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

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Revision 1.4.4.3 - (show annotations) (download)
Fri Feb 28 09:34:06 2003 UTC (22 years, 4 months ago) by dimitri
Branch: ecco-branch
Changes since 1.4.4.2: +7 -2 lines
o Reduced derivative singularities in pkg/seaice.

1 C $Header:
2
3 #include "SEAICE_OPTIONS.h"
4
5 CStartOfInterface
6 SUBROUTINE groatb( A22, myThid )
7 C /==========================================================\
8 C | SUBROUTINE groatb |
9 C | o Calculate ice growth |
10 C |==========================================================|
11 C \==========================================================/
12 IMPLICIT NONE
13
14 C === Global variables ===
15 #include "SIZE.h"
16 #include "EEPARAMS.h"
17 #include "PARAMS.h"
18 #include "DYNVARS.h"
19 #include "FFIELDS.h"
20 #include "SEAICE.h"
21 #include "SEAICE_FFIELDS.h"
22
23 C === Routine arguments ===
24 C myThid - Thread no. that called this routine.
25 _RL A22
26 INTEGER myThid
27 CEndOfInterface
28
29 #ifdef ALLOW_SEAICE
30
31 C === Local variables ===
32 C i,j,bi,bj - Loop counters
33
34 INTEGER i, j, bi, bj
35 INTEGER KOPEN
36 _RL U1, V1, SPEED_SQ
37
38 _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
39 _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
40
41 C if this is not done before then do it here
42 _EXCH_XY_R8(UWIND, myThid)
43 _EXCH_XY_R8(VWIND, myThid)
44
45 c$taf loop = parallel
46 DO bj=myByLo(myThid),myByHi(myThid)
47 c$taf loop = parallel
48 DO bi=myBxLo(myThid),myBxHi(myThid)
49
50 C DETERMINE AMOUNT OF OPEN WATER AND ICE THICKNESS
51 DO J=1,sNy
52 DO I=1,sNx
53 AREA(I,J,2,bi,bj)=MAX(A22,AREA(I,J,2,bi,bj))
54 FHEFF(I,J,bi,bj)=0.0 _d 0
55 HICE(I,J)=HEFF(I,J,2,bi,bj)/AREA(I,J,2,bi,bj)
56 ENDDO
57 ENDDO
58
59 C NOW DETERMINE MIXED LAYER TEMPERATURE
60 DO J=1,sNy
61 DO I=1,sNx
62 TMIX(I,J,bi,bj)=theta(I,J,1,bi,bj)+273.16 _d +00
63 #ifdef SEAICE_DEBUG
64 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
65 #endif
66 ENDDO
67 ENDDO
68
69 DO J=1,sNy
70 DO I=1,sNx
71 U1=0.25 _d 0*(UWIND(I-1,J-1,bi,bj)+UWIND(I-1,J,bi,bj)
72 1 +UWIND(I,J-1,bi,bj)+UWIND(I,J,bi,bj))
73 V1=0.25 _d 0*(VWIND(I-1,J-1,bi,bj)+VWIND(I-1,J,bi,bj)
74 1 +VWIND(I,J-1,bi,bj)+VWIND(I,J,bi,bj))
75 SPEED_SQ = U1**2 + V1**2
76 IF ( SPEED_SQ .LT. SEAICE_EPS_SQ ) THEN
77 UG(I,J)=SEAICE_EPS
78 ELSE
79 UG(I,J)=SQRT(SPEED_SQ)
80 ENDIF
81 ENDDO
82 ENDDO
83
84 C NOW DETERMINE GROWTH RATES
85 C FIRST DO OPEN WATER
86 KOPEN=-1
87 CALL BUDGET(UG, TMIX, HICE, FO, KOPEN, bi, bj)
88 C NOW DO ICE
89 KOPEN=1
90 CALL BUDGET(UG, TICE, HICE, FICE, KOPEN, bi, bj)
91
92 ENDDO
93 ENDDO
94
95 #endif /* ALLOW_SEAICE */
96
97 RETURN
98 END

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