36 |
I infile, |
I infile, |
37 |
I filePrec, |
I filePrec, |
38 |
O arrayout, |
O arrayout, |
39 |
I irecord, xG, yG, |
I irecord, xG_in, yG, |
40 |
I lon_0, lon_inc, |
I lon_0, lon_inc, |
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) |
52 |
C lon_inc = scalar x-grid increment |
C lon_inc = scalar x-grid increment |
53 |
C lat_inc = vector y-grid increments |
C lat_inc = vector y-grid increments |
54 |
C nx_in, ny_in = input x-grid and y-grid size |
C nx_in, ny_in = input x-grid and y-grid size |
55 |
C method = 1 for bilinear 2 for bicubic |
C method = 1,11,21 for bilinear; 2,12,22 for bicubic |
56 |
|
C 1,2 for tracer; 11,12 for U; 21,22 for V |
57 |
C mythid = thread id |
C mythid = thread id |
58 |
C |
C |
59 |
|
|
60 |
#include "SIZE.h" |
#include "SIZE.h" |
61 |
#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
62 |
#ifdef ALLOW_USE_MPI |
#include "PARAMS.h" |
|
# include "EESUPPORT.h" |
|
|
# include "PARAMS.h" |
|
|
#endif /* ALLOW_USE_MPI */ |
|
63 |
|
|
64 |
C subroutine variables |
C subroutine variables |
65 |
character*(*) infile |
character*(*) infile |
66 |
integer filePrec, irecord, nx_in, ny_in |
integer filePrec, irecord, nx_in, ny_in |
67 |
_RL arrayout(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
_RL arrayout(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
68 |
_RS xG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
_RS xG_in (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
69 |
_RS yG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
_RS yG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
70 |
_RL lon_0, lon_inc |
_RL lon_0, lon_inc |
71 |
_RL lat_0, lat_inc(ny_in-1) |
_RL lat_0, lat_inc(ny_in-1) |
72 |
integer method, mythid |
integer method, mythid |
73 |
|
|
74 |
C local variables |
C local variables |
75 |
integer ierr |
integer e_ind(snx,sny),w_ind(snx,sny) |
76 |
real*8 ne_fac,nw_fac,se_fac,sw_fac |
integer n_ind(snx,sny),s_ind(snx,sny) |
|
integer e_ind(snx),w_ind(snx) |
|
|
integer n_ind(sny),s_ind(sny) |
|
77 |
real*8 px_ind(4), py_ind(4), ew_val(4) |
real*8 px_ind(4), py_ind(4), ew_val(4) |
78 |
external lagran |
external lagran |
79 |
real*8 lagran |
real*8 lagran |
80 |
real*4 arrayin(-1:nx_in+2 , -1:ny_in+2) |
real*4 arrayin(-1:nx_in+2 , -1:ny_in+2) |
81 |
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) |
82 |
integer i, j, k, l, js, bi, bj, interp_unit, sp |
real*8 ninety |
83 |
real*4 global(nx_in,ny_in) |
PARAMETER ( ninety = 90. ) |
84 |
|
integer i, j, k, l, js, bi, bj, sp, interp_unit |
85 |
_BEGIN_MASTER( myThid ) |
_RS xG(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
86 |
|
_RS threeSixtyRS, NorthValue |
87 |
C check input arguments |
PARAMETER ( threeSixtyRS = 360. ) |
88 |
if ( .NOT. (filePrec .EQ. 32) ) |
|
89 |
& stop 'stop in exf_interp.F: value of filePrec not allowed' |
C put xG in interval [ lon_0 , lon_0+360 [ |
90 |
|
do bj=myByLo(myThid),myByHi(myThid) |
91 |
C read in input data |
do bi=myBxLo(myThid),myBxHi(myThid) |
92 |
#ifdef ALLOW_USE_MPI |
do j=1-OLy,sNy+OLy |
93 |
if (useSingleCPUIO) then |
do i=1-OLx,sNx+OLx |
94 |
|
xG(i,j,bi,bj) = xG_in(i,j,bi,bj)-lon_0 |
95 |
C master thread of process 0, only, opens a global file |
& + threeSixtyRS*2. |
96 |
IF( mpiMyId .EQ. 0 ) THEN |
xG(i,j,bi,bj) = lon_0+mod(xG(i,j,bi,bj),threeSixtyRS) |
|
call mdsfindunit( interp_unit, mythid) |
|
|
open(interp_unit,file=infile,status='old',access='direct', |
|
|
& recl=nx_in*ny_in*4) |
|
|
read(interp_unit,rec=irecord) |
|
|
& ((global(i,j),i=1,nx_in),j=1,ny_in) |
|
|
close(interp_unit) |
|
|
ENDIF |
|
|
|
|
|
C broadcast to all processes |
|
|
call MPI_BCAST(global,nx_in*ny_in,MPI_REAL, |
|
|
& 0,MPI_COMM_MODEL,ierr) |
|
|
do j=1,ny_in |
|
|
do i=1,nx_in |
|
|
arrayin(i,j)=global(i,j) |
|
97 |
enddo |
enddo |
98 |
enddo |
enddo |
99 |
|
enddo |
100 |
|
enddo |
101 |
|
|
102 |
|
call exf_interp_read( |
103 |
|
I infile, filePrec, |
104 |
|
O arrayin, |
105 |
|
I irecord, nx_in, ny_in, mythid) |
106 |
|
_BARRIER |
107 |
|
|
108 |
|
C _BEGIN_MASTER( myThid ) |
109 |
|
|
110 |
|
C setup input longitude grid |
111 |
|
do i=-1,nx_in+2 |
112 |
|
x_in(i) = lon_0 + (i-1)*lon_inc |
113 |
|
enddo |
114 |
|
|
115 |
|
C setup input latitude grid |
116 |
|
y_in(0) = lat_0 - lat_inc(1) |
117 |
|
y_in(-1)= lat_0 - 2.*lat_inc(1) |
118 |
|
y_in(1) = lat_0 |
119 |
|
do j=2,ny_in |
120 |
|
y_in(j) = y_in(j-1) + lat_inc(j-1) |
121 |
|
enddo |
122 |
|
do j=ny_in+1,ny_in+2 |
123 |
|
if (y_in(j-1).eq.ninety) then |
124 |
|
y_in(j) = 2 * ninety - y_in(j-2) |
125 |
else |
else |
126 |
#endif /* ALLOW_USE_MPI */ |
y_in(j) = min( y_in(j-1)+lat_inc(ny_in-1), ninety ) |
|
|
|
|
call mdsfindunit( interp_unit, mythid) |
|
|
open(interp_unit,file=infile,status='old',access='direct', |
|
|
& recl=nx_in*ny_in*4) |
|
|
read(interp_unit,rec=irecord) |
|
|
& ((arrayin(i,j),i=1,nx_in),j=1,ny_in) |
|
|
close(interp_unit) |
|
|
|
|
|
#ifdef ALLOW_USE_MPI |
|
127 |
endif |
endif |
128 |
#endif /* ALLOW_USE_MPI */ |
enddo |
|
|
|
|
#ifdef _BYTESWAPIO |
|
|
call MDS_BYTESWAPR4((nx_in+4)*(ny_in+4), arrayin ) |
|
|
#endif /* _BYTESWAPIO */ |
|
|
|
|
|
C setup input grid |
|
|
do i=-1,nx_in+2 |
|
|
x_in(i) = lon_0 + (i-1.)*lon_inc |
|
|
enddo |
|
|
y_in(0) = lat_0 - lat_inc(1) |
|
|
y_in(-1)= lat_0 - 2.*lat_inc(1) |
|
|
y_in(1) = lat_0 |
|
|
do j=2,ny_in |
|
|
y_in(j) = y_in(j-1) + lat_inc(j-1) |
|
|
enddo |
|
|
y_in(ny_in+1) = y_in(ny_in) + lat_inc(ny_in-1) |
|
|
y_in(ny_in+2) = y_in(ny_in) + 2.*lat_inc(ny_in-1) |
|
129 |
|
|
130 |
C enlarge boundary |
C enlarge boundary |
131 |
do j=1,ny_in |
do j=1,ny_in |
132 |
arrayin(0,j) = arrayin(nx_in,j) |
arrayin(0,j) = arrayin(nx_in,j) |
133 |
arrayin(-1,j) = arrayin(nx_in-1,j) |
arrayin(-1,j) = arrayin(nx_in-1,j) |
134 |
arrayin(nx_in+1,j) = arrayin(1,j) |
arrayin(nx_in+1,j) = arrayin(1,j) |
135 |
arrayin(nx_in+2,j) = arrayin(2,j) |
arrayin(nx_in+2,j) = arrayin(2,j) |
136 |
enddo |
enddo |
137 |
do i=-1,nx_in+2 |
do i=-1,nx_in+2 |
138 |
arrayin(i,0) = arrayin(i,1) |
arrayin(i,0) = arrayin(i,1) |
139 |
arrayin(i,-1) = arrayin(i,1) |
arrayin(i,-1) = arrayin(i,1) |
140 |
arrayin(i,ny_in+1) = arrayin(i,ny_in) |
arrayin(i,ny_in+1) = arrayin(i,ny_in) |
141 |
arrayin(i,ny_in+2) = arrayin(i,ny_in) |
arrayin(i,ny_in+2) = arrayin(i,ny_in) |
142 |
enddo |
enddo |
143 |
|
|
144 |
_END_MASTER( myThid ) |
C For tracer (method=1,2) set to northernmost zonal-mean value |
145 |
|
C at 90N to avoid sharp zonal gradients near the Pole. |
146 |
|
C For U (method=11,12) set to zero at 90N to minimize velocity |
147 |
|
C gradient at North Pole |
148 |
|
C For V (method=11,12) set to northernmost zonal value at 90N, |
149 |
|
C as is already done above in order to allow cross-PoleArctic flow |
150 |
|
do j=ny_in,ny_in+2 |
151 |
|
if (y_in(j).eq.ninety) then |
152 |
|
if (method.eq.1 .or. method.eq.2) then |
153 |
|
NorthValue = 0 |
154 |
|
do i=1,nx_in |
155 |
|
NorthValue = NorthValue + arrayin(i,j) |
156 |
|
enddo |
157 |
|
NorthValue = NorthValue / nx_in |
158 |
|
do i=-1,nx_in+2 |
159 |
|
arrayin(i,j) = NorthValue |
160 |
|
enddo |
161 |
|
elseif (method.eq.11 .or. method.eq.12) then |
162 |
|
do i=-1,nx_in+2 |
163 |
|
arrayin(i,j) = 0 |
164 |
|
enddo |
165 |
|
endif |
166 |
|
endif |
167 |
|
enddo |
168 |
|
|
169 |
|
C _END_MASTER( myThid ) |
170 |
|
|
171 |
do bj = mybylo(mythid), mybyhi(mythid) |
do bj = mybylo(mythid), mybyhi(mythid) |
172 |
do bi = mybxlo(mythid), mybxhi(mythid) |
do bi = mybxlo(mythid), mybxhi(mythid) |
173 |
|
|
174 |
C check validity of input/output coordinates |
C check validity of input/output coordinates |
175 |
if ( xG(1,1 ,bi,bj) .le. x_in(0) .or. |
#ifdef ALLOW_DEBUG |
176 |
& xG(snx,1,bi,bj) .ge. x_in(nx_in+1) .or. |
if ( debugLevel .ge. debLevB ) then |
177 |
& yG(1,1 ,bi,bj) .lt. y_in(1) .or. |
do i=1,snx |
178 |
& yG(1,sny,bi,bj) .gt. y_in(ny_in) ) then |
do j=1,sny |
179 |
print*,'ERROR in S/R EXF_INTERP:' |
if ( xG(i,j,bi,bj) .lt. x_in(0) .or. |
180 |
print*,' input grid must encompass output grid.' |
& xG(i,j,bi,bj) .ge. x_in(nx_in+1) .or. |
181 |
STOP ' ABNORMAL END: S/R EXF_INTERP' |
& yG(i,j,bi,bj) .lt. y_in(0) .or. |
182 |
|
& yG(i,j,bi,bj) .ge. y_in(ny_in+1) ) then |
183 |
|
print*,'ERROR in S/R EXF_INTERP:' |
184 |
|
print*,' input grid must encompass output grid.' |
185 |
|
print*,'i,j,bi,bj' ,i,j,bi,bj |
186 |
|
print*,'xG,yG' ,xG(i,j,bi,bj),yG(i,j,bi,bj) |
187 |
|
print*,'nx_in,ny_in' ,nx_in ,ny_in |
188 |
|
print*,'x_in(0,nx_in+1)',x_in(0) ,x_in(nx_in+1) |
189 |
|
print*,'y_in(0,ny_in+1)',y_in(0) ,y_in(ny_in+1) |
190 |
|
STOP ' ABNORMAL END: S/R EXF_INTERP' |
191 |
|
endif |
192 |
|
enddo |
193 |
|
enddo |
194 |
endif |
endif |
195 |
|
#endif /* ALLOW_DEBUG */ |
196 |
|
|
197 |
C compute interpolation indices |
C compute interpolation indices |
198 |
do i=1,snx |
do i=1,snx |
199 |
if (xG(i,1,bi,bj)-x_in(1) .ge. 0.) then |
do j=1,sny |
200 |
w_ind(i) = int((xG(i,1,bi,bj)-x_in(1))/lon_inc) + 1 |
if (xG(i,j,bi,bj)-x_in(1) .ge. 0.) then |
201 |
else |
w_ind(i,j) = int((xG(i,j,bi,bj)-x_in(1))/lon_inc) + 1 |
202 |
w_ind(i) = int((xG(i,1,bi,bj)-x_in(1))/lon_inc) |
else |
203 |
endif |
w_ind(i,j) = int((xG(i,j,bi,bj)-x_in(1))/lon_inc) |
204 |
e_ind(i) = w_ind(i) + 1 |
endif |
205 |
enddo |
e_ind(i,j) = w_ind(i,j) + 1 |
206 |
js = ny_in/2 |
js = ny_in*.5 |
207 |
do j=1,sny |
do while (yG(i,j,bi,bj) .lt. y_in(js)) |
208 |
do while (yG(1,j,bi,bj) .lt. y_in(js)) |
js = (js - 1)*.5 |
209 |
js = (js + 1)/2 |
enddo |
210 |
enddo |
do while (yG(i,j,bi,bj) .ge. y_in(js+1)) |
211 |
do while (yG(1,j,bi,bj) .ge. y_in(js+1)) |
js = js + 1 |
212 |
js = js + 1 |
enddo |
213 |
|
s_ind(i,j) = js |
214 |
|
n_ind(i,j) = js + 1 |
215 |
enddo |
enddo |
|
s_ind(j) = js |
|
|
n_ind(j) = js + 1 |
|
216 |
enddo |
enddo |
217 |
|
|
218 |
if (method .eq. 1) then |
if (method.eq.1 .or. method.eq.11 .or. method.eq.21) then |
219 |
|
|
220 |
C bilinear interpolation |
C bilinear interpolation |
221 |
sp = 2 |
sp = 2 |
223 |
do i=1,snx |
do i=1,snx |
224 |
arrayout(i,j,bi,bj) = 0. |
arrayout(i,j,bi,bj) = 0. |
225 |
do l=0,1 |
do l=0,1 |
226 |
px_ind(l+1) = x_in(w_ind(i)+l) |
px_ind(l+1) = x_in(w_ind(i,j)+l) |
227 |
py_ind(l+1) = y_in(s_ind(j)+l) |
py_ind(l+1) = y_in(s_ind(i,j)+l) |
228 |
enddo |
enddo |
229 |
do k=1,2 |
do k=1,2 |
230 |
ew_val(k) = arrayin(w_ind(i),s_ind(j)+k-1) |
ew_val(k) = arrayin(w_ind(i,j),s_ind(i,j)+k-1) |
231 |
& *lagran(1,xG(i,1,bi,bj),px_ind,sp) |
& *lagran(1,xG(i,j,bi,bj),px_ind,sp) |
232 |
& +arrayin(e_ind(i),s_ind(j)+k-1) |
& +arrayin(e_ind(i,j),s_ind(i,j)+k-1) |
233 |
& *lagran(2,xG(i,1,bi,bj),px_ind,sp) |
& *lagran(2,xG(i,j,bi,bj),px_ind,sp) |
234 |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
235 |
& +ew_val(k)*lagran(k,yG(1,j,bi,bj),py_ind,sp) |
& +ew_val(k)*lagran(k,yG(i,j,bi,bj),py_ind,sp) |
236 |
enddo |
enddo |
237 |
enddo |
enddo |
238 |
enddo |
enddo |
239 |
elseif (method .eq. 2) then |
elseif (method .eq. 2 .or. method.eq.12 .or. method.eq.22) then |
240 |
|
|
241 |
C bicubic interpolation |
C bicubic interpolation |
242 |
sp = 4 |
sp = 4 |
244 |
do i=1,snx |
do i=1,snx |
245 |
arrayout(i,j,bi,bj) = 0. |
arrayout(i,j,bi,bj) = 0. |
246 |
do l=-1,2 |
do l=-1,2 |
247 |
px_ind(l+2) = x_in(w_ind(i)+l) |
px_ind(l+2) = x_in(w_ind(i,j)+l) |
248 |
py_ind(l+2) = y_in(s_ind(j)+l) |
py_ind(l+2) = y_in(s_ind(i,j)+l) |
249 |
enddo |
enddo |
250 |
do k=1,4 |
do k=1,4 |
251 |
ew_val(k) = |
ew_val(k) = |
252 |
& arrayin(w_ind(i)-1,s_ind(j)+k-2) |
& arrayin(w_ind(i,j)-1,s_ind(i,j)+k-2) |
253 |
& *lagran(1,xG(i,1,bi,bj),px_ind,sp) |
& *lagran(1,xG(i,j,bi,bj),px_ind,sp) |
254 |
& +arrayin(w_ind(i) ,s_ind(j)+k-2) |
& +arrayin(w_ind(i,j) ,s_ind(i,j)+k-2) |
255 |
& *lagran(2,xG(i,1,bi,bj),px_ind,sp) |
& *lagran(2,xG(i,j,bi,bj),px_ind,sp) |
256 |
& +arrayin(e_ind(i) ,s_ind(j)+k-2) |
& +arrayin(e_ind(i,j) ,s_ind(i,j)+k-2) |
257 |
& *lagran(3,xG(i,1,bi,bj),px_ind,sp) |
& *lagran(3,xG(i,j,bi,bj),px_ind,sp) |
258 |
& +arrayin(e_ind(i)+1,s_ind(j)+k-2) |
& +arrayin(e_ind(i,j)+1,s_ind(i,j)+k-2) |
259 |
& *lagran(4,xG(i,1,bi,bj),px_ind,sp) |
& *lagran(4,xG(i,j,bi,bj),px_ind,sp) |
260 |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
arrayout(i,j,bi,bj)=arrayout(i,j,bi,bj) |
261 |
& +ew_val(k)*lagran(k,yG(1,j,bi,bj),py_ind,sp) |
& +ew_val(k)*lagran(k,yG(i,j,bi,bj),py_ind,sp) |
262 |
enddo |
enddo |
263 |
enddo |
enddo |
264 |
enddo |
enddo |