1 |
C $Header: /u/gcmpack/MITgcm/pkg/obcs/obcs_check_depths.F,v 1.4 2012/04/03 00:13:02 jmc Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "OBCS_OPTIONS.h" |
5 |
|
6 |
SUBROUTINE OBCS_CHECK_DEPTHS( myThid ) |
7 |
C *==========================================================* |
8 |
C | SUBROUTINE OBCS_CHECK_DEPTHS |
9 |
C | o Check for non-zero normal gradient across open |
10 |
C | boundaries |
11 |
C | o fix them if required and print a message |
12 |
C *==========================================================* |
13 |
C *==========================================================* |
14 |
IMPLICIT NONE |
15 |
|
16 |
C === Global variables === |
17 |
#include "SIZE.h" |
18 |
#include "EEPARAMS.h" |
19 |
#include "PARAMS.h" |
20 |
#include "GRID.h" |
21 |
#include "OBCS_PARAMS.h" |
22 |
#include "OBCS_GRID.h" |
23 |
|
24 |
C === Routine arguments === |
25 |
C myThid :: my Thread Id number |
26 |
INTEGER myThid |
27 |
|
28 |
#ifdef ALLOW_OBCS |
29 |
C === Local variables === |
30 |
C msgBuf :: Informational/error message buffer |
31 |
CHARACTER*(MAX_LEN_MBUF) msgBuf |
32 |
INTEGER bi, bj, i, j, ichanged |
33 |
|
34 |
IF ( OBCSfixTopo ) THEN |
35 |
C-- Modify topography to ensure that outward d(topography)/dn >= 0, |
36 |
C topography at open boundary points must be equal or shallower than |
37 |
C topography one grid-point inward from open boundary |
38 |
ichanged = 0 |
39 |
DO bj = myByLo(myThid), myByHi(myThid) |
40 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
41 |
|
42 |
#ifdef ALLOW_OBCS_NORTH |
43 |
DO i=1,sNx |
44 |
j = OB_Jn(i,bi,bj) |
45 |
IF ( j.NE.OB_indexNone ) THEN |
46 |
IF ( R_low(i,j,bi,bj) .LT. R_low(i,j-1,bi,bj) ) THEN |
47 |
ichanged = ichanged + 1 |
48 |
R_low(i,j,bi,bj) = R_low(i,j-1,bi,bj) |
49 |
WRITE(msgBuf,'(2A,2I6,2I4)') |
50 |
& 'OBCS_CHECK_DEPTHS: fixed topography at ', |
51 |
& '(i,j,bi,bj)=', i, j, bi, bj |
52 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
53 |
& SQUEEZE_RIGHT, myThid) |
54 |
ENDIF |
55 |
ENDIF |
56 |
ENDDO |
57 |
#endif |
58 |
#ifdef ALLOW_OBCS_SOUTH |
59 |
DO i=1,sNx |
60 |
j = OB_Js(i,bi,bj) |
61 |
IF ( j.NE.OB_indexNone ) THEN |
62 |
IF ( R_low(i,j,bi,bj) .LT. R_low(i,j+1,bi,bj) ) THEN |
63 |
ichanged = ichanged + 1 |
64 |
R_low(i,j,bi,bj) = R_low(i,j+1,bi,bj) |
65 |
WRITE(msgBuf,'(2A,2I6,2I4)') |
66 |
& 'OBCS_CHECK_DEPTHS: fixed topography at ', |
67 |
& '(i,j,bi,bj)=', i, j, bi, bj |
68 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
69 |
& SQUEEZE_RIGHT, myThid) |
70 |
ENDIF |
71 |
ENDIF |
72 |
ENDDO |
73 |
#endif |
74 |
#ifdef ALLOW_OBCS_EAST |
75 |
DO j=1,sNy |
76 |
i = OB_Ie(j,bi,bj) |
77 |
IF ( i.NE.OB_indexNone ) THEN |
78 |
IF ( R_low(i,j,bi,bj) .LT. R_low(i-1,j,bi,bj) ) THEN |
79 |
ichanged = ichanged + 1 |
80 |
R_low(i,j,bi,bj) = R_low(i-1,j,bi,bj) |
81 |
WRITE(msgBuf,'(2A,2I6,2I4)') |
82 |
& 'OBCS_CHECK_DEPTHS: fixed topography at ', |
83 |
& '(i,j,bi,bj)=', i, j, bi, bj |
84 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
85 |
& SQUEEZE_RIGHT, myThid) |
86 |
ENDIF |
87 |
ENDIF |
88 |
ENDDO |
89 |
#endif |
90 |
C Western boundary |
91 |
#ifdef ALLOW_OBCS_WEST |
92 |
DO j=1,sNy |
93 |
i = OB_Iw(j,bi,bj) |
94 |
IF ( i.NE.OB_indexNone ) THEN |
95 |
IF ( R_low(i,j,bi,bj) .LT. R_low(i+1,j,bi,bj) ) THEN |
96 |
ichanged = ichanged + 1 |
97 |
R_low(i,j,bi,bj) = R_low(i+1,j,bi,bj) |
98 |
WRITE(msgBuf,'(2A,2I6,2I4)') |
99 |
& 'OBCS_CHECK_DEPTHS: fixed topography at ', |
100 |
& '(i,j,bi,bj)=', i, j, bi, bj |
101 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
102 |
& SQUEEZE_RIGHT, myThid) |
103 |
ENDIF |
104 |
ENDIF |
105 |
ENDDO |
106 |
#endif |
107 |
|
108 |
ENDDO |
109 |
ENDDO |
110 |
C-- some diagnostics to stdout |
111 |
CALL GLOBAL_SUM_INT( ichanged, myThid ) |
112 |
IF ( ichanged .GT. 0 ) THEN |
113 |
_BEGIN_MASTER(myThid) |
114 |
WRITE(msgBuf,'(2A,I7,A)') 'OBCS_CHECK_DEPTHS: ', |
115 |
& 'Topography gradients normal to open boundaries:' |
116 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
117 |
& SQUEEZE_RIGHT, myThid ) |
118 |
WRITE(msgBuf,'(2A,I7,A)') 'OBCS_CHECK_DEPTHS: ', |
119 |
& '==> corrected ', ichanged,' problematic grid-points' |
120 |
c WRITE(msgBuf,'(A,I7,A,A)') |
121 |
c & 'OBCS message: corrected ', ichanged, |
122 |
c & ' instances of problematic topography gradients', |
123 |
c & ' normal to open boundaries' |
124 |
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
125 |
& SQUEEZE_RIGHT, myThid ) |
126 |
_END_MASTER(myThid) |
127 |
ENDIF |
128 |
|
129 |
C endif (OBCSfixTopo) |
130 |
ENDIF |
131 |
#endif /* ALLOW_OBCS */ |
132 |
|
133 |
RETURN |
134 |
END |