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

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Revision 1.4.4.4 - (hide annotations) (download)
Fri Feb 28 09:47:31 2003 UTC (22 years, 4 months ago) by dimitri
Branch: ecco-branch
Changes since 1.4.4.3: +1 -0 lines
o Reduced derivative singularities in pkg/seaice.

1 heimbach 1.2 C $Header:
2    
3     #include "SEAICE_OPTIONS.h"
4    
5     CStartOfInterface
6     SUBROUTINE groatb( A22, myThid )
7     C /==========================================================\
8     C | SUBROUTINE groatb |
9     C | o Calculate ice growth |
10     C |==========================================================|
11     C \==========================================================/
12     IMPLICIT NONE
13    
14     C === Global variables ===
15     #include "SIZE.h"
16     #include "EEPARAMS.h"
17     #include "PARAMS.h"
18     #include "DYNVARS.h"
19     #include "FFIELDS.h"
20     #include "SEAICE.h"
21 dimitri 1.4.4.4 #include "SEAICE_PARAMS.h"
22 heimbach 1.2 #include "SEAICE_FFIELDS.h"
23    
24     C === Routine arguments ===
25     C myThid - Thread no. that called this routine.
26     _RL A22
27     INTEGER myThid
28     CEndOfInterface
29    
30     #ifdef ALLOW_SEAICE
31    
32     C === Local variables ===
33 dimitri 1.4 C i,j,bi,bj - Loop counters
34 heimbach 1.2
35 dimitri 1.4 INTEGER i, j, bi, bj
36 heimbach 1.2 INTEGER KOPEN
37 dimitri 1.4.4.3 _RL U1, V1, SPEED_SQ
38 heimbach 1.2
39     _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
40     _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
41    
42     C if this is not done before then do it here
43 dimitri 1.4 _EXCH_XY_R8(UWIND, myThid)
44     _EXCH_XY_R8(VWIND, myThid)
45 heimbach 1.2
46 dimitri 1.3 c$taf loop = parallel
47 heimbach 1.2 DO bj=myByLo(myThid),myByHi(myThid)
48 dimitri 1.3 c$taf loop = parallel
49 heimbach 1.2 DO bi=myBxLo(myThid),myBxHi(myThid)
50    
51     C DETERMINE AMOUNT OF OPEN WATER AND ICE THICKNESS
52     DO J=1,sNy
53     DO I=1,sNx
54     AREA(I,J,2,bi,bj)=MAX(A22,AREA(I,J,2,bi,bj))
55 dimitri 1.3 FHEFF(I,J,bi,bj)=0.0 _d 0
56 heimbach 1.2 HICE(I,J)=HEFF(I,J,2,bi,bj)/AREA(I,J,2,bi,bj)
57     ENDDO
58     ENDDO
59    
60     C NOW DETERMINE MIXED LAYER TEMPERATURE
61     DO J=1,sNy
62     DO I=1,sNx
63 dimitri 1.3 TMIX(I,J,bi,bj)=theta(I,J,1,bi,bj)+273.16 _d +00
64 heimbach 1.2 #ifdef SEAICE_DEBUG
65 dimitri 1.3 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
66 dimitri 1.4.4.2 #endif
67 heimbach 1.2 ENDDO
68     ENDDO
69    
70     DO J=1,sNy
71     DO I=1,sNx
72 dimitri 1.4 U1=0.25 _d 0*(UWIND(I-1,J-1,bi,bj)+UWIND(I-1,J,bi,bj)
73     1 +UWIND(I,J-1,bi,bj)+UWIND(I,J,bi,bj))
74     V1=0.25 _d 0*(VWIND(I-1,J-1,bi,bj)+VWIND(I-1,J,bi,bj)
75     1 +VWIND(I,J-1,bi,bj)+VWIND(I,J,bi,bj))
76 dimitri 1.4.4.3 SPEED_SQ = U1**2 + V1**2
77     IF ( SPEED_SQ .LT. SEAICE_EPS_SQ ) THEN
78     UG(I,J)=SEAICE_EPS
79     ELSE
80     UG(I,J)=SQRT(SPEED_SQ)
81     ENDIF
82 heimbach 1.2 ENDDO
83     ENDDO
84    
85     C NOW DETERMINE GROWTH RATES
86     C FIRST DO OPEN WATER
87     KOPEN=-1
88     CALL BUDGET(UG, TMIX, HICE, FO, KOPEN, bi, bj)
89     C NOW DO ICE
90     KOPEN=1
91     CALL BUDGET(UG, TICE, HICE, FICE, KOPEN, bi, bj)
92    
93     ENDDO
94     ENDDO
95    
96 dimitri 1.4.4.2 #endif /* ALLOW_SEAICE */
97 heimbach 1.2
98     RETURN
99     END

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