/[MITgcm]/MITgcm/verification/aim.5l_cs/code/mom_vi_coriolis.F
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Revision 1.1 - (hide annotations) (download)
Wed Jan 9 00:28:56 2002 UTC (22 years, 4 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint46n_post, checkpoint44e_post, checkpoint47j_post, checkpoint48d_pre, checkpoint44b_post, branch-exfmods-tag, checkpoint47e_post, checkpoint43a-release1mods, checkpoint47i_post, checkpoint46l_post, checkpoint47f_post, checkpoint47c_post, checkpoint50e_post, checkpoint50c_post, checkpoint46i_post, checkpoint47d_post, checkpoint47a_post, checkpoint46f_post, checkpoint46d_pre, checkpoint48e_post, checkpoint46e_post, checkpoint48d_post, checkpoint50g_post, release1-branch_tutorials, checkpoint46c_post, checkpoint50b_pre, checkpoint46e_pre, checkpoint48f_post, checkpoint45d_post, checkpoint46j_pre, checkpoint45b_post, checkpoint44g_post, checkpoint48c_post, chkpt44a_pre, release1-branch-end, release1_final_v1, checkpoint51b_post, checkpoint44b_pre, checkpoint46c_pre, checkpoint46, checkpoint47, checkpoint44, checkpoint45, checkpoint48, checkpoint49, checkpoint44f_post, checkpoint47b_post, checkpoint48i_post, checkpoint46h_post, checkpoint46l_pre, checkpoint44h_pre, checkpoint48h_post, checkpoint50d_pre, chkpt44d_post, checkpoint46h_pre, checkpoint51, checkpoint50, checkpoint47h_post, checkpoint50d_post, checkpoint46g_pre, checkpoint51b_pre, checkpoint46a_post, checkpoint47g_post, chkpt44a_post, chkpt44c_post, checkpoint46m_post, checkpoint46j_post, checkpoint44f_pre, checkpoint46a_pre, checkpoint50c_pre, checkpoint45c_post, checkpoint46k_post, checkpoint44e_pre, checkpoint46b_pre, checkpoint46b_post, checkpoint44h_post, checkpoint46d_post, checkpoint48b_post, checkpoint50b_post, checkpoint46g_post, checkpoint51c_post, checkpoint45a_post, checkpoint50f_post, checkpoint50a_post, checkpoint50f_pre, checkpoint51d_post, checkpoint48c_pre, release1-branch_branchpoint, checkpoint47d_pre, checkpoint51a_post, checkpoint50e_pre, checkpoint50i_post, checkpoint48g_post, chkpt44c_pre, checkpoint48a_post
Branch point for: release1, release1_final, release1-branch, branch-exfmods-curt 
modified momentum_VI and Shapiro S/R :
 enable AIM to run on Cube Sphere with partial cell.
1 jmc 1.1 C $Header: /u/gcmpack/models/MITgcmUV/pkg/mom_vecinv/mom_vi_coriolis.F,v 1.3 2001/09/05 17:46:03 heimbach Exp $
2     C $Name: $
3    
4     #include "CPP_OPTIONS.h"
5    
6     SUBROUTINE MOM_VI_CORIOLIS(
7     I bi,bj,K,
8     I uFld,vFld,omega3,hFacZ,r_hFacZ,
9     O uCoriolisTerm,vCoriolisTerm,
10     I myThid)
11     IMPLICIT NONE
12     C /==========================================================\
13     C | S/R VORTICITY_X_V |
14     C |==========================================================|
15     C \==========================================================/
16    
17     C == Global variables ==
18     #include "SIZE.h"
19     #include "EEPARAMS.h"
20     #include "GRID.h"
21     #include "PARAMS.h"
22    
23     C == Routine arguments ==
24     INTEGER bi,bj,K
25     _RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
26     _RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
27     _RL omega3(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
28     _RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
29     _RS r_hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
30     _RL uCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
31     _RL vCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
32     INTEGER myThid
33    
34     C == Local variables ==
35     INTEGER I,J
36     _RL vBarXY,uBarXY,vort3u,vort3v
37     _RS epsil
38     epsil = 1. _d -9
39    
40     IF (useJamartWetPoints) THEN
41     C- Partial-cell generalization of the Wet-point average method :
42     DO J=1-Oly,sNy+Oly-1
43     DO I=2-Olx,sNx+Olx
44     c vBarXY=0.25*(vFld( i ,j)+vFld( i ,j+1)
45     c & +vFld(i-1,j)+vFld(i-1,j+1))
46     vBarXY=(
47     & vFld( i , j )*dxG( i , j ,bi,bj)*hFacS( i , j ,k,bi,bj)
48     & +vFld( i ,j+1)*dxG( i ,j+1,bi,bj)*hFacS( i ,j+1,k,bi,bj)
49     & +vFld(i-1, j )*dxG(i-1, j ,bi,bj)*hFacS(i-1, j ,k,bi,bj)
50     & +vFld(i-1,j+1)*dxG(i-1,j+1,bi,bj)*hFacS(i-1,j+1,k,bi,bj) )
51     & / MAX( epsil, hFacS( i , j ,k,bi,bj)+hFacS(i-1, j ,k,bi,bj)
52     & +hFacS( i ,j+1,k,bi,bj)+hFacS(i-1,j+1,k,bi,bj) )
53     uCoriolisTerm(i,j)=
54     & +0.5*( fCoriG(i,j,bi,bj)+fCoriG(i,j+1,bi,bj)
55     & )*vBarXY*recip_dxC(i,j,bi,bj)*_maskW(I,J,K,bi,bj)
56     C original version:
57     c vort3u=0.5*(omega3(i,j)+omega3(i,j+1))
58     c vort3u=0.5*(omega3(i,j)*r_hFacZ(i,j)
59     c & +omega3(i,j+1)*r_hFacZ(i,j+1))
60     c uCoriolisTerm(i,j)=
61     c & +0.5*( fCoriG(i,j,bi,bj)*r_hFacZ(i,j)
62     c & +fCoriG(i,j+1,bi,bj)*r_hFacZ(i,j+1)
63     c & )*vBarXY*recip_dxC(i,j,bi,bj)*_maskW(I,J,K,bi,bj)
64     cph *note* put these comments after end of continued line
65     cph to ensure TAMC compatibility
66     C high order vorticity advection term
67     c & +vort3u*vBarXY*recip_dxc(i,j,bi,bj)
68     C linear Coriolis term (enstrophy conserving)
69     c & ...
70     C full nonlinear Coriolis term
71     c & +0.5*(omega3(i,j)+omega3(i,j+1))*vBarXY
72     C correct energy conserving form of Coriolis term
73     c & +0.25*( fCori( i ,j,bi,bj)*(vFld( i ,j)+vFld( i ,j+1)) +
74     c & fCori(i-1,j,bi,bj)*(vFld(i-1,j)+vFld(i-1,j+1)) )
75     C original form of Coriolis term (copied from calc_mom_rhs)
76     c & +0.5*(fCori(i,j,bi,bj)+fCori(i-1,j,bi,bj))*vBarXY
77     ENDDO
78     ENDDO
79     ELSE
80     C- Simple average, no hFac :
81     DO J=1-Oly,sNy+Oly-1
82     DO I=2-Olx,sNx+Olx
83     vBarXY=0.25*(
84     & vFld( i , j )*dxG( i , j ,bi,bj)
85     & +vFld( i ,j+1)*dxG( i ,j+1,bi,bj)
86     & +vFld(i-1, j )*dxG(i-1, j ,bi,bj)
87     & +vFld(i-1,j+1)*dxG(i-1,j+1,bi,bj) )
88     uCoriolisTerm(i,j)=
89     & +0.5*( fCoriG(i,j,bi,bj)+fCoriG(i,j+1,bi,bj)
90     & )*vBarXY*recip_dxC(i,j,bi,bj)*_maskW(I,J,K,bi,bj)
91     ENDDO
92     ENDDO
93     ENDIF
94    
95     IF (useJamartWetPoints) THEN
96     C- Partial-cell generalization of the Wet-point average method :
97     DO J=2-Oly,sNy+Oly
98     DO I=1-Olx,sNx+Olx-1
99     c uBarXY=0.25*( uFld(i, j )+uFld(i+1, j )
100     c & +uFld(i,j-1)+uFld(i+1,j-1))
101     uBarXY=(
102     & uFld( i , j )*dyG( i , j ,bi,bj)*hFacW( i , j ,k,bi,bj)
103     & +uFld( i ,j-1)*dyG( i ,j-1,bi,bj)*hFacW( i ,j-1,k,bi,bj)
104     & +uFld(i+1, j )*dyG(i+1, j ,bi,bj)*hFacW(i+1, j ,k,bi,bj)
105     & +uFld(i+1,j-1)*dyG(i+1,j-1,bi,bj)*hFacW(i+1,j-1,k,bi,bj) )
106     & / MAX( epsil, hFacW( i , j ,k,bi,bj)+hFacW( i ,j-1,k,bi,bj)
107     & +hFacW(i+1, j ,k,bi,bj)+hFacW(i+1,j-1,k,bi,bj) )
108     vCoriolisTerm(i,j)=
109     & -0.5*( fCoriG(i,j,bi,bj)+fCoriG(i+1,j,bi,bj)
110     & )*uBarXY*recip_dyC(i,j,bi,bj)*_maskS(I,J,K,bi,bj)
111     C original version:
112     c vort3v=0.5*(omega3(i,j)+omega3(i+1,j))
113     c vort3v=0.5*(omega3(i,j)*r_hFacZ(i,j)
114     c & +omega3(i+1,j)*r_hFacZ(i+1,j))
115     c vCoriolisTerm(i,j)=
116     c & -0.5*( fCoriG(i,j,bi,bj)*r_hFacZ(i,j)
117     c & +fCoriG(i+1,j,bi,bj)*r_hFacZ(i+1,j)
118     c & )*uBarXY*recip_dyC(i,j,bi,bj)*_maskS(I,J,K,bi,bj)
119     cph *note* put these comments after end of continued line
120     cph to ensure TAMC compatibility
121     C high order vorticity advection term
122     c & -vort3v*uBarXY*recip_dyc(i,j,bi,bj)
123     C linear Coriolis term (enstrophy conserving)
124     c & ...
125     C full nonlinear Coriolis term
126     c & -0.5*(omega3(i,j)+omega3(i+1,j))*uBarXY
127     C correct energy conserving form of Coriolis term
128     c & -0.25*( fCori(i,j ,bi,bj)*(uFld(i, j )+uFld(i+1,j)) +
129     c & fCori(i,j-1,bi,bj)*(uFld(i,j-1)+uFld(i+1,j)) )
130     C original form of Coriolis term (copied from calc_mom_rhs)
131     c & -0.5*(fCori(i,j,bi,bj)+fCori(i,j-1,bi,bj))*uBarXY
132     ENDDO
133     ENDDO
134     ELSE
135     C- Simple average, no hFac :
136     DO J=2-Oly,sNy+Oly
137     DO I=1-Olx,sNx+Olx-1
138     uBarXY=0.25*(
139     & uFld( i , j )*dyG( i , j ,bi,bj)
140     & +uFld( i ,j-1)*dyG( i ,j-1,bi,bj)
141     & +uFld(i+1, j )*dyG(i+1, j ,bi,bj)
142     & +uFld(i+1,j-1)*dyG(i+1,j-1,bi,bj) )
143     vCoriolisTerm(i,j)=
144     & -0.5*( fCoriG(i,j,bi,bj)+fCoriG(i+1,j,bi,bj)
145     & )*uBarXY*recip_dyC(i,j,bi,bj)*_maskS(I,J,K,bi,bj)
146     ENDDO
147     ENDDO
148     ENDIF
149    
150     RETURN
151     END
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