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

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Revision 1.4.4.3 - (hide 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 heimbach 1.2 C $Header:
2    
3     #include "SEAICE_OPTIONS.h"
4    
5     CStartOfInterface
6     SUBROUTINE groatb( A22, myThid )
7     C /==========================================================\
8     C | SUBROUTINE groatb |
9     C | o Calculate ice growth |
10     C |==========================================================|
11     C \==========================================================/
12     IMPLICIT NONE
13    
14     C === Global variables ===
15     #include "SIZE.h"
16     #include "EEPARAMS.h"
17     #include "PARAMS.h"
18     #include "DYNVARS.h"
19     #include "FFIELDS.h"
20     #include "SEAICE.h"
21     #include "SEAICE_FFIELDS.h"
22    
23     C === Routine arguments ===
24     C myThid - Thread no. that called this routine.
25     _RL A22
26     INTEGER myThid
27     CEndOfInterface
28    
29     #ifdef ALLOW_SEAICE
30    
31     C === Local variables ===
32 dimitri 1.4 C i,j,bi,bj - Loop counters
33 heimbach 1.2
34 dimitri 1.4 INTEGER i, j, bi, bj
35 heimbach 1.2 INTEGER KOPEN
36 dimitri 1.4.4.3 _RL U1, V1, SPEED_SQ
37 heimbach 1.2
38     _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
39     _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
40    
41     C if this is not done before then do it here
42 dimitri 1.4 _EXCH_XY_R8(UWIND, myThid)
43     _EXCH_XY_R8(VWIND, myThid)
44 heimbach 1.2
45 dimitri 1.3 c$taf loop = parallel
46 heimbach 1.2 DO bj=myByLo(myThid),myByHi(myThid)
47 dimitri 1.3 c$taf loop = parallel
48 heimbach 1.2 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 dimitri 1.3 FHEFF(I,J,bi,bj)=0.0 _d 0
55 heimbach 1.2 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 dimitri 1.3 TMIX(I,J,bi,bj)=theta(I,J,1,bi,bj)+273.16 _d +00
63 heimbach 1.2 #ifdef SEAICE_DEBUG
64 dimitri 1.3 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
65 dimitri 1.4.4.2 #endif
66 heimbach 1.2 ENDDO
67     ENDDO
68    
69     DO J=1,sNy
70     DO I=1,sNx
71 dimitri 1.4 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 dimitri 1.4.4.3 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 heimbach 1.2 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 dimitri 1.4.4.2 #endif /* ALLOW_SEAICE */
96 heimbach 1.2
97     RETURN
98     END

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