pkg/mom_fluxform/mom_v_coriolis.F

C $Header: /u/gcmpack/models/MITgcmUV/pkg/mom_fluxform/mom_v_coriolis.F,v 1.4 2001/09/28 03:25:15 adcroft Exp $
C $Name:  $

#include "CPP_OPTIONS.h"

CBOP
C !ROUTINE: MOM_V_CORIOLIS

C !INTERFACE: ==========================================================
      SUBROUTINE MOM_V_CORIOLIS( 
     I        bi,bj,k,uFld,
     U        vCoriolisTerm,
     I        myThid)

C !DESCRIPTION:
C Calculates the horizontal Coriolis term in the meridional equation:
C \begin{equation*}
C -\overline{f}^j \overline{u}^{ij}
C \end{equation*}

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

C !INPUT PARAMETERS: ===================================================
C  bi,bj                :: tile indices
C  k                    :: vertical level
C  uFld                 :: zonal flow
C  myThid               :: thread number
      INTEGER bi,bj,K
      _RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      INTEGER myThid

C !OUTPUT PARAMETERS: ==================================================
C  vCoriolisTerm        :: Coriolis term
      _RL vCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)

C !LOCAL VARIABLES: ====================================================
C  i,j                  :: loop indices
      INTEGER I,J
CEOP

      IF (useEnergyConservingCoriolis) THEN
C Energy conserving discretization
       DO j=1-Oly+1,sNy+Oly
        DO i=1-Olx,sNx+Olx-1
         vCoriolisTerm(i,j) =
     &    -0.5*( _fCori(i, j ,bi,bj)
     &          *0.5*( uFld( i , j )+uFld(i+1, j ) )
     &         + _fCori(i,j-1,bi,bj)
     &          *0.5*( uFld( i ,j-1)+uFld(i+1,j-1) ) )
        ENDDO
       ENDDO
      ELSE
C Original discretization
       DO j=1-Oly+1,sNy+Oly
        DO i=1-Olx,sNx+Olx-1
        vCoriolisTerm(i,j) =
     &    -0.5*(_fCori(i, j ,bi,bj)+_fCori(i,j-1,bi,bj))
     &   *0.25*( uFld(i, j )+uFld(i+1, j )
     &          +uFld(i,j-1)+uFld(i+1,j-1)
     &         )
        ENDDO
       ENDDO
      ENDIF

      RETURN
      END
1	C $Header: /u/gcmpack/models/MITgcmUV/pkg/mom_fluxform/mom_v_coriolis.F,v 1.4 2001/09/28 03:25:15 adcroft Exp $
2	C $Name: $
3
4	#include "CPP_OPTIONS.h"
5
6	CBOP
7	C !ROUTINE: MOM_V_CORIOLIS
8
9	C !INTERFACE: ==========================================================
10	SUBROUTINE MOM_V_CORIOLIS(
11	I bi,bj,k,uFld,
12	U vCoriolisTerm,
13	I myThid)
14
15	C !DESCRIPTION:
16	C Calculates the horizontal Coriolis term in the meridional equation:
17	C \begin{equation*}
18	C -\overline{f}^j \overline{u}^{ij}
19	C \end{equation*}
20
21	C !USES: ===============================================================
22	IMPLICIT NONE
23	#include "SIZE.h"
24	#include "DYNVARS.h"
25	#include "EEPARAMS.h"
26	#include "PARAMS.h"
27	#include "GRID.h"
28	#include "SURFACE.h"
29
30	C !INPUT PARAMETERS: ===================================================
31	C bi,bj :: tile indices
32	C k :: vertical level
33	C uFld :: zonal flow
34	C myThid :: thread number
35	INTEGER bi,bj,K
36	_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
37	INTEGER myThid
38
39	C !OUTPUT PARAMETERS: ==================================================
40	C vCoriolisTerm :: Coriolis term
41	_RL vCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
42
43	C !LOCAL VARIABLES: ====================================================
44	C i,j :: loop indices
45	INTEGER I,J
46	CEOP
47
48	IF (useEnergyConservingCoriolis) THEN
49	C Energy conserving discretization
50	DO j=1-Oly+1,sNy+Oly
51	DO i=1-Olx,sNx+Olx-1
52	vCoriolisTerm(i,j) =
53	& -0.5*( _fCori(i, j ,bi,bj)
54	& 0.5( uFld( i , j )+uFld(i+1, j ) )
55	& + _fCori(i,j-1,bi,bj)
56	& 0.5( uFld( i ,j-1)+uFld(i+1,j-1) ) )
57	ENDDO
58	ENDDO
59	ELSE
60	C Original discretization
61	DO j=1-Oly+1,sNy+Oly
62	DO i=1-Olx,sNx+Olx-1
63	vCoriolisTerm(i,j) =
64	& -0.5*(_fCori(i, j ,bi,bj)+_fCori(i,j-1,bi,bj))
65	& 0.25( uFld(i, j )+uFld(i+1, j )
66	& +uFld(i,j-1)+uFld(i+1,j-1)
67	& )
68	ENDDO
69	ENDDO
70	ENDIF
71
72	RETURN
73	END