/[MITgcm]/MITgcm/model/src/ini_theta.F
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Contents of /MITgcm/model/src/ini_theta.F

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Revision 1.1 - (show annotations) (download)
Wed Apr 22 19:15:30 1998 UTC (26 years, 2 months ago) by cnh
Branch: MAIN
Branch point for: cnh
Initial revision

1 C $Id$
2
3 #include "CPP_EEOPTIONS.h"
4
5 CStartOfInterface
6 SUBROUTINE INI_THETA( myThid )
7 C /==========================================================\
8 C | SUBROUTINE INI_THETA |
9 C | o Set model initial temperature field. |
10 C |==========================================================|
11 C | There are several options for setting the initial |
12 C | temperature file |
13 C | 1. Inline code |
14 C | 2. Vertical profile ( uniform T in X and Y ) |
15 C | 3. Three-dimensional data from a file. For example from |
16 C | Levitus or from a checkpoint file from a previous |
17 C | integration. |
18 C | In addition to setting the temperature field we also |
19 C | set the initial temperature tendency term here. |
20 C \==========================================================/
21
22 C === Global variables ===
23 #include "SIZE.h"
24 #include "EEPARAMS.h"
25 #include "PARAMS.h"
26 #include "GRID.h"
27 #include "DYNVARS.h"
28
29 C == Routine arguments ==
30 C myThid - Number of this instance of INI_THETA
31 INTEGER myThid
32 CEndOfInterface
33
34 C == Local variables ==
35 C iC, jC - Center of domain
36 C iD, jD - Disitance from domain center.
37 C rad - Radius of initial patch
38 C rD - Radial displacement of point I,J
39 C iG, jG - Global coordinate index
40 C bi,bj - Loop counters
41 C I,J,K
42 INTEGER iC, jC, iD, jD
43 INTEGER iG, jG
44 INTEGER bi, bj
45 INTEGER I, J, K
46 REAL rad, rD
47
48 C-- Initialise temperature field to a circular patch.
49 iC = Nx/2
50 jC = Ny/2
51 rad = MIN(Ny/8,Nx/8)
52 DO bj = myByLo(myThid), myByHi(myThid)
53 DO bi = myBxLo(myThid), myBxHi(myThid)
54 DO K=1,Nz
55 DO J=1,sNy
56 DO I=1,sNx
57 theta(I,J,K,bi,bj) = 0. _d 0
58 iG = myXGlobalLo-1+(bi-1)*sNx+I
59 jG = myYGlobalLo-1+(bj-1)*sNy+J
60 iD = iG-iC
61 jD = jG-jC
62 rD = SQRT(FLOAT(iD*iD+jD*jD))
63 IF ( rD .LT. rad ) theta(I,J,K,bi,bj) = 1. _d 0
64 ENDDO
65 ENDDO
66 ENDDO
67 ENDDO
68 ENDDO
69 C-- Initialise temperature field to the vertical reference profile
70 DO bj = myByLo(myThid), myByHi(myThid)
71 DO bi = myBxLo(myThid), myBxHi(myThid)
72 DO K=1,Nz
73 DO J=1,sNy
74 DO I=1,sNx
75 theta(I,J,K,bi,bj) = tRef(K)
76 ENDDO
77 ENDDO
78 ENDDO
79 ENDDO
80 ENDDO
81 C Set initial tendency terms
82 DO bj = myByLo(myThid), myByHi(myThid)
83 DO bi = myBxLo(myThid), myBxHi(myThid)
84 DO K=1,Nz
85 DO J=1,sNy
86 DO I=1,sNx
87 gt (I,J,K,bi,bj) = 0. _d 0
88 gtNM1(I,J,K,bi,bj) = 0. _d 0
89 ENDDO
90 ENDDO
91 ENDDO
92 ENDDO
93 ENDDO
94 C
95 _EXCH_XYZ_R8(theta , myThid )
96 _EXCH_XYZ_R8(gt , myThid )
97 _EXCH_XYZ_R8(gtNM1 , myThid )
98 RETURN
99 END

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