| 1 | !********************************************************************** |
|---|
| 2 | ! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 * |
|---|
| 3 | ! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, * |
|---|
| 4 | ! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann * |
|---|
| 5 | ! * |
|---|
| 6 | ! This file is part of FLEXPART. * |
|---|
| 7 | ! * |
|---|
| 8 | ! FLEXPART is free software: you can redistribute it and/or modify * |
|---|
| 9 | ! it under the terms of the GNU General Public License as published by* |
|---|
| 10 | ! the Free Software Foundation, either version 3 of the License, or * |
|---|
| 11 | ! (at your option) any later version. * |
|---|
| 12 | ! * |
|---|
| 13 | ! FLEXPART is distributed in the hope that it will be useful, * |
|---|
| 14 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
|---|
| 15 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
|---|
| 16 | ! GNU General Public License for more details. * |
|---|
| 17 | ! * |
|---|
| 18 | ! You should have received a copy of the GNU General Public License * |
|---|
| 19 | ! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
|---|
| 20 | !********************************************************************** |
|---|
| 21 | |
|---|
| 22 | subroutine boundcond_domainfill(itime,loutend) |
|---|
| 23 | ! i i |
|---|
| 24 | !***************************************************************************** |
|---|
| 25 | ! * |
|---|
| 26 | ! Particles are created by this subroutine continuously throughout the * |
|---|
| 27 | ! simulation at the boundaries of the domain-filling box. * |
|---|
| 28 | ! All particles carry the same amount of mass which alltogether comprises the* |
|---|
| 29 | ! mass of air within the box, which remains (more or less) constant. * |
|---|
| 30 | ! * |
|---|
| 31 | ! Author: A. Stohl * |
|---|
| 32 | ! * |
|---|
| 33 | ! 16 October 2002 * |
|---|
| 34 | ! * |
|---|
| 35 | !***************************************************************************** |
|---|
| 36 | ! * |
|---|
| 37 | ! Variables: * |
|---|
| 38 | ! * |
|---|
| 39 | ! nx_we(2) grid indices for western and eastern boundary of domain- * |
|---|
| 40 | ! filling trajectory calculations * |
|---|
| 41 | ! ny_sn(2) grid indices for southern and northern boundary of domain- * |
|---|
| 42 | ! filling trajectory calculations * |
|---|
| 43 | ! * |
|---|
| 44 | !***************************************************************************** |
|---|
| 45 | |
|---|
| 46 | use point_mod |
|---|
| 47 | use par_mod |
|---|
| 48 | use com_mod |
|---|
| 49 | use random_mod, only: ran1 |
|---|
| 50 | |
|---|
| 51 | implicit none |
|---|
| 52 | |
|---|
| 53 | real :: dz,dz1,dz2,dt1,dt2,dtt,ylat,xm,cosfact,accmasst |
|---|
| 54 | integer :: itime,in,indz,indzp,i,loutend |
|---|
| 55 | integer :: j,k,ix,jy,m,indzh,indexh,minpart,ipart,mmass |
|---|
| 56 | integer :: numactiveparticles |
|---|
| 57 | |
|---|
| 58 | real :: windl(2),rhol(2) |
|---|
| 59 | real :: windhl(2),rhohl(2) |
|---|
| 60 | real :: windx,rhox |
|---|
| 61 | real :: deltaz,boundarea,fluxofmass |
|---|
| 62 | |
|---|
| 63 | integer :: ixm,ixp,jym,jyp,indzm,mm |
|---|
| 64 | real :: pvpart,ddx,ddy,rddx,rddy,p1,p2,p3,p4,y1(2),yh1(2) |
|---|
| 65 | |
|---|
| 66 | integer :: idummy = -11 |
|---|
| 67 | |
|---|
| 68 | |
|---|
| 69 | ! If domain-filling is global, no boundary conditions are needed |
|---|
| 70 | !*************************************************************** |
|---|
| 71 | |
|---|
| 72 | if (gdomainfill) return |
|---|
| 73 | |
|---|
| 74 | accmasst=0. |
|---|
| 75 | numactiveparticles=0 |
|---|
| 76 | |
|---|
| 77 | ! Terminate trajectories that have left the domain, if domain-filling |
|---|
| 78 | ! trajectory calculation domain is not global |
|---|
| 79 | !******************************************************************** |
|---|
| 80 | |
|---|
| 81 | do i=1,numpart |
|---|
| 82 | if (itra1(i).eq.itime) then |
|---|
| 83 | if ((ytra1(i).gt.real(ny_sn(2))).or. & |
|---|
| 84 | (ytra1(i).lt.real(ny_sn(1)))) itra1(i)=-999999999 |
|---|
| 85 | if (((.not.xglobal).or.(nx_we(2).ne.(nx-2))).and. & |
|---|
| 86 | ((xtra1(i).lt.real(nx_we(1))).or. & |
|---|
| 87 | (xtra1(i).gt.real(nx_we(2))))) itra1(i)=-999999999 |
|---|
| 88 | endif |
|---|
| 89 | if (itra1(i).ne.-999999999) numactiveparticles= & |
|---|
| 90 | numactiveparticles+1 |
|---|
| 91 | end do |
|---|
| 92 | |
|---|
| 93 | |
|---|
| 94 | ! Determine auxiliary variables for time interpolation |
|---|
| 95 | !***************************************************** |
|---|
| 96 | |
|---|
| 97 | dt1=real(itime-memtime(1)) |
|---|
| 98 | dt2=real(memtime(2)-itime) |
|---|
| 99 | dtt=1./(dt1+dt2) |
|---|
| 100 | |
|---|
| 101 | ! Initialize auxiliary variable used to search for vacant storage space |
|---|
| 102 | !********************************************************************** |
|---|
| 103 | |
|---|
| 104 | minpart=1 |
|---|
| 105 | |
|---|
| 106 | !*************************************** |
|---|
| 107 | ! Western and eastern boundary condition |
|---|
| 108 | !*************************************** |
|---|
| 109 | |
|---|
| 110 | ! Loop from south to north |
|---|
| 111 | !************************* |
|---|
| 112 | |
|---|
| 113 | do jy=ny_sn(1),ny_sn(2) |
|---|
| 114 | |
|---|
| 115 | ! Loop over western (index 1) and eastern (index 2) boundary |
|---|
| 116 | !*********************************************************** |
|---|
| 117 | |
|---|
| 118 | do k=1,2 |
|---|
| 119 | |
|---|
| 120 | ! Loop over all release locations in a column |
|---|
| 121 | !******************************************** |
|---|
| 122 | |
|---|
| 123 | do j=1,numcolumn_we(k,jy) |
|---|
| 124 | |
|---|
| 125 | ! Determine, for each release location, the area of the corresponding boundary |
|---|
| 126 | !***************************************************************************** |
|---|
| 127 | |
|---|
| 128 | if (j.eq.1) then |
|---|
| 129 | deltaz=(zcolumn_we(k,jy,2)+zcolumn_we(k,jy,1))/2. |
|---|
| 130 | else if (j.eq.numcolumn_we(k,jy)) then |
|---|
| 131 | ! deltaz=height(nz)-(zcolumn_we(k,jy,j-1)+ |
|---|
| 132 | ! + zcolumn_we(k,jy,j))/2. |
|---|
| 133 | ! In order to avoid taking a very high column for very many particles, |
|---|
| 134 | ! use the deltaz from one particle below instead |
|---|
| 135 | deltaz=(zcolumn_we(k,jy,j)-zcolumn_we(k,jy,j-2))/2. |
|---|
| 136 | else |
|---|
| 137 | deltaz=(zcolumn_we(k,jy,j+1)-zcolumn_we(k,jy,j-1))/2. |
|---|
| 138 | endif |
|---|
| 139 | if ((jy.eq.ny_sn(1)).or.(jy.eq.ny_sn(2))) then |
|---|
| 140 | boundarea=deltaz*111198.5/2.*dy |
|---|
| 141 | else |
|---|
| 142 | boundarea=deltaz*111198.5*dy |
|---|
| 143 | endif |
|---|
| 144 | |
|---|
| 145 | |
|---|
| 146 | ! Interpolate the wind velocity and density to the release location |
|---|
| 147 | !****************************************************************** |
|---|
| 148 | |
|---|
| 149 | ! Determine the model level below the release position |
|---|
| 150 | !***************************************************** |
|---|
| 151 | |
|---|
| 152 | do i=2,nz |
|---|
| 153 | if (height(i).gt.zcolumn_we(k,jy,j)) then |
|---|
| 154 | indz=i-1 |
|---|
| 155 | indzp=i |
|---|
| 156 | goto 6 |
|---|
| 157 | endif |
|---|
| 158 | end do |
|---|
| 159 | 6 continue |
|---|
| 160 | |
|---|
| 161 | ! Vertical distance to the level below and above current position |
|---|
| 162 | !**************************************************************** |
|---|
| 163 | |
|---|
| 164 | dz1=zcolumn_we(k,jy,j)-height(indz) |
|---|
| 165 | dz2=height(indzp)-zcolumn_we(k,jy,j) |
|---|
| 166 | dz=1./(dz1+dz2) |
|---|
| 167 | |
|---|
| 168 | ! Vertical and temporal interpolation |
|---|
| 169 | !************************************ |
|---|
| 170 | |
|---|
| 171 | do m=1,2 |
|---|
| 172 | indexh=memind(m) |
|---|
| 173 | do in=1,2 |
|---|
| 174 | indzh=indz+in-1 |
|---|
| 175 | windl(in)=uu(nx_we(k),jy,indzh,indexh) |
|---|
| 176 | rhol(in)=rho(nx_we(k),jy,indzh,indexh) |
|---|
| 177 | end do |
|---|
| 178 | |
|---|
| 179 | windhl(m)=(dz2*windl(1)+dz1*windl(2))*dz |
|---|
| 180 | rhohl(m)=(dz2*rhol(1)+dz1*rhol(2))*dz |
|---|
| 181 | end do |
|---|
| 182 | |
|---|
| 183 | windx=(windhl(1)*dt2+windhl(2)*dt1)*dtt |
|---|
| 184 | rhox=(rhohl(1)*dt2+rhohl(2)*dt1)*dtt |
|---|
| 185 | |
|---|
| 186 | ! Calculate mass flux |
|---|
| 187 | !******************** |
|---|
| 188 | |
|---|
| 189 | fluxofmass=windx*rhox*boundarea*real(lsynctime) |
|---|
| 190 | |
|---|
| 191 | |
|---|
| 192 | ! If the mass flux is directed into the domain, add it to previous mass fluxes; |
|---|
| 193 | ! if it is out of the domain, set accumulated mass flux to zero |
|---|
| 194 | !****************************************************************************** |
|---|
| 195 | |
|---|
| 196 | if (k.eq.1) then |
|---|
| 197 | if (fluxofmass.ge.0.) then |
|---|
| 198 | acc_mass_we(k,jy,j)=acc_mass_we(k,jy,j)+fluxofmass |
|---|
| 199 | else |
|---|
| 200 | acc_mass_we(k,jy,j)=0. |
|---|
| 201 | endif |
|---|
| 202 | else |
|---|
| 203 | if (fluxofmass.le.0.) then |
|---|
| 204 | acc_mass_we(k,jy,j)=acc_mass_we(k,jy,j)+abs(fluxofmass) |
|---|
| 205 | else |
|---|
| 206 | acc_mass_we(k,jy,j)=0. |
|---|
| 207 | endif |
|---|
| 208 | endif |
|---|
| 209 | accmasst=accmasst+acc_mass_we(k,jy,j) |
|---|
| 210 | |
|---|
| 211 | ! If the accumulated mass exceeds half the mass that each particle shall carry, |
|---|
| 212 | ! one (or more) particle(s) is (are) released and the accumulated mass is |
|---|
| 213 | ! reduced by the mass of this (these) particle(s) |
|---|
| 214 | !****************************************************************************** |
|---|
| 215 | |
|---|
| 216 | if (acc_mass_we(k,jy,j).ge.xmassperparticle/2.) then |
|---|
| 217 | mmass=int((acc_mass_we(k,jy,j)+xmassperparticle/2.)/ & |
|---|
| 218 | xmassperparticle) |
|---|
| 219 | acc_mass_we(k,jy,j)=acc_mass_we(k,jy,j)- & |
|---|
| 220 | real(mmass)*xmassperparticle |
|---|
| 221 | else |
|---|
| 222 | mmass=0 |
|---|
| 223 | endif |
|---|
| 224 | |
|---|
| 225 | do m=1,mmass |
|---|
| 226 | do ipart=minpart,maxpart |
|---|
| 227 | |
|---|
| 228 | ! If a vacant storage space is found, attribute everything to this array element |
|---|
| 229 | !***************************************************************************** |
|---|
| 230 | |
|---|
| 231 | if (itra1(ipart).ne.itime) then |
|---|
| 232 | |
|---|
| 233 | ! Assign particle positions |
|---|
| 234 | !************************** |
|---|
| 235 | |
|---|
| 236 | xtra1(ipart)=real(nx_we(k)) |
|---|
| 237 | if (jy.eq.ny_sn(1)) then |
|---|
| 238 | ytra1(ipart)=real(jy)+0.5*ran1(idummy) |
|---|
| 239 | else if (jy.eq.ny_sn(2)) then |
|---|
| 240 | ytra1(ipart)=real(jy)-0.5*ran1(idummy) |
|---|
| 241 | else |
|---|
| 242 | ytra1(ipart)=real(jy)+(ran1(idummy)-.5) |
|---|
| 243 | endif |
|---|
| 244 | if (j.eq.1) then |
|---|
| 245 | ztra1(ipart)=zcolumn_we(k,jy,1)+(zcolumn_we(k,jy,2)- & |
|---|
| 246 | zcolumn_we(k,jy,1))/4. |
|---|
| 247 | else if (j.eq.numcolumn_we(k,jy)) then |
|---|
| 248 | ztra1(ipart)=(2.*zcolumn_we(k,jy,j)+ & |
|---|
| 249 | zcolumn_we(k,jy,j-1)+height(nz))/4. |
|---|
| 250 | else |
|---|
| 251 | ztra1(ipart)=zcolumn_we(k,jy,j-1)+ran1(idummy)* & |
|---|
| 252 | (zcolumn_we(k,jy,j+1)-zcolumn_we(k,jy,j-1)) |
|---|
| 253 | endif |
|---|
| 254 | |
|---|
| 255 | ! Interpolate PV to the particle position |
|---|
| 256 | !**************************************** |
|---|
| 257 | ixm=int(xtra1(ipart)) |
|---|
| 258 | jym=int(ytra1(ipart)) |
|---|
| 259 | ixp=ixm+1 |
|---|
| 260 | jyp=jym+1 |
|---|
| 261 | ddx=xtra1(ipart)-real(ixm) |
|---|
| 262 | ddy=ytra1(ipart)-real(jym) |
|---|
| 263 | rddx=1.-ddx |
|---|
| 264 | rddy=1.-ddy |
|---|
| 265 | p1=rddx*rddy |
|---|
| 266 | p2=ddx*rddy |
|---|
| 267 | p3=rddx*ddy |
|---|
| 268 | p4=ddx*ddy |
|---|
| 269 | do i=2,nz |
|---|
| 270 | if (height(i).gt.ztra1(ipart)) then |
|---|
| 271 | indzm=i-1 |
|---|
| 272 | indzp=i |
|---|
| 273 | goto 26 |
|---|
| 274 | endif |
|---|
| 275 | end do |
|---|
| 276 | 26 continue |
|---|
| 277 | dz1=ztra1(ipart)-height(indzm) |
|---|
| 278 | dz2=height(indzp)-ztra1(ipart) |
|---|
| 279 | dz=1./(dz1+dz2) |
|---|
| 280 | do mm=1,2 |
|---|
| 281 | indexh=memind(mm) |
|---|
| 282 | do in=1,2 |
|---|
| 283 | indzh=indzm+in-1 |
|---|
| 284 | y1(in)=p1*pv(ixm,jym,indzh,indexh) & |
|---|
| 285 | +p2*pv(ixp,jym,indzh,indexh) & |
|---|
| 286 | +p3*pv(ixm,jyp,indzh,indexh) & |
|---|
| 287 | +p4*pv(ixp,jyp,indzh,indexh) |
|---|
| 288 | end do |
|---|
| 289 | yh1(mm)=(dz2*y1(1)+dz1*y1(2))*dz |
|---|
| 290 | end do |
|---|
| 291 | pvpart=(yh1(1)*dt2+yh1(2)*dt1)*dtt |
|---|
| 292 | ylat=ylat0+ytra1(ipart)*dy |
|---|
| 293 | if (ylat.lt.0.) pvpart=-1.*pvpart |
|---|
| 294 | |
|---|
| 295 | |
|---|
| 296 | ! For domain-filling option 2 (stratospheric O3), do the rest only in the stratosphere |
|---|
| 297 | !***************************************************************************** |
|---|
| 298 | |
|---|
| 299 | if (((ztra1(ipart).gt.3000.).and. & |
|---|
| 300 | (pvpart.gt.pvcrit)).or.(mdomainfill.eq.1)) then |
|---|
| 301 | nclass(ipart)=min(int(ran1(idummy)* & |
|---|
| 302 | real(nclassunc))+1,nclassunc) |
|---|
| 303 | numactiveparticles=numactiveparticles+1 |
|---|
| 304 | numparticlecount=numparticlecount+1 |
|---|
| 305 | npoint(ipart)=numparticlecount |
|---|
| 306 | idt(ipart)=mintime |
|---|
| 307 | itra1(ipart)=itime |
|---|
| 308 | itramem(ipart)=itra1(ipart) |
|---|
| 309 | itrasplit(ipart)=itra1(ipart)+ldirect*itsplit |
|---|
| 310 | xmass1(ipart,1)=xmassperparticle |
|---|
| 311 | if (mdomainfill.eq.2) xmass1(ipart,1)= & |
|---|
| 312 | xmass1(ipart,1)*pvpart*48./29.*ozonescale/10.**9 |
|---|
| 313 | else |
|---|
| 314 | goto 71 |
|---|
| 315 | endif |
|---|
| 316 | |
|---|
| 317 | |
|---|
| 318 | ! Increase numpart, if necessary |
|---|
| 319 | !******************************* |
|---|
| 320 | |
|---|
| 321 | numpart=max(numpart,ipart) |
|---|
| 322 | goto 73 ! Storage space has been found, stop searching |
|---|
| 323 | endif |
|---|
| 324 | end do |
|---|
| 325 | if (ipart.gt.maxpart) & |
|---|
| 326 | stop 'boundcond_domainfill.f: too many particles required' |
|---|
| 327 | 73 minpart=ipart+1 |
|---|
| 328 | 71 continue |
|---|
| 329 | end do |
|---|
| 330 | |
|---|
| 331 | |
|---|
| 332 | end do |
|---|
| 333 | end do |
|---|
| 334 | end do |
|---|
| 335 | |
|---|
| 336 | |
|---|
| 337 | !***************************************** |
|---|
| 338 | ! Southern and northern boundary condition |
|---|
| 339 | !***************************************** |
|---|
| 340 | |
|---|
| 341 | ! Loop from west to east |
|---|
| 342 | !*********************** |
|---|
| 343 | |
|---|
| 344 | do ix=nx_we(1),nx_we(2) |
|---|
| 345 | |
|---|
| 346 | ! Loop over southern (index 1) and northern (index 2) boundary |
|---|
| 347 | !************************************************************* |
|---|
| 348 | |
|---|
| 349 | do k=1,2 |
|---|
| 350 | ylat=ylat0+real(ny_sn(k))*dy |
|---|
| 351 | cosfact=cos(ylat*pi180) |
|---|
| 352 | |
|---|
| 353 | ! Loop over all release locations in a column |
|---|
| 354 | !******************************************** |
|---|
| 355 | |
|---|
| 356 | do j=1,numcolumn_sn(k,ix) |
|---|
| 357 | |
|---|
| 358 | ! Determine, for each release location, the area of the corresponding boundary |
|---|
| 359 | !***************************************************************************** |
|---|
| 360 | |
|---|
| 361 | if (j.eq.1) then |
|---|
| 362 | deltaz=(zcolumn_sn(k,ix,2)+zcolumn_sn(k,ix,1))/2. |
|---|
| 363 | else if (j.eq.numcolumn_sn(k,ix)) then |
|---|
| 364 | ! deltaz=height(nz)-(zcolumn_sn(k,ix,j-1)+ |
|---|
| 365 | ! + zcolumn_sn(k,ix,j))/2. |
|---|
| 366 | ! In order to avoid taking a very high column for very many particles, |
|---|
| 367 | ! use the deltaz from one particle below instead |
|---|
| 368 | deltaz=(zcolumn_sn(k,ix,j)-zcolumn_sn(k,ix,j-2))/2. |
|---|
| 369 | else |
|---|
| 370 | deltaz=(zcolumn_sn(k,ix,j+1)-zcolumn_sn(k,ix,j-1))/2. |
|---|
| 371 | endif |
|---|
| 372 | if ((ix.eq.nx_we(1)).or.(ix.eq.nx_we(2))) then |
|---|
| 373 | boundarea=deltaz*111198.5/2.*cosfact*dx |
|---|
| 374 | else |
|---|
| 375 | boundarea=deltaz*111198.5*cosfact*dx |
|---|
| 376 | endif |
|---|
| 377 | |
|---|
| 378 | |
|---|
| 379 | ! Interpolate the wind velocity and density to the release location |
|---|
| 380 | !****************************************************************** |
|---|
| 381 | |
|---|
| 382 | ! Determine the model level below the release position |
|---|
| 383 | !***************************************************** |
|---|
| 384 | |
|---|
| 385 | do i=2,nz |
|---|
| 386 | if (height(i).gt.zcolumn_sn(k,ix,j)) then |
|---|
| 387 | indz=i-1 |
|---|
| 388 | indzp=i |
|---|
| 389 | goto 16 |
|---|
| 390 | endif |
|---|
| 391 | end do |
|---|
| 392 | 16 continue |
|---|
| 393 | |
|---|
| 394 | ! Vertical distance to the level below and above current position |
|---|
| 395 | !**************************************************************** |
|---|
| 396 | |
|---|
| 397 | dz1=zcolumn_sn(k,ix,j)-height(indz) |
|---|
| 398 | dz2=height(indzp)-zcolumn_sn(k,ix,j) |
|---|
| 399 | dz=1./(dz1+dz2) |
|---|
| 400 | |
|---|
| 401 | ! Vertical and temporal interpolation |
|---|
| 402 | !************************************ |
|---|
| 403 | |
|---|
| 404 | do m=1,2 |
|---|
| 405 | indexh=memind(m) |
|---|
| 406 | do in=1,2 |
|---|
| 407 | indzh=indz+in-1 |
|---|
| 408 | windl(in)=vv(ix,ny_sn(k),indzh,indexh) |
|---|
| 409 | rhol(in)=rho(ix,ny_sn(k),indzh,indexh) |
|---|
| 410 | end do |
|---|
| 411 | |
|---|
| 412 | windhl(m)=(dz2*windl(1)+dz1*windl(2))*dz |
|---|
| 413 | rhohl(m)=(dz2*rhol(1)+dz1*rhol(2))*dz |
|---|
| 414 | end do |
|---|
| 415 | |
|---|
| 416 | windx=(windhl(1)*dt2+windhl(2)*dt1)*dtt |
|---|
| 417 | rhox=(rhohl(1)*dt2+rhohl(2)*dt1)*dtt |
|---|
| 418 | |
|---|
| 419 | ! Calculate mass flux |
|---|
| 420 | !******************** |
|---|
| 421 | |
|---|
| 422 | fluxofmass=windx*rhox*boundarea*real(lsynctime) |
|---|
| 423 | |
|---|
| 424 | ! If the mass flux is directed into the domain, add it to previous mass fluxes; |
|---|
| 425 | ! if it is out of the domain, set accumulated mass flux to zero |
|---|
| 426 | !****************************************************************************** |
|---|
| 427 | |
|---|
| 428 | if (k.eq.1) then |
|---|
| 429 | if (fluxofmass.ge.0.) then |
|---|
| 430 | acc_mass_sn(k,ix,j)=acc_mass_sn(k,ix,j)+fluxofmass |
|---|
| 431 | else |
|---|
| 432 | acc_mass_sn(k,ix,j)=0. |
|---|
| 433 | endif |
|---|
| 434 | else |
|---|
| 435 | if (fluxofmass.le.0.) then |
|---|
| 436 | acc_mass_sn(k,ix,j)=acc_mass_sn(k,ix,j)+abs(fluxofmass) |
|---|
| 437 | else |
|---|
| 438 | acc_mass_sn(k,ix,j)=0. |
|---|
| 439 | endif |
|---|
| 440 | endif |
|---|
| 441 | accmasst=accmasst+acc_mass_sn(k,ix,j) |
|---|
| 442 | |
|---|
| 443 | ! If the accumulated mass exceeds half the mass that each particle shall carry, |
|---|
| 444 | ! one (or more) particle(s) is (are) released and the accumulated mass is |
|---|
| 445 | ! reduced by the mass of this (these) particle(s) |
|---|
| 446 | !****************************************************************************** |
|---|
| 447 | |
|---|
| 448 | if (acc_mass_sn(k,ix,j).ge.xmassperparticle/2.) then |
|---|
| 449 | mmass=int((acc_mass_sn(k,ix,j)+xmassperparticle/2.)/ & |
|---|
| 450 | xmassperparticle) |
|---|
| 451 | acc_mass_sn(k,ix,j)=acc_mass_sn(k,ix,j)- & |
|---|
| 452 | real(mmass)*xmassperparticle |
|---|
| 453 | else |
|---|
| 454 | mmass=0 |
|---|
| 455 | endif |
|---|
| 456 | |
|---|
| 457 | do m=1,mmass |
|---|
| 458 | do ipart=minpart,maxpart |
|---|
| 459 | |
|---|
| 460 | ! If a vacant storage space is found, attribute everything to this array element |
|---|
| 461 | !***************************************************************************** |
|---|
| 462 | |
|---|
| 463 | if (itra1(ipart).ne.itime) then |
|---|
| 464 | |
|---|
| 465 | ! Assign particle positions |
|---|
| 466 | !************************** |
|---|
| 467 | |
|---|
| 468 | ytra1(ipart)=real(ny_sn(k)) |
|---|
| 469 | if (ix.eq.nx_we(1)) then |
|---|
| 470 | xtra1(ipart)=real(ix)+0.5*ran1(idummy) |
|---|
| 471 | else if (ix.eq.nx_we(2)) then |
|---|
| 472 | xtra1(ipart)=real(ix)-0.5*ran1(idummy) |
|---|
| 473 | else |
|---|
| 474 | xtra1(ipart)=real(ix)+(ran1(idummy)-.5) |
|---|
| 475 | endif |
|---|
| 476 | if (j.eq.1) then |
|---|
| 477 | ztra1(ipart)=zcolumn_sn(k,ix,1)+(zcolumn_sn(k,ix,2)- & |
|---|
| 478 | zcolumn_sn(k,ix,1))/4. |
|---|
| 479 | else if (j.eq.numcolumn_sn(k,ix)) then |
|---|
| 480 | ztra1(ipart)=(2.*zcolumn_sn(k,ix,j)+ & |
|---|
| 481 | zcolumn_sn(k,ix,j-1)+height(nz))/4. |
|---|
| 482 | else |
|---|
| 483 | ztra1(ipart)=zcolumn_sn(k,ix,j-1)+ran1(idummy)* & |
|---|
| 484 | (zcolumn_sn(k,ix,j+1)-zcolumn_sn(k,ix,j-1)) |
|---|
| 485 | endif |
|---|
| 486 | |
|---|
| 487 | |
|---|
| 488 | ! Interpolate PV to the particle position |
|---|
| 489 | !**************************************** |
|---|
| 490 | ixm=int(xtra1(ipart)) |
|---|
| 491 | jym=int(ytra1(ipart)) |
|---|
| 492 | ixp=ixm+1 |
|---|
| 493 | jyp=jym+1 |
|---|
| 494 | ddx=xtra1(ipart)-real(ixm) |
|---|
| 495 | ddy=ytra1(ipart)-real(jym) |
|---|
| 496 | rddx=1.-ddx |
|---|
| 497 | rddy=1.-ddy |
|---|
| 498 | p1=rddx*rddy |
|---|
| 499 | p2=ddx*rddy |
|---|
| 500 | p3=rddx*ddy |
|---|
| 501 | p4=ddx*ddy |
|---|
| 502 | do i=2,nz |
|---|
| 503 | if (height(i).gt.ztra1(ipart)) then |
|---|
| 504 | indzm=i-1 |
|---|
| 505 | indzp=i |
|---|
| 506 | goto 126 |
|---|
| 507 | endif |
|---|
| 508 | end do |
|---|
| 509 | 126 continue |
|---|
| 510 | dz1=ztra1(ipart)-height(indzm) |
|---|
| 511 | dz2=height(indzp)-ztra1(ipart) |
|---|
| 512 | dz=1./(dz1+dz2) |
|---|
| 513 | do mm=1,2 |
|---|
| 514 | indexh=memind(mm) |
|---|
| 515 | do in=1,2 |
|---|
| 516 | indzh=indzm+in-1 |
|---|
| 517 | y1(in)=p1*pv(ixm,jym,indzh,indexh) & |
|---|
| 518 | +p2*pv(ixp,jym,indzh,indexh) & |
|---|
| 519 | +p3*pv(ixm,jyp,indzh,indexh) & |
|---|
| 520 | +p4*pv(ixp,jyp,indzh,indexh) |
|---|
| 521 | end do |
|---|
| 522 | yh1(mm)=(dz2*y1(1)+dz1*y1(2))*dz |
|---|
| 523 | end do |
|---|
| 524 | pvpart=(yh1(1)*dt2+yh1(2)*dt1)*dtt |
|---|
| 525 | if (ylat.lt.0.) pvpart=-1.*pvpart |
|---|
| 526 | |
|---|
| 527 | |
|---|
| 528 | ! For domain-filling option 2 (stratospheric O3), do the rest only in the stratosphere |
|---|
| 529 | !***************************************************************************** |
|---|
| 530 | |
|---|
| 531 | if (((ztra1(ipart).gt.3000.).and. & |
|---|
| 532 | (pvpart.gt.pvcrit)).or.(mdomainfill.eq.1)) then |
|---|
| 533 | nclass(ipart)=min(int(ran1(idummy)* & |
|---|
| 534 | real(nclassunc))+1,nclassunc) |
|---|
| 535 | numactiveparticles=numactiveparticles+1 |
|---|
| 536 | numparticlecount=numparticlecount+1 |
|---|
| 537 | npoint(ipart)=numparticlecount |
|---|
| 538 | idt(ipart)=mintime |
|---|
| 539 | itra1(ipart)=itime |
|---|
| 540 | itramem(ipart)=itra1(ipart) |
|---|
| 541 | itrasplit(ipart)=itra1(ipart)+ldirect*itsplit |
|---|
| 542 | xmass1(ipart,1)=xmassperparticle |
|---|
| 543 | if (mdomainfill.eq.2) xmass1(ipart,1)= & |
|---|
| 544 | xmass1(ipart,1)*pvpart*48./29.*ozonescale/10.**9 |
|---|
| 545 | else |
|---|
| 546 | goto 171 |
|---|
| 547 | endif |
|---|
| 548 | |
|---|
| 549 | |
|---|
| 550 | ! Increase numpart, if necessary |
|---|
| 551 | !******************************* |
|---|
| 552 | numpart=max(numpart,ipart) |
|---|
| 553 | goto 173 ! Storage space has been found, stop searching |
|---|
| 554 | endif |
|---|
| 555 | end do |
|---|
| 556 | if (ipart.gt.maxpart) & |
|---|
| 557 | stop 'boundcond_domainfill.f: too many particles required' |
|---|
| 558 | 173 minpart=ipart+1 |
|---|
| 559 | 171 continue |
|---|
| 560 | end do |
|---|
| 561 | |
|---|
| 562 | |
|---|
| 563 | end do |
|---|
| 564 | end do |
|---|
| 565 | end do |
|---|
| 566 | |
|---|
| 567 | |
|---|
| 568 | xm=0. |
|---|
| 569 | do i=1,numpart |
|---|
| 570 | if (itra1(i).eq.itime) xm=xm+xmass1(i,1) |
|---|
| 571 | end do |
|---|
| 572 | |
|---|
| 573 | !write(*,*) itime,numactiveparticles,numparticlecount,numpart, |
|---|
| 574 | ! +xm,accmasst,xm+accmasst |
|---|
| 575 | |
|---|
| 576 | |
|---|
| 577 | ! If particles shall be dumped, then accumulated masses at the domain boundaries |
|---|
| 578 | ! must be dumped, too, to be used for later runs |
|---|
| 579 | !***************************************************************************** |
|---|
| 580 | |
|---|
| 581 | if ((ipout.gt.0).and.(itime.eq.loutend)) then |
|---|
| 582 | open(unitboundcond,file=path(2)(1:length(2))//'boundcond.bin', & |
|---|
| 583 | form='unformatted') |
|---|
| 584 | write(unitboundcond) numcolumn_we,numcolumn_sn, & |
|---|
| 585 | zcolumn_we,zcolumn_sn,acc_mass_we,acc_mass_sn |
|---|
| 586 | close(unitboundcond) |
|---|
| 587 | endif |
|---|
| 588 | |
|---|
| 589 | end subroutine boundcond_domainfill |
|---|
