/[MITgcm]/MITgcm/pkg/mom_fluxform/mom_v_coriolis.F
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Contents of /MITgcm/pkg/mom_fluxform/mom_v_coriolis.F

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Revision 1.4.4.1 - (show annotations) (download)
Wed Feb 6 15:48:09 2002 UTC (22 years, 4 months ago) by heimbach
Branch: ecco-branch
CVS Tags: ecco_c50_e32, ecco_c50_e33, ecco_c50_e30, ecco_c50_e31, ecco_c51_e34d, ecco_c51_e34e, ecco_c51_e34f, ecco_c51_e34g, ecco_c51_e34a, ecco_c51_e34b, ecco_c51_e34c, icebear5, icebear4, icebear3, icebear2, ecco_c50_e29, ecco_c50_e28, ecco_c44_e19, ecco_c44_e18, ecco_c44_e17, ecco_c44_e16, ecco_c50_e33a, ecco_c51_e34, ecco_ice2, ecco_ice1, ecco_c44_e22, ecco_c44_e25, ecco_c44_e23, ecco_c44_e20, ecco_c44_e21, ecco_c44_e26, ecco_c44_e27, ecco_c44_e24, ecco-branch-mod2, ecco-branch-mod3, ecco-branch-mod4, ecco-branch-mod5
Branch point for: c24_e25_ice, icebear
Changes since 1.4: +17 -2 lines
Updating ecco-branch-mod1 to checkpoint44.
Will be tagged ecco-branch-mod2.

1 C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_coriolis.F,v 1.7 2001/11/26 17:15:56 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 _RL one
47 PARAMETER(one=1.d0)
48 CEOP
49
50 IF (useEnergyConservingCoriolis) THEN
51 C Energy conserving discretization
52 DO j=1-Oly+1,sNy+Oly
53 DO i=1-Olx,sNx+Olx-1
54 vCoriolisTerm(i,j) =
55 & -0.5*( _fCori(i, j ,bi,bj)
56 & *0.5*( uFld( i , j )+uFld(i+1, j ) )
57 & + _fCori(i,j-1,bi,bj)
58 & *0.5*( uFld( i ,j-1)+uFld(i+1,j-1) ) )
59 ENDDO
60 ENDDO
61 ELSE
62 C Original discretization
63 DO j=1-Oly+1,sNy+Oly
64 DO i=1-Olx,sNx+Olx-1
65 vCoriolisTerm(i,j) =
66 & -0.5*(_fCori(i, j ,bi,bj)+_fCori(i,j-1,bi,bj))
67 & *0.25*( uFld(i, j )+uFld(i+1, j )
68 & +uFld(i,j-1)+uFld(i+1,j-1)
69 & )
70 ENDDO
71 ENDDO
72 ENDIF
73
74 IF (useJamartWetPoints) THEN
75 C Scale term so that only "wet" points are used
76 C Due to: Jamart and Ozer, 1986, JGR 91 (C9), 10,621-10,631
77 C "Numerical Boundary Layers and Spurious Residual Flows"
78 DO j=1-Oly+1,sNy+Oly
79 DO i=1-Olx,sNx+Olx-1
80 vCoriolisTerm(i,j) = vCoriolisTerm(i,j)
81 & *4.d0/max(one, maskW( i , j ,k,bi,bj)+maskW(i+1, j ,k,bi,bj)
82 & +maskW( i ,j-1,k,bi,bj)+maskW(i+1,j-1,k,bi,bj) )
83 ENDDO
84 ENDDO
85 ENDIF
86
87 RETURN
88 END

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