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

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Revision 1.6 - (hide annotations) (download)
Wed Apr 30 07:04:08 2003 UTC (22 years, 2 months ago) by dimitri
Branch: MAIN
CVS Tags: checkpoint50e_post, checkpoint50c_post, checkpoint50c_pre, checkpoint50d_pre, checkpoint50d_post, checkpoint50f_post, checkpoint50f_pre, checkpoint50e_pre
Changes since 1.5: +17 -7 lines
checkpoint50c_pre
Merging from release1_p13:
o bug fix for pkg/seaice dynamic solver
o Added SEAICE_initialHEFF to pkg/seaice

1 heimbach 1.2 C $Header:
2    
3     #include "SEAICE_OPTIONS.h"
4    
5     CStartOfInterface
6     SUBROUTINE groatb( A22, myThid )
7     C /==========================================================\
8     C | SUBROUTINE groatb |
9     C | o Calculate ice growth |
10     C |==========================================================|
11     C \==========================================================/
12     IMPLICIT NONE
13    
14     C === Global variables ===
15     #include "SIZE.h"
16     #include "EEPARAMS.h"
17     #include "PARAMS.h"
18     #include "DYNVARS.h"
19     #include "FFIELDS.h"
20     #include "SEAICE.h"
21     #include "SEAICE_FFIELDS.h"
22 dimitri 1.6 COMMON /SEAICE_BOUND_RL/
23     & MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE,
24     & SEAICE_EPS, SEAICE_EPS_SQ
25     _RL SEAICE_EPS, SEAICE_EPS_SQ
26     _RL MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE
27    
28 heimbach 1.2 C === Routine arguments ===
29     C myThid - Thread no. that called this routine.
30     _RL A22
31     INTEGER myThid
32     CEndOfInterface
33    
34     #ifdef ALLOW_SEAICE
35    
36     C === Local variables ===
37 dimitri 1.4 C i,j,bi,bj - Loop counters
38 heimbach 1.2
39 dimitri 1.4 INTEGER i, j, bi, bj
40 heimbach 1.2 INTEGER KOPEN
41 dimitri 1.6 _RL U1, V1, SPEED_SQ
42 heimbach 1.2
43     _RL HICE (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
44     _RL UG (1-OLx:sNx+OLx, 1-OLy:sNy+OLy)
45    
46     C if this is not done before then do it here
47 dimitri 1.4 _EXCH_XY_R8(UWIND, myThid)
48     _EXCH_XY_R8(VWIND, myThid)
49 heimbach 1.2
50 dimitri 1.3 c$taf loop = parallel
51 heimbach 1.2 DO bj=myByLo(myThid),myByHi(myThid)
52 dimitri 1.3 c$taf loop = parallel
53 heimbach 1.2 DO bi=myBxLo(myThid),myBxHi(myThid)
54    
55     C DETERMINE AMOUNT OF OPEN WATER AND ICE THICKNESS
56     DO J=1,sNy
57     DO I=1,sNx
58     AREA(I,J,2,bi,bj)=MAX(A22,AREA(I,J,2,bi,bj))
59 dimitri 1.3 FHEFF(I,J,bi,bj)=0.0 _d 0
60 heimbach 1.2 HICE(I,J)=HEFF(I,J,2,bi,bj)/AREA(I,J,2,bi,bj)
61     ENDDO
62     ENDDO
63    
64     C NOW DETERMINE MIXED LAYER TEMPERATURE
65     DO J=1,sNy
66     DO I=1,sNx
67 dimitri 1.3 TMIX(I,J,bi,bj)=theta(I,J,1,bi,bj)+273.16 _d +00
68 heimbach 1.2 #ifdef SEAICE_DEBUG
69 dimitri 1.3 TMIX(I,J,bi,bj)=MAX(TMIX(I,J,bi,bj),271.2 _d +00)
70 dimitri 1.5 #endif
71 heimbach 1.2 ENDDO
72     ENDDO
73    
74     DO J=1,sNy
75     DO I=1,sNx
76 dimitri 1.6 U1=0.25 _d 0*(UWIND(I+1,J+1,bi,bj)+UWIND(I+1,J,bi,bj)
77     1 +UWIND(I,J+1,bi,bj)+UWIND(I,J,bi,bj))
78     V1=0.25 _d 0*(VWIND(I+1,J+1,bi,bj)+VWIND(I+1,J,bi,bj)
79     1 +VWIND(I,J+1,bi,bj)+VWIND(I,J,bi,bj))
80     SPEED_SQ = U1**2 + V1**2
81     IF ( SPEED_SQ .LT. SEAICE_EPS_SQ ) THEN
82     UG(I,J)=SEAICE_EPS
83     ELSE
84     UG(I,J)=SQRT(SPEED_SQ)
85     ENDIF
86 heimbach 1.2 ENDDO
87     ENDDO
88    
89     C NOW DETERMINE GROWTH RATES
90     C FIRST DO OPEN WATER
91     KOPEN=-1
92     CALL BUDGET(UG, TMIX, HICE, FO, KOPEN, bi, bj)
93     C NOW DO ICE
94     KOPEN=1
95     CALL BUDGET(UG, TICE, HICE, FICE, KOPEN, bi, bj)
96    
97     ENDDO
98     ENDDO
99    
100 dimitri 1.5 #endif /* ALLOW_SEAICE */
101 heimbach 1.2
102     RETURN
103     END

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