| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/cheapaml/cheapaml_fields_load.F,v 1.3 2008/09/09 19:05:20 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
#include "CHEAPAML_OPTIONS.h" |
| 4 |
|
| 5 |
C !ROUTINE: CHEAPAML_FIELDS_LOAD |
| 6 |
C !INTERFACE: |
| 7 |
SUBROUTINE CHEAPAML_FIELDS_LOAD( myTime, myIter, myThid ) |
| 8 |
C *==========================================================* |
| 9 |
C | SUBROUTINE CHEAPAML_FIELDS_LOAD |
| 10 |
C | o Control reading of fields from external source. |
| 11 |
C *==========================================================* |
| 12 |
|
| 13 |
C !USES: |
| 14 |
IMPLICIT NONE |
| 15 |
C === Global variables === |
| 16 |
#include "SIZE.h" |
| 17 |
#include "EEPARAMS.h" |
| 18 |
#include "PARAMS.h" |
| 19 |
#include "FFIELDS.h" |
| 20 |
c #include "GRID.h" |
| 21 |
c #include "DYNVARS.h" |
| 22 |
C #include "BULKF.h" |
| 23 |
#ifdef ALLOW_THSICE |
| 24 |
#include "THSICE_VARS.h" |
| 25 |
#endif |
| 26 |
#include "CHEAPAML.h" |
| 27 |
|
| 28 |
C !INPUT/OUTPUT PARAMETERS: |
| 29 |
C === Routine arguments === |
| 30 |
C myThid - Thread no. that called this routine. |
| 31 |
C myTime - Simulation time |
| 32 |
C myIter - Simulation timestep number |
| 33 |
C dsolms - Solar variation at Southern boundary |
| 34 |
C dsolmn - Solar variation at Northern boundary |
| 35 |
c xphaseinit - user input initial phase of year relative |
| 36 |
c to mid winter. E.G. xphaseinit = pi implies time zero |
| 37 |
c is mid summer. |
| 38 |
INTEGER myThid |
| 39 |
_RL myTime |
| 40 |
_RL local ,bump |
| 41 |
c _RL dsolms,dsolmn |
| 42 |
c _RL xphaseinit |
| 43 |
INTEGER myIter |
| 44 |
INTEGER jg |
| 45 |
|
| 46 |
C !LOCAL VARIABLES: |
| 47 |
C === Local arrays === |
| 48 |
C trair[01] :: Relaxation temp. profile for air temperature |
| 49 |
C qrair[01] :: Relaxation specific humidity profile for air |
| 50 |
C solar[01] :: short wave flux |
| 51 |
C uwind[01] :: zonal wind |
| 52 |
C vwind[01] :: meridional wind |
| 53 |
|
| 54 |
C aWght, bWght :: Interpolation weights |
| 55 |
COMMON /BULKFFIELDS/ |
| 56 |
& trair0, |
| 57 |
& trair1, |
| 58 |
& qrair0, |
| 59 |
& qrair1 |
| 60 |
|
| 61 |
_RS trair0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 62 |
_RS trair1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 63 |
_RS qrair0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 64 |
_RS qrair1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 65 |
_RS Solar0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 66 |
_RS Solar1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 67 |
_RS uwind0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 68 |
_RS uwind1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 69 |
_RS vwind0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 70 |
_RS vwind1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 71 |
|
| 72 |
INTEGER bi,bj,i,j,intime0,intime1 |
| 73 |
_RL aWght,bWght,rdt |
| 74 |
_RL ssq0,ssq1,ssq2,lath,p0,ssqa,q |
| 75 |
c xsolph - phase of year, assuming time zero is mid winter |
| 76 |
c xinxx - cos ( xsolph ) |
| 77 |
_RL xsolph,xinxx |
| 78 |
INTEGER nForcingPeriods,Imytm,Ifprd,Ifcyc,Iftm |
| 79 |
c coefficients used to compute saturation specific humidity |
| 80 |
DATA ssq0, ssq1, ssq2 |
| 81 |
& / 3.797915 _d 0 , 7.93252 _d -6 , 2.166847 _d -3 / |
| 82 |
|
| 83 |
c latent heat (J/kg) |
| 84 |
lath=2.5d6 |
| 85 |
c sea level pressure |
| 86 |
p0=1000.d0 |
| 87 |
|
| 88 |
IF ( periodicExternalForcing ) THEN |
| 89 |
|
| 90 |
write(*,*) 'TEST 1 =========================' |
| 91 |
|
| 92 |
c the objective here is to give cheapaml a default periodic forcing |
| 93 |
c consisting only of annually varying solar forcing, and thus Trelaxation |
| 94 |
c variation. everything else, relative humidity, wind, are fixed. This |
| 95 |
c keys off of solardata. if a solar data file exists, the model will |
| 96 |
c assume there are files to be read and interpolated between, as is standard |
| 97 |
c for the MITGCM. |
| 98 |
|
| 99 |
IF ( SolarFile .EQ. ' ' ) THEN |
| 100 |
if ( myIter .EQ. nIter0 )then |
| 101 |
WRITE(*,*) |
| 102 |
& 'S/R Assuming Standard Annually Varying Solar Forcing' |
| 103 |
endif |
| 104 |
xsolph=myTime*2.d0*3.14159 _d 0/365. _d 0/86400. _d 0 |
| 105 |
xinxx=cos(xsolph+xphaseinit+3.14159 _d 0) |
| 106 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 107 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 108 |
DO j=1,sNy |
| 109 |
DO i=1,sNx |
| 110 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 111 |
local=225.d0+dsolms*xinxx-float((jg-1))/float((ny-1))* |
| 112 |
& (37.5d0-dsolmn*xinxx) |
| 113 |
if ( jG .le. 3 ) local = local + 200 |
| 114 |
Solar(i,j,bi,bj) = local |
| 115 |
ENDDO |
| 116 |
ENDDO |
| 117 |
ENDDO |
| 118 |
ENDDO |
| 119 |
_EXCH_XY_RS(solar, mythid) |
| 120 |
c relaxation temperature in radiative equilibrium |
| 121 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 122 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 123 |
DO j=1,sNy |
| 124 |
DO i=1,sNx |
| 125 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 126 |
local=solar(i,j,bi,bj) |
| 127 |
local=(2.d0*local/stefan)**(0.25d0)-273.16 |
| 128 |
bump=-5.d0*EXP(-(float(jg-127)*float(jg-127))/1920.0) |
| 129 |
local=local+bump |
| 130 |
TR(i,j,bi,bj) = local |
| 131 |
ENDDO |
| 132 |
ENDDO |
| 133 |
ENDDO |
| 134 |
ENDDO |
| 135 |
_EXCH_XY_RS(TR, mythid) |
| 136 |
c default specific humidity profile to 80% relative humidity |
| 137 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 138 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 139 |
DO j=1,sNy |
| 140 |
DO i=1,sNx |
| 141 |
c jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 142 |
local = Tr(i,j,bi,bj)+273.16d0 |
| 143 |
ssqa = ssq0*exp( lath*(ssq1-ssq2/local)) / p0 |
| 144 |
qr(i,j,bi,bj) = 0.8d0*ssqa |
| 145 |
ENDDO |
| 146 |
ENDDO |
| 147 |
ENDDO |
| 148 |
ENDDO |
| 149 |
_EXCH_XY_RS(qr, mythid) |
| 150 |
c u wind field |
| 151 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 152 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 153 |
DO j=1,sNy |
| 154 |
DO i=1,sNx |
| 155 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 156 |
local=-5.d0*cos(2.d0*pi*float(jg-1)/(float(ny-1))) |
| 157 |
uwind(i,j,bi,bj) = local |
| 158 |
ENDDO |
| 159 |
ENDDO |
| 160 |
ENDDO |
| 161 |
ENDDO |
| 162 |
_EXCH_XY_RS(uwind, mythid) |
| 163 |
c v wind field |
| 164 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 165 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 166 |
DO j=1,sNy |
| 167 |
DO i=1,sNx |
| 168 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 169 |
vwind(i,j,bi,bj) = 0.d0 |
| 170 |
ENDDO |
| 171 |
ENDDO |
| 172 |
ENDDO |
| 173 |
ENDDO |
| 174 |
_EXCH_XY_RS(vwind, mythid) |
| 175 |
ELSE |
| 176 |
|
| 177 |
c here for usual interpolative forcings |
| 178 |
C First call requires that we initialize everything to zero for safety |
| 179 |
IF ( myIter .EQ. nIter0 ) THEN |
| 180 |
CALL LEF_ZERO( trair0 ,myThid ) |
| 181 |
CALL LEF_ZERO( trair1 ,myThid ) |
| 182 |
CALL LEF_ZERO( qrair0 ,myThid ) |
| 183 |
CALL LEF_ZERO( qrair1 ,myThid ) |
| 184 |
CALL LEF_ZERO( solar0 ,myThid ) |
| 185 |
CALL LEF_ZERO( solar1 ,myThid ) |
| 186 |
CALL LEF_ZERO( uwind0 ,myThid ) |
| 187 |
CALL LEF_ZERO( uwind1 ,myThid ) |
| 188 |
CALL LEF_ZERO( vwind0 ,myThid ) |
| 189 |
CALL LEF_ZERO( vwind1 ,myThid ) |
| 190 |
_BARRIER |
| 191 |
ENDIF |
| 192 |
|
| 193 |
C Now calculate whether it is time to update the forcing arrays |
| 194 |
rdt=1. _d 0 / deltaTclock |
| 195 |
nForcingPeriods= |
| 196 |
& int(externForcingCycle/externForcingPeriod+0.5) |
| 197 |
Imytm=int(myTime*rdt+0.5) |
| 198 |
Ifprd=int(externForcingPeriod*rdt+0.5) |
| 199 |
Ifcyc=int(externForcingCycle*rdt+0.5) |
| 200 |
Iftm=mod( Imytm+Ifcyc-Ifprd/2 ,Ifcyc) |
| 201 |
|
| 202 |
intime0=int(Iftm/Ifprd) |
| 203 |
intime1=mod(intime0+1,nForcingPeriods) |
| 204 |
c aWght=float( Iftm-Ifprd*intime0 )/float( Ifprd ) |
| 205 |
aWght=dfloat( Iftm-Ifprd*intime0 )/dfloat( Ifprd ) |
| 206 |
bWght=1.-aWght |
| 207 |
|
| 208 |
intime0=intime0+1 |
| 209 |
intime1=intime1+1 |
| 210 |
|
| 211 |
IF ( |
| 212 |
& Iftm-Ifprd*(intime0-1) .EQ. 0 |
| 213 |
& .OR. myIter .EQ. nIter0 |
| 214 |
& ) THEN |
| 215 |
|
| 216 |
C If the above condition is met then we need to read in |
| 217 |
C data for the period ahead and the period behind myTime. |
| 218 |
WRITE(*,*) |
| 219 |
& 'S/R CHEAPAML_FIELDS_LOAD' |
| 220 |
IF ( SolarFile .NE. ' ' ) THEN |
| 221 |
CALL READ_REC_XY_RS( SolarFile,solar0,intime0, |
| 222 |
& myIter,myThid ) |
| 223 |
CALL READ_REC_XY_RS( SolarFile,solar1,intime1, |
| 224 |
& myIter,myThid ) |
| 225 |
ENDIF |
| 226 |
IF ( TrFile .NE. ' ' ) THEN |
| 227 |
CALL READ_REC_XY_RS( TRFile,trair0,intime0, |
| 228 |
& myIter,myThid ) |
| 229 |
CALL READ_REC_XY_RS( TRFile,trair1,intime1, |
| 230 |
& myIter,myThid ) |
| 231 |
ENDIF |
| 232 |
IF ( QrFile .NE. ' ' ) THEN |
| 233 |
CALL READ_REC_XY_RS( QrFile,qrair0,intime0, |
| 234 |
& myIter,myThid ) |
| 235 |
CALL READ_REC_XY_RS( QrFile,qrair1,intime1, |
| 236 |
& myIter,myThid ) |
| 237 |
ENDIF |
| 238 |
IF ( UWindFile .NE. ' ' ) THEN |
| 239 |
CALL READ_REC_XY_RS( UWindFile,uwind0,intime0, |
| 240 |
& myIter,myThid ) |
| 241 |
CALL READ_REC_XY_RS( UWindFile,uwind1,intime1, |
| 242 |
& myIter,myThid ) |
| 243 |
ENDIF |
| 244 |
IF ( VWindFile .NE. ' ' ) THEN |
| 245 |
CALL READ_REC_XY_RS( VWindFile,vwind0,intime0, |
| 246 |
& myIter,myThid ) |
| 247 |
CALL READ_REC_XY_RS( VWindFile,vwind1,intime1, |
| 248 |
& myIter,myThid ) |
| 249 |
ENDIF |
| 250 |
|
| 251 |
_EXCH_XY_RS(trair0 , myThid ) |
| 252 |
_EXCH_XY_RS(qrair0 , myThid ) |
| 253 |
_EXCH_XY_RS(solar0 , myThid ) |
| 254 |
_EXCH_XY_RS(uwind0 , myThid ) |
| 255 |
_EXCH_XY_RS(vwind0 , myThid ) |
| 256 |
_EXCH_XY_RS(trair1 , myThid ) |
| 257 |
_EXCH_XY_RS(qrair1 , myThid ) |
| 258 |
_EXCH_XY_RS(solar1 , myThid ) |
| 259 |
_EXCH_XY_RS(uwind1 , myThid ) |
| 260 |
_EXCH_XY_RS(vwind1 , myThid ) |
| 261 |
C |
| 262 |
ENDIF |
| 263 |
|
| 264 |
C-- Interpolate TR, QR, SOLAR |
| 265 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 266 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 267 |
DO j=1-Oly,sNy+Oly |
| 268 |
DO i=1-Olx,sNx+Olx |
| 269 |
TR(i,j,bi,bj) = bWght*trair0(i,j,bi,bj) |
| 270 |
& +aWght*trair1(i,j,bi,bj) !+273.15 |
| 271 |
qr(i,j,bi,bj) = bWght*qrair0(i,j,bi,bj) |
| 272 |
& +aWght*qrair1(i,j,bi,bj) |
| 273 |
uwind(i,j,bi,bj) = bWght*uwind0(i,j,bi,bj) |
| 274 |
& +aWght*uwind1(i,j,bi,bj) |
| 275 |
vwind(i,j,bi,bj) = bWght*vwind0(i,j,bi,bj) |
| 276 |
& +aWght*vwind1(i,j,bi,bj) |
| 277 |
solar(i,j,bi,bj) = bWght*solar0(i,j,bi,bj) |
| 278 |
& +aWght*solar1(i,j,bi,bj) |
| 279 |
ENDDO |
| 280 |
ENDDO |
| 281 |
ENDDO |
| 282 |
ENDDO |
| 283 |
ENDIF |
| 284 |
c end of periodic forcing options, on to steady option |
| 285 |
|
| 286 |
ELSE |
| 287 |
IF ( myIter .EQ. nIter0 ) THEN |
| 288 |
IF ( SolarFile .NE. ' ' ) THEN |
| 289 |
CALL READ_FLD_XY_RS( SolarFile,solar,' ',0,myThid ) |
| 290 |
ELSE |
| 291 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 292 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 293 |
DO j=1,sNy |
| 294 |
DO i=1,sNx |
| 295 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 296 |
local=225.d0-float((jg-1))/float((ny-1))*37.5d0 |
| 297 |
IF ( jG .le. 3 ) local =local + 200 |
| 298 |
Solar(i,j,bi,bj) = local |
| 299 |
ENDDO |
| 300 |
ENDDO |
| 301 |
ENDDO |
| 302 |
ENDDO |
| 303 |
ENDIF |
| 304 |
_EXCH_XY_RS(solar, mythid) |
| 305 |
IF ( TrFile .NE. ' ' ) THEN |
| 306 |
CALL READ_FLD_XY_RS( TrFile,tr,' ',0,myThid ) |
| 307 |
ELSE |
| 308 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 309 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 310 |
DO j=1,sNy |
| 311 |
DO i=1,sNx |
| 312 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 313 |
local=solar(i,j,bi,bj) |
| 314 |
local=(2.d0*local/stefan)**(0.25d0)-273.16 |
| 315 |
bump=-5.d0*EXP(-(float(jg-127)*float(jg-127))/1920.0) |
| 316 |
local=local+bump |
| 317 |
TR(i,j,bi,bj) = local |
| 318 |
ENDDO |
| 319 |
ENDDO |
| 320 |
ENDDO |
| 321 |
ENDDO |
| 322 |
ENDIF |
| 323 |
_EXCH_XY_RS(TR, mythid) |
| 324 |
c do specific humidity |
| 325 |
IF ( QrFile .NE. ' ' ) THEN |
| 326 |
CALL READ_FLD_XY_RS( QrFile,qr,' ',0,myThid ) |
| 327 |
ELSE |
| 328 |
c default specific humidity profile to 80% relative humidity |
| 329 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 330 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 331 |
DO j=1,sNy |
| 332 |
DO i=1,sNx |
| 333 |
c jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 334 |
local = Tr(i,j,bi,bj)+273.16d0 |
| 335 |
ssqa = ssq0*exp( lath*(ssq1-ssq2/local)) / p0 |
| 336 |
qr(i,j,bi,bj) = 0.8d0*ssqa |
| 337 |
ENDDO |
| 338 |
ENDDO |
| 339 |
ENDDO |
| 340 |
ENDDO |
| 341 |
ENDIF |
| 342 |
_EXCH_XY_RS(qr, mythid) |
| 343 |
IF ( UWindFile .NE. ' ' ) THEN |
| 344 |
CALL READ_FLD_XY_RS( UWindFile,uwind,' ',0,myThid ) |
| 345 |
ELSE |
| 346 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 347 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 348 |
DO j=1,sNy |
| 349 |
DO i=1,sNx |
| 350 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 351 |
c mod for debug |
| 352 |
c to return to original code, uncomment following line |
| 353 |
c comment out 2nd line |
| 354 |
local=-5.d0*cos(2.d0*pi*float(jg-1)/(float(ny-1))) |
| 355 |
c local=0.d0*cos(2.d0*pi*float(jg-1)/(float(ny-1))) |
| 356 |
uwind(i,j,bi,bj) = local |
| 357 |
ENDDO |
| 358 |
ENDDO |
| 359 |
ENDDO |
| 360 |
ENDDO |
| 361 |
_EXCH_XY_RS(uwind, mythid) |
| 362 |
ENDIF |
| 363 |
IF ( VWindFile .NE. ' ' ) THEN |
| 364 |
CALL READ_FLD_XY_RS( VWindFile,vwind,' ',0,myThid ) |
| 365 |
ELSE |
| 366 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 367 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 368 |
DO j=1,sNy |
| 369 |
DO i=1,sNx |
| 370 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 371 |
vwind(i,j,bi,bj) = 0.d0 |
| 372 |
ENDDO |
| 373 |
ENDDO |
| 374 |
ENDDO |
| 375 |
ENDDO |
| 376 |
ENDIF |
| 377 |
_EXCH_XY_RS(vwind, mythid) |
| 378 |
ENDIF |
| 379 |
|
| 380 |
C endif for periodicForcing |
| 381 |
ENDIF |
| 382 |
|
| 383 |
RETURN |
| 384 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph