/[MITgcm]/MITgcm/model/src/ini_grid.F
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revision 1.8 by adcroft, Tue May 29 14:01:37 2001 UTC revision 1.33 by jmc, Tue Mar 16 00:08:27 2010 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2  C $Name$  C $Name$
3    
4    #include "PACKAGES_CONFIG.h"
5  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
6    
7  CStartOfInterface  CBOP
8    C     !ROUTINE: INI_GRID
9    
10    C     !INTERFACE:
11        SUBROUTINE INI_GRID( myThid )        SUBROUTINE INI_GRID( myThid )
12  C     /==========================================================\  C     !DESCRIPTION:
13  C     | SUBROUTINE INI_GRID                                      |  C     These arrays are used throughout the code in evaluating gradients,
14  C     | o Initialise model grid                                  |  C     integrals and spatial avarages. This routine is called separately
15  C     |==========================================================|  C     by each thread and initializes only the region of the domain it is
16  C     | These arrays are used throughout the code in evaluating  |  C     "responsible" for.
17  C     | gradients, integrals and spatial avarages. This routine  |  
18  C     | is called separately by each thread and initialise only  |  C     !CALLING SEQUENCE:
19  C     | the region of the domain it is "responsible" for.        |  C     INI_GRID
20  C     | Notes:                                                   |  C      |   -- LOAD_GRID_SPACING
21  C     | Two examples are shown in this code. One illustrates the |  C      |   -- INI_VERTICAL_GRID
22  C     | initialisation of a cartesian grid. The other shows the  |  C      |    / INI_CARTESIAN_GRID
23  C     | inialisation of a spherical polar grid. Other orthonormal|  C      |   /  INI_SPHERICAL_POLAR_GRID
24  C     | grids can be fitted into this design. In this case       |  C      |   \  INI_CURVILINEAR_GRID
25  C     | custom metric terms also need adding to account for the  |  C      |    \ INI_CYLINDER_GRID
 C     | projections of velocity vectors onto these grids.        |  
 C     | The structure used here also makes it possible to        |  
 C     | implement less regular grid mappings. In particular      |  
 C     | o Schemes which leave out blocks of the domain that are  |  
 C     |   all land could be supported.                           |  
 C     | o Multi-level schemes such as icosohedral or cubic       |  
 C     |   grid projectedions onto a sphere can also be fitted    |  
 C     |   within the strategy we use.                            |  
 C     |   Both of the above also require modifying the support   |  
 C     |   routines that map computational blocks to simulation   |  
 C     |   domain blocks.                                         |  
 C     \==========================================================/  
       IMPLICIT NONE  
26    
27  C     === Global variables ===  C     !USES:
28          IMPLICIT NONE
29  #include "SIZE.h"  #include "SIZE.h"
30  #include "EEPARAMS.h"  #include "EEPARAMS.h"
31  #include "PARAMS.h"  #include "PARAMS.h"
32  #include "GRID.h"  #include "GRID.h"
33    #ifdef ALLOW_MNC
34    #include "MNC_PARAMS.h"
35    #endif
36    #ifdef ALLOW_MONITOR
37    #include "MONITOR.h"
38    #endif
39    
40  C     == Routine arguments ==  C     !INPUT/OUTPUT PARAMETERS:
41  C     myThid -  Number of this instance of INI_GRID  C     myThid  :: my Thread Id number
42        INTEGER myThid        INTEGER myThid
43  CEndOfInterface  CEOP
44    
45  C     == Local variables ==  C     === Functions ====
46  C     msgBuf - Used for informational I/O.        LOGICAL  MASTER_CPU_IO
47          EXTERNAL MASTER_CPU_IO
48    
49    C     !LOCAL VARIABLES:
50    C     msgBuf  :: Informational/error message buffer
51        CHARACTER*(MAX_LEN_MBUF) msgBuf        CHARACTER*(MAX_LEN_MBUF) msgBuf
52    #ifdef ALLOW_MNC
53          INTEGER i
54    #endif
55    
56    C     load grid spacing (vector) from files
57          CALL LOAD_GRID_SPACING( myThid )
58    
59  C--   Set up vertical grid and coordinate system  C     Set up vertical grid and coordinate system
60        CALL INI_VERTICAL_GRID( myThid )        CALL INI_VERTICAL_GRID( myThid )
61    
62  C--   Set up horizontal grid and coordinate system  C     Two examples are shown in this code. One illustrates the
63    C     initialization of a cartesian grid. The other shows the
64    C     inialization of a spherical polar grid. Other orthonormal grids
65    C     can be fitted into this design. In this case custom metric terms
66    C     also need adding to account for the projections of velocity
67    C     vectors onto these grids.  The structure used here also makes it
68    C     possible to implement less regular grid mappings. In particular:
69    C      o Schemes which leave out blocks of the domain that are
70    C        all land could be supported.
71    C      o Multi-level schemes such as icosohedral or cubic
72    C        grid projectedions onto a sphere can also be fitted
73    C       within the strategy we use.
74    C        Both of the above also require modifying the support
75    C        routines that map computational blocks to simulation
76    C        domain blocks.
77    
78    C     Set up horizontal grid and coordinate system
79        IF ( usingCartesianGrid ) THEN        IF ( usingCartesianGrid ) THEN
80         CALL INI_CARTESIAN_GRID( myThid )          CALL INI_CARTESIAN_GRID( myThid )
81        ELSEIF ( usingSphericalPolarGrid ) THEN        ELSEIF ( usingSphericalPolarGrid ) THEN
82         CALL INI_SPHERICAL_POLAR_GRID( myThid )          CALL INI_SPHERICAL_POLAR_GRID( myThid )
83        ELSEIF ( usingCurvilinearGrid ) THEN        ELSEIF ( usingCurvilinearGrid ) THEN
84         CALL INI_CURVILINEAR_GRID( myThid )          CALL INI_CURVILINEAR_GRID( myThid )
85          ELSEIF ( usingCylindricalGrid ) THEN
86            CALL INI_CYLINDER_GRID( myThid )
87        ELSE        ELSE
88         _BEGIN_MASTER(myThid)          _BEGIN_MASTER(myThid)
89          WRITE(msgBuf,'(A)')          WRITE(msgBuf,'(2A)') 'S/R INI_GRID: ',
90       &   'S/R INI_GRID: No grid coordinate system has been selected'       &       'No grid coordinate system has been selected'
91           CALL PRINT_ERROR( msgBuf , myThid)          CALL PRINT_ERROR( msgBuf , myThid)
92           STOP 'ABNORMAL END: S/R INI_GRID'          STOP 'ABNORMAL END: S/R INI_GRID'
93         _END_MASTER(myThid)          _END_MASTER(myThid)
94          ENDIF
95    
96    #ifdef ALLOW_MONITOR
97          IF ( MASTER_CPU_IO(myThid) ) THEN
98    C--   only the master thread is allowed to switch On/Off mon_write_stdout
99    C     & mon_write_mnc (since it is the only thread that uses those flags):
100    
101            IF (monitor_stdio) THEN
102              mon_write_stdout = .TRUE.
103            ELSE
104              mon_write_stdout = .FALSE.
105            ENDIF
106            mon_write_mnc = .FALSE.
107    #ifdef ALLOW_MNC
108            IF (useMNC .AND. monitor_mnc) THEN
109              DO i = 1,MAX_LEN_MBUF
110                mon_fname(i:i) = ' '
111              ENDDO
112              mon_fname(1:12) = 'monitor_grid'
113              CALL MNC_CW_SET_UDIM(mon_fname, 1, myThid)
114              mon_write_mnc = .TRUE.
115            ENDIF
116    #endif /*  ALLOW_MNC  */
117    
118          ENDIF
119    
120    C     Print out statistics of each horizontal grid array (helps when
121    C     debugging)
122          CALL MON_PRINTSTATS_RS(1,xC,'XC',myThid)
123          CALL MON_PRINTSTATS_RS(1,xG,'XG',myThid)
124          CALL MON_PRINTSTATS_RS(1,dxC,'DXC',myThid)
125          CALL MON_PRINTSTATS_RS(1,dxF,'DXF',myThid)
126          CALL MON_PRINTSTATS_RS(1,dxG,'DXG',myThid)
127          CALL MON_PRINTSTATS_RS(1,dxV,'DXV',myThid)
128          CALL MON_PRINTSTATS_RS(1,yC,'YC',myThid)
129          CALL MON_PRINTSTATS_RS(1,yG,'YG',myThid)
130          CALL MON_PRINTSTATS_RS(1,dyC,'DYC',myThid)
131          CALL MON_PRINTSTATS_RS(1,dyF,'DYF',myThid)
132          CALL MON_PRINTSTATS_RS(1,dyG,'DYG',myThid)
133          CALL MON_PRINTSTATS_RS(1,dyU,'DYU',myThid)
134          CALL MON_PRINTSTATS_RS(1,rA,'RA',myThid)
135          CALL MON_PRINTSTATS_RS(1,rAw,'RAW',myThid)
136          CALL MON_PRINTSTATS_RS(1,rAs,'RAS',myThid)
137          CALL MON_PRINTSTATS_RS(1,rAz,'RAZ',myThid)
138          CALL MON_PRINTSTATS_RS(1,angleCosC,'AngleCS',myThid)
139          CALL MON_PRINTSTATS_RS(1,angleSinC,'AngleSN',myThid)
140    
141          IF ( MASTER_CPU_IO(myThid) ) THEN
142            mon_write_stdout = .FALSE.
143            mon_write_mnc    = .FALSE.
144        ENDIF        ENDIF
145    #endif /* ALLOW_MONITOR */
146    
147  C--   Write certain grid data to files (useful for creating netCDF  C--   Everyone else must wait for the grid to be set
148  C     and general post-analysis)        _BARRIER
       CALL WRITE_FLD_XY_RS( 'XC',' ',XC,0,myThid)  
       CALL WRITE_FLD_XY_RS( 'YC',' ',YC,0,myThid)  
       CALL WRITE_FLD_XY_RS( 'XG',' ',XG,0,myThid)  
       CALL WRITE_FLD_XY_RS( 'YG',' ',YG,0,myThid)  
       CALL WRITE_FLD_XY_RS( 'AC',' ',rA,0,myThid)  
149    
150        RETURN        RETURN
151        END        END
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