/[MITgcm]/MITgcm/pkg/mom_fluxform/mom_calc_rtrans.F
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Revision 1.3 - (hide annotations) (download)
Tue Oct 19 02:43:06 2004 UTC (19 years, 7 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint57m_post, checkpoint57g_pre, checkpoint57s_post, checkpoint57b_post, checkpoint57g_post, checkpoint56b_post, checkpoint57r_post, checkpoint57d_post, checkpoint57i_post, checkpoint57, checkpoint56, checkpoint57n_post, checkpoint55i_post, checkpoint57l_post, checkpoint57t_post, checkpoint57v_post, checkpoint57f_post, checkpoint57a_post, checkpoint57h_pre, checkpoint57h_post, checkpoint57y_pre, checkpoint57c_post, checkpoint57c_pre, checkpoint55j_post, checkpoint55h_post, checkpoint57e_post, checkpoint57p_post, checkpint57u_post, checkpoint57q_post, eckpoint57e_pre, checkpoint56a_post, checkpoint57h_done, checkpoint57j_post, checkpoint57f_pre, checkpoint56c_post, checkpoint57a_pre, checkpoint57o_post, checkpoint57k_post, checkpoint57w_post, checkpoint57x_post
Changes since 1.2: +2 -3 lines 
use flags: fluidIsAir/Water, usingP/ZCoords instead of buoyancyRelation
1 jmc 1.3 C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_calc_rtrans.F,v 1.2 2003/10/09 04:19:20 edhill Exp $
2 jmc 1.1 C $Name: $
3    
4 edhill 1.2 #include "MOM_FLUXFORM_OPTIONS.h"
5 jmc 1.1
6     CBOP
7     C !ROUTINE: MOM_CALC_RTRANS
8     C !INTERFACE:
9     SUBROUTINE MOM_CALC_RTRANS(
10     I k, bi, bj,
11     O rTransU, rTransV,
12     I myTime, myIter, myThid)
13     C !DESCRIPTION: \bv
14     C *==========================================================*
15     C | SUBROUTINE MOM_CALC_RTRANS
16     C | o Calculate vertical transports at interface k
17     C | above U & V points (West & South face)
18     C *==========================================================*
19     C | r coordinate (z or p):
20     C | is simply half of the 2 vert. Transp at Center location
21     C | r* coordinate: less simple since
22     C | d.eta/dt / H has to be evaluated locally at U & V points
23     C *==========================================================*
24     C \ev
25    
26     C !USES:
27     IMPLICIT NONE
28     C == GLobal variables ==
29     #include "SIZE.h"
30     #include "DYNVARS.h"
31     #include "EEPARAMS.h"
32     #include "PARAMS.h"
33     #include "GRID.h"
34     #include "SURFACE.h"
35    
36     C !INPUT/OUTPUT PARAMETERS:
37     C == Routine arguments ==
38     C k :: vertical level
39     C bi,bj :: tile indices
40     C rTransU :: vertical transport (above U point)
41     C rTransV :: vertical transport (above V point)
42     C myTime :: current time
43     C myIter :: current iteration number
44     C myThid :: thread number
45     C
46     INTEGER k, bi, bj, myIter, myThid
47     _RL myTime
48     _RL rTransU(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
49     _RL rTransV(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
50    
51     C !LOCAL VARIABLES:
52     #ifdef NONLIN_FRSURF
53     C == Local variables in common block ==
54     C dWtransC :: vertical transp. difference between r & r* coordinates
55     C dWtransU :: same but above u.point location (West face)
56     C dWtransV :: same but above v.point location (South face)
57     COMMON /LOCAL_MOM_CALC_RTRANS/
58     & dWtransC, dWtransU, dWtransV
59     _RL dWtransC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
60     _RL dWtransU(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
61     _RL dWtransV(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
62     #endif /* NONLIN_FRSURF */
63     C == Local variables ==
64     C I, J :: Loop counters
65     INTEGER i,j
66     CEOP
67    
68     #ifdef NONLIN_FRSURF
69     IF ( k.EQ.Nr+1 .AND.
70 jmc 1.3 & useRealFreshWaterFlux .AND. usingPCoords ) THEN
71 jmc 1.1 DO j=1-OLy+1,sNy+OLy
72     DO i=1-OLx+1,sNx+OLx
73     rTransU(i,j) = convertEmP2rUnit*
74     & 0.5 _d 0*( PmEpR( i ,j,bi,bj)*rA( i ,j,bi,bj)
75     & +PmEpR(i-1,j,bi,bj)*rA(i-1,j,bi,bj) )
76     rTransV(i,j) = convertEmP2rUnit*
77     & 0.5 _d 0*( PmEpR(i, j ,bi,bj)*rA(i, j ,bi,bj)
78     & +PmEpR(i,j-1,bi,bj)*rA(i,j-1,bi,bj) )
79     ENDDO
80     ENDDO
81     ELSEIF ( k.GT.Nr ) THEN
82     #else /* NONLIN_FRSURF */
83     IF ( k.GT.Nr ) THEN
84     #endif /* NONLIN_FRSURF */
85     DO j=1-OLy+1,sNy+OLy
86     DO i=1-OLx+1,sNx+OLx
87     rTransU(i,j) = 0.
88     rTransV(i,j) = 0.
89     ENDDO
90     ENDDO
91     ELSE
92     C- Calculate vertical transports above U & V points (West & South face):
93     DO j=1-OLy+1,sNy+OLy
94     DO i=1-OLx+1,sNx+OLx
95     rTransU(i,j) =
96     & 0.5 _d 0*( wVel(i-1,j,k,bi,bj)*rA(i-1,j,bi,bj)
97     & +wVel( i ,j,k,bi,bj)*rA( i ,j,bi,bj) )
98     rTransV(i,j) =
99     & 0.5 _d 0*( wVel(i,j-1,k,bi,bj)*rA(i,j-1,bi,bj)
100     & +wVel(i, j ,k,bi,bj)*rA(i, j ,bi,bj) )
101     ENDDO
102     ENDDO
103     ENDIF
104    
105     #ifdef NONLIN_FRSURF
106     C--- Modify rTransU & rTransV when using r* coordinate:
107     IF ( select_rStar.NE.0 ) THEN
108    
109     IF ( k.EQ.1) THEN
110     C- Initialise dWtrans :
111     DO j=1-OLy,sNy+OLy
112     DO i=1-OLx,sNx+OLx
113     dWtransC(i,j,bi,bj) = rStarDhCDt(i,j,bi,bj)
114     & *(Ro_surf(i,j,bi,bj)-R_low(i,j,bi,bj))
115     & *rA(i,j,bi,bj)
116     ENDDO
117     ENDDO
118     DO j=1-OLy+1,sNy+OLy
119     DO i=1-OLx+1,sNx+OLx
120     dWtransU(i,j,bi,bj) =
121     & 0.5 _d 0*(dWtransC(i-1,j,bi,bj)+dWtransC(i,j,bi,bj))
122     dWtransV(i,j,bi,bj) =
123     & 0.5 _d 0*(dWtransC(i,j-1,bi,bj)+dWtransC(i,j,bi,bj))
124     ENDDO
125     ENDDO
126    
127     ELSEIF (k.LE.Nr) THEN
128     C- Update dWtrans from previous value (interface k-1):
129     DO j=1-OLy,sNy+OLy
130     DO i=1-OLx,sNx+OLx
131     dWtransC(i,j,bi,bj) = dWtransC(i,j,bi,bj)
132     & - rStarDhCDt(i,j,bi,bj)*drF(k-1)*h0FacC(i,j,k-1,bi,bj)
133     & *rA(i,j,bi,bj)
134     ENDDO
135     ENDDO
136     DO j=1-OLy+1,sNy+OLy
137     DO i=1-OLx+1,sNx+OLx
138     dWtransU(i,j,bi,bj) = dWtransU(i,j,bi,bj)
139     & - rStarDhWDt(i,j,bi,bj)*drF(k-1)*h0FacW(i,j,k-1,bi,bj)
140     & *rAw(i,j,bi,bj)
141     dWtransV(i,j,bi,bj) = dWtransV(i,j,bi,bj)
142     & - rStarDhSDt(i,j,bi,bj)*drF(k-1)*h0FacS(i,j,k-1,bi,bj)
143     & *rAs(i,j,bi,bj)
144     ENDDO
145     ENDDO
146     C- Modify rTransU & rTransV :
147     DO j=1-OLy+1,sNy+OLy
148     DO i=1-OLx+1,sNx+OLx
149     rTransU(i,j) = rTransU(i,j)-dWtransU(i,j,bi,bj)
150     & + (dWtransC(i-1,j,bi,bj)+dWtransC(i,j,bi,bj))*0.5 _d 0
151     rTransV(i,j) = rTransV(i,j)-dWtransV(i,j,bi,bj)
152     & + (dWtransC(i,j-1,bi,bj)+dWtransC(i,j,bi,bj))*0.5 _d 0
153     ENDDO
154     ENDDO
155    
156     ENDIF
157    
158     ENDIF
159     #endif /* NONLIN_FRSURF */
160    
161     RETURN
162     END
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