1 |
C $Header: /u/gcmpack/MITgcm/pkg/cost/Attic/cost_ssh_mean.F,v 1.1.2.3 2002/04/04 10:58:59 heimbach Exp $ |
2 |
|
3 |
#include "COST_CPPOPTIONS.h" |
4 |
|
5 |
|
6 |
subroutine cost_ssh_mean( |
7 |
I psmean, offset |
8 |
O , costmean |
9 |
I , mythid |
10 |
& ) |
11 |
|
12 |
c ================================================================== |
13 |
c SUBROUTINE cost_ssh_mean |
14 |
c ================================================================== |
15 |
c |
16 |
c o Evaluate cost function contribution of sea surface height. |
17 |
c using of geoid error covariances requires regular model grid |
18 |
c o TODO: interpolate model grid to regular grid |
19 |
c check mask |
20 |
c |
21 |
c started: Detlef Stammer, Ralf Giering Jul-1996 |
22 |
c changed: Ralf Giering Ralf.Giering@FastOpt.de 12-Jun-2001 |
23 |
c - totally rewrite for parallel processing |
24 |
c heimbach@mit.edu 13-Mar-2002 |
25 |
c - several wrong i-loop boundaries (spotted by G. Gebbie) |
26 |
c - nprocs need to be replaced by nPx*nPy |
27 |
c - geoid error does not work as of now |
28 |
c |
29 |
c ================================================================== |
30 |
c SUBROUTINE cost_ssh_mean |
31 |
c ================================================================== |
32 |
|
33 |
implicit none |
34 |
|
35 |
c == global variables == |
36 |
|
37 |
#include "EEPARAMS.h" |
38 |
#include "SIZE.h" |
39 |
#include "PARAMS.h" |
40 |
|
41 |
#include "ecco_cost.h" |
42 |
|
43 |
#ifdef ALLOW_EGM96_ERROR_COV |
44 |
# include "EESUPPORT.h" |
45 |
# include "cost_sph.h" |
46 |
#endif |
47 |
|
48 |
c == routine arguments == |
49 |
|
50 |
_RL psmean ( 1-olx:snx+olx, 1-oly:sny+oly, nsx, nsy ) |
51 |
_RL offset |
52 |
_RL costmean |
53 |
integer mythid |
54 |
|
55 |
c == local variables == |
56 |
|
57 |
integer bi,bj |
58 |
integer i,j |
59 |
integer itlo,ithi |
60 |
integer jtlo,jthi |
61 |
integer jmin,jmax |
62 |
integer imin,imax |
63 |
|
64 |
#ifdef ALLOW_EGM96_ERROR_COV |
65 |
_RL cphi |
66 |
_RL xmean |
67 |
_RL shc( ncshc ) |
68 |
_RL misfit ( 1-olx:snx+olx, 1-oly:sny+oly, nsx,nsy ) |
69 |
_RL misfitgl( 1-olx:snx+olx, 1-oly:sny+oly, nsx,nsy, npx,npy ) |
70 |
|
71 |
_RL pwork ( (lshcmax+1)*(lshcmax+2)/2 ) |
72 |
_RL diffearth ( lonshc, latshc ) |
73 |
integer joffset |
74 |
integer ipx, ipy |
75 |
integer iglobe, jglobe |
76 |
integer iproc |
77 |
integer mpirc |
78 |
integer mpicrd(2) |
79 |
#endif |
80 |
|
81 |
_RL diff |
82 |
Real*8 sumc |
83 |
|
84 |
c == end of interface == |
85 |
|
86 |
c-- Initialise local variables. |
87 |
jtlo = mybylo(mythid) |
88 |
jthi = mybyhi(mythid) |
89 |
itlo = mybxlo(mythid) |
90 |
ithi = mybxhi(mythid) |
91 |
|
92 |
jmin = 1 |
93 |
jmax = sny |
94 |
imin = 1 |
95 |
imax = snx |
96 |
|
97 |
costmean = 0. |
98 |
|
99 |
#ifdef ALLOW_EGM96_ERROR_COV |
100 |
|
101 |
c-- compute misfit on local domain |
102 |
do bj = jtlo,jthi |
103 |
do bi = itlo,ithi |
104 |
do j = jmin,jmax |
105 |
do i = imin,imax |
106 |
if ( tpmeanmask(i,j,bi,bj) .gt. 0. ) then |
107 |
misfit(i,j,bi,bj) = |
108 |
& tpmean(i,j,bi,bj) - offset - psmean(i,j,bi,bj) |
109 |
else |
110 |
misfit(i,j,bi,bj) = 0. |
111 |
endif |
112 |
enddo |
113 |
enddo |
114 |
enddo |
115 |
enddo |
116 |
|
117 |
c-- communicate to get misfit on full 2d model surface grid |
118 |
call exch_all_2d_rl( misfit, misfitgl, mythid ) |
119 |
|
120 |
c-- set meridional index offset, |
121 |
c-- it is non zero if the grid does no reach the poles |
122 |
joffset = (latshc - ny)/2 |
123 |
|
124 |
_BEGIN_MASTER( mythid ) |
125 |
print * |
126 |
print *, ' cost_SSH: grid starts at point ', joffset |
127 |
& , ' of full earth.' |
128 |
_END_MASTER( mythid ) |
129 |
|
130 |
c-- preset field |
131 |
c-- necessary if the grid does no reach the poles |
132 |
do j = 1, latshc |
133 |
do i = 1, lonshc |
134 |
diffearth(i,j) = 0. |
135 |
enddo |
136 |
enddo |
137 |
|
138 |
c-- -interpolate- from model grid to regular grid |
139 |
c-- so far we assume that the model grid is already regular |
140 |
_BEGIN_MASTER( mythid ) |
141 |
|
142 |
do iproc = 1, nprocs |
143 |
|
144 |
c-- get coordinates of processor (iporc-1) |
145 |
call MPI_Cart_coords( |
146 |
I MPI_COMM_MODEL, iproc-1, 2, mpicrd |
147 |
O , mpirc |
148 |
& ) |
149 |
|
150 |
ipx = 1 + mpicrd(1) |
151 |
ipy = 1 + mpicrd(2) |
152 |
|
153 |
do bj = jtlo,jthi |
154 |
do bi = itlo,ithi |
155 |
|
156 |
do j = jmin,jmax |
157 |
do i = imin,imax |
158 |
jglobe = joffset+ j + sNy*(bj-1) + sNy*nSy*(ipy-1) |
159 |
iglobe = i + sNx*(bi-1) + sNx*nSx*(ipx-1) |
160 |
|
161 |
diffearth(iglobe,jglobe) = misfitgl(i,j,bi,bj,ipx,ipy) |
162 |
enddo |
163 |
enddo |
164 |
|
165 |
enddo |
166 |
enddo |
167 |
|
168 |
enddo |
169 |
|
170 |
c-- Project regular grid misfit onto sperical harmonics |
171 |
call shc4grid( |
172 |
I lshcmax |
173 |
O , shc |
174 |
I , latshc, lonshc |
175 |
I , diffearth |
176 |
W , pwork |
177 |
& ) |
178 |
|
179 |
c-- Remove the C(0,0) component, i.e. the global mean. |
180 |
shc(1) = 0. |
181 |
|
182 |
C-- Compute the cost function for the mean SSH. |
183 |
call cost_geoid( |
184 |
O costmean |
185 |
I , shc |
186 |
I , mythid |
187 |
& ) |
188 |
|
189 |
_END_MASTER( mythid ) |
190 |
|
191 |
_BARRIER |
192 |
|
193 |
#else |
194 |
|
195 |
c-- Compute cost function for SSH by using the diagonal |
196 |
c-- of the error covariance only. |
197 |
c-- |
198 |
c-- Note: wp is assumed to include latitude dependence |
199 |
c-- of error due to meridian convergence; |
200 |
c-- --> no weighting by cosphi. |
201 |
|
202 |
sumc = 0. |
203 |
do bj = jtlo,jthi |
204 |
do bi = itlo,ithi |
205 |
do j = jmin,jmax |
206 |
do i = imin,imax |
207 |
diff = psmean(i,j,bi,bj) - tpmean(i,j,bi,bj) + offset |
208 |
sumc = sumc + diff*diff |
209 |
& * wp(i,j,bi,bj)*tpmeanmask(i,j,bi,bj) |
210 |
ce --> check masks! |
211 |
enddo |
212 |
enddo |
213 |
enddo |
214 |
enddo |
215 |
|
216 |
c-- Do the global summation. |
217 |
_GLOBAL_SUM_R8( sumc, mythid ) |
218 |
costmean = sumc |
219 |
#endif |
220 |
|
221 |
end |