pkg/mom_fluxform/mom_v_metric_nh.F

C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_metric_nh.F,v 1.7 2005/06/22 00:32:38 jmc Exp $
C $Name:  $

#include "MOM_FLUXFORM_OPTIONS.h"

CBOP
C !ROUTINE: MOM_V_METRIC_NH

C !INTERFACE: ==========================================================
      SUBROUTINE MOM_V_METRIC_NH(
     I        bi,bj,k,
     I        vFld,wFld,
     O        vMetricTerms,
     I        myThid)

C !DESCRIPTION:
C Calculates the zonal metric term due to non-hydrostaticity on the sphere:
C \begin{equation}
C -\frac{v}{a} \overline{w}^{jk} 
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  vFld                 :: merdional flow 
C  wFld                 :: vertical flow
C  myThid               :: thread number
      INTEGER bi,bj,k
      _RL vFld(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  vMetricTerms         :: metric term
      _RL vMetricTerms(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+1,sNy+Oly
       DO i=1-Olx,sNx+Olx
         vMetricTerms(i,j) = vFld(i,j)*recip_RSphere
     &    *0.25*(wVelBottomOverride*
     &           (wFld(i,j,kp1,bi,bj)+wFld(i,j-1,kp1,bi,bj))
     &           +wFld(i,j, k ,bi,bj)+wFld(i,j-1, k ,bi,bj)
     &          )*recip_horiVertRatio*gravitySign
       ENDDO
      ENDDO

      RETURN
      END
1	jmc	1.8	C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_metric_nh.F,v 1.7 2005/06/22 00:32:38 jmc Exp $
2	adcroft	1.3	C $Name: $
3	adcroft	1.2
4	edhill	1.5	#include "MOM_FLUXFORM_OPTIONS.h"
5	adcroft	1.2
6	adcroft	1.3	CBOP
7			C !ROUTINE: MOM_V_METRIC_NH
8
9			C !INTERFACE: ==========================================================
10	adcroft	1.2	SUBROUTINE MOM_V_METRIC_NH(
11			I bi,bj,k,
12			I vFld,wFld,
13			O vMetricTerms,
14			I myThid)
15	adcroft	1.3
16			C !DESCRIPTION:
17			C Calculates the zonal metric term due to non-hydrostaticity on the sphere:
18			C \begin{equation}
19			C -\frac{v}{a} \overline{w}^{jk}
20			C \end{equation}
21
22			C !USES: ===============================================================
23	adcroft	1.2	IMPLICIT NONE
24			#include "SIZE.h"
25			#include "EEPARAMS.h"
26			#include "PARAMS.h"
27			#include "GRID.h"
28
29	adcroft	1.3	C !INPUT PARAMETERS: ===================================================
30			C bi,bj :: tile indices
31			C k :: vertical level
32			C vFld :: merdional flow
33			C wFld :: vertical flow
34			C myThid :: thread number
35	adcroft	1.2	INTEGER bi,bj,k
36			_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
37			_RL wFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
38	adcroft	1.3	INTEGER myThid
39
40			C !OUTPUT PARAMETERS: ==================================================
41			C vMetricTerms :: metric term
42	adcroft	1.2	_RL vMetricTerms(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
43
44	adcroft	1.3	C !LOCAL VARIABLES: ====================================================
45			C i,j :: loop indices
46			INTEGER i,j,Kp1
47	adcroft	1.2	_RL wVelBottomOverride
48	adcroft	1.3	CEOP
49	adcroft	1.2
50			Kp1=min(k+1,Nr)
51			wVelBottomOverride=1.
52			IF (k.EQ.Nr) wVelBottomOverride=0.
53
54			DO j=1-Olx+1,sNy+Oly
55			DO i=1-Olx,sNx+Olx
56	jmc	1.6	vMetricTerms(i,j) = vFld(i,j)*recip_RSphere
57	adcroft	1.2	& 0.25(wVelBottomOverride*
58			& (wFld(i,j,kp1,bi,bj)+wFld(i,j-1,kp1,bi,bj))
59			& +wFld(i,j, k ,bi,bj)+wFld(i,j-1, k ,bi,bj)
60	jmc	1.7	& )recip_horiVertRatiogravitySign
61	adcroft	1.2	ENDDO
62			ENDDO
63
64			RETURN
65			END