pkg/mom_fluxform/mom_calc_rtrans.F

C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/mom_fluxform/mom_calc_rtrans.F,v 1.1.2.1 2003/03/07 06:59:51 heimbach Exp $
C $Name:  $

#include "CPP_OPTIONS.h"

CBOP
C     !ROUTINE: MOM_CALC_RTRANS
C     !INTERFACE: 
      SUBROUTINE MOM_CALC_RTRANS( 
     I                          k, bi, bj,
     O                          rTransU, rTransV,
     I                          myTime, myIter, myThid)
C     !DESCRIPTION: \bv
C     *==========================================================*
C     | SUBROUTINE MOM_CALC_RTRANS                            
C     | o Calculate vertical transports at interface k 
C     |   above U & V points (West & South face)
C     *==========================================================*
C     | r coordinate (z or p):
C     |  is simply half of the 2 vert. Transp at Center location
C     | r* coordinate: less simple since
C     |  d.eta/dt / H has to be evaluated locally at U & V points
C     *==========================================================*
C     \ev

C     !USES:
      IMPLICIT NONE
C     == GLobal variables ==
#include "SIZE.h"
#include "DYNVARS.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "SURFACE.h"

C     !INPUT/OUTPUT PARAMETERS:
C     == Routine arguments ==
C     k       :: vertical level
C     bi,bj   :: tile indices
C     rTransU :: vertical transport (above U point)
C     rTransV :: vertical transport (above V point)
C     myTime  :: current time
C     myIter  :: current iteration number
C     myThid  :: thread number 
C               
      INTEGER k, bi, bj, myIter, myThid
      _RL myTime
      _RL rTransU(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL rTransV(1-OLx:sNx+OLx,1-OLy:sNy+OLy)

C     !LOCAL VARIABLES:
#ifdef NONLIN_FRSURF
C     == Local variables in common block ==
C     dWtransC :: vertical transp. difference between r & r* coordinates
C     dWtransU :: same but above u.point location (West  face)
C     dWtransV :: same but above v.point location (South face)
      COMMON /LOCAL_MOM_CALC_RTRANS/ 
     &       dWtransC, dWtransU, dWtransV
      _RL dWtransC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)  
      _RL dWtransU(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)  
      _RL dWtransV(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)  
#endif /* NONLIN_FRSURF */
C     == Local variables ==
C     I, J :: Loop counters
      INTEGER i,j
CEOP

#ifdef NONLIN_FRSURF
      IF ( k.EQ.Nr+1 .AND.
     &     useRealFreshWaterFlux .AND.
     &     buoyancyRelation .EQ. 'OCEANICP' ) THEN
        DO j=1-OLy+1,sNy+OLy
         DO i=1-OLx+1,sNx+OLx
          rTransU(i,j) = convertEmP2rUnit*
     &      0.5 _d 0*( PmEpR( i ,j,bi,bj)*rA( i ,j,bi,bj)
     &                +PmEpR(i-1,j,bi,bj)*rA(i-1,j,bi,bj) )
          rTransV(i,j) = convertEmP2rUnit*
     &      0.5 _d 0*( PmEpR(i, j ,bi,bj)*rA(i, j ,bi,bj)
     &                +PmEpR(i,j-1,bi,bj)*rA(i,j-1,bi,bj) )
         ENDDO
        ENDDO
      ELSEIF ( k.GT.Nr ) THEN
#else /* NONLIN_FRSURF */
       IF ( k.GT.Nr ) THEN
#endif /* NONLIN_FRSURF */
        DO j=1-OLy+1,sNy+OLy
         DO i=1-OLx+1,sNx+OLx
          rTransU(i,j) = 0.
          rTransV(i,j) = 0.
         ENDDO
        ENDDO
      ELSE
C-    Calculate vertical transports above U & V points (West & South face):
        DO j=1-OLy+1,sNy+OLy
         DO i=1-OLx+1,sNx+OLx
          rTransU(i,j) =
     &      0.5 _d 0*( wVel(i-1,j,k,bi,bj)*rA(i-1,j,bi,bj)
     &                +wVel( i ,j,k,bi,bj)*rA( i ,j,bi,bj) )
          rTransV(i,j) =
     &      0.5 _d 0*( wVel(i,j-1,k,bi,bj)*rA(i,j-1,bi,bj)
     &                +wVel(i, j ,k,bi,bj)*rA(i, j ,bi,bj) )
         ENDDO
        ENDDO
      ENDIF           

#ifdef NONLIN_FRSURF
C---  Modify rTransU & rTransV when using r* coordinate:
      IF ( select_rStar.NE.0 ) THEN

       IF ( k.EQ.1) THEN
C-    Initialise dWtrans :
        DO j=1-OLy,sNy+OLy
         DO i=1-OLx,sNx+OLx
          dWtransC(i,j,bi,bj) = rStarDhCDt(i,j,bi,bj)
     &         *(Ro_surf(i,j,bi,bj)-R_low(i,j,bi,bj))
     &         *rA(i,j,bi,bj)
         ENDDO
        ENDDO
        DO j=1-OLy+1,sNy+OLy
         DO i=1-OLx+1,sNx+OLx
          dWtransU(i,j,bi,bj) = 
     &          0.5 _d 0*(dWtransC(i-1,j,bi,bj)+dWtransC(i,j,bi,bj))
          dWtransV(i,j,bi,bj) =
     &          0.5 _d 0*(dWtransC(i,j-1,bi,bj)+dWtransC(i,j,bi,bj))
         ENDDO
        ENDDO

       ELSEIF (k.LE.Nr) THEN
C-    Update dWtrans from previous value (interface k-1):
        DO j=1-OLy,sNy+OLy
         DO i=1-OLx,sNx+OLx
          dWtransC(i,j,bi,bj) = dWtransC(i,j,bi,bj)
     &     - rStarDhCDt(i,j,bi,bj)*drF(k-1)*h0FacC(i,j,k-1,bi,bj)
     &                            *rA(i,j,bi,bj)
         ENDDO
        ENDDO
        DO j=1-OLy+1,sNy+OLy
         DO i=1-OLx+1,sNx+OLx
          dWtransU(i,j,bi,bj) = dWtransU(i,j,bi,bj)
     &     - rStarDhWDt(i,j,bi,bj)*drF(k-1)*h0FacW(i,j,k-1,bi,bj)
     &                            *rAw(i,j,bi,bj)
          dWtransV(i,j,bi,bj) = dWtransV(i,j,bi,bj)
     &     - rStarDhSDt(i,j,bi,bj)*drF(k-1)*h0FacS(i,j,k-1,bi,bj)
     &                            *rAs(i,j,bi,bj)
         ENDDO
        ENDDO
C-    Modify rTransU & rTransV :
        DO j=1-OLy+1,sNy+OLy
         DO i=1-OLx+1,sNx+OLx
          rTransU(i,j) = rTransU(i,j)-dWtransU(i,j,bi,bj)
     &       + (dWtransC(i-1,j,bi,bj)+dWtransC(i,j,bi,bj))*0.5 _d 0
          rTransV(i,j) = rTransV(i,j)-dWtransV(i,j,bi,bj)
     &       + (dWtransC(i,j-1,bi,bj)+dWtransC(i,j,bi,bj))*0.5 _d 0
         ENDDO
        ENDDO

       ENDIF

      ENDIF
#endif /* NONLIN_FRSURF */

      RETURN
      END
1	heimbach	1.1.2.1	C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/mom_fluxform/mom_calc_rtrans.F,v 1.1.2.1 2003/03/07 06:59:51 heimbach Exp $
2	jmc	1.1	C $Name: $
3
4			#include "CPP_OPTIONS.h"
5
6			CBOP
7			C !ROUTINE: MOM_CALC_RTRANS
8			C !INTERFACE:
9			SUBROUTINE MOM_CALC_RTRANS(
10			I k, bi, bj,
11			O rTransU, rTransV,
12			I myTime, myIter, myThid)
13			C !DESCRIPTION: \bv
14			C ==========================================================
15			C \| SUBROUTINE MOM_CALC_RTRANS
16			C \| o Calculate vertical transports at interface k
17			C \| above U & V points (West & South face)
18			C ==========================================================
19			C \| r coordinate (z or p):
20			C \| is simply half of the 2 vert. Transp at Center location
21			C \| r* coordinate: less simple since
22			C \| d.eta/dt / H has to be evaluated locally at U & V points
23			C ==========================================================
24			C \ev
25
26			C !USES:
27			IMPLICIT NONE
28			C == GLobal variables ==
29			#include "SIZE.h"
30			#include "DYNVARS.h"
31			#include "EEPARAMS.h"
32			#include "PARAMS.h"
33			#include "GRID.h"
34			#include "SURFACE.h"
35
36			C !INPUT/OUTPUT PARAMETERS:
37			C == Routine arguments ==
38			C k :: vertical level
39			C bi,bj :: tile indices
40			C rTransU :: vertical transport (above U point)
41			C rTransV :: vertical transport (above V point)
42			C myTime :: current time
43			C myIter :: current iteration number
44			C myThid :: thread number
45			C
46			INTEGER k, bi, bj, myIter, myThid
47			_RL myTime
48			_RL rTransU(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
49			_RL rTransV(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
50
51			C !LOCAL VARIABLES:
52			#ifdef NONLIN_FRSURF
53			C == Local variables in common block ==
54			C dWtransC :: vertical transp. difference between r & r* coordinates
55			C dWtransU :: same but above u.point location (West face)
56			C dWtransV :: same but above v.point location (South face)
57			COMMON /LOCAL_MOM_CALC_RTRANS/
58			& dWtransC, dWtransU, dWtransV
59			_RL dWtransC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
60			_RL dWtransU(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
61			_RL dWtransV(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
62			#endif /* NONLIN_FRSURF */
63			C == Local variables ==
64			C I, J :: Loop counters
65			INTEGER i,j
66			CEOP
67
68			#ifdef NONLIN_FRSURF
69			IF ( k.EQ.Nr+1 .AND.
70			& useRealFreshWaterFlux .AND.
71			& buoyancyRelation .EQ. 'OCEANICP' ) THEN
72			DO j=1-OLy+1,sNy+OLy
73			DO i=1-OLx+1,sNx+OLx
74			rTransU(i,j) = convertEmP2rUnit*
75			& 0.5 _d 0( PmEpR( i ,j,bi,bj)rA( i ,j,bi,bj)
76			& +PmEpR(i-1,j,bi,bj)*rA(i-1,j,bi,bj) )
77			rTransV(i,j) = convertEmP2rUnit*
78			& 0.5 _d 0( PmEpR(i, j ,bi,bj)rA(i, j ,bi,bj)
79			& +PmEpR(i,j-1,bi,bj)*rA(i,j-1,bi,bj) )
80			ENDDO
81			ENDDO
82			ELSEIF ( k.GT.Nr ) THEN
83			#else /* NONLIN_FRSURF */
84			IF ( k.GT.Nr ) THEN
85			#endif /* NONLIN_FRSURF */
86			DO j=1-OLy+1,sNy+OLy
87			DO i=1-OLx+1,sNx+OLx
88			rTransU(i,j) = 0.
89			rTransV(i,j) = 0.
90			ENDDO
91			ENDDO
92			ELSE
93			C- Calculate vertical transports above U & V points (West & South face):
94			DO j=1-OLy+1,sNy+OLy
95			DO i=1-OLx+1,sNx+OLx
96			rTransU(i,j) =
97			& 0.5 _d 0( wVel(i-1,j,k,bi,bj)rA(i-1,j,bi,bj)
98			& +wVel( i ,j,k,bi,bj)*rA( i ,j,bi,bj) )
99			rTransV(i,j) =
100			& 0.5 _d 0( wVel(i,j-1,k,bi,bj)rA(i,j-1,bi,bj)
101			& +wVel(i, j ,k,bi,bj)*rA(i, j ,bi,bj) )
102			ENDDO
103			ENDDO
104			ENDIF
105
106			#ifdef NONLIN_FRSURF
107			C--- Modify rTransU & rTransV when using r* coordinate:
108			IF ( select_rStar.NE.0 ) THEN
109
110			IF ( k.EQ.1) THEN
111			C- Initialise dWtrans :
112			DO j=1-OLy,sNy+OLy
113			DO i=1-OLx,sNx+OLx
114			dWtransC(i,j,bi,bj) = rStarDhCDt(i,j,bi,bj)
115			& *(Ro_surf(i,j,bi,bj)-R_low(i,j,bi,bj))
116			& *rA(i,j,bi,bj)
117			ENDDO
118			ENDDO
119			DO j=1-OLy+1,sNy+OLy
120			DO i=1-OLx+1,sNx+OLx
121			dWtransU(i,j,bi,bj) =
122			& 0.5 _d 0*(dWtransC(i-1,j,bi,bj)+dWtransC(i,j,bi,bj))
123			dWtransV(i,j,bi,bj) =
124			& 0.5 _d 0*(dWtransC(i,j-1,bi,bj)+dWtransC(i,j,bi,bj))
125			ENDDO
126			ENDDO
127
128			ELSEIF (k.LE.Nr) THEN
129			C- Update dWtrans from previous value (interface k-1):
130			DO j=1-OLy,sNy+OLy
131			DO i=1-OLx,sNx+OLx
132			dWtransC(i,j,bi,bj) = dWtransC(i,j,bi,bj)
133			& - rStarDhCDt(i,j,bi,bj)drF(k-1)h0FacC(i,j,k-1,bi,bj)
134			& *rA(i,j,bi,bj)
135			ENDDO
136			ENDDO
137			DO j=1-OLy+1,sNy+OLy
138			DO i=1-OLx+1,sNx+OLx
139			dWtransU(i,j,bi,bj) = dWtransU(i,j,bi,bj)
140			& - rStarDhWDt(i,j,bi,bj)drF(k-1)h0FacW(i,j,k-1,bi,bj)
141			& *rAw(i,j,bi,bj)
142			dWtransV(i,j,bi,bj) = dWtransV(i,j,bi,bj)
143			& - rStarDhSDt(i,j,bi,bj)drF(k-1)h0FacS(i,j,k-1,bi,bj)
144			& *rAs(i,j,bi,bj)
145			ENDDO
146			ENDDO
147			C- Modify rTransU & rTransV :
148			DO j=1-OLy+1,sNy+OLy
149			DO i=1-OLx+1,sNx+OLx
150			rTransU(i,j) = rTransU(i,j)-dWtransU(i,j,bi,bj)
151			& + (dWtransC(i-1,j,bi,bj)+dWtransC(i,j,bi,bj))*0.5 _d 0
152			rTransV(i,j) = rTransV(i,j)-dWtransV(i,j,bi,bj)
153			& + (dWtransC(i,j-1,bi,bj)+dWtransC(i,j,bi,bj))*0.5 _d 0
154			ENDDO
155			ENDDO
156
157			ENDIF
158
159			ENDIF
160			#endif /* NONLIN_FRSURF */
161
162			RETURN
163			END