pkg/mom_fluxform/mom_v_metric_sphere.F

C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_metric_sphere.F,v 1.4 2003/10/09 04:19:20 edhill Exp $
C $Name:  $

#include "MOM_FLUXFORM_OPTIONS.h"

CBOP
C !ROUTINE: MOM_V_METRIC_SPHERE

C !INTERFACE: ==========================================================
      SUBROUTINE MOM_V_METRIC_SPHERE(
     I        bi,bj,k,
     I        uFld,
     O        vMetricTerms,
     I        myThid )

C !DESCRIPTION:
C Calculates the meridional metric term due to sphericity:
C \begin{equation}
C \frac{1}{a} \overline{u}^{ij} \overline{u}^{ij} \tan{\phi}
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  myThid               :: thread number
      INTEGER bi,bj,k
      _RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
      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
CEOP

      DO j=1-Olx+1,sNy+Oly
       DO i=1-Olx,sNx+Olx-1
         vMetricTerms(i,j) = -recip_rSphere*recip_deepFacC(k)
     &    *0.25*( uFld(i,j  )+uFld(i+1,j  )
     &           +uFld(i,j-1)+uFld(i+1,j-1)
     &          )
     &    *0.25*( uFld(i,j  )+uFld(i+1,j  )
     &           +uFld(i,j-1)+uFld(i+1,j-1)
     &          )
     &    *_tanPhiAtV(i,j,bi,bj)
       ENDDO
      ENDDO

      RETURN
      END
1	jmc	1.5	C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_metric_sphere.F,v 1.4 2003/10/09 04:19:20 edhill Exp $
2	adcroft	1.3	C $Name: $
3	adcroft	1.2
4	edhill	1.4	#include "MOM_FLUXFORM_OPTIONS.h"
5	adcroft	1.2
6	adcroft	1.3	CBOP
7			C !ROUTINE: MOM_V_METRIC_SPHERE
8
9			C !INTERFACE: ==========================================================
10	adcroft	1.2	SUBROUTINE MOM_V_METRIC_SPHERE(
11			I bi,bj,k,
12			I uFld,
13			O vMetricTerms,
14	jmc	1.5	I myThid )
15	adcroft	1.3
16			C !DESCRIPTION:
17			C Calculates the meridional metric term due to sphericity:
18			C \begin{equation}
19			C \frac{1}{a} \overline{u}^{ij} \overline{u}^{ij} \tan{\phi}
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	jmc	1.5	C uFld :: zonal flow
33	adcroft	1.3	C myThid :: thread number
34	adcroft	1.2	INTEGER bi,bj,k
35			_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
36	adcroft	1.3	INTEGER myThid
37
38			C !OUTPUT PARAMETERS: ==================================================
39			C vMetricTerms :: metric term
40	adcroft	1.2	_RL vMetricTerms(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
41
42	adcroft	1.3	C !LOCAL VARIABLES: ====================================================
43			C i,j :: loop indices
44			INTEGER i,j
45			CEOP
46	adcroft	1.2
47			DO j=1-Olx+1,sNy+Oly
48			DO i=1-Olx,sNx+Olx-1
49	jmc	1.5	vMetricTerms(i,j) = -recip_rSphere*recip_deepFacC(k)
50	adcroft	1.2	& 0.25( uFld(i,j )+uFld(i+1,j )
51			& +uFld(i,j-1)+uFld(i+1,j-1)
52			& )
53			& 0.25( uFld(i,j )+uFld(i+1,j )
54			& +uFld(i,j-1)+uFld(i+1,j-1)
55			& )
56			& *_tanPhiAtV(i,j,bi,bj)
57			ENDDO
58			ENDDO
59
60			RETURN
61			END