/[MITgcm]/MITgcm/model/src/update_sigma.F
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Revision 1.1 - (hide annotations) (download)
Sat Sep 11 21:27:13 2010 UTC (13 years, 8 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint64q, checkpoint64p, checkpoint64s, checkpoint64r, checkpoint64u, checkpoint64t, checkpoint64i, checkpoint64h, checkpoint64k, checkpoint64j, checkpoint64m, checkpoint64l, checkpoint64o, checkpoint64n, checkpoint64a, checkpoint64c, checkpoint64b, checkpoint64e, checkpoint64d, checkpoint64g, checkpoint64f, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint63a, checkpoint63b, checkpoint63c, checkpoint64, checkpoint63, checkpoint62k, checkpoint62o, checkpoint62n, checkpoint62m, checkpoint62l, checkpoint62s, checkpoint62r, checkpoint62q, checkpoint62p, checkpoint62w, checkpoint62v, checkpoint62u, checkpoint62t, checkpoint62z, checkpoint62y, checkpoint62x
sigma (and hybrid-sigma) coordinate code for non-linear free-surface

1 jmc 1.1 C $Header: /u/gcmpack/MITgcm/model/src/update_r_star.F,v 1.7 2008/08/12 22:42:33 jmc Exp $
2     C $Name: $
3    
4     #include "PACKAGES_CONFIG.h"
5     #include "CPP_OPTIONS.h"
6    
7     CBOP
8     C !ROUTINE: UPDATE_SIGMA
9     C !INTERFACE:
10     SUBROUTINE UPDATE_SIGMA( etaHc, myTime, myIter, myThid )
11     C !DESCRIPTION: \bv
12     C *==========================================================*
13     C | SUBROUTINE UPDATE_SIGMA
14     C | o Update the thickness fractions (hFacC,W,S)
15     C | according to the surface r-position = Non-Linear FrSurf
16     C *==========================================================*
17     C \ev
18    
19     C !USES:
20     IMPLICIT NONE
21     C == Global variables
22     #include "SIZE.h"
23     #include "EEPARAMS.h"
24     #include "PARAMS.h"
25     c #include "DYNVARS.h"
26     #include "GRID.h"
27     #include "SURFACE.h"
28     #ifdef ALLOW_AUTODIFF_TAMC
29     # include "tamc.h"
30     # include "tamc_keys.h"
31     #endif
32    
33     C !INPUT/OUTPUT PARAMETERS:
34     C == Routine arguments ==
35     C etaHc :: surface r-anomaly at grid cell center
36     C myTime :: Current time in simulation
37     C myIter :: Current iteration number in simulation
38     C myThid :: my Thread Id. number
39     _RL etaHc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
40     _RL myTime
41     INTEGER myIter
42     INTEGER myThid
43    
44     #ifdef NONLIN_FRSURF
45     c#ifndef DISABLE_SIGMA_CODE
46     C !LOCAL VARIABLES:
47     C Local variables
48     C bi, bj :: tile indices
49     C i, j, k :: Loop counters
50     C rEmpty :: empty column r-position
51     C rFullDepth :: maximum depth of a full column
52     C tmpFld :: Temporary array used to compute & write Total Depth
53     C msgBuf :: Informational/error message buffer
54     INTEGER bi, bj
55     INTEGER i, j, k
56     _RL rFullDepth
57     _RL tmpFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
58     c _RL hFactmp
59     c CHARACTER*(MAX_LEN_MBUF) msgBuf
60     CEOP
61    
62     rFullDepth = rF(1)-rF(Nr+1)
63    
64     DO bj=myByLo(myThid), myByHi(myThid)
65     DO bi=myBxLo(myThid), myBxHi(myThid)
66    
67     c#ifdef ALLOW_AUTODIFF_TAMC
68     c act1 = bi - myBxLo(myThid)
69     c max1 = myBxHi(myThid) - myBxLo(myThid) + 1
70     c act2 = bj - myByLo(myThid)
71     c max2 = myByHi(myThid) - myByLo(myThid) + 1
72     c act3 = myThid - 1
73     c max3 = nTx*nTy
74     c act4 = ikey_dynamics - 1
75     c idynkey = (act1 + 1) + act2*max1
76     c & + act3*max1*max2
77     c & + act4*max1*max2*max3
78     c#endif /* ALLOW_AUTODIFF_TAMC */
79    
80     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
81    
82     c#ifdef ALLOW_OBCS
83     c# ifdef ALLOW_AUTODIFF_TAMC
84     cCADJ STORE rStarFacC(:,:,bi,bj) =
85     cCADJ & comlev1_bibj, key = idynkey, byte = isbyte
86     cCADJ STORE rStarFacS(:,:,bi,bj) =
87     cCADJ & comlev1_bibj, key = idynkey, byte = isbyte
88     cCADJ STORE rStarFacW(:,:,bi,bj) =
89     cCADJ & comlev1_bibj, key = idynkey, byte = isbyte
90     c# endif /* ALLOW_AUTODIFF_TAMC */
91     cC-- Apply OBC to rStar_Factor_W,S before updating hFacW,S
92     c IF (useOBCS) THEN
93     c CALL OBCS_APPLY_R_STAR(
94     c I bi, bj,
95     c U rStarFacC, rStarFacW, rStarFacS,
96     c I myTime, myIter, myThid )
97     c ENDIF
98     c#endif /* ALLOW_OBCS */
99    
100     C-- Update the fractional thickness hFacC (& "recip_hFac") :
101     DO j=1-Oly,sNy+Oly
102     DO i=1-Olx,sNx+Olx
103     IF ( kSurfC(i,j,bi,bj).LE.Nr ) THEN
104     tmpFld(i,j) = etaHc(i,j,bi,bj)
105     & + ( Ro_surf(i,j,bi,bj)-R_low(i,j,bi,bj) )
106     ELSE
107     tmpFld(i,j) = rFullDepth
108     ENDIF
109     ENDDO
110     ENDDO
111     DO k=1,Nr
112     DO j=1-Oly,sNy+Oly
113     DO i=1-Olx,sNx+Olx
114     hFacC(i,j,k,bi,bj) = maskC(i,j,k,bi,bj)
115     & *( dAHybSigF(k)*rFullDepth
116     & +dBHybSigF(k)*tmpFld(i,j)
117     & )*recip_drF(k)
118     recip_hFacC(i,j,k,bi,bj) = maskC(i,j,k,bi,bj)*drF(k)
119     & /( dAHybSigF(k)*rFullDepth
120     & +dBHybSigF(k)*tmpFld(i,j)
121     & )
122     ENDDO
123     ENDDO
124     ENDDO
125    
126     C-- Update the fractional thickness hFacW (& "recip_hFac") :
127     DO j=1-Oly,sNy+Oly
128     DO i=1-Olx,sNx+Olx
129     IF ( kSurfW(i,j,bi,bj).LE.Nr ) THEN
130     tmpFld(i,j) = etaHw(i,j,bi,bj)
131     & + ( rSurfW(i,j,bi,bj)-rLowW(i,j,bi,bj) )
132     ELSE
133     tmpFld(i,j) = rFullDepth
134     ENDIF
135     ENDDO
136     ENDDO
137     DO k=1,Nr
138     DO j=1-Oly,sNy+Oly
139     DO i=1-Olx,sNx+Olx
140     hFacW(i,j,k,bi,bj) = maskW(i,j,k,bi,bj)
141     & *( dAHybSigF(k)*rFullDepth
142     & +dBHybSigF(k)*tmpFld(i,j)
143     & )*recip_drF(k)
144     recip_hFacW(i,j,k,bi,bj) = maskW(i,j,k,bi,bj)*drF(k)
145     & /( dAHybSigF(k)*rFullDepth
146     & +dBHybSigF(k)*tmpFld(i,j)
147     & )
148     ENDDO
149     ENDDO
150     ENDDO
151    
152     C-- Update the fractional thickness hFacS (& "recip_hFac") :
153     DO j=1-Oly,sNy+Oly
154     DO i=1-Olx,sNx+Olx
155     IF ( kSurfS(i,j,bi,bj).LE.Nr ) THEN
156     tmpFld(i,j) = etaHs(i,j,bi,bj)
157     & + ( rSurfS(i,j,bi,bj)-rLowS(i,j,bi,bj) )
158     ELSE
159     tmpFld(i,j) = rFullDepth
160     ENDIF
161     ENDDO
162     ENDDO
163     DO k=1,Nr
164     DO j=1-Oly,sNy+Oly
165     DO i=1-Olx,sNx+Olx
166     hFacS(i,j,k,bi,bj) = maskS(i,j,k,bi,bj)
167     & *( dAHybSigF(k)*rFullDepth
168     & +dBHybSigF(k)*tmpFld(i,j)
169     & )*recip_drF(k)
170     recip_hFacS(i,j,k,bi,bj) = maskS(i,j,k,bi,bj)*drF(k)
171     & /( dAHybSigF(k)*rFullDepth
172     & +dBHybSigF(k)*tmpFld(i,j)
173     & )
174     ENDDO
175     ENDDO
176     ENDDO
177    
178     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
179    
180     C- end bi,bj loop
181     ENDDO
182     ENDDO
183    
184     c _EXCH_XYZ_RS( hFacC, myThid )
185     c _EXCH_XYZ_RS( recip_hFacC, myThid )
186     c CALL EXCH_UV_XYZ_RS(hFacW,hFacS,.FALSE.,myThid)
187     c CALL EXCH_UV_XYZ_RS(recip_hFacW,recip_hFacS,.FALSE.,myThid)
188    
189     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
190     c#endif /* ndef DISABLE_SIGMA_CODE */
191     #endif /* NONLIN_FRSURF */
192    
193     RETURN
194     END

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