/[MITgcm]/MITgcm/pkg/exf/exf_set_gen.F
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Contents of /MITgcm/pkg/exf/exf_set_gen.F

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Revision 1.4 - (show annotations) (download)
Thu Aug 7 02:31:29 2003 UTC (20 years, 10 months ago) by dimitri
Branch: MAIN
CVS Tags: checkpoint51f_pre
Changes since 1.3: +16 -6 lines
o Added on-the-fly spatial interpolation capability
    "USE_EXF_INTERPOLATION" to pkg/exf.
  - This is a temporary Cartesian-grid hack until
    the super-duper ESMF coupler becomes available.
  - See verification/global_with_exf/README for usage example.
  - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
    flags and modified pkg/seaice accordingly.
o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
    and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
    non-local transport term.

1 #include "EXF_CPPOPTIONS.h"
2
3 subroutine exf_set_gen(
4 & genfile, genstartdate, genperiod, exf_inscal_gen,
5 & genfld, gen0, gen1, genmask,
6 #ifdef USE_EXF_INTERPOLATION
7 & gen_lon0, gen_lon_inc, gen_lat0, gen_lat_inc,
8 & gen_nlon, gen_nlat, gen_xout, gen_yout,
9 #endif
10 & mycurrenttime, mycurrentiter, mythid )
11
12 c ==================================================================
13 c SUBROUTINE exf_set_gen
14 c ==================================================================
15 c
16 c o set external forcing gen
17 c
18 c started: Ralf.Giering@FastOpt.de 25-Mai-2000
19 c changed: heimbach@mit.edu 10-Jan-2002
20 c 20-Dec-2002: mods for pkg/seaice, menemenlis@jpl.nasa.gov
21 c heimbach@mit.edu: totally re-organized exf_set_...
22 c replaced all routines by one generic routine
23 c 5-Aug-2003: added USE_EXF_INTERPOLATION for arbitrary
24 c input grid capability
25
26 c ==================================================================
27 c SUBROUTINE exf_set_gen
28 c ==================================================================
29
30 implicit none
31
32 c == global variables ==
33
34 #include "EEPARAMS.h"
35 #include "SIZE.h"
36 #include "GRID.h"
37
38 #include "exf_param.h"
39 #include "exf_constants.h"
40
41 c == routine arguments ==
42
43 integer genstartdate(4)
44 _RL genperiod
45 _RL exf_inscal_gen
46 _RL genfld(1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
47 _RL gen0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
48 _RL gen1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
49 character*1 genmask
50 character*(128) genfile
51 _RL mycurrenttime
52 integer mycurrentiter
53 integer mythid
54 #ifdef USE_EXF_INTERPOLATION
55 c gen_lon_0 ,gen_lat_0 :: longitude and latitude of SouthWest
56 c corner of global input grid
57 c gen_nlon, gen_nlat :: input x-grid and y-grid size
58 c gen_lon_inc :: scalar x-grid increment
59 c gen_lat_inc :: vector y-grid increments
60 c gen_xout, gen_yout :: coordinates for output grid
61 _RL gen_lon0, gen_lon_inc
62 _RL gen_lat0, gen_lat_inc(MAX_LAT_INC)
63 INTEGER gen_nlon, gen_nlat
64 _RS gen_xout (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
65 _RS gen_yout (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
66 #endif
67
68 c == local variables ==
69
70 logical first, changed
71 integer count0, count1
72 _RL fac
73
74 integer bi, bj
75 integer i, j
76
77 c == end of interface ==
78
79 if ( genfile .NE. ' ' ) then
80
81 c get record numbers and interpolation factor for gen
82 call exf_GetFFieldRec(
83 I genstartdate, genperiod
84 O , fac, first, changed
85 O , count0, count1
86 I , mycurrenttime, mycurrentiter, mythid
87 & )
88
89 if ( first ) then
90 #ifdef USE_EXF_INTERPOLATION
91 call exf_interp( genfile, exf_iprec
92 & , gen1, count0, gen_xout, gen_yout
93 & , gen_lon0,gen_lon_inc
94 & , gen_lat0,gen_lat_inc
95 & , gen_nlon,gen_nlat,mythid
96 & )
97 #else
98 call mdsreadfield( genfile, exf_iprec, exf_yftype, 1
99 & , gen1, count0, mythid
100 & )
101 #endif
102
103 if (exf_yftype .eq. 'RL') then
104 call exf_filter_rl( gen1, genmask, mythid )
105 else
106 call exf_filter_rs( gen1, genmask, mythid )
107 end if
108 endif
109
110 if (( first ) .or. ( changed )) then
111 call exf_SwapFFields( gen0, gen1, mythid )
112
113 #ifdef USE_EXF_INTERPOLATION
114 call exf_interp( genfile, exf_iprec
115 & , gen1, count1, gen_xout, gen_yout
116 & , gen_lon0,gen_lon_inc
117 & , gen_lat0,gen_lat_inc
118 & , gen_nlon,gen_nlat,mythid
119 & )
120 #else
121 call mdsreadfield( genfile, exf_iprec, exf_yftype, 1
122 & , gen1, count1, mythid
123 & )
124 #endif
125
126 if (exf_yftype .eq. 'RL') then
127 call exf_filter_rl( gen1, genmask, mythid )
128 else
129 call exf_filter_rs( gen1, genmask, mythid )
130 end if
131 endif
132
133 c Loop over tiles.
134 do bj = mybylo(mythid),mybyhi(mythid)
135 do bi = mybxlo(mythid),mybxhi(mythid)
136 do j = 1,sny
137 do i = 1,snx
138
139 c Interpolate linearly onto the current time.
140
141 genfld(i,j,bi,bj) = exf_inscal_gen * (
142 & fac * gen0(i,j,bi,bj) +
143 & (exf_one - fac) * gen1(i,j,bi,bj) )
144
145 enddo
146 enddo
147 enddo
148 enddo
149
150 endif
151
152 end
153
154
155
156 subroutine exf_init_gen (
157 & genconst, genfld, gen0, gen1, mythid )
158
159 c ==================================================================
160 c SUBROUTINE exf_init_gen
161 c ==================================================================
162 c
163 c o
164 c
165 c started: Ralf.Giering@FastOpt.de 25-Mai-2000
166 c changed: heimbach@mit.edu 10-Jan-2002
167 c heimbach@mit.edu: totally re-organized exf_set_...
168 c replaced all routines by one generic routine
169 c
170 c ==================================================================
171 c SUBROUTINE exf_init_gen
172 c ==================================================================
173
174 implicit none
175
176 c == global variables ==
177
178 #include "EEPARAMS.h"
179 #include "SIZE.h"
180
181 #include "exf_param.h"
182
183 c == routine arguments ==
184
185 _RL genconst
186 _RL genfld(1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
187 _RL gen0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
188 _RL gen1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
189 integer mythid
190
191 c == local variables ==
192
193 integer bi, bj
194 integer i, j
195
196 c == end of interface ==
197
198 do bj = mybylo(mythid), mybyhi(mythid)
199 do bi = mybxlo(mythid), mybxhi(mythid)
200 do j = 1, sny
201 do i = 1, snx
202 genfld(i,j,bi,bj) = genconst
203 gen0(i,j,bi,bj) = 0. _d 0
204 gen1(i,j,bi,bj) = 0. _d 0
205 enddo
206 enddo
207 enddo
208 enddo
209
210 end

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