |
| 3 |
adcroft |
1.1 |
|
| 4 |
|
|
#include "GAD_OPTIONS.h" |
| 5 |
|
|
|
| 6 |
jmc |
1.6 |
CBOP |
| 7 |
|
|
C !ROUTINE: GAD_DST3_ADV_R |
| 8 |
|
|
|
| 9 |
|
|
C !INTERFACE: ========================================================== |
| 10 |
jmc |
1.7 |
SUBROUTINE GAD_DST3_ADV_R( |
| 11 |
jmc |
1.6 |
I bi,bj,k,dTarg, |
| 12 |
jmc |
1.7 |
I rTrans, wFld, |
| 13 |
adcroft |
1.1 |
I tracer, |
| 14 |
|
|
O wT, |
| 15 |
|
|
I myThid ) |
| 16 |
jmc |
1.6 |
|
| 17 |
|
|
C !DESCRIPTION: |
| 18 |
|
|
C Calculates the area integrated vertical flux due to advection of a tracer |
| 19 |
|
|
C using 3rd-order Direct Space and Time (DST-3) Advection Scheme |
| 20 |
|
|
|
| 21 |
|
|
C !USES: =============================================================== |
| 22 |
adcroft |
1.1 |
IMPLICIT NONE |
| 23 |
|
|
|
| 24 |
|
|
C == GLobal variables == |
| 25 |
|
|
#include "SIZE.h" |
| 26 |
|
|
#include "GRID.h" |
| 27 |
|
|
#include "EEPARAMS.h" |
| 28 |
|
|
#include "PARAMS.h" |
| 29 |
|
|
#include "GAD.h" |
| 30 |
|
|
|
| 31 |
|
|
C == Routine arguments == |
| 32 |
jmc |
1.6 |
C !INPUT PARAMETERS: =================================================== |
| 33 |
|
|
C bi,bj :: tile indices |
| 34 |
|
|
C k :: vertical level |
| 35 |
|
|
C deltaTloc :: local time-step (s) |
| 36 |
|
|
C rTrans :: vertical volume transport |
| 37 |
jmc |
1.7 |
C wFld :: vertical flow |
| 38 |
jmc |
1.6 |
C tracer :: tracer field |
| 39 |
|
|
C myThid :: thread number |
| 40 |
|
|
INTEGER bi,bj,k |
| 41 |
adcroft |
1.1 |
_RL dTarg |
| 42 |
|
|
_RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 43 |
jmc |
1.7 |
_RL wFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 44 |
jmc |
1.6 |
_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
| 45 |
|
|
INTEGER myThid |
| 46 |
|
|
|
| 47 |
|
|
C !OUTPUT PARAMETERS: ================================================== |
| 48 |
|
|
C wT :: vertical advective flux |
| 49 |
adcroft |
1.1 |
_RL wT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 50 |
|
|
|
| 51 |
|
|
C == Local variables == |
| 52 |
jmc |
1.6 |
C !LOCAL VARIABLES: ==================================================== |
| 53 |
|
|
C i,j :: loop indices |
| 54 |
|
|
C km1 :: =max( k-1 , 1 ) |
| 55 |
|
|
C rLimit :: centered (vs upwind) fraction |
| 56 |
jmc |
1.7 |
C wLoc :: velocity, vertical component |
| 57 |
jmc |
1.6 |
C wCFL :: Courant-Friedrich-Levy number |
| 58 |
|
|
INTEGER i,j,kp1,km1,km2 |
| 59 |
adcroft |
1.1 |
_RL Rjm,Rj,Rjp,cfl,d0,d1 |
| 60 |
|
|
_RL psiP,psiM,thetaP,thetaM |
| 61 |
jmc |
1.7 |
_RL wLoc |
| 62 |
heimbach |
1.4 |
_RL smallNo |
| 63 |
adcroft |
1.1 |
|
| 64 |
heimbach |
1.4 |
IF (inAdMode) THEN |
| 65 |
|
|
smallNo = 1.0D-20 |
| 66 |
|
|
ELSE |
| 67 |
|
|
smallNo = 1.0D-20 |
| 68 |
|
|
ENDIF |
| 69 |
|
|
|
| 70 |
adcroft |
1.1 |
km2=MAX(1,k-2) |
| 71 |
|
|
km1=MAX(1,k-1) |
| 72 |
|
|
kp1=MIN(Nr,k+1) |
| 73 |
|
|
|
| 74 |
|
|
DO j=1-Oly,sNy+Oly |
| 75 |
|
|
DO i=1-Olx,sNx+Olx |
| 76 |
jmc |
1.6 |
Rjp=(tracer(i,j,k)-tracer(i,j,kp1)) |
| 77 |
|
|
& *maskC(i,j,kp1,bi,bj) |
| 78 |
|
|
Rj =(tracer(i,j,km1)-tracer(i,j,k)) |
| 79 |
|
|
& *maskC(i,j,k,bi,bj)*maskC(i,j,km1,bi,bj) |
| 80 |
|
|
Rjm=(tracer(i,j,km2)-tracer(i,j,km1)) |
| 81 |
|
|
& *maskC(i,j,km1,bi,bj) |
| 82 |
adcroft |
1.1 |
|
| 83 |
jmc |
1.8 |
wLoc = wFld(i,j) |
| 84 |
|
|
c wLoc = rTrans(i,j)*recip_rA(i,j,bi,bj) |
| 85 |
jmc |
1.7 |
cfl=abs(wLoc*dTarg*recip_drC(k)) |
| 86 |
adcroft |
1.1 |
d0=(2.-cfl)*(1.-cfl)*oneSixth |
| 87 |
|
|
d1=(1.-cfl*cfl)*oneSixth |
| 88 |
jmc |
1.5 |
#ifdef ALLOW_MATRIX |
| 89 |
|
|
IF (.NOT.useMATRIX) THEN |
| 90 |
jmc |
1.7 |
#endif /* ALLOW_MATRIX */ |
| 91 |
heimbach |
1.4 |
IF ( ABS(Rj).LT.smallNo .OR. |
| 92 |
|
|
& ABS(Rjm).LT.smallNo ) THEN |
| 93 |
|
|
thetaP=0. |
| 94 |
|
|
psiP=0. |
| 95 |
|
|
ELSE |
| 96 |
|
|
thetaP=(Rjm+smallNo)/(smallNo+Rj) |
| 97 |
|
|
psiP=d0+d1*thetaP |
| 98 |
|
|
ENDIF |
| 99 |
|
|
IF ( ABS(Rj).LT.smallNo .OR. |
| 100 |
|
|
& ABS(Rjp).LT.smallNo ) THEN |
| 101 |
|
|
thetaM=0. |
| 102 |
|
|
psiM=0. |
| 103 |
|
|
ELSE |
| 104 |
|
|
thetaM=(Rjp+smallNo)/(smallNo+Rj) |
| 105 |
|
|
psiM=d0+d1*thetaM |
| 106 |
|
|
ENDIF |
| 107 |
|
|
wT(i,j)= |
| 108 |
|
|
& 0.5*(rTrans(i,j)+abs(rTrans(i,j))) |
| 109 |
jmc |
1.6 |
& *( tracer(i,j, k ) + psiM*Rj ) |
| 110 |
heimbach |
1.4 |
& +0.5*(rTrans(i,j)-abs(rTrans(i,j))) |
| 111 |
jmc |
1.6 |
& *( tracer(i,j,km1) - psiP*Rj ) |
| 112 |
jmc |
1.5 |
#ifdef ALLOW_MATRIX |
| 113 |
|
|
ELSE |
| 114 |
|
|
wT(i,j)= |
| 115 |
|
|
& 0.5*(rTrans(i,j)+abs(rTrans(i,j))) |
| 116 |
jmc |
1.6 |
& *( tracer(i,j, k ) + (d0*Rj+d1*Rjp) ) |
| 117 |
jmc |
1.5 |
& +0.5*(rTrans(i,j)-abs(rTrans(i,j))) |
| 118 |
jmc |
1.6 |
& *( tracer(i,j,km1) - (d0*Rj+d1*Rjm) ) |
| 119 |
jmc |
1.5 |
ENDIF |
| 120 |
|
|
#endif /* ALLOW_MATRIX */ |
| 121 |
|
|
|
| 122 |
adcroft |
1.1 |
ENDDO |
| 123 |
|
|
ENDDO |
| 124 |
|
|
|
| 125 |
|
|
RETURN |
| 126 |
|
|
END |
Parent Directory
| 
Revision Log
| 
Revision Graph