/[MITgcm]/MITgcm_contrib/submesoscale/code/ini_grid.F
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Revision 1.2 - (hide annotations) (download)
Sat May 31 00:47:06 2008 UTC (17 years, 1 month ago) by dimitri
Branch: MAIN
Changes since 1.1: +8 -1 lines
When obcs is enabled, set dxC and dyC to constant values in the OBCS overlap
region, equal to the value at the open boundary, in order to avoid
discontinuities.

1 dimitri 1.2 C $Header: /u/gcmpack/MITgcm_contrib/submesoscale/code/ini_grid.F,v 1.1 2008/05/31 00:13:54 dimitri Exp $
2 dimitri 1.1 C $Name: $
3    
4     #include "PACKAGES_CONFIG.h"
5     #include "CPP_OPTIONS.h"
6    
7     CBOP
8     C !ROUTINE: INI_GRID
9    
10     C !INTERFACE:
11     SUBROUTINE INI_GRID( myThid )
12     C !DESCRIPTION:
13     C These arrays are used throughout the code in evaluating gradients,
14     C integrals and spatial avarages. This routine is called separately
15     C by each thread and initializes only the region of the domain it is
16     C "responsible" for.
17    
18     C !USES:
19     IMPLICIT NONE
20     #include "SIZE.h"
21     #include "EEPARAMS.h"
22     #include "PARAMS.h"
23     #include "GRID.h"
24     #ifdef ALLOW_MNC
25     #include "MNC_PARAMS.h"
26     #endif
27     #ifdef ALLOW_MONITOR
28     #include "MONITOR.h"
29     #endif
30    
31     C !INPUT/OUTPUT PARAMETERS:
32     C myThid :: my Thread Id number
33     INTEGER myThid
34     CEOP
35    
36     C === Functions ====
37     LOGICAL MASTER_CPU_IO
38     EXTERNAL MASTER_CPU_IO
39    
40     C !LOCAL VARIABLES:
41     C msgBuf :: Informational/error message buffer
42     CHARACTER*(MAX_LEN_MBUF) msgBuf
43     #ifdef ALLOW_MNC
44     INTEGER i
45     #endif
46    
47     C load grid spacing (vector) from files
48     CALL LOAD_GRID_SPACING( myThid )
49    
50     C Set up reference vertical profile (vector) for state variables
51     C jmc: this call will not stay here but will move to S/R INITIALISE_FIXED
52     C (a better place) once anelatic initialisation is cleaned-up.
53     CALL INI_REFERENCE_STATE( myThid )
54    
55     C Set up vertical grid and coordinate system
56     CALL INI_VERTICAL_GRID( myThid )
57    
58     C Two examples are shown in this code. One illustrates the
59     C initialization of a cartesian grid. The other shows the
60     C inialization of a spherical polar grid. Other orthonormal grids
61     C can be fitted into this design. In this case custom metric terms
62     C also need adding to account for the projections of velocity
63     C vectors onto these grids. The structure used here also makes it
64     C possible to implement less regular grid mappings. In particular:
65     C o Schemes which leave out blocks of the domain that are
66     C all land could be supported.
67     C o Multi-level schemes such as icosohedral or cubic
68     C grid projectedions onto a sphere can also be fitted
69     C within the strategy we use.
70     C Both of the above also require modifying the support
71     C routines that map computational blocks to simulation
72     C domain blocks.
73    
74     C Set up horizontal grid and coordinate system
75     IF ( usingCartesianGrid ) THEN
76     CALL INI_CARTESIAN_GRID( myThid )
77     ELSEIF ( usingSphericalPolarGrid ) THEN
78     CALL INI_SPHERICAL_POLAR_GRID( myThid )
79     ELSEIF ( usingCurvilinearGrid ) THEN
80     CALL INI_CURVILINEAR_GRID( myThid )
81     ELSEIF ( usingCylindricalGrid ) THEN
82     CALL INI_CYLINDER_GRID( myThid )
83     ELSE
84     _BEGIN_MASTER(myThid)
85     WRITE(msgBuf,'(2A)') 'S/R INI_GRID: ',
86     & 'No grid coordinate system has been selected'
87     CALL PRINT_ERROR( msgBuf , myThid)
88     STOP 'ABNORMAL END: S/R INI_GRID'
89     _END_MASTER(myThid)
90     ENDIF
91    
92 dimitri 1.2 #ifdef ALLOW_OBCS
93     IF ( useOBCS ) THEN
94     C Fix overlap regions to avoid discontinuities in dxc, dyc, etc.
95     CALL OBCS_CHECK_GRID( myThid )
96     ENDIF
97     #endif /* ALLOW_OBCS */
98    
99 dimitri 1.1 #ifdef ALLOW_MONITOR
100     IF ( MASTER_CPU_IO(myThid) ) THEN
101     C-- only the master thread is allowed to switch On/Off mon_write_stdout
102     C & mon_write_mnc (since it's the only thread that uses those flags):
103    
104     IF (monitor_stdio) THEN
105     mon_write_stdout = .TRUE.
106     ELSE
107     mon_write_stdout = .FALSE.
108     ENDIF
109     mon_write_mnc = .FALSE.
110     #ifdef ALLOW_MNC
111     IF (useMNC .AND. monitor_mnc) THEN
112     DO i = 1,MAX_LEN_MBUF
113     mon_fname(i:i) = ' '
114     ENDDO
115     mon_fname(1:12) = 'monitor_grid'
116     CALL MNC_CW_SET_UDIM(mon_fname, 1, myThid)
117     mon_write_mnc = .TRUE.
118     ENDIF
119     #endif /* ALLOW_MNC */
120    
121     ENDIF
122    
123     C Print out statistics of each horizontal grid array (helps when
124     C debugging)
125     CALL MON_PRINTSTATS_RS(1,xC,'XC',myThid)
126     CALL MON_PRINTSTATS_RS(1,xG,'XG',myThid)
127     CALL MON_PRINTSTATS_RS(1,dxC,'DXC',myThid)
128     CALL MON_PRINTSTATS_RS(1,dxF,'DXF',myThid)
129     CALL MON_PRINTSTATS_RS(1,dxG,'DXG',myThid)
130     CALL MON_PRINTSTATS_RS(1,dxV,'DXV',myThid)
131     CALL MON_PRINTSTATS_RS(1,yC,'YC',myThid)
132     CALL MON_PRINTSTATS_RS(1,yG,'YG',myThid)
133     CALL MON_PRINTSTATS_RS(1,dyC,'DYC',myThid)
134     CALL MON_PRINTSTATS_RS(1,dyF,'DYF',myThid)
135     CALL MON_PRINTSTATS_RS(1,dyG,'DYG',myThid)
136     CALL MON_PRINTSTATS_RS(1,dyU,'DYU',myThid)
137     CALL MON_PRINTSTATS_RS(1,rA,'RA',myThid)
138     CALL MON_PRINTSTATS_RS(1,rAw,'RAW',myThid)
139     CALL MON_PRINTSTATS_RS(1,rAs,'RAS',myThid)
140     CALL MON_PRINTSTATS_RS(1,rAz,'RAZ',myThid)
141     CALL MON_PRINTSTATS_RS(1,angleCosC,'AngleCS',myThid)
142     CALL MON_PRINTSTATS_RS(1,angleSinC,'AngleSN',myThid)
143    
144     IF ( MASTER_CPU_IO(myThid) ) THEN
145     mon_write_stdout = .FALSE.
146     mon_write_mnc = .FALSE.
147     ENDIF
148     #endif /* ALLOW_MONITOR */
149    
150     C-- Everyone else must wait for the grid to be set
151     _BARRIER
152    
153     RETURN
154     END

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