pkg/generic_advdiff/gad_c4_adv_r.F

C $Header: $
C $Name: $

#include "GAD_OPTIONS.h"

      SUBROUTINE GAD_C4_ADV_R( 
     I           bi,bj,k,
     I           rTrans,
     I           tracer,
     O           wT,
     I           myThid )
      IMPLICIT NONE

C     == GLobal variables ==
#include "SIZE.h"
#include "GRID.h"
#include "GAD.h"

C     == Routine arguments ==
      INTEGER bi,bj,k
      _RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
      _RL wT    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      INTEGER myThid

C     == Local variables ==
      INTEGER i,j,kp1,km1,km2
      _RL Cr,Rjm,Rj,Rjp,Rjjm,Rjjp
#include "GAD_FLUX_LIMITER.h"

      km2=MAX(1,k-2)
      km1=MAX(1,k-1)
      kp1=MIN(Nr,k+1)

      IF ( k.GT.Nr) THEN
       DO j=1-Oly,sNy+Oly
        DO i=1-Olx,sNx+Olx
         wT(i,j) = 0.
        ENDDO
       ENDDO
      ELSE
       DO j=1-Oly,sNy+Oly
        DO i=1-Olx,sNx+Olx
         Rjp=(tracer(i,j,kp1,bi,bj)-tracer(i,j,k,bi,bj))
     &        *maskC(i,j,kp1,bi,bj)
         Rj=(tracer(i,j,k,bi,bj)-tracer(i,j,kM1,bi,bj))
     &        *maskC(i,j,k,bi,bj)
         Rjm=(tracer(i,j,km1,bi,bj)-tracer(i,j,kM2,bi,bj))
     &        *maskC(i,j,km1,bi,bj)
         Rjjp=Rjp-Rj
         Rjjm=Rj-Rjm
         wT(i,j) =
     &     rTrans(i,j)*(
     &       (maskC(i,j,kM1,bi,bj)*
     &        (Tracer(i,j,k,bi,bj)+Tracer(i,j,kM1,bi,bj))*0.5 _d 0
     &       +(maskC(i,j,k,bi,bj)-maskC(i,j,kM1,bi,bj))*
     &        Tracer(i,j,k,bi,bj)
     &       )
     &     -maskC(i,j,km1,bi,bj)*oneSixth*(Rjjm+Rjjp)*0.5 _d 0 )
        ENDDO
       ENDDO
      ENDIF

      RETURN
      END
1	adcroft	1.1	C $Header: $
2			C $Name: $
3
4			#include "GAD_OPTIONS.h"
5
6			SUBROUTINE GAD_C4_ADV_R(
7			I bi,bj,k,
8			I rTrans,
9			I tracer,
10			O wT,
11			I myThid )
12			IMPLICIT NONE
13
14			C == GLobal variables ==
15			#include "SIZE.h"
16			#include "GRID.h"
17			#include "GAD.h"
18
19			C == Routine arguments ==
20			INTEGER bi,bj,k
21			_RL rTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
22			_RL tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
23			_RL wT (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
24			INTEGER myThid
25
26			C == Local variables ==
27			INTEGER i,j,kp1,km1,km2
28			_RL Cr,Rjm,Rj,Rjp,Rjjm,Rjjp
29			#include "GAD_FLUX_LIMITER.h"
30
31			km2=MAX(1,k-2)
32			km1=MAX(1,k-1)
33			kp1=MIN(Nr,k+1)
34
35			IF ( k.GT.Nr) THEN
36			DO j=1-Oly,sNy+Oly
37			DO i=1-Olx,sNx+Olx
38			wT(i,j) = 0.
39			ENDDO
40			ENDDO
41			ELSE
42			DO j=1-Oly,sNy+Oly
43			DO i=1-Olx,sNx+Olx
44			Rjp=(tracer(i,j,kp1,bi,bj)-tracer(i,j,k,bi,bj))
45			& *maskC(i,j,kp1,bi,bj)
46			Rj=(tracer(i,j,k,bi,bj)-tracer(i,j,kM1,bi,bj))
47			& *maskC(i,j,k,bi,bj)
48			Rjm=(tracer(i,j,km1,bi,bj)-tracer(i,j,kM2,bi,bj))
49			& *maskC(i,j,km1,bi,bj)
50			Rjjp=Rjp-Rj
51			Rjjm=Rj-Rjm
52			wT(i,j) =
53			& rTrans(i,j)*(
54			& (maskC(i,j,kM1,bi,bj)*
55			& (Tracer(i,j,k,bi,bj)+Tracer(i,j,kM1,bi,bj))*0.5 _d 0
56			& +(maskC(i,j,k,bi,bj)-maskC(i,j,kM1,bi,bj))*
57			& Tracer(i,j,k,bi,bj)
58			& )
59			& -maskC(i,j,km1,bi,bj)oneSixth(Rjjm+Rjjp)*0.5 _d 0 )
60			ENDDO
61			ENDDO
62			ENDIF
63
64			RETURN
65			END