4 |
|
|
5 |
contains |
contains |
6 |
|
|
7 |
SUBROUTINE calcul_fluxs(dtime, tsurf, p1lay, cal, beta, coef1lay, ps, & |
SUBROUTINE calcul_fluxs(tsurf, p1lay, cal, beta, cdragh, ps, qsurf, radsol, & |
8 |
qsurf, radsol, dif_grnd, t1lay, q1lay, u1lay, v1lay, petAcoef, & |
t1lay, q1lay, u1lay, v1lay, tAcoef, qAcoef, tBcoef, qBcoef, tsurf_new, & |
9 |
peqAcoef, petBcoef, peqBcoef, tsurf_new, evap, fluxlat, flux_t, & |
evap, fluxlat, flux_t, dflux_s, dflux_l, dif_grnd) |
|
dflux_s, dflux_l) |
|
10 |
|
|
11 |
! Cette routine calcule les flux en h et q à l'interface et une |
! Cette routine calcule les flux en h et q à l'interface et une |
12 |
! température de surface. |
! température de surface. |
13 |
|
|
14 |
! L. Fairhead, April 2000 |
! L. Fairhead, April 2000 |
15 |
|
|
16 |
USE fcttre, ONLY: foede, foeew |
! Note that, if cal = 0, beta = 1 and dif_grnd = 0, then tsurf_new |
17 |
|
! = tsurf and qsurf = qsat. |
18 |
|
|
19 |
|
! Libraries: |
20 |
use nr_util, only: assert_eq |
use nr_util, only: assert_eq |
21 |
|
|
22 |
|
use comconst, only: dtphys |
23 |
|
USE fcttre, ONLY: foede, foeew |
24 |
USE suphec_m, ONLY: rcpd, rd, retv, rlstt, rlvtt, rtt |
USE suphec_m, ONLY: rcpd, rd, retv, rlstt, rlvtt, rtt |
25 |
USE yoethf_m, ONLY: r2es, r5ies, r5les, rvtmp2 |
USE yoethf_m, ONLY: r2es, r5ies, r5les, rvtmp2 |
26 |
|
|
|
real, intent(IN):: dtime |
|
27 |
real, intent(IN):: tsurf(:) ! (knon) température de surface |
real, intent(IN):: tsurf(:) ! (knon) température de surface |
28 |
|
|
29 |
real, intent(IN):: p1lay(:) ! (knon) |
real, intent(IN):: p1lay(:) ! (knon) |
31 |
|
|
32 |
real, intent(IN):: cal(:) ! (knon) capacité calorifique du sol |
real, intent(IN):: cal(:) ! (knon) capacité calorifique du sol |
33 |
real, intent(IN):: beta(:) ! (knon) évaporation réelle |
real, intent(IN):: beta(:) ! (knon) évaporation réelle |
34 |
real, intent(IN):: coef1lay(:) ! (knon) coefficient d'échange |
real, intent(IN):: cdragh(:) ! (knon) coefficient d'échange |
35 |
real, intent(IN):: ps(:) ! (knon) pression au sol |
real, intent(IN):: ps(:) ! (knon) pression au sol, en Pa |
36 |
real, intent(OUT):: qsurf(:) ! (knon) humidité de l'air au-dessus du sol |
real, intent(OUT):: qsurf(:) ! (knon) humidité de l'air au-dessus du sol |
37 |
|
|
38 |
real, intent(IN):: radsol(:) ! (knon) |
real, intent(IN):: radsol(:) ! (knon) |
39 |
! rayonnement net au sol (longwave + shortwave) |
! net downward radiative (longwave + shortwave) flux at the surface |
40 |
|
|
41 |
real, intent(IN):: dif_grnd(:) ! (knon) |
real, intent(IN):: dif_grnd ! coefficient de diffusion vers le sol profond |
42 |
! coefficient de diffusion vers le sol profond |
real, intent(IN):: t1lay(:) ! (knon) temp\'erature de l'air 1\`ere couche |
43 |
|
real, intent(IN):: q1lay(:), u1lay(:), v1lay(:) ! (knon) |
44 |
|
|
45 |
real, intent(IN):: t1lay(:), q1lay(:), u1lay(:), v1lay(:) ! (knon) |
real, intent(IN):: tAcoef(:), qAcoef(:) ! (knon) |
|
|
|
|
real, intent(IN):: petAcoef(:), peqAcoef(:) ! (knon) |
|
46 |
! coefficients A de la résolution de la couche limite pour T et q |
! coefficients A de la résolution de la couche limite pour T et q |
47 |
|
|
48 |
real, intent(IN):: petBcoef(:), peqBcoef(:) ! (knon) |
real, intent(IN):: tBcoef(:), qBcoef(:) ! (knon) |
49 |
! coefficients B de la résolution de la couche limite pour t et q |
! coefficients B de la résolution de la couche limite pour t et q |
50 |
|
|
51 |
real, intent(OUT):: tsurf_new(:) ! (knon) température au sol |
real, intent(OUT):: tsurf_new(:) ! (knon) température au sol |
52 |
real, intent(OUT):: evap(:) ! (knon) |
real, intent(OUT):: evap(:) ! (knon) |
53 |
|
|
54 |
real, intent(OUT):: fluxlat(:), flux_t(:) ! (knon) |
real, intent(OUT):: fluxlat(:), flux_t(:) ! (knon) |
55 |
! flux de chaleurs latente et sensible |
! flux de chaleurs latente et sensible, en W m-2 |
56 |
|
|
57 |
real, intent(OUT):: dflux_s(:), dflux_l(:) ! (knon) |
real, intent(OUT):: dflux_s(:), dflux_l(:) ! (knon) |
58 |
! dérivées des flux de chaleurs sensible et latente par rapport à |
! dérivées des flux de chaleurs sensible et latente par rapport à |
60 |
|
|
61 |
! Local: |
! Local: |
62 |
integer i |
integer i |
63 |
integer knon ! nombre de points a traiter |
integer knon ! nombre de points \`a traiter |
64 |
real, dimension(size(ps)):: mh, oh, mq, nq, oq, dq_s_dt, coef ! (knon) |
real, dimension(size(ps)):: mh, oh, mq, nq, oq, dq_s_dt, coef ! (knon) |
65 |
real qsat(size(ps)) ! (knon) mass fraction |
real qsat(size(ps)) ! (knon) mass fraction |
66 |
real sl(size(ps)) ! (knon) chaleur latente d'évaporation ou de sublimation |
real sl(size(ps)) ! (knon) chaleur latente d'évaporation ou de sublimation |
67 |
logical delta |
logical delta |
68 |
real zcor |
real zcor |
69 |
real, parameter:: t_grnd = 271.35 |
real, parameter:: t_grnd = 271.35 |
70 |
|
real, parameter:: min_wind_speed = 1. ! in m s-1 |
71 |
|
|
72 |
!--------------------------------------------------------------------- |
!--------------------------------------------------------------------- |
73 |
|
|
74 |
knon = assert_eq((/size(tsurf), size(p1lay), size(cal), size(beta), & |
knon = assert_eq([size(tsurf), size(p1lay), size(cal), size(beta), & |
75 |
size(coef1lay), size(ps), size(qsurf), size(radsol), size(dif_grnd), & |
size(cdragh), size(ps), size(qsurf), size(radsol), size(t1lay), & |
76 |
size(t1lay), size(q1lay), size(u1lay), size(v1lay), size(petAcoef), & |
size(q1lay), size(u1lay), size(v1lay), size(tAcoef), size(qAcoef), & |
77 |
size(peqAcoef), size(petBcoef), size(peqBcoef), size(tsurf_new), & |
size(tBcoef), size(qBcoef), size(tsurf_new), size(evap), & |
78 |
size(evap), size(fluxlat), size(flux_t), size(dflux_s), & |
size(fluxlat), size(flux_t), size(dflux_s), size(dflux_l)], & |
79 |
size(dflux_l)/), "calcul_fluxs knon") |
"calcul_fluxs knon") |
80 |
|
|
81 |
! Traitement de l'humidité du sol |
! Traitement de l'humidité du sol |
82 |
|
|
86 |
zcor = 1. / (1. - retv * qsat(i)) |
zcor = 1. / (1. - retv * qsat(i)) |
87 |
qsat(i) = qsat(i) * zcor |
qsat(i) = qsat(i) * zcor |
88 |
dq_s_dt(i) = RCPD * FOEDE(tsurf(i), delta, merge(R5IES * RLSTT, & |
dq_s_dt(i) = RCPD * FOEDE(tsurf(i), delta, merge(R5IES * RLSTT, & |
89 |
R5LES * RLVTT, delta) / RCPD / (1. + RVTMP2 * q1lay(i)), & |
R5LES * RLVTT, delta) / RCPD / (1. + RVTMP2 * q1lay(i)), qsat(i), & |
90 |
qsat(i), zcor) / RLVTT |
zcor) / RLVTT |
91 |
ENDDO |
ENDDO |
92 |
|
|
93 |
coef = coef1lay * (1. + SQRT(u1lay**2 + v1lay**2)) * p1lay / (RD * t1lay) |
coef = cdragh * (min_wind_speed + SQRT(u1lay**2 + v1lay**2)) * p1lay & |
94 |
|
/ (RD * t1lay) |
95 |
sl = merge(RLSTT, RLVTT, tsurf < RTT) |
sl = merge(RLSTT, RLVTT, tsurf < RTT) |
96 |
|
|
97 |
! Q |
! Q |
98 |
oq = 1. - (beta * coef * peqBcoef * dtime) |
oq = 1. - beta * coef * qBcoef * dtphys |
99 |
mq = beta * coef * (peqAcoef - qsat + dq_s_dt * tsurf) / oq |
mq = beta * coef * (qAcoef - qsat + dq_s_dt * tsurf) / oq |
100 |
nq = beta * coef * (- 1. * dq_s_dt) / oq |
nq = - beta * coef * dq_s_dt / oq |
101 |
|
|
102 |
! H |
! H |
103 |
oh = 1. - (coef * petBcoef * dtime) |
oh = 1. - coef * tBcoef * dtphys |
104 |
mh = coef * petAcoef / oh |
mh = coef * tAcoef / oh |
105 |
dflux_s = - (coef * RCPD)/ oh |
dflux_s = - coef * RCPD / oh |
106 |
|
|
107 |
! Tsurface |
tsurf_new = (tsurf + cal / RCPD * dtphys * (radsol + mh + sl * mq) & |
108 |
tsurf_new = (tsurf + cal / RCPD * dtime * (radsol + mh + sl * mq) & |
+ dif_grnd * t_grnd * dtphys) / (1. - dtphys * cal / RCPD * (dflux_s & |
109 |
+ dif_grnd * t_grnd * dtime) / (1. - dtime * cal / RCPD * (dflux_s & |
+ sl * nq) + dtphys * dif_grnd) |
|
+ sl * nq) + dtime * dif_grnd) |
|
|
|
|
110 |
evap = - mq - nq * tsurf_new |
evap = - mq - nq * tsurf_new |
111 |
fluxlat = - evap * sl |
fluxlat = - evap * sl |
112 |
flux_t = mh + dflux_s * tsurf_new |
flux_t = mh + dflux_s * tsurf_new |
113 |
dflux_l = sl * nq |
dflux_l = sl * nq |
114 |
|
qsurf = (qAcoef - qBcoef * evap * dtphys) * (1. - beta) + beta * (qsat & |
|
! Nouvelle valeur de l'humidité au dessus du sol : |
|
|
qsurf = (peqAcoef - peqBcoef * evap * dtime) * (1. - beta) + beta * (qsat & |
|
115 |
+ dq_s_dt * (tsurf_new - tsurf)) |
+ dq_s_dt * (tsurf_new - tsurf)) |
116 |
|
|
117 |
END SUBROUTINE calcul_fluxs |
END SUBROUTINE calcul_fluxs |