| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/exf/exf_set_uv.F,v 1.20 2009/02/19 09:24:07 mlosch Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "EXF_OPTIONS.h" |
| 5 |
|
| 6 |
subroutine exf_set_uv( |
| 7 |
& uvecfile, uvecstartdate, uvecperiod, |
| 8 |
& exf_inscal_uvec, uvec, uvec0, uvec1, uvecmask, |
| 9 |
& uvec_lon0, uvec_lon_inc, uvec_lat0, uvec_lat_inc, |
| 10 |
& uvec_nlon, uvec_nlat, |
| 11 |
& uvec_remove_intercept, uvec_remove_slope, |
| 12 |
& vvecfile, vvecstartdate, vvecperiod, |
| 13 |
& exf_inscal_vvec, vvec, vvec0, vvec1, vvecmask, |
| 14 |
& vvec_lon0, vvec_lon_inc, vvec_lat0, vvec_lat_inc, |
| 15 |
& vvec_nlon, vvec_nlat, |
| 16 |
& vvec_remove_intercept, vvec_remove_slope, |
| 17 |
& mycurrenttime, mycurrentiter, mythid ) |
| 18 |
|
| 19 |
c ================================================================== |
| 20 |
c SUBROUTINE exf_set_uv |
| 21 |
c ================================================================== |
| 22 |
c |
| 23 |
c o Read-in, interpolate, and rotate wind or wind stress vectors |
| 24 |
c from a spherical-polar input grid to an arbitrary output grid. |
| 25 |
c |
| 26 |
c menemenlis@jpl.nasa.gov, 8-Dec-2003 |
| 27 |
c |
| 28 |
c ================================================================== |
| 29 |
c SUBROUTINE exf_set_uv |
| 30 |
c ================================================================== |
| 31 |
|
| 32 |
implicit none |
| 33 |
|
| 34 |
c == global variables == |
| 35 |
|
| 36 |
#include "EEPARAMS.h" |
| 37 |
#include "SIZE.h" |
| 38 |
#include "PARAMS.h" |
| 39 |
#include "DYNVARS.h" |
| 40 |
#include "GRID.h" |
| 41 |
|
| 42 |
#include "EXF_PARAM.h" |
| 43 |
#include "EXF_FIELDS.h" |
| 44 |
#include "EXF_CONSTANTS.h" |
| 45 |
|
| 46 |
#ifdef ALLOW_AUTODIFF |
| 47 |
# include "ctrl.h" |
| 48 |
# include "ctrl_dummy.h" |
| 49 |
#endif |
| 50 |
|
| 51 |
c == routine arguments == |
| 52 |
|
| 53 |
c *vec_lon_0, :: longitude and latitude of SouthWest |
| 54 |
c *vec_lat_0 corner of global input grid for *vec |
| 55 |
c *vec_nlon, *vec_nlat :: input x-grid and y-grid size for *vec |
| 56 |
c *vec_lon_inc :: scalar x-grid increment for *vec |
| 57 |
c *vec_lat_inc :: vector y-grid increments for *vec |
| 58 |
|
| 59 |
character*(128) uvecfile, uvecfile0, uvecfile1 |
| 60 |
_RL uvecstartdate, uvecperiod |
| 61 |
_RL exf_inscal_uvec |
| 62 |
_RL uvec_remove_intercept, uvec_remove_slope |
| 63 |
_RL uvec (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 64 |
_RL uvec0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 65 |
_RL uvec1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 66 |
character*1 uvecmask |
| 67 |
_RL uvec_lon0, uvec_lon_inc |
| 68 |
_RL uvec_lat0, uvec_lat_inc(MAX_LAT_INC) |
| 69 |
INTEGER uvec_nlon, uvec_nlat |
| 70 |
character*(128) vvecfile, vvecfile0, vvecfile1 |
| 71 |
_RL vvecstartdate, vvecperiod |
| 72 |
_RL exf_inscal_vvec |
| 73 |
_RL vvec_remove_intercept, vvec_remove_slope |
| 74 |
_RL vvec (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 75 |
_RL vvec0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 76 |
_RL vvec1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 77 |
character*1 vvecmask |
| 78 |
_RL vvec_lon0, vvec_lon_inc |
| 79 |
_RL vvec_lat0, vvec_lat_inc(MAX_LAT_INC) |
| 80 |
INTEGER vvec_nlon, vvec_nlat |
| 81 |
_RL mycurrenttime |
| 82 |
integer mycurrentiter |
| 83 |
integer mythid |
| 84 |
|
| 85 |
#ifdef USE_EXF_INTERPOLATION |
| 86 |
c == local variables == |
| 87 |
|
| 88 |
logical first, changed |
| 89 |
_RL fac, x1, x2, x3, x4, y1, y2, y3, y4, dx, dy |
| 90 |
_RL tmp_u (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 91 |
_RL tmp_v (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
| 92 |
integer count0, count1 |
| 93 |
integer i, j, bi, bj |
| 94 |
integer il, interp_method |
| 95 |
integer year0, year1 |
| 96 |
|
| 97 |
c == external == |
| 98 |
|
| 99 |
integer ilnblnk |
| 100 |
external ilnblnk |
| 101 |
|
| 102 |
c == end of interface == |
| 103 |
|
| 104 |
IF ( usingCurvilinearGrid .OR. rotateGrid ) THEN |
| 105 |
|
| 106 |
if ( uvecfile .NE. ' ' .and. vvecfile .NE. ' ' ) then |
| 107 |
|
| 108 |
c get record numbers and interpolation factor |
| 109 |
call exf_GetFFieldRec( |
| 110 |
I uvecstartdate, uvecperiod |
| 111 |
I , useExfYearlyFields |
| 112 |
O , fac, first, changed |
| 113 |
O , count0, count1, year0, year1 |
| 114 |
I , mycurrenttime, mycurrentiter, mythid |
| 115 |
& ) |
| 116 |
|
| 117 |
if ( first ) then |
| 118 |
|
| 119 |
call exf_GetYearlyFieldName( |
| 120 |
I useExfYearlyFields, twoDigitYear, uvecperiod, year0, |
| 121 |
I uvecfile, |
| 122 |
O uvecfile0, |
| 123 |
I mycurrenttime, mycurrentiter, mythid ) |
| 124 |
call exf_GetYearlyFieldName( |
| 125 |
I useExfYearlyFields, twoDigitYear, vvecperiod, year0, |
| 126 |
I vvecfile, |
| 127 |
O vvecfile0, |
| 128 |
I mycurrenttime, mycurrentiter, mythid ) |
| 129 |
|
| 130 |
c scalar interpolation to (xC,yC) locations |
| 131 |
interp_method=12 |
| 132 |
call exf_interp( uvecfile0, exf_iprec |
| 133 |
& , tmp_u, count0, xC, yC |
| 134 |
& , uvec_lon0,uvec_lon_inc |
| 135 |
& , uvec_lat0,uvec_lat_inc |
| 136 |
& , uvec_nlon,uvec_nlat,interp_method,mythid |
| 137 |
& ) |
| 138 |
interp_method=22 |
| 139 |
call exf_interp( vvecfile0, exf_iprec |
| 140 |
& , tmp_v, count0, xC, yC |
| 141 |
& , vvec_lon0,vvec_lon_inc |
| 142 |
& , vvec_lat0,vvec_lat_inc |
| 143 |
& , vvec_nlon,vvec_nlat,interp_method,mythid |
| 144 |
& ) |
| 145 |
c vector rotation |
| 146 |
do bj = mybylo(mythid),mybyhi(mythid) |
| 147 |
do bi = mybxlo(mythid),mybxhi(mythid) |
| 148 |
do j = 1,sny |
| 149 |
do i = 1,snx |
| 150 |
x1=xG(i,j,bi,bj) |
| 151 |
x2=xG(i+1,j,bi,bj) |
| 152 |
x3=xG(i,j+1,bi,bj) |
| 153 |
x4=xG(i+1,j+1,bi,bj) |
| 154 |
if ((x2-x1).gt.180) x2=x2-360 |
| 155 |
if ((x1-x2).gt.180) x2=x2+360 |
| 156 |
if ((x3-x1).gt.180) x3=x3-360 |
| 157 |
if ((x1-x3).gt.180) x3=x3+360 |
| 158 |
if ((x4-x1).gt.180) x4=x4-360 |
| 159 |
if ((x1-x4).gt.180) x4=x4+360 |
| 160 |
y1=yG(i,j,bi,bj) |
| 161 |
y2=yG(i+1,j,bi,bj) |
| 162 |
y3=yG(i,j+1,bi,bj) |
| 163 |
y4=yG(i+1,j+1,bi,bj) |
| 164 |
dx=0.5*(x3+x4-x1-x2) |
| 165 |
dx=dx* |
| 166 |
& cos(deg2rad*yC(i,j,bi,bj)) |
| 167 |
dy=0.5*(y3+y4-y1-y2) |
| 168 |
vvec1(i,j,bi,bj)= |
| 169 |
& (tmp_u(i,j,bi,bj)*dx+ |
| 170 |
& tmp_v(i,j,bi,bj)*dy)/ |
| 171 |
& sqrt(dx*dx+dy*dy) |
| 172 |
dx=0.5*(x2+x4-x1-x3) |
| 173 |
dx=dx* |
| 174 |
& cos(deg2rad*yC(i,j,bi,bj)) |
| 175 |
dy=0.5*(y2+y4-y1-y3) |
| 176 |
uvec1(i,j,bi,bj)= |
| 177 |
& (tmp_u(i,j,bi,bj)*dx+ |
| 178 |
& tmp_v(i,j,bi,bj)*dy)/ |
| 179 |
& sqrt(dx*dx+dy*dy) |
| 180 |
enddo |
| 181 |
enddo |
| 182 |
enddo |
| 183 |
enddo |
| 184 |
c apply mask |
| 185 |
if (exf_yftype .eq. 'RL') then |
| 186 |
call exf_filter_rl( uvec1, uvecmask, mythid ) |
| 187 |
call exf_filter_rl( vvec1, vvecmask, mythid ) |
| 188 |
else |
| 189 |
c call exf_filter_rs( uvec1, uvecmask, mythid ) |
| 190 |
c call exf_filter_rs( vvec1, vvecmask, mythid ) |
| 191 |
STOP 'S/R EXF_SET_UV: invalid exf_yftype' |
| 192 |
end if |
| 193 |
endif |
| 194 |
|
| 195 |
if (( first ) .or. ( changed )) then |
| 196 |
call exf_SwapFFields( uvec0, uvec1, mythid ) |
| 197 |
call exf_SwapFFields( vvec0, vvec1, mythid ) |
| 198 |
|
| 199 |
call exf_GetYearlyFieldName( |
| 200 |
I useExfYearlyFields, twoDigitYear, uvecperiod, year1, |
| 201 |
I uvecfile, |
| 202 |
O uvecfile1, |
| 203 |
I mycurrenttime, mycurrentiter, mythid ) |
| 204 |
call exf_GetYearlyFieldName( |
| 205 |
I useExfYearlyFields, twoDigitYear, vvecperiod, year1, |
| 206 |
I vvecfile, |
| 207 |
O vvecfile1, |
| 208 |
I mycurrenttime, mycurrentiter, mythid ) |
| 209 |
|
| 210 |
c scalar interpolation to (xC,yC) locations |
| 211 |
interp_method=12 |
| 212 |
call exf_interp( uvecfile1, exf_iprec |
| 213 |
& , tmp_u, count1, xC, yC |
| 214 |
& , uvec_lon0,uvec_lon_inc |
| 215 |
& , uvec_lat0,uvec_lat_inc |
| 216 |
& , uvec_nlon,uvec_nlat,interp_method,mythid |
| 217 |
& ) |
| 218 |
interp_method=22 |
| 219 |
call exf_interp( vvecfile1, exf_iprec |
| 220 |
& , tmp_v, count1, xC, yC |
| 221 |
& , vvec_lon0,vvec_lon_inc |
| 222 |
& , vvec_lat0,vvec_lat_inc |
| 223 |
& , vvec_nlon,vvec_nlat,interp_method,mythid |
| 224 |
& ) |
| 225 |
c vector rotation |
| 226 |
do bj = mybylo(mythid),mybyhi(mythid) |
| 227 |
do bi = mybxlo(mythid),mybxhi(mythid) |
| 228 |
do j = 1,sny |
| 229 |
do i = 1,snx |
| 230 |
x1=xG(i,j,bi,bj) |
| 231 |
x2=xG(i+1,j,bi,bj) |
| 232 |
x3=xG(i,j+1,bi,bj) |
| 233 |
x4=xG(i+1,j+1,bi,bj) |
| 234 |
if ((x2-x1).gt.180) x2=x2-360 |
| 235 |
if ((x1-x2).gt.180) x2=x2+360 |
| 236 |
if ((x3-x1).gt.180) x3=x3-360 |
| 237 |
if ((x1-x3).gt.180) x3=x3+360 |
| 238 |
if ((x4-x1).gt.180) x4=x4-360 |
| 239 |
if ((x1-x4).gt.180) x4=x4+360 |
| 240 |
y1=yG(i,j,bi,bj) |
| 241 |
y2=yG(i+1,j,bi,bj) |
| 242 |
y3=yG(i,j+1,bi,bj) |
| 243 |
y4=yG(i+1,j+1,bi,bj) |
| 244 |
dx=0.5*(x3+x4-x1-x2) |
| 245 |
dx=dx* |
| 246 |
& cos(deg2rad*yC(i,j,bi,bj)) |
| 247 |
dy=0.5*(y3+y4-y1-y2) |
| 248 |
vvec1(i,j,bi,bj)= |
| 249 |
& (tmp_u(i,j,bi,bj)*dx+ |
| 250 |
& tmp_v(i,j,bi,bj)*dy)/ |
| 251 |
& sqrt(dx*dx+dy*dy) |
| 252 |
dx=0.5*(x2+x4-x1-x3) |
| 253 |
dx=dx* |
| 254 |
& cos(deg2rad*yC(i,j,bi,bj)) |
| 255 |
dy=0.5*(y2+y4-y1-y3) |
| 256 |
uvec1(i,j,bi,bj)= |
| 257 |
& (tmp_u(i,j,bi,bj)*dx+ |
| 258 |
& tmp_v(i,j,bi,bj)*dy)/ |
| 259 |
& sqrt(dx*dx+dy*dy) |
| 260 |
enddo |
| 261 |
enddo |
| 262 |
enddo |
| 263 |
enddo |
| 264 |
c apply mask |
| 265 |
if (exf_yftype .eq. 'RL') then |
| 266 |
call exf_filter_rl( uvec1, uvecmask, mythid ) |
| 267 |
call exf_filter_rl( vvec1, vvecmask, mythid ) |
| 268 |
else |
| 269 |
c call exf_filter_rs( uvec1, uvecmask, mythid ) |
| 270 |
c call exf_filter_rs( vvec1, vvecmask, mythid ) |
| 271 |
STOP 'S/R EXF_SET_UV: invalid exf_yftype' |
| 272 |
end if |
| 273 |
endif |
| 274 |
|
| 275 |
c Interpolate linearly onto the current time. |
| 276 |
do bj = mybylo(mythid),mybyhi(mythid) |
| 277 |
do bi = mybxlo(mythid),mybxhi(mythid) |
| 278 |
do j = 1,sny |
| 279 |
do i = 1,snx |
| 280 |
uvec(i,j,bi,bj) = exf_inscal_uvec * ( |
| 281 |
& fac * uvec0(i,j,bi,bj) + |
| 282 |
& (exf_one - fac) * uvec1(i,j,bi,bj) ) |
| 283 |
vvec(i,j,bi,bj) = exf_inscal_vvec * ( |
| 284 |
& fac * vvec0(i,j,bi,bj) + |
| 285 |
& (exf_one - fac) * vvec1(i,j,bi,bj) ) |
| 286 |
enddo |
| 287 |
enddo |
| 288 |
enddo |
| 289 |
enddo |
| 290 |
|
| 291 |
endif |
| 292 |
|
| 293 |
ELSE |
| 294 |
c IF ( .NOT. ( usingCurvilinearGrid .OR rotateGrid ) ) |
| 295 |
|
| 296 |
interp_method=12 |
| 297 |
call exf_set_gen( |
| 298 |
& uvecfile, uvecstartdate, uvecperiod, |
| 299 |
& exf_inscal_uvec, |
| 300 |
& uvec_remove_intercept, uvec_remove_slope, |
| 301 |
& uvec, uvec0, uvec1, uvecmask, |
| 302 |
& uvec_lon0, uvec_lon_inc, uvec_lat0, uvec_lat_inc, |
| 303 |
& uvec_nlon, uvec_nlat, xC, yC, interp_method, |
| 304 |
& mycurrenttime, mycurrentiter, mythid ) |
| 305 |
interp_method=22 |
| 306 |
call exf_set_gen( |
| 307 |
& vvecfile, vvecstartdate, vvecperiod, |
| 308 |
& exf_inscal_vvec, |
| 309 |
& vvec_remove_intercept, vvec_remove_slope, |
| 310 |
& vvec, vvec0, vvec1, vvecmask, |
| 311 |
& vvec_lon0, vvec_lon_inc, vvec_lat0, vvec_lat_inc, |
| 312 |
& vvec_nlon, vvec_nlat, xC, yC, interp_method, |
| 313 |
& mycurrenttime, mycurrentiter, mythid ) |
| 314 |
|
| 315 |
ENDIF |
| 316 |
|
| 317 |
#endif /* USE_EXF_INTERPOLATION */ |
| 318 |
|
| 319 |
return |
| 320 |
end |
Parent Directory
| 
Revision Log
| 
Revision Graph