--- trunk/Sources/phylmd/coefkz.f 2017/11/07 10:52:46 233 +++ trunk/phylmd/Interface_surf/coefkz.f 2018/07/24 16:27:12 288 @@ -4,17 +4,17 @@ contains - SUBROUTINE coefkz(nsrf, paprs, pplay, ksta, ksta_ter, ts, rugos, u, v, t, & - q, qsurf, coefm, coefh, ycdragm, ycdragh) + SUBROUTINE coefkz(nsrf, paprs, pplay, ts, u, v, t, q, zgeop, coefm, coefh) ! Authors: F. Hourdin, M. Forichon, Z. X. Li (LMD/CNRS) ! Date: September 22nd, 1993 - ! Objet : calculer le coefficient de frottement du sol ("Cdrag") et les - ! coefficients d'échange turbulent dans l'atmosphère. - use clcdrag_m, only: clcdrag + ! Objet : calculer les coefficients d'échange turbulent dans + ! l'atmosphère. + + USE clesphys, ONLY: ksta, ksta_ter USE conf_phys_m, ONLY: iflag_pbl - USE dimphy, ONLY: klev, klon + USE dimphy, ONLY: klev USE fcttre, ONLY: foede, foeew USE indicesol, ONLY: is_oce USE suphec_m, ONLY: rcpd, rd, retv, rg, rkappa, rlstt, rlvtt, rtt @@ -22,212 +22,119 @@ integer, intent(in):: nsrf ! indicateur de la nature du sol - REAL, intent(in):: paprs(:, :) ! (klon, klev+1) + REAL, intent(in):: paprs(:, :) ! (knon, klev + 1) ! pression a chaque intercouche (en Pa) - real, intent(in):: pplay(:, :) ! (klon, klev) + real, intent(in):: pplay(:, :) ! (knon, klev) ! pression au milieu de chaque couche (en Pa) - REAL, intent(in):: ksta, ksta_ter REAL, intent(in):: ts(:) ! (knon) temperature du sol (en Kelvin) - REAL, intent(in):: rugos(:) ! (klon) longeur de rugosite (en m) - REAL, intent(in):: u(:, :), v(:, :) ! (klon, klev) wind - REAL, intent(in):: t(:, :) ! (klon, klev) temperature (K) - real, intent(in):: q(:, :) ! (klon, klev) vapeur d'eau (kg/kg) - real, intent(in):: qsurf(:) ! (knon) + REAL, intent(in):: u(:, :), v(:, :) ! (knon, klev) wind + REAL, intent(in):: t(:, :) ! (knon, klev) temperature (K) + real, intent(in):: q(:, :) ! (knon, klev) vapeur d'eau (kg/kg) + REAL, intent(in):: zgeop(:, :) ! (knon, klev) REAL, intent(out):: coefm(:, 2:) ! (knon, 2:klev) coefficient, vitesse - real, intent(out):: coefh(:, 2:) ! (knon, 2:klev) + real, intent(out):: coefh(:, 2:) ! (knon, 2:klev) ! coefficient, chaleur et humidité - real, intent(out):: ycdragm(:), ycdragh(:) ! (knon) - ! Local: INTEGER knon ! nombre de points a traiter - INTEGER itop(size(coefm, 1)) ! (knon) numero de couche du sommet - ! de la couche limite + + INTEGER itop(size(ts)) ! (knon) + ! numero de couche du sommet de la couche limite ! Quelques constantes et options: REAL, PARAMETER:: cepdu2 =0.1**2 - REAL, PARAMETER:: CKAP = 0.4 - REAL, PARAMETER:: cb = 5. - REAL, PARAMETER:: cc = 5. - REAL, PARAMETER:: cd = 5. - REAL, PARAMETER:: clam = 160. REAL, PARAMETER:: ratqs = 0.05 ! largeur de distribution de vapeur d'eau - - LOGICAL, PARAMETER:: richum = .TRUE. - ! utilise le nombre de Richardson humide - REAL, PARAMETER:: ric = 0.4 ! nombre de Richardson critique REAL, PARAMETER:: prandtl = 0.4 REAL kstable ! diffusion minimale (situation stable) REAL, PARAMETER:: mixlen = 35. ! constante contrôlant longueur de mélange INTEGER, PARAMETER:: isommet = klev ! sommet de la couche limite - - LOGICAL, PARAMETER:: tvirtu = .TRUE. - ! calculer Ri d'une maniere plus performante - - LOGICAL, PARAMETER:: opt_ec = .FALSE. - ! formule du Centre Europeen dans l'atmosphere - INTEGER i, k - REAL zgeop(klon, klev) - REAL zmgeom(klon) - REAL ri(klon) - REAL l2(klon) - - REAL u1(klon), v1(klon), t1(klon), q1(klon), z1(klon) - + REAL zmgeom(size(ts)) + REAL ri(size(ts)) + REAL l2(size(ts)) REAL zdphi, zdu2, ztvd, ztvu, cdn - REAL scf REAL zt, zq, zcvm5, zcor, zqs, zfr, zdqs logical zdelta - REAL z2geomf, zalh2, alm2, zscfh, scfm REAL gamt(2:klev) ! contre-gradient pour la chaleur sensible: Kelvin/metre !-------------------------------------------------------------------- - knon = size(coefm, 1) + knon = size(ts) ! Prescrire la valeur de contre-gradient - if (iflag_pbl.eq.1) then + if (iflag_pbl == 1) then DO k = 3, klev - gamt(k) = -1.0E-03 + gamt(k) = - 1E-3 ENDDO - gamt(2) = -2.5E-03 + gamt(2) = - 2.5E-3 else DO k = 2, klev gamt(k) = 0.0 ENDDO ENDIF - IF ( nsrf .NE. is_oce ) THEN - kstable = ksta_ter - ELSE - kstable = ksta - ENDIF - - ! Calculer les géopotentiels de chaque couche - DO i = 1, knon - zgeop(i, 1) = RD * t(i, 1) / (0.5 * (paprs(i, 1) + pplay(i, 1))) & - * (paprs(i, 1) - pplay(i, 1)) - ENDDO - DO k = 2, klev - DO i = 1, knon - zgeop(i, k) = zgeop(i, k-1) & - + RD * 0.5*(t(i, k-1)+t(i, k)) / paprs(i, k) & - * (pplay(i, k-1)-pplay(i, k)) - ENDDO - ENDDO - - ! Calculer le frottement au sol (Cdrag) - - DO i = 1, knon - u1(i) = u(i, 1) - v1(i) = v(i, 1) - t1(i) = t(i, 1) - q1(i) = q(i, 1) - z1(i) = zgeop(i, 1) - ENDDO - - CALL clcdrag(nsrf, u1, v1, t1, q1, z1, ts, qsurf, rugos, ycdragm, ycdragh) + kstable = merge(ksta, ksta_ter, nsrf == is_oce) ! Calculer les coefficients turbulents dans l'atmosphere itop = isommet - loop_vertical: DO k = 2, isommet - loop_horiz: DO i = 1, knon - zdu2 = MAX(cepdu2, (u(i, k)-u(i, k-1))**2 & - +(v(i, k)-v(i, k-1))**2) - zmgeom(i) = zgeop(i, k)-zgeop(i, k-1) - zdphi =zmgeom(i) / 2.0 - zt = (t(i, k)+t(i, k-1)) * 0.5 - zq = (q(i, k)+q(i, k-1)) * 0.5 + DO k = 2, isommet + DO i = 1, knon + zdu2 = MAX(cepdu2, (u(i, k) - u(i, k - 1))**2 & + + (v(i, k) - v(i, k - 1))**2) + zmgeom(i) = zgeop(i, k) - zgeop(i, k - 1) + zdphi = zmgeom(i) / 2.0 + zt = (t(i, k) + t(i, k - 1)) * 0.5 + zq = (q(i, k) + q(i, k - 1)) * 0.5 ! calculer Qs et dQs/dT: - zdelta = RTT >=zt zcvm5 = merge(R5IES * RLSTT, R5LES * RLVTT, zdelta) / RCPD & - / (1. + RVTMP2*zq) + / (1. + RVTMP2 * zq) zqs = R2ES * FOEEW(zt, zdelta) / pplay(i, k) zqs = MIN(0.5, zqs) - zcor = 1./(1.-RETV*zqs) - zqs = zqs*zcor + zcor = 1./(1. - RETV * zqs) + zqs = zqs * zcor zdqs = FOEDE(zt, zdelta, zcvm5, zqs, zcor) ! calculer la fraction nuageuse (processus humide): - - zfr = (zq+ratqs*zq-zqs) / (2.0*ratqs*zq) + zfr = (zq + ratqs * zq - zqs) / (2.0 * ratqs * zq) zfr = MAX(0.0, MIN(1.0, zfr)) - IF (.NOT.richum) zfr = 0.0 - ! calculer le nombre de Richardson: - - IF (tvirtu) THEN - ztvd =( t(i, k) & - + zdphi/RCPD/(1.+RVTMP2*zq) & - *( (1.-zfr) + zfr*(1.+RLVTT*zqs/RD/zt)/(1.+zdqs) ) & - )*(1.+RETV*q(i, k)) - ztvu =( t(i, k-1) & - - zdphi/RCPD/(1.+RVTMP2*zq) & - *( (1.-zfr) + zfr*(1.+RLVTT*zqs/RD/zt)/(1.+zdqs) ) & - )*(1.+RETV*q(i, k-1)) - ri(i) =zmgeom(i)*(ztvd-ztvu)/(zdu2*0.5*(ztvd+ztvu)) - ri(i) = ri(i) & - + zmgeom(i)*zmgeom(i)/RG*gamt(k) & - *(paprs(i, k)/101325.0)**RKAPPA & - /(zdu2*0.5*(ztvd+ztvu)) - ELSE - ! calcul de Ridchardson compatible LMD5 - ri(i) =(RCPD*(t(i, k)-t(i, k-1)) & - -RD*0.5*(t(i, k)+t(i, k-1))/paprs(i, k) & - *(pplay(i, k)-pplay(i, k-1)) & - )*zmgeom(i)/(zdu2*0.5*RCPD*(t(i, k-1)+t(i, k))) - ri(i) = ri(i) + & - zmgeom(i)*zmgeom(i)*gamt(k)/RG & - *(paprs(i, k)/101325.0)**RKAPPA & - /(zdu2*0.5*(t(i, k-1)+t(i, k))) - ENDIF + ! calculer le nombre de Richardson: + ztvd = (t(i, k) & + + zdphi/RCPD/(1. + RVTMP2 * zq) & + * ((1. - zfr) + zfr * (1. + RLVTT * zqs/RD/zt)/(1. + zdqs)) & + ) * (1. + RETV * q(i, k)) + ztvu = (t(i, k - 1) & + - zdphi/RCPD/(1. + RVTMP2 * zq) & + * ((1. - zfr) + zfr * (1. + RLVTT * zqs/RD/zt)/(1. + zdqs)) & + ) * (1. + RETV * q(i, k - 1)) + ri(i) = zmgeom(i) * (ztvd - ztvu)/(zdu2 * 0.5 * (ztvd + ztvu)) + ri(i) = ri(i) & + + zmgeom(i) * zmgeom(i)/RG * gamt(k) & + * (paprs(i, k)/101325.0)**RKAPPA & + /(zdu2 * 0.5 * (ztvd + ztvu)) ! finalement, les coefficients d'echange sont obtenus: cdn = SQRT(zdu2) / zmgeom(i) * RG - IF (opt_ec) THEN - z2geomf = zgeop(i, k-1)+zgeop(i, k) - alm2 = (0.5*ckap/RG*z2geomf & - /(1.+0.5*ckap/rg/clam*z2geomf))**2 - zalh2 = (0.5*ckap/rg*z2geomf & - /(1.+0.5*ckap/RG/(clam*SQRT(1.5*cd))*z2geomf))**2 - IF (ri(i) < 0.) THEN - ! situation instable - scf = ((zgeop(i, k)/zgeop(i, k-1))**(1./3.)-1.)**3 & - / (zmgeom(i)/RG)**3 / (zgeop(i, k-1)/RG) - scf = SQRT(-ri(i)*scf) - scfm = 1.0 / (1.0+3.0*cb*cc*alm2*scf) - zscfh = 1.0 / (1.0+3.0*cb*cc*zalh2*scf) - coefm(i, k) = cdn * alm2 * (1. - 2. * cb * ri(i) * scfm) - coefh(i, k) = cdn*zalh2*(1.-3.0*cb*ri(i)*zscfh) - ELSE - ! situation stable - scf = SQRT(1.+cd*ri(i)) - coefm(i, k) = cdn * alm2 / (1. + 2. * cb * ri(i) / scf) - coefh(i, k) = cdn*zalh2/(1.+3.0*cb*ri(i)*scf) - ENDIF - ELSE - l2(i) = (mixlen*MAX(0.0, (paprs(i, k)-paprs(i, itop(i)+1)) & - /(paprs(i, 2)-paprs(i, itop(i)+1)) ))**2 - coefm(i, k) = sqrt(max(cdn**2 * (ric - ri(i)) / ric, kstable)) - coefm(i, k)= l2(i) * coefm(i, k) - coefh(i, k) = coefm(i, k) / prandtl ! h et m different - ENDIF - ENDDO loop_horiz - ENDDO loop_vertical + l2(i) = (mixlen * MAX(0.0, (paprs(i, k) - paprs(i, itop(i) + 1)) & + /(paprs(i, 2) - paprs(i, itop(i) + 1))))**2 + coefm(i, k) = sqrt(max(cdn**2 * (ric - ri(i)) / ric, kstable)) + coefm(i, k) = l2(i) * coefm(i, k) + coefh(i, k) = coefm(i, k) / prandtl ! h et m different + ENDDO + ENDDO ! Au-delà du sommet, pas de diffusion turbulente : forall (i = 1: knon)