| 1 | !********************************************************************** |
|---|
| 2 | ! Copyright 1998-2015 * |
|---|
| 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 verttransform_nests(n,uuhn,vvhn,wwhn,pvhn) |
|---|
| 23 | ! i i i i i |
|---|
| 24 | !***************************************************************************** |
|---|
| 25 | ! * |
|---|
| 26 | ! This subroutine transforms temperature, dew point temperature and * |
|---|
| 27 | ! wind components from eta to meter coordinates. * |
|---|
| 28 | ! The vertical wind component is transformed from Pa/s to m/s using * |
|---|
| 29 | ! the conversion factor pinmconv. * |
|---|
| 30 | ! In addition, this routine calculates vertical density gradients * |
|---|
| 31 | ! needed for the parameterization of the turbulent velocities. * |
|---|
| 32 | ! It is similar to verttransform, but makes the transformations for * |
|---|
| 33 | ! the nested grids. * |
|---|
| 34 | ! * |
|---|
| 35 | ! Author: A. Stohl, G. Wotawa * |
|---|
| 36 | ! * |
|---|
| 37 | ! 12 August 1996 * |
|---|
| 38 | ! Update: 16 January 1998 * |
|---|
| 39 | ! * |
|---|
| 40 | ! Major update: 17 February 1999 * |
|---|
| 41 | ! by G. Wotawa * |
|---|
| 42 | ! * |
|---|
| 43 | ! - Vertical levels for u, v and w are put together * |
|---|
| 44 | ! - Slope correction for vertical velocity: Modification of calculation * |
|---|
| 45 | ! procedure * |
|---|
| 46 | ! * |
|---|
| 47 | !***************************************************************************** |
|---|
| 48 | ! Changes, Bernd C. Krueger, Feb. 2001: (marked "C-cv") |
|---|
| 49 | ! Variables tthn and qvhn (on eta coordinates) from common block |
|---|
| 50 | !***************************************************************************** |
|---|
| 51 | ! Sabine Eckhardt, March 2007 |
|---|
| 52 | ! add the variable cloud for use with scavenging - descr. in com_mod |
|---|
| 53 | !***************************************************************************** |
|---|
| 54 | ! Petra Seibert, Feb 2015: Add quick fix from 2013 |
|---|
| 55 | !***************************************************************************** |
|---|
| 56 | ! * |
|---|
| 57 | ! Variables: * |
|---|
| 58 | ! nxn,nyn,nuvz,nwz field dimensions in x,y and z direction * |
|---|
| 59 | ! uun wind components in x-direction [m/s] * |
|---|
| 60 | ! vvn wind components in y-direction [m/s] * |
|---|
| 61 | ! wwn wind components in z-direction [deltaeta/s]* |
|---|
| 62 | ! ttn temperature [K] * |
|---|
| 63 | ! pvn potential vorticity (pvu) * |
|---|
| 64 | ! psn surface pressure [Pa] * |
|---|
| 65 | ! * |
|---|
| 66 | !***************************************************************************** |
|---|
| 67 | |
|---|
| 68 | use par_mod |
|---|
| 69 | use com_mod |
|---|
| 70 | |
|---|
| 71 | implicit none |
|---|
| 72 | |
|---|
| 73 | integer :: ix,jy,kz,iz,n,l,kmin,kl,klp,ix1,jy1,ixp,jyp,kz_inv |
|---|
| 74 | integer :: icloudtop |
|---|
| 75 | real :: f_qvsat,pressure |
|---|
| 76 | real :: rh,lsp,convp,prec,rhmin |
|---|
| 77 | real :: rhoh(nuvzmax),pinmconv(nzmax) |
|---|
| 78 | real :: wzlev(nwzmax),uvwzlev(0:nxmaxn-1,0:nymaxn-1,nzmax) |
|---|
| 79 | real :: ew,pint,tv,tvold,pold,dz1,dz2,dz,ui,vi |
|---|
| 80 | real :: dzdx,dzdy |
|---|
| 81 | real :: dzdx1,dzdx2,dzdy1,dzdy2,cosf |
|---|
| 82 | real :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
|---|
| 83 | real :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
|---|
| 84 | real :: pvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
|---|
| 85 | real :: wwhn(0:nxmaxn-1,0:nymaxn-1,nwzmax,maxnests) |
|---|
| 86 | real,parameter :: const=r_air/ga |
|---|
| 87 | |
|---|
| 88 | logical :: lconvectprec, lsearch |
|---|
| 89 | |
|---|
| 90 | ! Loop over all nests |
|---|
| 91 | !******************** |
|---|
| 92 | |
|---|
| 93 | numbnest_loop: & |
|---|
| 94 | do l=1,numbnests |
|---|
| 95 | |
|---|
| 96 | ! Loop over the whole grid |
|---|
| 97 | !************************* |
|---|
| 98 | |
|---|
| 99 | do jy=0,nyn(l)-1 |
|---|
| 100 | do ix=0,nxn(l)-1 |
|---|
| 101 | |
|---|
| 102 | tvold=tt2n(ix,jy,1,n,l)*(1.+0.378*ew(td2n(ix,jy,1,n,l))/ & |
|---|
| 103 | psn(ix,jy,1,n,l)) |
|---|
| 104 | pold=psn(ix,jy,1,n,l) |
|---|
| 105 | uvwzlev(ix,jy,1)=0. |
|---|
| 106 | wzlev(1)=0. |
|---|
| 107 | rhoh(1)=pold/(r_air*tvold) |
|---|
| 108 | |
|---|
| 109 | |
|---|
| 110 | ! Compute heights of eta levels |
|---|
| 111 | !****************************** |
|---|
| 112 | |
|---|
| 113 | do kz=2,nuvz |
|---|
| 114 | pint=akz(kz)+bkz(kz)*psn(ix,jy,1,n,l) |
|---|
| 115 | tv=tthn(ix,jy,kz,n,l)*(1.+0.608*qvhn(ix,jy,kz,n,l)) |
|---|
| 116 | rhoh(kz)=pint/(r_air*tv) |
|---|
| 117 | |
|---|
| 118 | if (abs(tv-tvold).gt.0.2) then |
|---|
| 119 | uvwzlev(ix,jy,kz)=uvwzlev(ix,jy,kz-1)+const*log(pold/pint)* & |
|---|
| 120 | (tv-tvold)/log(tv/tvold) |
|---|
| 121 | else |
|---|
| 122 | uvwzlev(ix,jy,kz)=uvwzlev(ix,jy,kz-1)+const*log(pold/pint)*tv |
|---|
| 123 | endif |
|---|
| 124 | |
|---|
| 125 | tvold=tv |
|---|
| 126 | pold=pint |
|---|
| 127 | end do |
|---|
| 128 | |
|---|
| 129 | |
|---|
| 130 | do kz=2,nwz-1 |
|---|
| 131 | wzlev(kz)=(uvwzlev(ix,jy,kz+1)+uvwzlev(ix,jy,kz))/2. |
|---|
| 132 | end do |
|---|
| 133 | wzlev(nwz)=wzlev(nwz-1)+uvwzlev(ix,jy,nuvz)-uvwzlev(ix,jy,nuvz-1) |
|---|
| 134 | |
|---|
| 135 | ! pinmconv=(h2-h1)/(p2-p1) |
|---|
| 136 | |
|---|
| 137 | pinmconv(1)=(uvwzlev(ix,jy,2)-uvwzlev(ix,jy,1))/ & |
|---|
| 138 | ((aknew(2)+bknew(2)*psn(ix,jy,1,n,l))- & |
|---|
| 139 | (aknew(1)+bknew(1)*psn(ix,jy,1,n,l))) |
|---|
| 140 | do kz=2,nz-1 |
|---|
| 141 | pinmconv(kz)=(uvwzlev(ix,jy,kz+1)-uvwzlev(ix,jy,kz-1))/ & |
|---|
| 142 | ((aknew(kz+1)+bknew(kz+1)*psn(ix,jy,1,n,l))- & |
|---|
| 143 | (aknew(kz-1)+bknew(kz-1)*psn(ix,jy,1,n,l))) |
|---|
| 144 | end do |
|---|
| 145 | pinmconv(nz)=(uvwzlev(ix,jy,nz)-uvwzlev(ix,jy,nz-1))/ & |
|---|
| 146 | ((aknew(nz)+bknew(nz)*psn(ix,jy,1,n,l))- & |
|---|
| 147 | (aknew(nz-1)+bknew(nz-1)*psn(ix,jy,1,n,l))) |
|---|
| 148 | |
|---|
| 149 | |
|---|
| 150 | ! Levels where u,v,t and q are given |
|---|
| 151 | !*********************************** |
|---|
| 152 | |
|---|
| 153 | uun(ix,jy,1,n,l)=uuhn(ix,jy,1,l) |
|---|
| 154 | vvn(ix,jy,1,n,l)=vvhn(ix,jy,1,l) |
|---|
| 155 | ttn(ix,jy,1,n,l)=tthn(ix,jy,1,n,l) |
|---|
| 156 | qvn(ix,jy,1,n,l)=qvhn(ix,jy,1,n,l) |
|---|
| 157 | pvn(ix,jy,1,n,l)=pvhn(ix,jy,1,l) |
|---|
| 158 | rhon(ix,jy,1,n,l)=rhoh(1) |
|---|
| 159 | uun(ix,jy,nz,n,l)=uuhn(ix,jy,nuvz,l) |
|---|
| 160 | vvn(ix,jy,nz,n,l)=vvhn(ix,jy,nuvz,l) |
|---|
| 161 | ttn(ix,jy,nz,n,l)=tthn(ix,jy,nuvz,n,l) |
|---|
| 162 | qvn(ix,jy,nz,n,l)=qvhn(ix,jy,nuvz,n,l) |
|---|
| 163 | pvn(ix,jy,nz,n,l)=pvhn(ix,jy,nuvz,l) |
|---|
| 164 | rhon(ix,jy,nz,n,l)=rhoh(nuvz) |
|---|
| 165 | kmin=2 |
|---|
| 166 | do iz=2,nz-1 |
|---|
| 167 | do kz=kmin,nuvz |
|---|
| 168 | if(height(iz).gt.uvwzlev(ix,jy,nuvz)) then |
|---|
| 169 | uun(ix,jy,iz,n,l)=uun(ix,jy,nz,n,l) |
|---|
| 170 | vvn(ix,jy,iz,n,l)=vvn(ix,jy,nz,n,l) |
|---|
| 171 | ttn(ix,jy,iz,n,l)=ttn(ix,jy,nz,n,l) |
|---|
| 172 | qvn(ix,jy,iz,n,l)=qvn(ix,jy,nz,n,l) |
|---|
| 173 | pvn(ix,jy,iz,n,l)=pvn(ix,jy,nz,n,l) |
|---|
| 174 | rhon(ix,jy,iz,n,l)=rhon(ix,jy,nz,n,l) |
|---|
| 175 | goto 30 |
|---|
| 176 | endif |
|---|
| 177 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
|---|
| 178 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
|---|
| 179 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
|---|
| 180 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
|---|
| 181 | dz=dz1+dz2 |
|---|
| 182 | uun(ix,jy,iz,n,l)=(uuhn(ix,jy,kz-1,l)*dz2+ & |
|---|
| 183 | uuhn(ix,jy,kz,l)*dz1)/dz |
|---|
| 184 | vvn(ix,jy,iz,n,l)=(vvhn(ix,jy,kz-1,l)*dz2+ & |
|---|
| 185 | vvhn(ix,jy,kz,l)*dz1)/dz |
|---|
| 186 | ttn(ix,jy,iz,n,l)=(tthn(ix,jy,kz-1,n,l)*dz2+ & |
|---|
| 187 | tthn(ix,jy,kz,n,l)*dz1)/dz |
|---|
| 188 | qvn(ix,jy,iz,n,l)=(qvhn(ix,jy,kz-1,n,l)*dz2+ & |
|---|
| 189 | qvhn(ix,jy,kz,n,l)*dz1)/dz |
|---|
| 190 | pvn(ix,jy,iz,n,l)=(pvhn(ix,jy,kz-1,l)*dz2+ & |
|---|
| 191 | pvhn(ix,jy,kz,l)*dz1)/dz |
|---|
| 192 | rhon(ix,jy,iz,n,l)=(rhoh(kz-1)*dz2+rhoh(kz)*dz1)/dz |
|---|
| 193 | kmin=kz |
|---|
| 194 | goto 30 |
|---|
| 195 | endif |
|---|
| 196 | end do |
|---|
| 197 | 30 continue |
|---|
| 198 | end do |
|---|
| 199 | |
|---|
| 200 | |
|---|
| 201 | ! Levels where w is given |
|---|
| 202 | !************************ |
|---|
| 203 | |
|---|
| 204 | wwn(ix,jy,1,n,l)=wwhn(ix,jy,1,l)*pinmconv(1) |
|---|
| 205 | wwn(ix,jy,nz,n,l)=wwhn(ix,jy,nwz,l)*pinmconv(nz) |
|---|
| 206 | kmin=2 |
|---|
| 207 | do iz=2,nz |
|---|
| 208 | do kz=kmin,nwz |
|---|
| 209 | if ((height(iz).gt.wzlev(kz-1)).and. & |
|---|
| 210 | (height(iz).le.wzlev(kz))) then |
|---|
| 211 | dz1=height(iz)-wzlev(kz-1) |
|---|
| 212 | dz2=wzlev(kz)-height(iz) |
|---|
| 213 | dz=dz1+dz2 |
|---|
| 214 | wwn(ix,jy,iz,n,l)=(wwhn(ix,jy,kz-1,l)*pinmconv(kz-1)*dz2 & |
|---|
| 215 | +wwhn(ix,jy,kz,l)*pinmconv(kz)*dz1)/dz |
|---|
| 216 | kmin=kz |
|---|
| 217 | goto 40 |
|---|
| 218 | endif |
|---|
| 219 | end do |
|---|
| 220 | 40 continue |
|---|
| 221 | end do |
|---|
| 222 | |
|---|
| 223 | ! Compute density gradients at intermediate levels |
|---|
| 224 | !************************************************* |
|---|
| 225 | |
|---|
| 226 | drhodzn(ix,jy,1,n,l)=(rhon(ix,jy,2,n,l)-rhon(ix,jy,1,n,l))/ & |
|---|
| 227 | (height(2)-height(1)) |
|---|
| 228 | do kz=2,nz-1 |
|---|
| 229 | drhodzn(ix,jy,kz,n,l)=(rhon(ix,jy,kz+1,n,l)- & |
|---|
| 230 | rhon(ix,jy,kz-1,n,l))/(height(kz+1)-height(kz-1)) |
|---|
| 231 | end do |
|---|
| 232 | drhodzn(ix,jy,nz,n,l)=drhodzn(ix,jy,nz-1,n,l) |
|---|
| 233 | |
|---|
| 234 | end do |
|---|
| 235 | end do |
|---|
| 236 | |
|---|
| 237 | |
|---|
| 238 | !**************************************************************** |
|---|
| 239 | ! Compute slope of eta levels in windward direction and resulting |
|---|
| 240 | ! vertical wind correction |
|---|
| 241 | !**************************************************************** |
|---|
| 242 | |
|---|
| 243 | do jy=1,nyn(l)-2 |
|---|
| 244 | cosf=cos((real(jy)*dyn(l)+ylat0n(l))*pi180) |
|---|
| 245 | do ix=1,nxn(l)-2 |
|---|
| 246 | |
|---|
| 247 | kmin=2 |
|---|
| 248 | do iz=2,nz-1 |
|---|
| 249 | |
|---|
| 250 | ui=uun(ix,jy,iz,n,l)*dxconst*xresoln(l)/cosf |
|---|
| 251 | vi=vvn(ix,jy,iz,n,l)*dyconst*yresoln(l) |
|---|
| 252 | |
|---|
| 253 | do kz=kmin,nz |
|---|
| 254 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
|---|
| 255 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
|---|
| 256 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
|---|
| 257 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
|---|
| 258 | dz=dz1+dz2 |
|---|
| 259 | kl=kz-1 |
|---|
| 260 | klp=kz |
|---|
| 261 | kmin=kz |
|---|
| 262 | goto 47 |
|---|
| 263 | endif |
|---|
| 264 | end do |
|---|
| 265 | |
|---|
| 266 | 47 ix1=ix-1 |
|---|
| 267 | jy1=jy-1 |
|---|
| 268 | ixp=ix+1 |
|---|
| 269 | jyp=jy+1 |
|---|
| 270 | |
|---|
| 271 | dzdx1=(uvwzlev(ixp,jy,kl)-uvwzlev(ix1,jy,kl))/2. |
|---|
| 272 | dzdx2=(uvwzlev(ixp,jy,klp)-uvwzlev(ix1,jy,klp))/2. |
|---|
| 273 | dzdx=(dzdx1*dz2+dzdx2*dz1)/dz |
|---|
| 274 | |
|---|
| 275 | dzdy1=(uvwzlev(ix,jyp,kl)-uvwzlev(ix,jy1,kl))/2. |
|---|
| 276 | dzdy2=(uvwzlev(ix,jyp,klp)-uvwzlev(ix,jy1,klp))/2. |
|---|
| 277 | dzdy=(dzdy1*dz2+dzdy2*dz1)/dz |
|---|
| 278 | |
|---|
| 279 | wwn(ix,jy,iz,n,l)=wwn(ix,jy,iz,n,l)+(dzdx*ui+dzdy*vi) |
|---|
| 280 | |
|---|
| 281 | end do |
|---|
| 282 | end do |
|---|
| 283 | end do |
|---|
| 284 | |
|---|
| 285 | ! write (*,*) 'diagnosing nested clouds, n:',n |
|---|
| 286 | jy_loop: & |
|---|
| 287 | do jy=0,nyn(l)-1 |
|---|
| 288 | do ix=0,nxn(l)-1 |
|---|
| 289 | |
|---|
| 290 | lsp=lsprecn(ix,jy,1,n,l) |
|---|
| 291 | convp=convprecn(ix,jy,1,n,l) |
|---|
| 292 | prec=lsp+convp |
|---|
| 293 | if (lsp .gt. convp) then ! prectype='lsp' |
|---|
| 294 | lconvectprec = .false. |
|---|
| 295 | else ! prectype='cp ' |
|---|
| 296 | lconvectprec = .true. |
|---|
| 297 | endif |
|---|
| 298 | icloudbotn(ix,jy,n,l)=icmv |
|---|
| 299 | icloudtop=icmv ! this is just a local variable |
|---|
| 300 | rhmin=rhmininit |
|---|
| 301 | lsearch=.true. |
|---|
| 302 | |
|---|
| 303 | cloudsearch_loop: & |
|---|
| 304 | do while (rhmin .ge. rhminx .and. lsearch) |
|---|
| 305 | ! give up for < rhminx |
|---|
| 306 | |
|---|
| 307 | kz_loop: & |
|---|
| 308 | do kz_inv=1,nz-1 |
|---|
| 309 | kz=nz-kz_inv+1 |
|---|
| 310 | pressure=rhon(ix,jy,kz,n,l)*r_air*ttn(ix,jy,kz,n,l) |
|---|
| 311 | rh=qvn(ix,jy,kz,n,l)/f_qvsat(pressure,ttn(ix,jy,kz,n,l)) |
|---|
| 312 | if (rh .gt. rhmin) then |
|---|
| 313 | if (icloudbotn(ix,jy,n,l) .eq. icmv) then |
|---|
| 314 | icloudtop=nint(height(kz)) ! use int to save memory |
|---|
| 315 | endif |
|---|
| 316 | icloudbotn(ix,jy,n,l)=nint(height(kz)) |
|---|
| 317 | endif |
|---|
| 318 | end do kz_loop |
|---|
| 319 | |
|---|
| 320 | ! PS try to get a cloud thicker than 50 m |
|---|
| 321 | ! PS if there is at least precmin mm/h |
|---|
| 322 | if (prec .gt. precmin .and. & |
|---|
| 323 | ( icloudbotn(ix,jy,n,l) .eq. icmv .or. & |
|---|
| 324 | icloudtop-icloudbotn(ix,jy,n,l) .lt. 50)) then |
|---|
| 325 | rhmin = rhmin - 0.05 |
|---|
| 326 | else |
|---|
| 327 | lsearch = .false. |
|---|
| 328 | endif |
|---|
| 329 | |
|---|
| 330 | enddo cloudsearch_loop |
|---|
| 331 | |
|---|
| 332 | ! PS implement a rough fix for badly represented convection |
|---|
| 333 | ! PS is based on looking at a limited set of comparison data |
|---|
| 334 | if (lconvectprec .and. icloudtop .lt. icloudtopconvmin .or. & |
|---|
| 335 | icloudbotn(ix,jy,n,l) .lt. icloudtopmin .and. prec .gt. precmin) then |
|---|
| 336 | if (convp .lt. 0.1) then |
|---|
| 337 | icloudbotn(ix,jy,n,l) = icloudbot1 |
|---|
| 338 | icloudtop = icloudtop1 |
|---|
| 339 | else |
|---|
| 340 | icloudbotn(ix,jy,n,l) = icloudbot2 |
|---|
| 341 | icloudtop = icloudtop2 |
|---|
| 342 | endif |
|---|
| 343 | endif |
|---|
| 344 | if (icloudtop .ne. icmv) then |
|---|
| 345 | icloudthckn(ix,jy,n,l) = icloudtop-icloudbotn(ix,jy,n,l) |
|---|
| 346 | else |
|---|
| 347 | icloudthckn(ix,jy,n,l) = icmv |
|---|
| 348 | endif |
|---|
| 349 | ! PS get rid of too thin clouds |
|---|
| 350 | if (icloudthck(ix,jy,n) .lt. 50) then |
|---|
| 351 | icloudbotn(ix,jy,n,l)=icmv |
|---|
| 352 | icloudthckn(ix,jy,n,l)=icmv |
|---|
| 353 | endif |
|---|
| 354 | |
|---|
| 355 | enddo |
|---|
| 356 | enddo jy_loop |
|---|
| 357 | |
|---|
| 358 | enddo numbnest_loop |
|---|
| 359 | |
|---|
| 360 | end subroutine verttransform_nests |
|---|
