pkg/mom_common/mom_u_metric_nh.F

C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_u_metric_nh.F,v 1.1 2006/03/30 19:37:54 jmc Exp $
C $Name:  $

#include "MOM_COMMON_OPTIONS.h"

CBOP
C !ROUTINE: MOM_U_METRIC_NH

C !INTERFACE: ==========================================================
      SUBROUTINE MOM_U_METRIC_NH(
     I               bi,bj,k,
     I               uFld, wFld,
     O               uMetricTerms,
     I               myThid )

C !DESCRIPTION:
C Calculates the zonal metric term due to non-hydrostaticity on the sphere:
C \begin{equation}
C -\frac{u}{a} \overline{w}^{ik}
C \end{equation}

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  uFld                 :: zonal flow
C  wFld                 :: vertical flow
C  myThid               :: thread number
      INTEGER bi,bj,k
      _RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      _RL wFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
      INTEGER myThid

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

C !LOCAL VARIABLES: ====================================================
C  i,j                  :: loop indices
      INTEGER i,j,Kp1
      _RL wVelBottomOverride
CEOP

      Kp1=min(k+1,Nr)
      wVelBottomOverride=1.
      IF (k.EQ.Nr) wVelBottomOverride=0.

      DO j=1-Olx,sNy+Oly
       DO i=1-Olx+1,sNx+Olx
         uMetricTerms(i,j) = uFld(i,j)*recip_rSphere*recip_deepFacC(k)
     &    *0.25*(wVelBottomOverride*
     &            (wFld(i-1,j,kp1,bi,bj)+wFld(i,j,kp1,bi,bj))
     &            +wFld(i-1,j, k ,bi,bj)+wFld(i,j, k ,bi,bj)
     &          )*recip_horiVertRatio*gravitySign
       ENDDO
      ENDDO

      RETURN
      END
1	C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_u_metric_nh.F,v 1.1 2006/03/30 19:37:54 jmc Exp $
2	C $Name: $
3
4	#include "MOM_COMMON_OPTIONS.h"
5
6	CBOP
7	C !ROUTINE: MOM_U_METRIC_NH
8
9	C !INTERFACE: ==========================================================
10	SUBROUTINE MOM_U_METRIC_NH(
11	I bi,bj,k,
12	I uFld, wFld,
13	O uMetricTerms,
14	I myThid )
15
16	C !DESCRIPTION:
17	C Calculates the zonal metric term due to non-hydrostaticity on the sphere:
18	C \begin{equation}
19	C -\frac{u}{a} \overline{w}^{ik}
20	C \end{equation}
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 uFld :: zonal flow
33	C wFld :: vertical flow
34	C myThid :: thread number
35	INTEGER bi,bj,k
36	_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
37	_RL wFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
38	INTEGER myThid
39
40	C !OUTPUT PARAMETERS: ==================================================
41	C uMetricTerms :: metric term
42	_RL uMetricTerms(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
43
44	C !LOCAL VARIABLES: ====================================================
45	C i,j :: loop indices
46	INTEGER i,j,Kp1
47	_RL wVelBottomOverride
48	CEOP
49
50	Kp1=min(k+1,Nr)
51	wVelBottomOverride=1.
52	IF (k.EQ.Nr) wVelBottomOverride=0.
53
54	DO j=1-Olx,sNy+Oly
55	DO i=1-Olx+1,sNx+Olx
56	uMetricTerms(i,j) = uFld(i,j)recip_rSphererecip_deepFacC(k)
57	& 0.25(wVelBottomOverride*
58	& (wFld(i-1,j,kp1,bi,bj)+wFld(i,j,kp1,bi,bj))
59	& +wFld(i-1,j, k ,bi,bj)+wFld(i,j, k ,bi,bj)
60	& )recip_horiVertRatiogravitySign
61	ENDDO
62	ENDDO
63
64	RETURN
65	END