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

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Revision 1.1.2.8 - (show 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 C
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 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 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 C i,j,bi,bj - Loop counters
38
39 INTEGER i, j, bi, bj
40 INTEGER KOPEN
41 _RL U1, V1, SPEED_SQ
42 _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
43 _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
44
45 #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 C if this is not done before then do it here
53 _EXCH_XY_R8(UWIND, myThid)
54 _EXCH_XY_R8(VWIND, myThid)
55
56 c$taf loop = parallel
57 DO bj=myByLo(myThid),myByHi(myThid)
58 c$taf loop = parallel
59 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 FHEFF(I,J,bi,bj)=0.0 _d 0
66 #ifdef SEAICE_MULTILEVEL
67 FICEP(I,J)=0.0 _d 0
68 #endif
69 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 TMIX(I,J,bi,bj)=theta(I,J,1,bi,bj)+273.16 _d +00
77 #ifdef SEAICE_DEBUG
78 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
79 #endif
80 ENDDO
81 ENDDO
82
83 DO J=1,sNy
84 DO I=1,sNx
85 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 SPEED_SQ = U1**2 + V1**2
90 IF ( SPEED_SQ .LE. SEAICE_EPS_SQ ) THEN
91 UG(I,J)=SEAICE_EPS
92 ELSE
93 UG(I,J)=SQRT(SPEED_SQ)
94 ENDIF
95 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 #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 CALL BUDGET(UG, TICE, HICE, FICE, KOPEN, bi, bj)
128 #endif /* SEAICE_MULTILEVEL */
129
130 ENDDO
131 ENDDO
132
133 #endif /* ALLOW_SEAICE */
134
135 RETURN
136 END

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