/[MITgcm]/MITgcm/pkg/mom_fluxform/mom_v_coriolis.F
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revision 1.2 by adcroft, Tue May 29 14:01:38 2001 UTC revision 1.5 by adcroft, Mon Nov 26 16:13:27 2001 UTC
# Line 3  C $Name$ Line 3  C $Name$
3    
4  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
5    
6    CBOP
7    C !ROUTINE: MOM_V_CORIOLIS
8    
9    C !INTERFACE: ==========================================================
10        SUBROUTINE MOM_V_CORIOLIS(        SUBROUTINE MOM_V_CORIOLIS(
11       I        bi,bj,k,uFld,       I        bi,bj,k,uFld,
12       U        vCoriolisTerm,       U        vCoriolisTerm,
13       I        myThid)       I        myThid)
       IMPLICIT NONE  
14    
15  C     Calculates Coriolis term, f*U, in V equation  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     == Global variables ==  C !USES: ===============================================================
22          IMPLICIT NONE
23  #include "SIZE.h"  #include "SIZE.h"
24  #include "DYNVARS.h"  #include "DYNVARS.h"
25  #include "EEPARAMS.h"  #include "EEPARAMS.h"
# Line 19  C     == Global variables == Line 27  C     == Global variables ==
27  #include "GRID.h"  #include "GRID.h"
28  #include "SURFACE.h"  #include "SURFACE.h"
29    
30  C     == Routine arguments ==  C !INPUT PARAMETERS: ===================================================
31  C     myThid - Instance number for this innvocation of CALC_MOM_RHS  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        INTEGER bi,bj,K
36        _RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
       _RL vCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)  
37        INTEGER myThid        INTEGER myThid
38    
39  C     == Local variables ==  C !OUTPUT PARAMETERS: ==================================================
40        INTEGER i,j  C  vCoriolisTerm        :: Coriolis term
41          _RL vCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
42    
43        DO j=1-Oly+1,sNy+Oly  C !LOCAL VARIABLES: ====================================================
44         DO i=1-Olx,sNx+Olx-1  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) =          vCoriolisTerm(i,j) =
64       &    -0.5*(_fCori(i, j ,bi,bj)+_fCori(i,j-1,bi,bj))       &    -0.5*(_fCori(i, j ,bi,bj)+_fCori(i,j-1,bi,bj))
65       &   *0.25*( uFld(i, j )+uFld(i+1, j )       &   *0.25*( uFld(i, j )+uFld(i+1, j )
66       &          +uFld(i,j-1)+uFld(i+1,j-1)       &          +uFld(i,j-1)+uFld(i+1,j-1)
67       &         )       &         )
68            ENDDO
69         ENDDO         ENDDO
70        ENDDO        ENDIF
71    
72        RETURN        RETURN
73        END        END
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