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contains |
contains |
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SUBROUTINE coefkz(nsrf, paprs, pplay, ksta, ksta_ter, ts, rugos, u, v, t, & |
SUBROUTINE coefkz(nsrf, paprs, pplay, ts, u, v, t, q, zgeop, coefm, coefh) |
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q, qsurf, coefm, coefh) |
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! Authors: F. Hourdin, M. Forichon, Z. X. Li (LMD/CNRS) |
! Authors: F. Hourdin, M. Forichon, Z. X. Li (LMD/CNRS) |
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! Date: September 22nd, 1993 |
! Date: September 22nd, 1993 |
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! Objet : calculer le coefficient de frottement du sol ("Cdrag") et les |
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! coefficients d'échange turbulent dans l'atmosphère. |
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use clcdrag_m, only: clcdrag |
! Objet : calculer les coefficients d'échange turbulent dans |
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! l'atmosphère. |
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USE clesphys, ONLY: ksta, ksta_ter |
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USE conf_phys_m, ONLY: iflag_pbl |
USE conf_phys_m, ONLY: iflag_pbl |
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USE dimphy, ONLY: klev, klon |
USE dimphy, ONLY: klev |
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USE fcttre, ONLY: foede, foeew |
USE fcttre, ONLY: foede, foeew |
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USE indicesol, ONLY: is_oce |
USE indicesol, ONLY: is_oce |
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USE suphec_m, ONLY: rcpd, rd, retv, rg, rkappa, rlstt, rlvtt, rtt |
USE suphec_m, ONLY: rcpd, rd, retv, rg, rkappa, rlstt, rlvtt, rtt |
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integer, intent(in):: nsrf ! indicateur de la nature du sol |
integer, intent(in):: nsrf ! indicateur de la nature du sol |
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REAL, intent(in):: paprs(:, :) ! (klon, klev+1) |
REAL, intent(in):: paprs(:, :) ! (knon, klev + 1) |
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! pression a chaque intercouche (en Pa) |
! pression a chaque intercouche (en Pa) |
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real, intent(in):: pplay(:, :) ! (klon, klev) |
real, intent(in):: pplay(:, :) ! (knon, klev) |
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! pression au milieu de chaque couche (en Pa) |
! pression au milieu de chaque couche (en Pa) |
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REAL, intent(in):: ksta, ksta_ter |
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REAL, intent(in):: ts(:) ! (knon) temperature du sol (en Kelvin) |
REAL, intent(in):: ts(:) ! (knon) temperature du sol (en Kelvin) |
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REAL, intent(in):: rugos(:) ! (klon) longeur de rugosite (en m) |
REAL, intent(in):: u(:, :), v(:, :) ! (knon, klev) wind |
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REAL, intent(in):: u(:, :), v(:, :) ! (klon, klev) wind |
REAL, intent(in):: t(:, :) ! (knon, klev) temperature (K) |
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REAL, intent(in):: t(:, :) ! (klon, klev) temperature (K) |
real, intent(in):: q(:, :) ! (knon, klev) vapeur d'eau (kg/kg) |
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real, intent(in):: q(:, :) ! (klon, klev) vapeur d'eau (kg/kg) |
REAL, intent(in):: zgeop(:, :) ! (knon, klev) |
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real, intent(in):: qsurf(:) ! (knon) |
REAL, intent(out):: coefm(:, 2:) ! (knon, 2:klev) coefficient, vitesse |
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REAL, intent(out):: coefm(:, :) ! (knon, klev) coefficient, vitesse |
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real, intent(out):: coefh(:, :) ! (knon, klev) |
real, intent(out):: coefh(:, 2:) ! (knon, 2:klev) |
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! coefficient, chaleur et humidité |
! coefficient, chaleur et humidité |
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! Local: |
! Local: |
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INTEGER knon ! nombre de points a traiter |
INTEGER knon ! nombre de points a traiter |
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INTEGER itop(size(coefm, 1)) ! (knon) numero de couche du sommet |
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! de la couche limite |
INTEGER itop(size(ts)) ! (knon) |
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! numero de couche du sommet de la couche limite |
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! Quelques constantes et options: |
! Quelques constantes et options: |
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! formule du Centre Europeen dans l'atmosphere |
! formule du Centre Europeen dans l'atmosphere |
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INTEGER i, k |
INTEGER i, k |
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REAL zgeop(klon, klev) |
REAL zmgeom(size(ts)) |
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REAL zmgeom(klon) |
REAL ri(size(ts)) |
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REAL ri(klon) |
REAL l2(size(ts)) |
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REAL l2(klon) |
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REAL u1(klon), v1(klon), t1(klon), q1(klon), z1(klon) |
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REAL zdphi, zdu2, ztvd, ztvu, cdn |
REAL zdphi, zdu2, ztvd, ztvu, cdn |
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REAL scf |
REAL scf |
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REAL zt, zq, zcvm5, zcor, zqs, zfr, zdqs |
REAL zt, zq, zcvm5, zcor, zqs, zfr, zdqs |
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!-------------------------------------------------------------------- |
!-------------------------------------------------------------------- |
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knon = size(coefm, 1) |
knon = size(ts) |
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! Prescrire la valeur de contre-gradient |
! Prescrire la valeur de contre-gradient |
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if (iflag_pbl.eq.1) then |
if (iflag_pbl == 1) then |
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DO k = 3, klev |
DO k = 3, klev |
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gamt(k) = -1.0E-03 |
gamt(k) = - 1E-3 |
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ENDDO |
ENDDO |
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gamt(2) = -2.5E-03 |
gamt(2) = - 2.5E-3 |
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else |
else |
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DO k = 2, klev |
DO k = 2, klev |
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gamt(k) = 0.0 |
gamt(k) = 0.0 |
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ENDDO |
ENDDO |
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ENDIF |
ENDIF |
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IF ( nsrf .NE. is_oce ) THEN |
IF (nsrf /= is_oce) THEN |
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kstable = ksta_ter |
kstable = ksta_ter |
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ELSE |
ELSE |
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kstable = ksta |
kstable = ksta |
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ENDIF |
ENDIF |
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! Calculer les géopotentiels de chaque couche |
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DO i = 1, knon |
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zgeop(i, 1) = RD * t(i, 1) / (0.5 * (paprs(i, 1) + pplay(i, 1))) & |
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* (paprs(i, 1) - pplay(i, 1)) |
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ENDDO |
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DO k = 2, klev |
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DO i = 1, knon |
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zgeop(i, k) = zgeop(i, k-1) & |
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+ RD * 0.5*(t(i, k-1)+t(i, k)) / paprs(i, k) & |
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* (pplay(i, k-1)-pplay(i, k)) |
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ENDDO |
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ENDDO |
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! Calculer le frottement au sol (Cdrag) |
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DO i = 1, knon |
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u1(i) = u(i, 1) |
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v1(i) = v(i, 1) |
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t1(i) = t(i, 1) |
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q1(i) = q(i, 1) |
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z1(i) = zgeop(i, 1) |
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ENDDO |
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CALL clcdrag(nsrf, u1, v1, t1, q1, z1, ts, qsurf, rugos, coefm(:, 1), & |
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coefh(:, 1)) |
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! Calculer les coefficients turbulents dans l'atmosphere |
! Calculer les coefficients turbulents dans l'atmosphere |
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itop = isommet |
itop = isommet |
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loop_vertical: DO k = 2, isommet |
loop_vertical: DO k = 2, isommet |
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loop_horiz: DO i = 1, knon |
loop_horiz: DO i = 1, knon |
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zdu2 = MAX(cepdu2, (u(i, k)-u(i, k-1))**2 & |
zdu2 = MAX(cepdu2, (u(i, k) - u(i, k - 1))**2 & |
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+(v(i, k)-v(i, k-1))**2) |
+ (v(i, k) - v(i, k - 1))**2) |
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zmgeom(i) = zgeop(i, k)-zgeop(i, k-1) |
zmgeom(i) = zgeop(i, k) - zgeop(i, k - 1) |
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zdphi =zmgeom(i) / 2.0 |
zdphi = zmgeom(i) / 2.0 |
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zt = (t(i, k)+t(i, k-1)) * 0.5 |
zt = (t(i, k) + t(i, k - 1)) * 0.5 |
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zq = (q(i, k)+q(i, k-1)) * 0.5 |
zq = (q(i, k) + q(i, k - 1)) * 0.5 |
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! calculer Qs et dQs/dT: |
! calculer Qs et dQs/dT: |
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zdelta = RTT >=zt |
zdelta = RTT >=zt |
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zcvm5 = merge(R5IES * RLSTT, R5LES * RLVTT, zdelta) / RCPD & |
zcvm5 = merge(R5IES * RLSTT, R5LES * RLVTT, zdelta) / RCPD & |
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/ (1. + RVTMP2*zq) |
/ (1. + RVTMP2 * zq) |
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zqs = R2ES * FOEEW(zt, zdelta) / pplay(i, k) |
zqs = R2ES * FOEEW(zt, zdelta) / pplay(i, k) |
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zqs = MIN(0.5, zqs) |
zqs = MIN(0.5, zqs) |
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zcor = 1./(1.-RETV*zqs) |
zcor = 1./(1. - RETV * zqs) |
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zqs = zqs*zcor |
zqs = zqs * zcor |
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zdqs = FOEDE(zt, zdelta, zcvm5, zqs, zcor) |
zdqs = FOEDE(zt, zdelta, zcvm5, zqs, zcor) |
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! calculer la fraction nuageuse (processus humide): |
! calculer la fraction nuageuse (processus humide): |
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zfr = (zq+ratqs*zq-zqs) / (2.0*ratqs*zq) |
zfr = (zq + ratqs * zq - zqs) / (2.0 * ratqs * zq) |
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zfr = MAX(0.0, MIN(1.0, zfr)) |
zfr = MAX(0.0, MIN(1.0, zfr)) |
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IF (.NOT.richum) zfr = 0.0 |
IF (.NOT.richum) zfr = 0.0 |
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! calculer le nombre de Richardson: |
! calculer le nombre de Richardson: |
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IF (tvirtu) THEN |
IF (tvirtu) THEN |
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ztvd =( t(i, k) & |
ztvd = (t(i, k) & |
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+ zdphi/RCPD/(1.+RVTMP2*zq) & |
+ zdphi/RCPD/(1. + RVTMP2 * zq) & |
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*( (1.-zfr) + zfr*(1.+RLVTT*zqs/RD/zt)/(1.+zdqs) ) & |
* ((1. - zfr) + zfr * (1. + RLVTT * zqs/RD/zt)/(1. + zdqs)) & |
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)*(1.+RETV*q(i, k)) |
) * (1. + RETV * q(i, k)) |
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ztvu =( t(i, k-1) & |
ztvu = (t(i, k - 1) & |
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- zdphi/RCPD/(1.+RVTMP2*zq) & |
- zdphi/RCPD/(1. + RVTMP2 * zq) & |
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*( (1.-zfr) + zfr*(1.+RLVTT*zqs/RD/zt)/(1.+zdqs) ) & |
* ((1. - zfr) + zfr * (1. + RLVTT * zqs/RD/zt)/(1. + zdqs)) & |
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)*(1.+RETV*q(i, k-1)) |
) * (1. + RETV * q(i, k - 1)) |
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ri(i) =zmgeom(i)*(ztvd-ztvu)/(zdu2*0.5*(ztvd+ztvu)) |
ri(i) = zmgeom(i) * (ztvd - ztvu)/(zdu2 * 0.5 * (ztvd + ztvu)) |
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ri(i) = ri(i) & |
ri(i) = ri(i) & |
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+ zmgeom(i)*zmgeom(i)/RG*gamt(k) & |
+ zmgeom(i) * zmgeom(i)/RG * gamt(k) & |
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*(paprs(i, k)/101325.0)**RKAPPA & |
* (paprs(i, k)/101325.0)**RKAPPA & |
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/(zdu2*0.5*(ztvd+ztvu)) |
/(zdu2 * 0.5 * (ztvd + ztvu)) |
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ELSE |
ELSE |
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! calcul de Ridchardson compatible LMD5 |
! calcul de Ridchardson compatible LMD5 |
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ri(i) =(RCPD*(t(i, k)-t(i, k-1)) & |
ri(i) = (RCPD * (t(i, k) - t(i, k - 1)) & |
156 |
-RD*0.5*(t(i, k)+t(i, k-1))/paprs(i, k) & |
- RD * 0.5 * (t(i, k) + t(i, k - 1))/paprs(i, k) & |
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*(pplay(i, k)-pplay(i, k-1)) & |
* (pplay(i, k) - pplay(i, k - 1)) & |
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)*zmgeom(i)/(zdu2*0.5*RCPD*(t(i, k-1)+t(i, k))) |
) * zmgeom(i)/(zdu2 * 0.5 * RCPD * (t(i, k - 1) + t(i, k))) |
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ri(i) = ri(i) + & |
ri(i) = ri(i) + & |
160 |
zmgeom(i)*zmgeom(i)*gamt(k)/RG & |
zmgeom(i) * zmgeom(i) * gamt(k)/RG & |
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*(paprs(i, k)/101325.0)**RKAPPA & |
* (paprs(i, k)/101325.0)**RKAPPA & |
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/(zdu2*0.5*(t(i, k-1)+t(i, k))) |
/(zdu2 * 0.5 * (t(i, k - 1) + t(i, k))) |
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ENDIF |
ENDIF |
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! finalement, les coefficients d'echange sont obtenus: |
! finalement, les coefficients d'echange sont obtenus: |
167 |
cdn = SQRT(zdu2) / zmgeom(i) * RG |
cdn = SQRT(zdu2) / zmgeom(i) * RG |
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IF (opt_ec) THEN |
IF (opt_ec) THEN |
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z2geomf = zgeop(i, k-1)+zgeop(i, k) |
z2geomf = zgeop(i, k - 1) + zgeop(i, k) |
171 |
alm2 = (0.5*ckap/RG*z2geomf & |
alm2 = (0.5 * ckap/RG * z2geomf & |
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/(1.+0.5*ckap/rg/clam*z2geomf))**2 |
/(1. + 0.5 * ckap/rg/clam * z2geomf))**2 |
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zalh2 = (0.5*ckap/rg*z2geomf & |
zalh2 = (0.5 * ckap/rg * z2geomf & |
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/(1.+0.5*ckap/RG/(clam*SQRT(1.5*cd))*z2geomf))**2 |
/(1. + 0.5 * ckap/RG/(clam * SQRT(1.5 * cd)) * z2geomf))**2 |
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IF (ri(i) < 0.) THEN |
IF (ri(i) < 0.) THEN |
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! situation instable |
! situation instable |
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scf = ((zgeop(i, k)/zgeop(i, k-1))**(1./3.)-1.)**3 & |
scf = ((zgeop(i, k)/zgeop(i, k - 1))**(1./3.) - 1.)**3 & |
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/ (zmgeom(i)/RG)**3 / (zgeop(i, k-1)/RG) |
/ (zmgeom(i)/RG)**3 / (zgeop(i, k - 1)/RG) |
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scf = SQRT(-ri(i)*scf) |
scf = SQRT(- ri(i) * scf) |
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scfm = 1.0 / (1.0+3.0*cb*cc*alm2*scf) |
scfm = 1.0 / (1.0 + 3.0 * cb * cc * alm2 * scf) |
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zscfh = 1.0 / (1.0+3.0*cb*cc*zalh2*scf) |
zscfh = 1.0 / (1.0 + 3.0 * cb * cc * zalh2 * scf) |
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coefm(i, k) = cdn * alm2 * (1. - 2. * cb * ri(i) * scfm) |
coefm(i, k) = cdn * alm2 * (1. - 2. * cb * ri(i) * scfm) |
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coefh(i, k) = cdn*zalh2*(1.-3.0*cb*ri(i)*zscfh) |
coefh(i, k) = cdn * zalh2 * (1. - 3.0 * cb * ri(i) * zscfh) |
184 |
ELSE |
ELSE |
185 |
! situation stable |
! situation stable |
186 |
scf = SQRT(1.+cd*ri(i)) |
scf = SQRT(1. + cd * ri(i)) |
187 |
coefm(i, k) = cdn * alm2 / (1. + 2. * cb * ri(i) / scf) |
coefm(i, k) = cdn * alm2 / (1. + 2. * cb * ri(i) / scf) |
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coefh(i, k) = cdn*zalh2/(1.+3.0*cb*ri(i)*scf) |
coefh(i, k) = cdn * zalh2/(1. + 3.0 * cb * ri(i) * scf) |
189 |
ENDIF |
ENDIF |
190 |
ELSE |
ELSE |
191 |
l2(i) = (mixlen*MAX(0.0, (paprs(i, k)-paprs(i, itop(i)+1)) & |
l2(i) = (mixlen * MAX(0.0, (paprs(i, k) - paprs(i, itop(i) + 1)) & |
192 |
/(paprs(i, 2)-paprs(i, itop(i)+1)) ))**2 |
/(paprs(i, 2) - paprs(i, itop(i) + 1))))**2 |
193 |
coefm(i, k) = sqrt(max(cdn**2 * (ric - ri(i)) / ric, kstable)) |
coefm(i, k) = sqrt(max(cdn**2 * (ric - ri(i)) / ric, kstable)) |
194 |
coefm(i, k)= l2(i) * coefm(i, k) |
coefm(i, k) = l2(i) * coefm(i, k) |
195 |
coefh(i, k) = coefm(i, k) / prandtl ! h et m different |
coefh(i, k) = coefm(i, k) / prandtl ! h et m different |
196 |
ENDIF |
ENDIF |
197 |
ENDDO loop_horiz |
ENDDO loop_horiz |