/[MITgcm]/MITgcm_contrib/submesoscale/code/gmredi_readparms.F
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Revision 1.2 - (show annotations) (download)
Fri May 30 22:13:42 2008 UTC (17 years, 1 month ago) by dimitri
Branch: MAIN
Changes since 1.1: +20 -2 lines
Initial code submitted by Baylor on May 19, 2008.  See:
http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-May/003392.html

1 C $Header: /u/gcmpack/MITgcm/pkg/gmredi/gmredi_readparms.F,v 1.16 2007/06/20 22:11:10 jmc Exp $
2 C $Name: $
3
4 #include "GMREDI_OPTIONS.h"
5
6 CBOP
7 C !ROUTINE: GMREDI_READPARMS
8 C !INTERFACE:
9 SUBROUTINE GMREDI_READPARMS( myThid )
10
11 C !DESCRIPTION: \bv
12 C *==========================================================*
13 C | SUBROUTINE GMREDI_READPARMS
14 C | o Routine to initialize GM/Redi variables and constants.
15 C *==========================================================*
16 C | Initialize GM/Redi parameters, read in data.gmredi
17 C *==========================================================*
18 C \ev
19
20 C !USES:
21 IMPLICIT NONE
22
23 C === Global variables ===
24 #include "SIZE.h"
25 #include "EEPARAMS.h"
26 #include "PARAMS.h"
27 #include "GRID.h"
28 #include "GMREDI.h"
29
30 C !INPUT/OUTPUT PARAMETERS:
31 C === Routine arguments ===
32 INTEGER myThid
33
34 #ifdef ALLOW_GMREDI
35 C !LOCAL VARIABLES:
36 C === Local variables ===
37 C msgBuf - Informational/error meesage buffer
38 C iUnit - Work variable for IO unit number
39 CHARACTER*(MAX_LEN_MBUF) msgBuf
40 INTEGER iUnit
41 CEOP
42
43 C-- GM/Redi parameter
44 C GM_Small_Number :: epsilon used in computing the slope
45 C GM_slopeSqCutoff :: slope^2 cut-off value
46 NAMELIST /GM_PARM01/
47 & GM_AdvForm, GM_AdvSeparate,
48 & GM_ExtraDiag,
49 & GM_isopycK,
50 & GM_background_K,
51 & GM_taper_scheme,
52 & GM_maxSlope,
53 & GM_Kmin_horiz,
54 & GM_Small_Number, GM_slopeSqCutoff,
55 & GM_Visbeck_alpha,
56 & GM_Visbeck_length,
57 & GM_Visbeck_depth,
58 & GM_Visbeck_maxval_K,
59 & GM_Scrit,
60 & GM_Sd,
61 & GM_MNC,
62 & GM_SM_Ce,
63 & GM_SM_Lf,
64 & GM_SM_tau
65 c & GM_dumpFreq,
66 c & GM_taveFreq
67
68 _BEGIN_MASTER(myThid)
69
70 C-- GMREDI_READPARMS has been called so we know that
71 C the package is active.
72 GMRediIsOn = .TRUE.
73
74 C-- Default values GM/Redi
75 GM_AdvForm = .FALSE.
76 GM_ExtraDiag = .FALSE.
77 GM_AdvSeparate = .FALSE.
78 GM_isopycK = -999.
79 GM_background_K = 0. _d 0
80 GM_maxslope = 1. _d -2
81 GM_Kmin_horiz = 0. _d 0
82 GM_Small_Number = 1. _d -20
83 GM_slopeSqCutoff = 1. _d +48
84 GM_taper_scheme = ' '
85 GM_Scrit = 0.004 _d 0
86 GM_Sd = 0.001 _d 0
87 GM_MNC = useMNC
88 CBFK Submesoscale Paramters
89 C GM_SM_Ce is the efficiency factor. Nondimensional, typically 0.06
90 C Will be converted to a dimensional factor later
91 C Set to zero to kill Submeso at runtime.
92 GM_SM_Ce = 0.06 _d 0
93 C GM_SM_Lf is the minimum Front Width scale. Typically 1-10km
94 GM_SM_Lf = 5.00 _d 3
95 C GM_SM_Lmax is the maximum upscale. Typically 100km
96 GM_SM_Lmax = 1.00 _d 5
97 C GM_SM_tau is the momentum mixing timescale: 1/d to 1/week
98 GM_SM_tau = 8.64 _d 4
99 C Will be converted to an inverse squared timescale later
100
101 C-- Default values GM/Redi I/O control
102 c GM_dumpFreq = -1.
103 c GM_taveFreq = -1.
104
105 C-- Default values Visbeck
106 GM_Visbeck_alpha = 0. _d 0
107 GM_Visbeck_length = 200. _d 3
108 GM_Visbeck_depth = 1000. _d 0
109 GM_Visbeck_maxval_K = 2500. _d 0
110
111 WRITE(msgBuf,'(A)') ' GM_READPARMS: opening data.gmredi'
112 CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
113 & SQUEEZE_RIGHT , 1)
114 CALL OPEN_COPY_DATA_FILE(
115 I 'data.gmredi', 'GM_READPARMS',
116 O iUnit,
117 I myThid )
118
119 C Read parameters from open data file
120 READ(UNIT=iUnit,NML=GM_PARM01)
121 WRITE(msgBuf,'(A)') ' GM_READPARMS: finished reading data.gmredi'
122 CALL PRINT_MESSAGE( msgBuf, standardMessageUnit,
123 & SQUEEZE_RIGHT , 1)
124 C Close the open data file
125 CLOSE(iUnit)
126
127 C Default value for GM_isopycK is equal to GM_background_K :
128 IF (GM_isopycK.EQ.-999.) GM_isopycK = GM_background_K
129
130 C Some constants
131 GM_rMaxSlope=0.
132 if (GM_maxSlope.ne.0.) GM_rMaxSlope=1. / GM_maxSlope
133
134 IF (GM_AdvForm) THEN
135 GM_skewflx = 0.
136 GM_advect = 1.
137 GM_ExtraDiag = GM_Visbeck_alpha.NE.0. .OR. GM_isopycK.NE.0.
138 ELSE
139 GM_skewflx = 1.
140 GM_advect = 0.
141 GM_ExtraDiag = (GM_isopycK.NE.GM_background_K)
142 & .or.(GM_SM_Ce.gt.0 _d 0)
143 ENDIF
144
145 C Make sure that we locally honor the global MNC on/off flag
146 GM_MNC = GM_MNC .AND. useMNC
147 #ifndef ALLOW_MNC
148 C Fix to avoid running without getting any output:
149 GM_MNC = .FALSE.
150 #endif
151 GM_MDSIO = (.NOT. GM_MNC) .OR. outputTypesInclusive
152
153 _END_MASTER(myThid)
154
155 C-- Everyone else must wait for the parameters to be loaded
156 _BARRIER
157
158 #endif /* ALLOW_GMREDI */
159
160 RETURN
161 END

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