pkg/mom_common/mom_u_coriolis_nh.F

C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_u_coriolis_nh.F,v 1.1 2006/03/30 19:44:19 jmc Exp $
C $Name:  $

#include "MOM_COMMON_OPTIONS.h"

CBOP
C !ROUTINE: MOM_U_CORIOLIS_NH

C !INTERFACE: ==========================================================
      SUBROUTINE MOM_U_CORIOLIS_NH(
     I               bi,bj,k,wFld,
     O               uCoriolisTerm,
     I               myThid )

C !DESCRIPTION:
C Calculates the 3.D Coriolis term in the zonal momentum equation:
C \begin{equation*}
C - \overline{ f' \overline{w}^{k} }^{i}
C \end{equation*}
C consistent with Non-Hydrostatic (or quasi-hydrostatic) formulation

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

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

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

C !LOCAL VARIABLES: ====================================================
C  i,j                  :: loop indices
      INTEGER i,j,kp1
      _RL wMsk
CEOP


      kp1=min(k+1,Nr)
      wMsk=1.
      IF (k.EQ.Nr) wMsk=0.

C Energy conserving discretization of 2*Omega*cos(phi)*w
      DO j=1-Oly,sNy+Oly
       DO i=2-Olx,sNx+Olx
        uCoriolisTerm(i,j) =
     &    0.5*( fCoriCos( i ,j,bi,bj)*angleCosC( i ,j,bi,bj)
     &         *0.5*( wFld( i ,j, k ,bi,bj)*rVel2wUnit( k )
     &               +wFld( i ,j,kp1,bi,bj)*rVel2wUnit(kp1)*wMsk )
     &        + fCoriCos(i-1,j,bi,bj)*angleCosC(i-1,j,bi,bj)
     &         *0.5*( wFld(i-1,j, k ,bi,bj)*rVel2wUnit( k )
     &               +wFld(i-1,j,kp1,bi,bj)*rVel2wUnit(kp1)*wMsk )
     &        )*gravitySign
       ENDDO
      ENDDO

      RETURN
      END
1	C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_u_coriolis_nh.F,v 1.1 2006/03/30 19:44:19 jmc Exp $
2	C $Name: $
3
4	#include "MOM_COMMON_OPTIONS.h"
5
6	CBOP
7	C !ROUTINE: MOM_U_CORIOLIS_NH
8
9	C !INTERFACE: ==========================================================
10	SUBROUTINE MOM_U_CORIOLIS_NH(
11	I bi,bj,k,wFld,
12	O uCoriolisTerm,
13	I myThid )
14
15	C !DESCRIPTION:
16	C Calculates the 3.D Coriolis term in the zonal momentum equation:
17	C \begin{equation*}
18	C - \overline{ f' \overline{w}^{k} }^{i}
19	C \end{equation*}
20	C consistent with Non-Hydrostatic (or quasi-hydrostatic) formulation
21
22	C !USES: ===============================================================
23	IMPLICIT NONE
24	#include "SIZE.h"
25	#include "EEPARAMS.h"
26	#include "PARAMS.h"
27	#include "GRID.h"
28
29	C !INPUT PARAMETERS: ===================================================
30	C bi,bj :: tile indices
31	C k :: vertical level
32	C wFld :: vertical flow
33	C myThid :: thread number
34	INTEGER bi,bj,k
35	_RL wFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
36	INTEGER myThid
37
38	C !OUTPUT PARAMETERS: ==================================================
39	C uCoriolisTerm :: Coriolis term
40	_RL uCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
41
42	C !LOCAL VARIABLES: ====================================================
43	C i,j :: loop indices
44	INTEGER i,j,kp1
45	_RL wMsk
46	CEOP
47
48
49	kp1=min(k+1,Nr)
50	wMsk=1.
51	IF (k.EQ.Nr) wMsk=0.
52
53	C Energy conserving discretization of 2Omegacos(phi)*w
54	DO j=1-Oly,sNy+Oly
55	DO i=2-Olx,sNx+Olx
56	uCoriolisTerm(i,j) =
57	& 0.5( fCoriCos( i ,j,bi,bj)angleCosC( i ,j,bi,bj)
58	& 0.5( wFld( i ,j, k ,bi,bj)*rVel2wUnit( k )
59	& +wFld( i ,j,kp1,bi,bj)rVel2wUnit(kp1)wMsk )
60	& + fCoriCos(i-1,j,bi,bj)*angleCosC(i-1,j,bi,bj)
61	& 0.5( wFld(i-1,j, k ,bi,bj)*rVel2wUnit( k )
62	& +wFld(i-1,j,kp1,bi,bj)rVel2wUnit(kp1)wMsk )
63	& )*gravitySign
64	ENDDO
65	ENDDO
66
67	RETURN
68	END