41 |
I lat_0, lat_inc, |
I lat_0, lat_inc, |
42 |
I nx_in, ny_in, method, mythid) |
I nx_in, ny_in, method, mythid) |
43 |
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44 |
implicit none |
C |
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45 |
C infile = name of the input file (direct access binary) |
C infile = name of the input file (direct access binary) |
46 |
C filePrec = file precicision (currently not used, assumes real*4) |
C filePrec = file precicision (currently not used, assumes real*4) |
47 |
C arrout = output arrays (different for each processor) |
C arrout = output arrays (different for each processor) |
57 |
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58 |
#include "SIZE.h" |
#include "SIZE.h" |
59 |
#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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60 |
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61 |
C subroutine variables |
C subroutine variables |
62 |
character*(*) infile |
character*(*) infile |
69 |
integer method, mythid |
integer method, mythid |
70 |
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71 |
C local variables |
C local variables |
72 |
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integer ierr |
73 |
real*8 ne_fac,nw_fac,se_fac,sw_fac |
real*8 ne_fac,nw_fac,se_fac,sw_fac |
74 |
integer e_ind(snx,sny),w_ind(snx,sny) |
integer e_ind(snx),w_ind(snx) |
75 |
integer n_ind(snx,sny),s_ind(snx,sny) |
integer n_ind(sny),s_ind(sny) |
76 |
real*8 px_ind(4), py_ind(4), ew_val(4) |
real*8 px_ind(4), py_ind(4), ew_val(4) |
77 |
external lagran |
external lagran |
78 |
real*8 lagran |
real*8 lagran |
80 |
real*8 x_in (-1:nx_in+2), y_in(-1:ny_in+2) |
real*8 x_in (-1:nx_in+2), y_in(-1:ny_in+2) |
81 |
integer i, j, k, l, js, bi, bj, sp, interp_unit |
integer i, j, k, l, js, bi, bj, sp, interp_unit |
82 |
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83 |
call exf_interp_read( |
C check input arguments |
84 |
I infile, |
if ( .NOT. (filePrec .EQ. 32) ) |
85 |
I filePrec, |
& stop 'stop in exf_interp.F: value of filePrec not allowed' |
86 |
O arrayin, |
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87 |
I irecord, xG, yG, |
C read in input data |
88 |
I lon_0, lon_inc, |
call mdsfindunit( interp_unit, mythid) |
89 |
I lat_0, lat_inc, |
open(interp_unit,file=infile,status='old',access='direct', |
90 |
I nx_in, ny_in, method, mythid) |
& recl=nx_in*ny_in*4) |
91 |
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read(interp_unit,rec=irecord) ((arrayin(i,j),i=1,nx_in),j=1,ny_in) |
92 |
_BEGIN_MASTER( myThid ) |
#ifdef _BYTESWAPIO |
93 |
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call MDS_BYTESWAPR4((nx_in+4)*(ny_in+4), arrayin ) |
94 |
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#endif |
95 |
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close(interp_unit) |
96 |
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97 |
C setup input grid |
C setup input grid |
98 |
do i=-1,nx_in+2 |
do i=-1,nx_in+2 |
99 |
x_in(i) = lon_0 + (i-1.)*lon_inc |
x_in(i) = lon_0 + (i-1.)*lon_inc |
100 |
enddo |
enddo |
101 |
y_in(0) = lat_0 - lat_inc(1) |
y_in(0) = lat_0 - lat_inc(1) |
102 |
y_in(-1)= lat_0 - 2.*lat_inc(1) |
y_in(-1)= lat_0 - 2.*lat_inc(1) |
103 |
y_in(1) = lat_0 |
y_in(1) = lat_0 |
104 |
do j=2,ny_in |
do j=2,ny_in |
105 |
y_in(j) = y_in(j-1) + lat_inc(j-1) |
y_in(j) = y_in(j-1) + lat_inc(j-1) |
106 |
enddo |
enddo |
107 |
y_in(ny_in+1) = y_in(ny_in) + lat_inc(ny_in-1) |
y_in(ny_in+1) = y_in(ny_in) + lat_inc(ny_in-1) |
108 |
y_in(ny_in+2) = y_in(ny_in) + 2.*lat_inc(ny_in-1) |
y_in(ny_in+2) = y_in(ny_in) + 2.*lat_inc(ny_in-1) |
109 |
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110 |
C enlarge boundary |
C enlarge boundary |
111 |
do j=1,ny_in |
do j=1,ny_in |
112 |
arrayin(0,j) = arrayin(nx_in,j) |
arrayin(0,j) = arrayin(nx_in,j) |
113 |
arrayin(-1,j) = arrayin(nx_in-1,j) |
arrayin(-1,j) = arrayin(nx_in-1,j) |
114 |
arrayin(nx_in+1,j) = arrayin(1,j) |
arrayin(nx_in+1,j) = arrayin(1,j) |
115 |
arrayin(nx_in+2,j) = arrayin(2,j) |
arrayin(nx_in+2,j) = arrayin(2,j) |
116 |
enddo |
enddo |
117 |
do i=-1,nx_in+2 |
do i=-1,nx_in+2 |
118 |
arrayin(i,0) = arrayin(i,1) |
arrayin(i,0) = arrayin(i,1) |
119 |
arrayin(i,-1) = arrayin(i,1) |
arrayin(i,-1) = arrayin(i,1) |
120 |
arrayin(i,ny_in+1) = arrayin(i,ny_in) |
arrayin(i,ny_in+1) = arrayin(i,ny_in) |
121 |
arrayin(i,ny_in+2) = arrayin(i,ny_in) |
arrayin(i,ny_in+2) = arrayin(i,ny_in) |
122 |
enddo |
enddo |
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_END_MASTER( myThid ) |
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123 |
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124 |
do bj = mybylo(mythid), mybyhi(mythid) |
do bj = mybylo(mythid), mybyhi(mythid) |
125 |
do bi = mybxlo(mythid), mybxhi(mythid) |
do bi = mybxlo(mythid), mybxhi(mythid) |
126 |
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127 |
C check validity of input/output coordinates |
C check validity of input/output coordinates |
128 |
#ifdef ALLOW_DEBUG |
if ( xG(1,1 ,bi,bj) .le. x_in(0) .or. |
129 |
if ( debugLevel .ge. debLevB ) then |
& xG(snx,1,bi,bj) .ge. x_in(nx_in+1) .or. |
130 |
do i=1,snx |
& yG(1,1 ,bi,bj) .lt. y_in(1) .or. |
131 |
do j=1,sny |
& yG(1,sny,bi,bj) .gt. y_in(ny_in) ) then |
132 |
if ( xG(i,j,bi,bj) .lt. x_in(0) .or. |
print*,'ERROR in S/R EXF_INTERP:' |
133 |
& xG(i,j,bi,bj) .ge. x_in(nx_in+1) .or. |
print*,' input grid must encompass output grid.' |
134 |
& yG(i,j,bi,bj) .lt. y_in(0) .or. |
STOP ' ABNORMAL END: S/R EXF_INTERP' |
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& yG(i,j,bi,bj) .ge. y_in(ny_in+1) ) then |
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print*,'ERROR in S/R EXF_INTERP:' |
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print*,' input grid must encompass output grid.' |
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print*,'i,j,bi,bj' ,i,j,bi,bj |
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print*,'xG,yG' ,xG(i,j,bi,bj),yG(i,j,bi,bj) |
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print*,'nx_in,ny_in' ,nx_in ,ny_in |
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print*,'x_in(0,nx_in+1)',x_in(0) ,x_in(nx_in+1) |
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print*,'y_in(0,ny_in+1)',y_in(0) ,y_in(ny_in+1) |
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STOP ' ABNORMAL END: S/R EXF_INTERP' |
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endif |
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enddo |
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enddo |
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135 |
endif |
endif |
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#endif /* ALLOW_DEBUG */ |
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136 |
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137 |
C compute interpolation indices |
C compute interpolation indices |
138 |
do i=1,snx |
do i=1,snx |
139 |
do j=1,sny |
if (xG(i,1,bi,bj)-x_in(1) .ge. 0.) then |
140 |
if (xG(i,j,bi,bj)-x_in(1) .ge. 0.) then |
w_ind(i) = int((xG(i,1,bi,bj)-x_in(1))/lon_inc) + 1 |
141 |
w_ind(i,j) = int((xG(i,j,bi,bj)-x_in(1))/lon_inc) + 1 |
else |
142 |
else |
w_ind(i) = int((xG(i,1,bi,bj)-x_in(1))/lon_inc) |
143 |
w_ind(i,j) = int((xG(i,j,bi,bj)-x_in(1))/lon_inc) |
endif |
144 |
endif |
e_ind(i) = w_ind(i) + 1 |
145 |
e_ind(i,j) = w_ind(i,j) + 1 |
enddo |
146 |
js = ny_in*.5 |
js = ny_in/2 |
147 |
do while (yG(i,j,bi,bj) .lt. y_in(js)) |
do j=1,sny |
148 |
js = (js - 1)*.5 |
do while (yG(1,j,bi,bj) .lt. y_in(js)) |
149 |
enddo |
js = (js + 1)/2 |
150 |
do while (yG(i,j,bi,bj) .ge. y_in(js+1)) |
enddo |
151 |
js = js + 1 |
do while (yG(1,j,bi,bj) .ge. y_in(js+1)) |
152 |
enddo |
js = js + 1 |
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s_ind(i,j) = js |
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n_ind(i,j) = js + 1 |
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153 |
enddo |
enddo |
154 |
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s_ind(j) = js |
155 |
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n_ind(j) = js + 1 |
156 |
enddo |
enddo |
157 |
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158 |
if (method .eq. 1) then |
if (method .eq. 1) then |
163 |
do i=1,snx |
do i=1,snx |
164 |
arrayout(i,j,bi,bj) = 0. |
arrayout(i,j,bi,bj) = 0. |
165 |
do l=0,1 |
do l=0,1 |
166 |
px_ind(l+1) = x_in(w_ind(i,j)+l) |
px_ind(l+1) = x_in(w_ind(i)+l) |
167 |
py_ind(l+1) = y_in(s_ind(i,j)+l) |
py_ind(l+1) = y_in(s_ind(j)+l) |
168 |
enddo |
enddo |
169 |
do k=1,2 |
do k=1,2 |
170 |
ew_val(k) = arrayin(w_ind(i,j),s_ind(i,j)+k-1) |
ew_val(k) = arrayin(w_ind(i),s_ind(j)+k-1) |
171 |
& *lagran(1,xG(i,j,bi,bj),px_ind,sp) |
& *lagran(1,xG(i,1,bi,bj),px_ind,sp) |
172 |
& +arrayin(e_ind(i,j),s_ind(i,j)+k-1) |
& +arrayin(e_ind(i),s_ind(j)+k-1) |
173 |
& *lagran(2,xG(i,j,bi,bj),px_ind,sp) |
& *lagran(2,xG(i,1,bi,bj),px_ind,sp) |
174 |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
175 |
& +ew_val(k)*lagran(k,yG(i,j,bi,bj),py_ind,sp) |
& +ew_val(k)*lagran(k,yG(1,j,bi,bj),py_ind,sp) |
176 |
enddo |
enddo |
177 |
enddo |
enddo |
178 |
enddo |
enddo |
184 |
do i=1,snx |
do i=1,snx |
185 |
arrayout(i,j,bi,bj) = 0. |
arrayout(i,j,bi,bj) = 0. |
186 |
do l=-1,2 |
do l=-1,2 |
187 |
px_ind(l+2) = x_in(w_ind(i,j)+l) |
px_ind(l+2) = x_in(w_ind(i)+l) |
188 |
py_ind(l+2) = y_in(s_ind(i,j)+l) |
py_ind(l+2) = y_in(s_ind(j)+l) |
189 |
enddo |
enddo |
190 |
do k=1,4 |
do k=1,4 |
191 |
ew_val(k) = |
ew_val(k) = |
192 |
& arrayin(w_ind(i,j)-1,s_ind(i,j)+k-2) |
& arrayin(w_ind(i)-1,s_ind(j)+k-2) |
193 |
& *lagran(1,xG(i,j,bi,bj),px_ind,sp) |
& *lagran(1,xG(i,1,bi,bj),px_ind,sp) |
194 |
& +arrayin(w_ind(i,j) ,s_ind(i,j)+k-2) |
& +arrayin(w_ind(i) ,s_ind(j)+k-2) |
195 |
& *lagran(2,xG(i,j,bi,bj),px_ind,sp) |
& *lagran(2,xG(i,1,bi,bj),px_ind,sp) |
196 |
& +arrayin(e_ind(i,j) ,s_ind(i,j)+k-2) |
& +arrayin(e_ind(i) ,s_ind(j)+k-2) |
197 |
& *lagran(3,xG(i,j,bi,bj),px_ind,sp) |
& *lagran(3,xG(i,1,bi,bj),px_ind,sp) |
198 |
& +arrayin(e_ind(i,j)+1,s_ind(i,j)+k-2) |
& +arrayin(e_ind(i)+1,s_ind(j)+k-2) |
199 |
& *lagran(4,xG(i,j,bi,bj),px_ind,sp) |
& *lagran(4,xG(i,1,bi,bj),px_ind,sp) |
200 |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
201 |
& +ew_val(k)*lagran(k,yG(i,j,bi,bj),py_ind,sp) |
& +ew_val(k)*lagran(k,yG(1,j,bi,bj),py_ind,sp) |
202 |
enddo |
enddo |
203 |
enddo |
enddo |
204 |
enddo |
enddo |