| 1 |
SUBROUTINE fisrtilp(dtime,paprs,pplay,t,q,ptconv,ratqs,d_t,d_q,d_ql,rneb, & |
| 2 |
radliq,rain,snow,pfrac_impa,pfrac_nucl,pfrac_1nucl,frac_impa, & |
| 3 |
frac_nucl,prfl,psfl,rhcl) |
| 4 |
|
| 5 |
! From phylmd/fisrtilp.F,v 1.2 2004/11/09 16:55:40 |
| 6 |
! Auteur(s): Z.X. Li (LMD/CNRS) |
| 7 |
! Date: le 20 mars 1995 |
| 8 |
! Objet: condensation et precipitation stratiforme. |
| 9 |
! schema de nuage |
| 10 |
|
| 11 |
USE dimens_m |
| 12 |
USE dimphy |
| 13 |
USE tracstoke |
| 14 |
USE suphec_m |
| 15 |
USE yoethf_m |
| 16 |
USE fcttre |
| 17 |
USE comfisrtilp |
| 18 |
use numer_rec_95, only: nr_erf |
| 19 |
|
| 20 |
IMPLICIT NONE |
| 21 |
|
| 22 |
! Arguments: |
| 23 |
|
| 24 |
REAL, INTENT (IN) :: & ! intervalle du temps (s) |
| 25 |
dtime |
| 26 |
REAL, INTENT (IN) :: paprs(klon,klev+1) ! pression a inter-couche |
| 27 |
REAL, INTENT (IN):: pplay(klon,klev) ! pression au milieu de couche |
| 28 |
REAL, INTENT (IN):: t(klon,klev) ! temperature (K) |
| 29 |
REAL q(klon,klev) ! humidite specifique (kg/kg) |
| 30 |
REAL d_t(klon,klev) ! incrementation de la temperature (K) |
| 31 |
REAL d_q(klon,klev) ! incrementation de la vapeur d'eau |
| 32 |
REAL d_ql(klon,klev) ! incrementation de l'eau liquide |
| 33 |
REAL rneb(klon,klev) ! fraction nuageuse |
| 34 |
REAL radliq(klon,klev) ! eau liquide utilisee dans rayonnements |
| 35 |
REAL rhcl(klon,klev) ! humidite relative en ciel clair |
| 36 |
REAL rain(klon) ! pluies (mm/s) |
| 37 |
REAL snow(klon) ! neige (mm/s) |
| 38 |
REAL prfl(klon,klev+1) ! flux d'eau precipitante aux interfaces (kg/m2/s) |
| 39 |
REAL psfl(klon,klev+1) ! flux d'eau precipitante aux interfaces (kg/m2/s) |
| 40 |
! Coeffients de fraction lessivee : pour OFF-LINE |
| 41 |
|
| 42 |
REAL pfrac_nucl(klon,klev) |
| 43 |
REAL pfrac_1nucl(klon,klev) |
| 44 |
REAL pfrac_impa(klon,klev) |
| 45 |
|
| 46 |
! Fraction d'aerosols lessivee par impaction et par nucleation |
| 47 |
! POur ON-LINE |
| 48 |
|
| 49 |
REAL frac_impa(klon,klev) |
| 50 |
REAL frac_nucl(klon,klev) |
| 51 |
REAL zct(klon), zcl(klon) |
| 52 |
!AA |
| 53 |
|
| 54 |
! Options du programme: |
| 55 |
|
| 56 |
REAL seuil_neb ! un nuage existe vraiment au-dela |
| 57 |
PARAMETER (seuil_neb=0.001) |
| 58 |
|
| 59 |
INTEGER ninter ! sous-intervals pour la precipitation |
| 60 |
PARAMETER (ninter=5) |
| 61 |
LOGICAL evap_prec ! evaporation de la pluie |
| 62 |
PARAMETER (evap_prec=.TRUE.) |
| 63 |
REAL ratqs(klon,klev) ! determine la largeur de distribution de vapeur |
| 64 |
LOGICAL ptconv(klon,klev) ! determine la largeur de distribution de vapeur |
| 65 |
REAL zpdf_sig(klon), zpdf_k(klon), zpdf_delta(klon) |
| 66 |
REAL zpdf_a(klon), zpdf_b(klon), zpdf_e1(klon), zpdf_e2(klon) |
| 67 |
|
| 68 |
LOGICAL cpartiel ! condensation partielle |
| 69 |
PARAMETER (cpartiel=.TRUE.) |
| 70 |
REAL t_coup |
| 71 |
PARAMETER (t_coup=234.0) |
| 72 |
|
| 73 |
! Variables locales: |
| 74 |
|
| 75 |
INTEGER i, k, n, kk |
| 76 |
REAL zqs(klon), zdqs(klon), zdelta, zcor, zcvm5 |
| 77 |
REAL zrfl(klon), zrfln(klon), zqev, zqevt |
| 78 |
REAL zoliq(klon), zcond(klon), zq(klon), zqn(klon), zdelq |
| 79 |
REAL ztglace, zt(klon) |
| 80 |
INTEGER nexpo ! exponentiel pour glace/eau |
| 81 |
REAL zdz(klon), zrho(klon), ztot(klon), zrhol(klon) |
| 82 |
REAL zchau(klon), zfroi(klon), zfice(klon), zneb(klon) |
| 83 |
|
| 84 |
LOGICAL appel1er |
| 85 |
SAVE appel1er |
| 86 |
|
| 87 |
!--------------------------------------------------------------- |
| 88 |
|
| 89 |
!AA Variables traceurs: |
| 90 |
!AA Provisoire !!! Parametres alpha du lessivage |
| 91 |
!AA A priori on a 4 scavenging numbers possibles |
| 92 |
|
| 93 |
REAL a_tr_sca(4) |
| 94 |
SAVE a_tr_sca |
| 95 |
|
| 96 |
! Variables intermediaires |
| 97 |
|
| 98 |
REAL zalpha_tr |
| 99 |
REAL zfrac_lessi |
| 100 |
REAL zprec_cond(klon) |
| 101 |
!AA |
| 102 |
REAL zmair, zcpair, zcpeau |
| 103 |
! Pour la conversion eau-neige |
| 104 |
REAL zlh_solid(klon), zm_solid |
| 105 |
!IM |
| 106 |
INTEGER klevm1 |
| 107 |
!--------------------------------------------------------------- |
| 108 |
|
| 109 |
! Fonctions en ligne: |
| 110 |
|
| 111 |
REAL fallvs, fallvc ! vitesse de chute pour crystaux de glace |
| 112 |
REAL zzz |
| 113 |
|
| 114 |
fallvc(zzz) = 3.29/2.0*((zzz)**0.16)*ffallv_con |
| 115 |
fallvs(zzz) = 3.29/2.0*((zzz)**0.16)*ffallv_lsc |
| 116 |
|
| 117 |
DATA appel1er/ .TRUE./ |
| 118 |
!ym |
| 119 |
zdelq = 0.0 |
| 120 |
|
| 121 |
IF (appel1er) THEN |
| 122 |
|
| 123 |
PRINT *, 'fisrtilp, ninter:', ninter |
| 124 |
PRINT *, 'fisrtilp, evap_prec:', evap_prec |
| 125 |
PRINT *, 'fisrtilp, cpartiel:', cpartiel |
| 126 |
IF (abs(dtime/float(ninter)-360.0)>0.001) THEN |
| 127 |
PRINT *, 'fisrtilp: Ce n est pas prevu, voir Z.X.Li', dtime |
| 128 |
PRINT *, 'Je prefere un sous-intervalle de 6 minutes' |
| 129 |
! stop 1 |
| 130 |
END IF |
| 131 |
appel1er = .FALSE. |
| 132 |
|
| 133 |
!AA initialiation provisoire |
| 134 |
a_tr_sca(1) = -0.5 |
| 135 |
a_tr_sca(2) = -0.5 |
| 136 |
a_tr_sca(3) = -0.5 |
| 137 |
a_tr_sca(4) = -0.5 |
| 138 |
|
| 139 |
!AA Initialisation a 1 des coefs des fractions lessivees |
| 140 |
|
| 141 |
DO k = 1, klev |
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DO i = 1, klon |
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pfrac_nucl(i,k) = 1. |
| 144 |
pfrac_1nucl(i,k) = 1. |
| 145 |
pfrac_impa(i,k) = 1. |
| 146 |
END DO |
| 147 |
END DO |
| 148 |
|
| 149 |
|
| 150 |
END IF ! test sur appel1er |
| 151 |
!MAf Initialisation a 0 de zoliq |
| 152 |
DO i = 1, klon |
| 153 |
zoliq(i) = 0. |
| 154 |
END DO |
| 155 |
! Determiner les nuages froids par leur temperature |
| 156 |
! nexpo regle la raideur de la transition eau liquide / eau glace. |
| 157 |
|
| 158 |
ztglace = rtt - 15.0 |
| 159 |
nexpo = 6 |
| 160 |
!cc nexpo = 1 |
| 161 |
|
| 162 |
! Initialiser les sorties: |
| 163 |
|
| 164 |
DO k = 1, klev + 1 |
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DO i = 1, klon |
| 166 |
prfl(i,k) = 0.0 |
| 167 |
psfl(i,k) = 0.0 |
| 168 |
END DO |
| 169 |
END DO |
| 170 |
|
| 171 |
DO k = 1, klev |
| 172 |
DO i = 1, klon |
| 173 |
d_t(i,k) = 0.0 |
| 174 |
d_q(i,k) = 0.0 |
| 175 |
d_ql(i,k) = 0.0 |
| 176 |
rneb(i,k) = 0.0 |
| 177 |
radliq(i,k) = 0.0 |
| 178 |
frac_nucl(i,k) = 1. |
| 179 |
frac_impa(i,k) = 1. |
| 180 |
END DO |
| 181 |
END DO |
| 182 |
DO i = 1, klon |
| 183 |
rain(i) = 0.0 |
| 184 |
snow(i) = 0.0 |
| 185 |
END DO |
| 186 |
|
| 187 |
! Initialiser le flux de precipitation a zero |
| 188 |
|
| 189 |
DO i = 1, klon |
| 190 |
zrfl(i) = 0.0 |
| 191 |
zneb(i) = seuil_neb |
| 192 |
END DO |
| 193 |
|
| 194 |
|
| 195 |
!AA Pour plus de securite |
| 196 |
|
| 197 |
zalpha_tr = 0. |
| 198 |
zfrac_lessi = 0. |
| 199 |
|
| 200 |
!AA---------------------------------------------------------- |
| 201 |
|
| 202 |
! Boucle verticale (du haut vers le bas) |
| 203 |
|
| 204 |
!IM : klevm1 |
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klevm1 = klev - 1 |
| 206 |
DO k = klev, 1, -1 |
| 207 |
|
| 208 |
!AA---------------------------------------------------------- |
| 209 |
|
| 210 |
DO i = 1, klon |
| 211 |
zt(i) = t(i,k) |
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zq(i) = q(i,k) |
| 213 |
END DO |
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|
| 215 |
! Calculer la varition de temp. de l'air du a la chaleur sensible |
| 216 |
! transporter par la pluie. |
| 217 |
! Il resterait a rajouter cet effet de la chaleur sensible sur les |
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! flux de surface, du a la diff. de temp. entre le 1er niveau et la |
| 219 |
! surface. |
| 220 |
|
| 221 |
DO i = 1, klon |
| 222 |
IF (k<=klevm1) THEN |
| 223 |
zmair = (paprs(i,k)-paprs(i,k+1))/rg |
| 224 |
zcpair = rcpd*(1.0+rvtmp2*zq(i)) |
| 225 |
zcpeau = rcpd*rvtmp2 |
| 226 |
zt(i) = ((t(i,k+1)+d_t(i,k+1))*zrfl(i)*dtime*zcpeau+zmair*zcpair* & |
| 227 |
zt(i))/(zmair*zcpair+zrfl(i)*dtime*zcpeau) |
| 228 |
!C WRITE (6,*) 'cppluie ', zt(i)-(t(i,k+1)+d_t(i,k+1)) |
| 229 |
END IF |
| 230 |
END DO |
| 231 |
|
| 232 |
! Calculer l'evaporation de la precipitation |
| 233 |
|
| 234 |
|
| 235 |
|
| 236 |
IF (evap_prec) THEN |
| 237 |
DO i = 1, klon |
| 238 |
IF (zrfl(i)>0.) THEN |
| 239 |
IF (thermcep) THEN |
| 240 |
zdelta = max(0.,sign(1.,rtt-zt(i))) |
| 241 |
zqs(i) = r2es*foeew(zt(i),zdelta)/pplay(i,k) |
| 242 |
zqs(i) = min(0.5,zqs(i)) |
| 243 |
zcor = 1./(1.-retv*zqs(i)) |
| 244 |
zqs(i) = zqs(i)*zcor |
| 245 |
ELSE |
| 246 |
IF (zt(i)<t_coup) THEN |
| 247 |
zqs(i) = qsats(zt(i))/pplay(i,k) |
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ELSE |
| 249 |
zqs(i) = qsatl(zt(i))/pplay(i,k) |
| 250 |
END IF |
| 251 |
END IF |
| 252 |
zqev = max(0.0,(zqs(i)-zq(i))*zneb(i)) |
| 253 |
zqevt = coef_eva*(1.0-zq(i)/zqs(i))*sqrt(zrfl(i))* & |
| 254 |
(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*rd/rg |
| 255 |
zqevt = max(0.0,min(zqevt,zrfl(i)))*rg*dtime/ & |
| 256 |
(paprs(i,k)-paprs(i,k+1)) |
| 257 |
zqev = min(zqev,zqevt) |
| 258 |
zrfln(i) = zrfl(i) - zqev*(paprs(i,k)-paprs(i,k+1))/rg/dtime |
| 259 |
|
| 260 |
! pour la glace, on réévapore toute la précip dans la couche du dessous |
| 261 |
! la glace venant de la couche du dessus est simplement dans la couche |
| 262 |
! du dessous. |
| 263 |
|
| 264 |
IF (zt(i)<t_coup .AND. reevap_ice) zrfln(i) = 0. |
| 265 |
|
| 266 |
zq(i) = zq(i) - (zrfln(i)-zrfl(i))*(rg/(paprs(i,k)-paprs(i, & |
| 267 |
k+1)))*dtime |
| 268 |
zt(i) = zt(i) + (zrfln(i)-zrfl(i))*(rg/(paprs(i,k)-paprs(i, & |
| 269 |
k+1)))*dtime*rlvtt/rcpd/(1.0+rvtmp2*zq(i)) |
| 270 |
zrfl(i) = zrfln(i) |
| 271 |
END IF |
| 272 |
END DO |
| 273 |
END IF |
| 274 |
|
| 275 |
! Calculer Qs et L/Cp*dQs/dT: |
| 276 |
|
| 277 |
IF (thermcep) THEN |
| 278 |
DO i = 1, klon |
| 279 |
zdelta = max(0.,sign(1.,rtt-zt(i))) |
| 280 |
zcvm5 = r5les*rlvtt*(1.-zdelta) + r5ies*rlstt*zdelta |
| 281 |
zcvm5 = zcvm5/rcpd/(1.0+rvtmp2*zq(i)) |
| 282 |
zqs(i) = r2es*foeew(zt(i),zdelta)/pplay(i,k) |
| 283 |
zqs(i) = min(0.5,zqs(i)) |
| 284 |
zcor = 1./(1.-retv*zqs(i)) |
| 285 |
zqs(i) = zqs(i)*zcor |
| 286 |
zdqs(i) = foede(zt(i),zdelta,zcvm5,zqs(i),zcor) |
| 287 |
END DO |
| 288 |
ELSE |
| 289 |
DO i = 1, klon |
| 290 |
IF (zt(i)<t_coup) THEN |
| 291 |
zqs(i) = qsats(zt(i))/pplay(i,k) |
| 292 |
zdqs(i) = dqsats(zt(i),zqs(i)) |
| 293 |
ELSE |
| 294 |
zqs(i) = qsatl(zt(i))/pplay(i,k) |
| 295 |
zdqs(i) = dqsatl(zt(i),zqs(i)) |
| 296 |
END IF |
| 297 |
END DO |
| 298 |
END IF |
| 299 |
|
| 300 |
! Determiner la condensation partielle et calculer la quantite |
| 301 |
! de l'eau condensee: |
| 302 |
|
| 303 |
IF (cpartiel) THEN |
| 304 |
|
| 305 |
! print*,'Dans partiel k=',k |
| 306 |
|
| 307 |
! Calcul de l'eau condensee et de la fraction nuageuse et de l'eau |
| 308 |
! nuageuse a partir des PDF de Sandrine Bony. |
| 309 |
! rneb : fraction nuageuse |
| 310 |
! zqn : eau totale dans le nuage |
| 311 |
! zcond : eau condensee moyenne dans la maille. |
| 312 |
! on prend en compte le réchauffement qui diminue la partie condensee |
| 313 |
|
| 314 |
! Version avec les raqts |
| 315 |
|
| 316 |
IF (iflag_pdf==0) THEN |
| 317 |
|
| 318 |
DO i = 1, klon |
| 319 |
zdelq = min(ratqs(i,k),0.99)*zq(i) |
| 320 |
rneb(i,k) = (zq(i)+zdelq-zqs(i))/(2.0*zdelq) |
| 321 |
zqn(i) = (zq(i)+zdelq+zqs(i))/2.0 |
| 322 |
END DO |
| 323 |
|
| 324 |
ELSE |
| 325 |
|
| 326 |
! Version avec les nouvelles PDFs. |
| 327 |
DO i = 1, klon |
| 328 |
IF (zq(i)<1.E-15) THEN |
| 329 |
!C Lionel GUEZ print*,'ZQ(',i,',',k,')=',zq(i) |
| 330 |
zq(i) = 1.E-15 |
| 331 |
END IF |
| 332 |
END DO |
| 333 |
DO i = 1, klon |
| 334 |
zpdf_sig(i) = ratqs(i,k)*zq(i) |
| 335 |
zpdf_k(i) = -sqrt(log(1.+(zpdf_sig(i)/zq(i))**2)) |
| 336 |
zpdf_delta(i) = log(zq(i)/zqs(i)) |
| 337 |
zpdf_a(i) = zpdf_delta(i)/(zpdf_k(i)*sqrt(2.)) |
| 338 |
zpdf_b(i) = zpdf_k(i)/(2.*sqrt(2.)) |
| 339 |
zpdf_e1(i) = zpdf_a(i) - zpdf_b(i) |
| 340 |
zpdf_e1(i) = sign(min(abs(zpdf_e1(i)),5.),zpdf_e1(i)) |
| 341 |
zpdf_e1(i) = 1. - nr_erf(zpdf_e1(i)) |
| 342 |
zpdf_e2(i) = zpdf_a(i) + zpdf_b(i) |
| 343 |
zpdf_e2(i) = sign(min(abs(zpdf_e2(i)),5.),zpdf_e2(i)) |
| 344 |
zpdf_e2(i) = 1. - nr_erf(zpdf_e2(i)) |
| 345 |
IF (zpdf_e1(i)<1.E-10) THEN |
| 346 |
rneb(i,k) = 0. |
| 347 |
zqn(i) = zqs(i) |
| 348 |
ELSE |
| 349 |
rneb(i,k) = 0.5*zpdf_e1(i) |
| 350 |
zqn(i) = zq(i)*zpdf_e2(i)/zpdf_e1(i) |
| 351 |
END IF |
| 352 |
|
| 353 |
END DO |
| 354 |
|
| 355 |
|
| 356 |
END IF |
| 357 |
! iflag_pdf |
| 358 |
DO i = 1, klon |
| 359 |
IF (rneb(i,k)<=0.0) zqn(i) = 0.0 |
| 360 |
IF (rneb(i,k)>=1.0) zqn(i) = zq(i) |
| 361 |
rneb(i,k) = max(0.0,min(1.0,rneb(i,k))) |
| 362 |
! zcond(i) = MAX(0.0,zqn(i)-zqs(i))*rneb(i,k)/(1.+zdqs(i)) |
| 363 |
! On ne divise pas par 1+zdqs pour forcer a avoir l'eau predite par |
| 364 |
! la convection. |
| 365 |
! ATTENTION !!! Il va falloir verifier tout ca. |
| 366 |
zcond(i) = max(0.0,zqn(i)-zqs(i))*rneb(i,k) |
| 367 |
! print*,'ZDQS ',zdqs(i) |
| 368 |
!--Olivier |
| 369 |
rhcl(i,k) = (zqs(i)+zq(i)-zdelq)/2./zqs(i) |
| 370 |
IF (rneb(i,k)<=0.0) rhcl(i,k) = zq(i)/zqs(i) |
| 371 |
IF (rneb(i,k)>=1.0) rhcl(i,k) = 1.0 |
| 372 |
!--fin |
| 373 |
END DO |
| 374 |
ELSE |
| 375 |
DO i = 1, klon |
| 376 |
IF (zq(i)>zqs(i)) THEN |
| 377 |
rneb(i,k) = 1.0 |
| 378 |
ELSE |
| 379 |
rneb(i,k) = 0.0 |
| 380 |
END IF |
| 381 |
zcond(i) = max(0.0,zq(i)-zqs(i))/(1.+zdqs(i)) |
| 382 |
END DO |
| 383 |
END IF |
| 384 |
|
| 385 |
DO i = 1, klon |
| 386 |
zq(i) = zq(i) - zcond(i) |
| 387 |
! zt(i) = zt(i) + zcond(i) * RLVTT/RCPD |
| 388 |
zt(i) = zt(i) + zcond(i)*rlvtt/rcpd/(1.0+rvtmp2*zq(i)) |
| 389 |
END DO |
| 390 |
|
| 391 |
! Partager l'eau condensee en precipitation et eau liquide nuageuse |
| 392 |
|
| 393 |
DO i = 1, klon |
| 394 |
IF (rneb(i,k)>0.0) THEN |
| 395 |
zoliq(i) = zcond(i) |
| 396 |
zrho(i) = pplay(i,k)/zt(i)/rd |
| 397 |
zdz(i) = (paprs(i,k)-paprs(i,k+1))/(zrho(i)*rg) |
| 398 |
zfice(i) = 1.0 - (zt(i)-ztglace)/(273.13-ztglace) |
| 399 |
zfice(i) = min(max(zfice(i),0.0),1.0) |
| 400 |
zfice(i) = zfice(i)**nexpo |
| 401 |
zneb(i) = max(rneb(i,k),seuil_neb) |
| 402 |
radliq(i,k) = zoliq(i)/float(ninter+1) |
| 403 |
END IF |
| 404 |
END DO |
| 405 |
|
| 406 |
DO n = 1, ninter |
| 407 |
DO i = 1, klon |
| 408 |
IF (rneb(i,k)>0.0) THEN |
| 409 |
zrhol(i) = zrho(i)*zoliq(i)/zneb(i) |
| 410 |
|
| 411 |
IF (ptconv(i,k)) THEN |
| 412 |
zcl(i) = cld_lc_con |
| 413 |
zct(i) = 1./cld_tau_con |
| 414 |
ELSE |
| 415 |
zcl(i) = cld_lc_lsc |
| 416 |
zct(i) = 1./cld_tau_lsc |
| 417 |
END IF |
| 418 |
! quantité d'eau à élminier. |
| 419 |
zchau(i) = zct(i)*dtime/float(ninter)*zoliq(i)* & |
| 420 |
(1.0-exp(-(zoliq(i)/zneb(i)/zcl(i))**2))*(1.-zfice(i)) |
| 421 |
! meme chose pour la glace. |
| 422 |
IF (ptconv(i,k)) THEN |
| 423 |
zfroi(i) = dtime/float(ninter)/zdz(i)*zoliq(i)* & |
| 424 |
fallvc(zrhol(i))*zfice(i) |
| 425 |
ELSE |
| 426 |
zfroi(i) = dtime/float(ninter)/zdz(i)*zoliq(i)* & |
| 427 |
fallvs(zrhol(i))*zfice(i) |
| 428 |
END IF |
| 429 |
ztot(i) = zchau(i) + zfroi(i) |
| 430 |
IF (zneb(i)==seuil_neb) ztot(i) = 0.0 |
| 431 |
ztot(i) = min(max(ztot(i),0.0),zoliq(i)) |
| 432 |
zoliq(i) = max(zoliq(i)-ztot(i),0.0) |
| 433 |
radliq(i,k) = radliq(i,k) + zoliq(i)/float(ninter+1) |
| 434 |
END IF |
| 435 |
END DO |
| 436 |
END DO |
| 437 |
|
| 438 |
DO i = 1, klon |
| 439 |
IF (rneb(i,k)>0.0) THEN |
| 440 |
d_ql(i,k) = zoliq(i) |
| 441 |
zrfl(i) = zrfl(i) + max(zcond(i)-zoliq(i),0.0)*(paprs(i,k)-paprs(i & |
| 442 |
,k+1))/(rg*dtime) |
| 443 |
END IF |
| 444 |
IF (zt(i)<rtt) THEN |
| 445 |
psfl(i,k) = zrfl(i) |
| 446 |
ELSE |
| 447 |
prfl(i,k) = zrfl(i) |
| 448 |
END IF |
| 449 |
END DO |
| 450 |
|
| 451 |
! Calculer les tendances de q et de t: |
| 452 |
|
| 453 |
DO i = 1, klon |
| 454 |
d_q(i,k) = zq(i) - q(i,k) |
| 455 |
d_t(i,k) = zt(i) - t(i,k) |
| 456 |
END DO |
| 457 |
|
| 458 |
!AA--------------- Calcul du lessivage stratiforme ------------- |
| 459 |
|
| 460 |
DO i = 1, klon |
| 461 |
zprec_cond(i) = max(zcond(i)-zoliq(i),0.0)* & |
| 462 |
(paprs(i,k)-paprs(i,k+1))/rg |
| 463 |
IF (rneb(i,k)>0.0 .AND. zprec_cond(i)>0.) THEN |
| 464 |
!AA lessivage nucleation LMD5 dans la couche elle-meme |
| 465 |
IF (t(i,k)>=ztglace) THEN |
| 466 |
zalpha_tr = a_tr_sca(3) |
| 467 |
ELSE |
| 468 |
zalpha_tr = a_tr_sca(4) |
| 469 |
END IF |
| 470 |
zfrac_lessi = 1. - exp(zalpha_tr*zprec_cond(i)/zneb(i)) |
| 471 |
pfrac_nucl(i,k) = pfrac_nucl(i,k)*(1.-zneb(i)*zfrac_lessi) |
| 472 |
frac_nucl(i,k) = 1. - zneb(i)*zfrac_lessi |
| 473 |
|
| 474 |
! nucleation avec un facteur -1 au lieu de -0.5 |
| 475 |
zfrac_lessi = 1. - exp(-zprec_cond(i)/zneb(i)) |
| 476 |
pfrac_1nucl(i,k) = pfrac_1nucl(i,k)*(1.-zneb(i)*zfrac_lessi) |
| 477 |
END IF |
| 478 |
|
| 479 |
|
| 480 |
END DO |
| 481 |
!AA Lessivage par impaction dans les couches en-dessous |
| 482 |
! boucle sur i |
| 483 |
DO kk = k - 1, 1, -1 |
| 484 |
DO i = 1, klon |
| 485 |
IF (rneb(i,k)>0.0 .AND. zprec_cond(i)>0.) THEN |
| 486 |
IF (t(i,kk)>=ztglace) THEN |
| 487 |
zalpha_tr = a_tr_sca(1) |
| 488 |
ELSE |
| 489 |
zalpha_tr = a_tr_sca(2) |
| 490 |
END IF |
| 491 |
zfrac_lessi = 1. - exp(zalpha_tr*zprec_cond(i)/zneb(i)) |
| 492 |
pfrac_impa(i,kk) = pfrac_impa(i,kk)*(1.-zneb(i)*zfrac_lessi) |
| 493 |
frac_impa(i,kk) = 1. - zneb(i)*zfrac_lessi |
| 494 |
END IF |
| 495 |
END DO |
| 496 |
END DO |
| 497 |
|
| 498 |
!AA---------------------------------------------------------- |
| 499 |
! FIN DE BOUCLE SUR K |
| 500 |
end DO |
| 501 |
|
| 502 |
!AA----------------------------------------------------------- |
| 503 |
|
| 504 |
! Pluie ou neige au sol selon la temperature de la 1ere couche |
| 505 |
|
| 506 |
DO i = 1, klon |
| 507 |
IF ((t(i,1)+d_t(i,1))<rtt) THEN |
| 508 |
snow(i) = zrfl(i) |
| 509 |
zlh_solid(i) = rlstt - rlvtt |
| 510 |
ELSE |
| 511 |
rain(i) = zrfl(i) |
| 512 |
zlh_solid(i) = 0. |
| 513 |
END IF |
| 514 |
END DO |
| 515 |
|
| 516 |
! For energy conservation : when snow is present, the solification |
| 517 |
! latent heat is considered. |
| 518 |
DO k = 1, klev |
| 519 |
DO i = 1, klon |
| 520 |
zcpair = rcpd*(1.0+rvtmp2*(q(i,k)+d_q(i,k))) |
| 521 |
zmair = (paprs(i,k)-paprs(i,k+1))/rg |
| 522 |
zm_solid = (prfl(i,k)-prfl(i,k+1)+psfl(i,k)-psfl(i,k+1))*dtime |
| 523 |
d_t(i,k) = d_t(i,k) + zlh_solid(i)*zm_solid/(zcpair*zmair) |
| 524 |
END DO |
| 525 |
END DO |
| 526 |
|
| 527 |
END SUBROUTINE fisrtilp |
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