/[MITgcm]/MITgcm/pkg/seaice/groatb.F
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Annotation of /MITgcm/pkg/seaice/groatb.F

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Revision 1.1.2.8 - (hide annotations) (download)
Fri May 23 17:51:22 2003 UTC (22 years, 1 month ago) by dimitri
Branch: release1
Changes since 1.1.2.7: +1 -1 lines
o adjoint-friendly modifications to pkg/seaice

1 heimbach 1.1.2.1 C $Header:
2    
3     #include "SEAICE_OPTIONS.h"
4    
5     CStartOfInterface
6     SUBROUTINE groatb( A22, myThid )
7     C /==========================================================\
8     C | SUBROUTINE groatb |
9     C | o Calculate ice growth |
10     C |==========================================================|
11     C \==========================================================/
12     IMPLICIT NONE
13    
14     C === Global variables ===
15     #include "SIZE.h"
16     #include "EEPARAMS.h"
17     #include "PARAMS.h"
18     #include "DYNVARS.h"
19     #include "FFIELDS.h"
20     #include "SEAICE.h"
21     #include "SEAICE_FFIELDS.h"
22 dimitri 1.1.2.5 COMMON /SEAICE_BOUND_RL/
23     & MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE,
24     & SEAICE_EPS, SEAICE_EPS_SQ
25     _RL SEAICE_EPS, SEAICE_EPS_SQ
26     _RL MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE
27    
28 heimbach 1.1.2.1 C === Routine arguments ===
29     C myThid - Thread no. that called this routine.
30     _RL A22
31     INTEGER myThid
32     CEndOfInterface
33    
34     #ifdef ALLOW_SEAICE
35    
36     C === Local variables ===
37 dimitri 1.1.2.3 C i,j,bi,bj - Loop counters
38 heimbach 1.1.2.1
39 dimitri 1.1.2.3 INTEGER i, j, bi, bj
40 heimbach 1.1.2.1 INTEGER KOPEN
41 dimitri 1.1.2.5 _RL U1, V1, SPEED_SQ
42 heimbach 1.1.2.1 _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
43     _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
44    
45 dimitri 1.1.2.7 #ifdef SEAICE_MULTILEVEL
46     INTEGER it
47     _RL RK
48     _RL HICEP(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
49     _RL FICEP(1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
50     #endif
51    
52 heimbach 1.1.2.1 C if this is not done before then do it here
53 dimitri 1.1.2.3 _EXCH_XY_R8(UWIND, myThid)
54     _EXCH_XY_R8(VWIND, myThid)
55 heimbach 1.1.2.1
56 dimitri 1.1.2.2 c$taf loop = parallel
57 heimbach 1.1.2.1 DO bj=myByLo(myThid),myByHi(myThid)
58 dimitri 1.1.2.2 c$taf loop = parallel
59 heimbach 1.1.2.1 DO bi=myBxLo(myThid),myBxHi(myThid)
60    
61     C DETERMINE AMOUNT OF OPEN WATER AND ICE THICKNESS
62     DO J=1,sNy
63     DO I=1,sNx
64     AREA(I,J,2,bi,bj)=MAX(A22,AREA(I,J,2,bi,bj))
65 dimitri 1.1.2.2 FHEFF(I,J,bi,bj)=0.0 _d 0
66 dimitri 1.1.2.7 #ifdef SEAICE_MULTILEVEL
67     FICEP(I,J)=0.0 _d 0
68     #endif
69 heimbach 1.1.2.1 HICE(I,J)=HEFF(I,J,2,bi,bj)/AREA(I,J,2,bi,bj)
70     ENDDO
71     ENDDO
72    
73     C NOW DETERMINE MIXED LAYER TEMPERATURE
74     DO J=1,sNy
75     DO I=1,sNx
76 dimitri 1.1.2.2 TMIX(I,J,bi,bj)=theta(I,J,1,bi,bj)+273.16 _d +00
77 heimbach 1.1.2.1 #ifdef SEAICE_DEBUG
78 dimitri 1.1.2.2 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
79 dimitri 1.1.2.4 #endif
80 heimbach 1.1.2.1 ENDDO
81     ENDDO
82    
83     DO J=1,sNy
84     DO I=1,sNx
85 dimitri 1.1.2.6 U1=0.25 _d 0*(UWIND(I+1,J+1,bi,bj)+UWIND(I+1,J,bi,bj)
86     1 +UWIND(I,J+1,bi,bj)+UWIND(I,J,bi,bj))
87     V1=0.25 _d 0*(VWIND(I+1,J+1,bi,bj)+VWIND(I+1,J,bi,bj)
88     1 +VWIND(I,J+1,bi,bj)+VWIND(I,J,bi,bj))
89 dimitri 1.1.2.5 SPEED_SQ = U1**2 + V1**2
90 dimitri 1.1.2.8 IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN
91 dimitri 1.1.2.5 UG(I,J)=SEAICE_EPS
92     ELSE
93     UG(I,J)=SQRT(SPEED_SQ)
94     ENDIF
95 heimbach 1.1.2.1 ENDDO
96     ENDDO
97    
98     C NOW DETERMINE GROWTH RATES
99     C FIRST DO OPEN WATER
100     KOPEN=-1
101     CALL BUDGET(UG, TMIX, HICE, FO, KOPEN, bi, bj)
102     C NOW DO ICE
103     KOPEN=1
104 dimitri 1.1.2.7 #ifdef SEAICE_MULTILEVEL
105     DO IT=1,7
106     DO J=1,sNy
107     DO I=1,sNx
108     RK=IT*1.0
109     HICEP(I,J)=(HICE(I,J)/7.0 _d 0)*((2.0 _d 0*RK)-1.0 _d 0)
110     TICE(I,J,bi,bj)=TICES(I,J,IT,bi,bj)
111     ENDDO
112     ENDDO
113     CALL BUDGET(UG, TICE, HICEP, FICE, KOPEN, bi, bj)
114     DO J=1,sNy
115     DO I=1,sNx
116     FICEP(I,J)=(FICE(I,J,bi,bj)/7.0 _d 0)+FICEP(I,J)
117     TICES(I,J,IT,bi,bj)=TICE(I,J,bi,bj)
118     ENDDO
119     ENDDO
120     ENDDO
121     DO J=1,sNy
122     DO I=1,sNx
123     FICE(I,J,bi,bj)=FICEP(I,J)
124     ENDDO
125     ENDDO
126     #else /* SEAICE_MULTILEVEL */
127 heimbach 1.1.2.1 CALL BUDGET(UG, TICE, HICE, FICE, KOPEN, bi, bj)
128 dimitri 1.1.2.7 #endif /* SEAICE_MULTILEVEL */
129 heimbach 1.1.2.1
130     ENDDO
131     ENDDO
132    
133 dimitri 1.1.2.4 #endif /* ALLOW_SEAICE */
134 heimbach 1.1.2.1
135     RETURN
136     END

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