/[MITgcm]/MITgcm_contrib/lab_sea_test/advect.F
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Contents of /MITgcm_contrib/lab_sea_test/advect.F

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Revision 1.1 - (show annotations) (download)
Mon Jul 12 01:00:20 2004 UTC (19 years, 8 months ago) by dimitri
Branch: MAIN
CVS Tags: HEAD
added my_min_max for pkg/seaice routines

1 C $Header: /u/gcmpack/MITgcm/pkg/seaice/advect.F,v 1.10 2004/05/05 00:23:37 dimitri Exp $
2 C $Name: $
3
4 #include "SEAICE_OPTIONS.h"
5
6 CStartOfInterface
7 SUBROUTINE advect( UICE,VICE,HEFF,HEFFM,myThid )
8 C /==========================================================\
9 C | SUBROUTINE advect |
10 C | o Calculate ice advection |
11 C |==========================================================|
12 C \==========================================================/
13 IMPLICIT NONE
14
15 C === Global variables ===
16 #include "SIZE.h"
17 #include "EEPARAMS.h"
18 #include "PARAMS.h"
19 #include "SEAICE_PARAMS.h"
20 #include "SEAICE_GRID.h"
21
22 #ifdef ALLOW_AUTODIFF_TAMC
23 # include "tamc.h"
24 #endif
25
26 C === Routine arguments ===
27 C myThid - Thread no. that called this routine.
28 _RL UICE (1-OLx:sNx+OLx,1-OLy:sNy+OLy,3,nSx,nSy)
29 _RL VICE (1-OLx:sNx+OLx,1-OLy:sNy+OLy,3,nSx,nSy)
30 _RL HEFF (1-OLx:sNx+OLx,1-OLy:sNy+OLy,3,nSx,nSy)
31 _RL HEFFM (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy)
32 INTEGER myThid
33 CEndOfInterface
34
35 #ifdef ALLOW_SEAICE
36
37 C === Local variables ===
38 C i,j,k,bi,bj - Loop counters
39
40 INTEGER i, j, bi, bj
41 INTEGER K3
42 _RL DELTT
43
44 _RL UI (1-OLx:sNx+OLx, 1-OLy:sNy+OLy,nSx,nSy)
45 _RL VI (1-OLx:sNx+OLx, 1-OLy:sNy+OLy,nSx,nSy)
46 _RL DIFFA(1-OLx:sNx+OLx, 1-OLy:sNy+OLy,nSx,nSy)
47
48 _RL mymin_R8, mymax_R8
49 external mymin_R8, mymax_R8
50
51 C NOW DECIDE IF BACKWARD EULER OR LEAPFROG
52 IF(LAD.EQ.1) THEN
53 C LEAPFROG
54 DELTT=SEAICE_deltaTtherm*TWO
55 K3=3
56 ELSE
57 C BACKWARD EULER
58 DELTT=SEAICE_deltaTtherm
59 K3=2
60 ENDIF
61
62 C NOW REARRANGE H'S
63
64 DO bj=myByLo(myThid),myByHi(myThid)
65 DO bi=myBxLo(myThid),myBxHi(myThid)
66
67 DO j=1-OLy,sNy+OLy
68 DO i=1-OLx,sNx+OLx
69 UI(I,J,bi,bj)=UICE(I,J,1,bi,bj)
70 VI(I,J,bi,bj)=VICE(I,J,1,bi,bj)
71 ENDDO
72 ENDDO
73
74 DO j=1-OLy,sNy+OLy
75 DO i=1-OLx,sNx+OLx
76 HEFF(I,J,3,bi,bj)=HEFF(I,J,2,bi,bj)
77 HEFF(I,J,2,bi,bj)=HEFF(I,J,1,bi,bj)
78 ENDDO
79 ENDDO
80
81 ENDDO
82 ENDDO
83
84 #ifdef ALLOW_AUTODIFF_TAMC
85 CADJ STORE heff = comlev1, key = ikey_dynamics
86 #endif /* ALLOW_AUTODIFF_TAMC */
87
88 C NOW GO THROUGH STANDARD CONSERVATIVE ADVECTION
89 DO bj=myByLo(myThid),myByHi(myThid)
90 DO bi=myBxLo(myThid),myBxHi(myThid)
91 DO J=0,sNy-1
92 DO I=0,sNx-1
93 HEFF(I+1,J+1,1,bi,bj)=HEFF(I+1,J+1,K3,bi,bj)
94 & -DELTT*((HEFF(I+1,J+1,2,bi,bj)+HEFF
95 & (I+2,J+1,2,bi,bj))*(UI(I+2,J+2,bi,bj)+UI(I+2,J+1,bi,bj))-
96 & (HEFF(I+1,J+1,2,bi,bj)+HEFF
97 & (I,J+1,2,bi,bj))*(UI(I+1,J+2,bi,bj)+UI(I+1,J+1,bi,bj)))
98 & *(QUART/(DXTICE(I+1,J,bi,bj)*CSTICE(I,J+1,bi,bj)))
99 & -DELTT*((HEFF(I+1,J+1,2,bi,bj)
100 & +HEFF(I+1,J+2,2,bi,bj))*(VI(I+1,J+2,bi,bj)
101 & +VI(I+2,J+2,bi,bj))*CSUICE(I+1,J+2,bi,bj)
102 & -(HEFF(I+1,J+1,2,bi,bj)+HEFF(I+1,J,2,bi,bj))
103 & *(VI(I+1,J+1,bi,bj)+VI(I+2,J+1,bi,bj))*CSUICE(I+1,J+1,bi,bj))
104 & *(QUART/(DYTICE(I,J+1,bi,bj)*CSTICE(I,J+1,bi,bj)))
105 ENDDO
106 ENDDO
107 ENDDO
108 ENDDO
109
110 _BARRIER
111 CALL SEAICE_EXCH ( HEFF, myThid )
112 _BARRIER
113
114 IF (LAD .EQ. 2) THEN
115
116 C NOW DO BACKWARD EULER CORRECTION
117 DO bj=myByLo(myThid),myByHi(myThid)
118 DO bi=myBxLo(myThid),myBxHi(myThid)
119 DO j=1-OLy,sNy+OLy
120 DO i=1-OLx,sNx+OLx
121 HEFF(I,J,3,bi,bj)=HEFF(I,J,2,bi,bj)
122 HEFF(I,J,2,bi,bj)=HALF*(HEFF(I,J,1,bi,bj)
123 & +HEFF(I,J,2,bi,bj))
124 ENDDO
125 ENDDO
126 ENDDO
127 ENDDO
128
129 C NOW GO THROUGH STANDARD CONSERVATIVE ADVECTION
130 DO bj=myByLo(myThid),myByHi(myThid)
131 DO bi=myBxLo(myThid),myBxHi(myThid)
132 DO J=0,sNy-1
133 DO I=0,sNx-1
134 HEFF(I+1,J+1,1,bi,bj)=HEFF(I+1,J+1,3,bi,bj)
135 & -DELTT*((HEFF(I+1,J+1,2,bi,bj)+HEFF
136 & (I+2,J+1,2,bi,bj))*(UI(I+2,J+2,bi,bj)+UI(I+2,J+1,bi,bj))-
137 & (HEFF(I+1,J+1,2,bi,bj)+HEFF
138 & (I,J+1,2,bi,bj))*(UI(I+1,J+2,bi,bj)+UI(I+1,J+1,bi,bj)))
139 & *(QUART/(DXTICE(I+1,J,bi,bj)*CSTICE(I,J+1,bi,bj)))
140 & -DELTT*((HEFF(I+1,J+1,2,bi,bj)
141 & +HEFF(I+1,J+2,2,bi,bj))*(VI(I+1,J+2,bi,bj)
142 & +VI(I+2,J+2,bi,bj))*CSUICE(I+1,J+2,bi,bj)
143 & -(HEFF(I+1,J+1,2,bi,bj)+HEFF(I+1,J,2,bi,bj))
144 & *(VI(I+1,J+1,bi,bj)+VI(I+2,J+1,bi,bj))
145 & *CSUICE(I+1,J+1,bi,bj))
146 & *(QUART/(DYTICE(I,J+1,bi,bj)*CSTICE(I,J+1,bi,bj)))
147 ENDDO
148 ENDDO
149 ENDDO
150 ENDDO
151
152 _BARRIER
153 CALL SEAICE_EXCH( HEFF, myThid )
154 _BARRIER
155
156 C NOW FIX UP H(I,J,2)
157 DO bj=myByLo(myThid),myByHi(myThid)
158 DO bi=myBxLo(myThid),myBxHi(myThid)
159 DO j=1-OLy,sNy+OLy
160 DO i=1-OLx,sNx+OLx
161 HEFF(I,J,2,bi,bj)=HEFF(I,J,3,bi,bj)
162 ENDDO
163 ENDDO
164 ENDDO
165 ENDDO
166
167 ENDIF
168
169 C NOW DO DIFFUSION ON H(I,J,3)
170 C NOW CALCULATE DIFFUSION COEF ROUGHLY
171 DO bj=myByLo(myThid),myByHi(myThid)
172 DO bi=myBxLo(myThid),myBxHi(myThid)
173 DO j=1-OLy,sNy+OLy
174 DO i=1-OLx,sNx+OLx
175 DIFFA(I,J,bi,bj)=DIFF1*MYMIN_R8(DXTICE(I,J,bi,bj)
176 & *CSTICE(I,J,bi,bj),DYTICE(I,J,bi,bj))
177 ENDDO
178 ENDDO
179 ENDDO
180 ENDDO
181 CALL DIFFUS(HEFF,DIFFA,HEFFM,DELTT, myThid)
182
183 DO bj=myByLo(myThid),myByHi(myThid)
184 DO bi=myBxLo(myThid),myBxHi(myThid)
185 DO j=1-OLy,sNy+OLy
186 DO i=1-OLx,sNx+OLx
187 HEFF(I,J,1,bi,bj)=(HEFF(I,J,1,bi,bj)+HEFF(I,J,3,bi,bj))
188 & *HEFFM(I,J,bi,bj)
189 ENDDO
190 ENDDO
191 ENDDO
192 ENDDO
193
194 C NOW CALCULATE DIFFUSION COEF ROUGHLY
195 DO bj=myByLo(myThid),myByHi(myThid)
196 DO bi=myBxLo(myThid),myBxHi(myThid)
197 DO j=1-OLy,sNy+OLy
198 DO i=1-OLx,sNx+OLx
199 DIFFA(I,J,bi,bj)=-(MYMIN_R8(DXTICE(I,J,bi,bj)*CSTICE(I,J,bi,bj)
200 & ,DYTICE(I,J,bi,bj)))**2/DELTT
201 ENDDO
202 ENDDO
203 ENDDO
204 ENDDO
205 CALL DIFFUS(HEFF,DIFFA,HEFFM,DELTT, myThid)
206
207 DO bj=myByLo(myThid),myByHi(myThid)
208 DO bi=myBxLo(myThid),myBxHi(myThid)
209 DO j=1-OLy,sNy+OLy
210 DO i=1-OLx,sNx+OLx
211 HEFF(I,J,1,bi,bj)=(HEFF(I,J,1,bi,bj)+HEFF(I,J,3,bi,bj))
212 & *HEFFM(I,J,bi,bj)
213 ENDDO
214 ENDDO
215 ENDDO
216 ENDDO
217
218 #endif /* ALLOW_SEAICE */
219
220 RETURN
221 END

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