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! Local: |
! Local: |
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integer i |
integer i |
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real, dimension(size(ps)) :: zx_mh, zx_nh, zx_oh |
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real, dimension(size(ps)) :: zx_mq, zx_nq, zx_oq |
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real, dimension(size(ps)) :: zx_pkh, zx_dq_s_dt, zx_qsat, zx_coef |
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real, dimension(size(ps)) :: zx_sl, zx_k1 |
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real, dimension(size(ps)) :: zx_q_0 , d_ts |
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logical zdelta |
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real zcvm5, zx_qs, zcor, zx_dq_s_dh |
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real :: bilan_f, fq_fonte |
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REAL :: subli, fsno |
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REAL :: qsat_new, q1_new |
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integer knon ! nombre de points a traiter |
integer knon ! nombre de points a traiter |
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real, dimension(size(ps)):: mh, oh, mq, nq, oq |
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real, dimension(size(ps)):: dq_s_dt, coef |
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real qsat(size(ps)) ! qsat en kg/kg |
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real sl(size(ps)) ! chaleur latente d'evaporation ou de sublimation |
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logical delta |
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real zcor |
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real, parameter:: t_grnd = 271.35, t_coup = 273.15 |
real, parameter:: t_grnd = 271.35, t_coup = 273.15 |
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!--------------------------------------------------------------------- |
!--------------------------------------------------------------------- |
82 |
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83 |
! Traitement humidite du sol |
! Traitement humidite du sol |
84 |
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85 |
evap = 0. |
IF (thermcep) THEN |
86 |
fluxsens=0. |
DO i = 1, knon |
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fluxlat=0. |
delta = rtt >= tsurf(i) |
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dflux_s = 0. |
qsat(i) = MIN(0.5, r2es * FOEEW(tsurf(i), delta) / ps(i)) |
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dflux_l = 0. |
zcor = 1. / (1. - retv * qsat(i)) |
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qsat(i) = qsat(i) * zcor |
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! zx_qs = qsat en kg/kg |
dq_s_dt(i) = RCPD * FOEDE(tsurf(i), delta, merge(R5IES * RLSTT, & |
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R5LES * RLVTT, delta) / RCPD / (1. + RVTMP2 * q1lay(i)), & |
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DO i = 1, knon |
qsat(i), zcor) / RLVTT |
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zx_pkh(i) = (ps(i)/ps(i))**RKAPPA |
ENDDO |
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IF (thermcep) THEN |
ELSE |
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zdelta= rtt >= tsurf(i) |
DO i = 1, knon |
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zcvm5 = merge(R5IES*RLSTT, R5LES*RLVTT, zdelta) |
IF (tsurf(i) < t_coup) THEN |
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zcvm5 = zcvm5 / RCPD / (1.0+RVTMP2*q1lay(i)) |
qsat(i) = qsats(tsurf(i)) / ps(i) |
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zx_qs= r2es * FOEEW(tsurf(i), zdelta)/ps(i) |
dq_s_dt(i) = RCPD * dqsats(tsurf(i), qsat(i)) / RLVTT |
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zx_qs=MIN(0.5, zx_qs) |
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zcor=1./(1.-retv*zx_qs) |
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zx_qs=zx_qs*zcor |
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zx_dq_s_dh = FOEDE(tsurf(i), zdelta, zcvm5, zx_qs, zcor) & |
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/RLVTT / zx_pkh(i) |
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ELSE |
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IF (tsurf(i).LT.t_coup) THEN |
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zx_qs = qsats(tsurf(i)) / ps(i) |
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zx_dq_s_dh = dqsats(tsurf(i), zx_qs)/RLVTT & |
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/ zx_pkh(i) |
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100 |
ELSE |
ELSE |
101 |
zx_qs = qsatl(tsurf(i)) / ps(i) |
qsat(i) = qsatl(tsurf(i)) / ps(i) |
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zx_dq_s_dh = dqsatl(tsurf(i), zx_qs)/RLVTT & |
dq_s_dt(i) = RCPD * dqsatl(tsurf(i), qsat(i)) / RLVTT |
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/ zx_pkh(i) |
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103 |
ENDIF |
ENDIF |
104 |
ENDIF |
ENDDO |
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zx_dq_s_dt(i) = RCPD * zx_pkh(i) * zx_dq_s_dh |
ENDIF |
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zx_qsat(i) = zx_qs |
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zx_coef(i) = coef1lay(i) & |
coef = coef1lay * (1. + SQRT(u1lay**2 + v1lay**2)) * p1lay / (RD * t1lay) |
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* (1.0+SQRT(u1lay(i)**2+v1lay(i)**2)) & |
sl = merge(RLSTT, RLVTT, tsurf < RTT) |
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* p1lay(i)/(RD*t1lay(i)) |
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110 |
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! Q |
111 |
ENDDO |
oq = 1. - (beta * coef * peqBcoef * dtime) |
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mq = beta * coef * (peqAcoef - qsat + dq_s_dt * tsurf) / oq |
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! === Calcul de la temperature de surface === |
nq = beta * coef * (- 1. * dq_s_dt) / oq |
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! zx_sl = chaleur latente d'evaporation ou de sublimation |
! H |
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oh = 1. - (coef * petBcoef * dtime) |
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do i = 1, knon |
mh = coef * petAcoef / oh |
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zx_sl(i) = RLVTT |
dflux_s = - (coef * RCPD)/ oh |
119 |
if (tsurf(i) .LT. RTT) zx_sl(i) = RLSTT |
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120 |
zx_k1(i) = zx_coef(i) |
! Tsurface |
121 |
enddo |
tsurf_new = (tsurf + cal / RCPD * dtime * (radsol + mh + sl * mq) & |
122 |
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+ dif_grnd * t_grnd * dtime) / (1. - dtime * cal / RCPD * (dflux_s & |
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do i = 1, knon |
+ sl * nq) + dtime * dif_grnd) |
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! Q |
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125 |
zx_oq(i) = 1. - (beta(i) * zx_k1(i) * peqBcoef(i) * dtime) |
evap = - mq - nq * tsurf_new |
126 |
zx_mq(i) = beta(i) * zx_k1(i) * & |
fluxlat = - evap * sl |
127 |
(peqAcoef(i) - zx_qsat(i) & |
fluxsens = mh + dflux_s * tsurf_new |
128 |
+ zx_dq_s_dt(i) * tsurf(i)) & |
dflux_l = sl * nq |
129 |
/ zx_oq(i) |
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130 |
zx_nq(i) = beta(i) * zx_k1(i) * (-1. * zx_dq_s_dt(i)) & |
! Nouvelle valeur de l'humidité au dessus du sol : |
131 |
/ zx_oq(i) |
qsurf = (peqAcoef - peqBcoef * evap * dtime) * (1. - beta) + beta * (qsat & |
132 |
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+ dq_s_dt * (tsurf_new - tsurf)) |
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! H |
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zx_oh(i) = 1. - (zx_k1(i) * petBcoef(i) * dtime) |
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zx_mh(i) = zx_k1(i) * petAcoef(i) / zx_oh(i) |
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zx_nh(i) = - (zx_k1(i) * RCPD * zx_pkh(i))/ zx_oh(i) |
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! Tsurface |
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tsurf_new(i) = (tsurf(i) + cal(i)/(RCPD * zx_pkh(i)) * dtime * & |
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(radsol(i) + zx_mh(i) + zx_sl(i) * zx_mq(i)) & |
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+ dif_grnd(i) * t_grnd * dtime)/ & |
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( 1. - dtime * cal(i)/(RCPD * zx_pkh(i)) * ( & |
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zx_nh(i) + zx_sl(i) * zx_nq(i)) & |
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+ dtime * dif_grnd(i)) |
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! Y'a-t-il fonte de neige? |
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! fonte_neige = (nisurf /= is_oce) .AND. & |
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! & (snow(i) > epsfra .OR. nisurf == is_sic .OR. nisurf == is_lic) & |
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! & .AND. (tsurf_new(i) >= RTT) |
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! if (fonte_neige) tsurf_new(i) = RTT |
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d_ts(i) = tsurf_new(i) - tsurf(i) |
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! zx_h_ts(i) = tsurf_new(i) * RCPD * zx_pkh(i) |
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! zx_q_0(i) = zx_qsat(i) + zx_dq_s_dt(i) * d_ts(i) |
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!== flux_q est le flux de vapeur d'eau: kg/(m**2 s) positive vers bas |
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!== flux_t est le flux de cpt (energie sensible): j/(m**2 s) |
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evap(i) = - zx_mq(i) - zx_nq(i) * tsurf_new(i) |
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fluxlat(i) = - evap(i) * zx_sl(i) |
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fluxsens(i) = zx_mh(i) + zx_nh(i) * tsurf_new(i) |
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! Derives des flux dF/dTs (W m-2 K-1): |
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dflux_s(i) = zx_nh(i) |
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dflux_l(i) = (zx_sl(i) * zx_nq(i)) |
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! Nouvelle valeure de l'humidite au dessus du sol |
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qsat_new=zx_qsat(i) + zx_dq_s_dt(i) * d_ts(i) |
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q1_new = peqAcoef(i) - peqBcoef(i)*evap(i)*dtime |
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qsurf(i)=q1_new*(1.-beta(i)) + beta(i)*qsat_new |
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ENDDO |
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133 |
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134 |
END SUBROUTINE calcul_fluxs |
END SUBROUTINE calcul_fluxs |
135 |
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