trunk/phylmd/clqh.f

module clqh_m

  IMPLICIT none

contains

  SUBROUTINE clqh(dtime, itime, jour, debut, rlat, knon, nisurf, knindex, &
       pctsrf, tsoil, qsol, rmu0, co2_ppm, rugos, rugoro, u1lay, v1lay, coef, &
       t, q, ts, paprs, pplay, delp, radsol, albedo, snow, qsurf, &
       precip_rain, precip_snow, fder, fluxlat, pctsrf_new, agesno, d_t, d_q, &
       d_ts, z0_new, flux_t, flux_q, dflux_s, dflux_l, fqcalving, ffonte, &
       run_off_lic_0)

    ! Author: Z. X. Li (LMD/CNRS)
    ! Date: 1993/08/18
    ! Objet : diffusion verticale de "q" et de "h"

    USE conf_phys_m, ONLY: iflag_pbl
    USE dimens_m, ONLY: iim, jjm
    USE dimphy, ONLY: klev, klon
    USE dimsoil, ONLY: nsoilmx
    USE indicesol, ONLY: is_ter, nbsrf
    USE interfsurf_hq_m, ONLY: interfsurf_hq
    USE suphec_m, ONLY: rcpd, rd, rg, rkappa

    REAL, intent(in):: dtime ! intervalle du temps (s)
    integer, intent(in):: itime
    integer, intent(in):: jour ! jour de l'annee en cours
    logical, intent(in):: debut
    real, intent(in):: rlat(klon)
    INTEGER, intent(in):: knon
    integer, intent(in):: nisurf
    integer, intent(in):: knindex(:) ! (knon)
    real, intent(in):: pctsrf(klon, nbsrf)
    REAL tsoil(klon, nsoilmx)

    REAL, intent(inout):: qsol(klon)
    ! column-density of water in soil, in kg m-2

    real, intent(in):: rmu0(klon) ! cosinus de l'angle solaire zenithal
    REAL, intent(in):: co2_ppm ! taux CO2 atmosphere
    real rugos(klon) ! rugosite
    REAL rugoro(klon)
    REAL u1lay(klon) ! vitesse u de la 1ere couche (m / s)
    REAL v1lay(klon) ! vitesse v de la 1ere couche (m / s)

    REAL, intent(in):: coef(:, :) ! (knon, klev)
    ! Le coefficient d'echange (m**2 / s) multiplie par le cisaillement
    ! du vent (dV / dz). La premiere valeur indique la valeur de Cdrag
    ! (sans unite).

    REAL t(klon, klev) ! temperature (K)
    REAL q(klon, klev) ! humidite specifique (kg / kg)
    REAL, intent(in):: ts(klon) ! temperature du sol (K)
    REAL paprs(klon, klev+1) ! pression a inter-couche (Pa)
    REAL pplay(klon, klev) ! pression au milieu de couche (Pa)
    REAL delp(klon, klev) ! epaisseur de couche en pression (Pa)
    REAL radsol(klon) ! ray. net au sol (Solaire+IR) W / m2
    REAL, intent(inout):: albedo(:) ! (knon) albedo de la surface
    REAL snow(klon) ! hauteur de neige
    REAL qsurf(klon) ! humidite de l'air au dessus de la surface

    real, intent(in):: precip_rain(klon)
    ! liquid water mass flux (kg / m2 / s), positive down

    real, intent(in):: precip_snow(klon)
    ! solid water mass flux (kg / m2 / s), positive down

    real, intent(inout):: fder(klon)
    real fluxlat(klon)
    real pctsrf_new(klon, nbsrf)
    REAL, intent(inout):: agesno(:) ! (knon)
    REAL d_t(klon, klev) ! incrementation de "t"
    REAL d_q(klon, klev) ! incrementation de "q"
    REAL, intent(out):: d_ts(:) ! (knon) incrementation de "ts"
    real z0_new(klon)
    REAL flux_t(klon, klev) ! (diagnostic) flux de la chaleur
    ! sensible, flux de Cp*T, positif vers
    ! le bas: j / (m**2 s) c.a.d.: W / m2
    REAL flux_q(klon, klev) ! flux de la vapeur d'eau:kg / (m**2 s)
    REAL dflux_s(klon) ! derivee du flux sensible dF / dTs
    REAL dflux_l(klon) ! derivee du flux latent dF / dTs

    ! Flux d'eau "perdue" par la surface et n\'ecessaire pour que limiter la
    ! hauteur de neige, en kg / m2 / s
    REAL fqcalving(klon)

    ! Flux thermique utiliser pour fondre la neige
    REAL ffonte(klon)

    REAL run_off_lic_0(klon)! runof glacier au pas de temps precedent

    ! Local:

    REAL evap(klon) ! evaporation au sol

    INTEGER i, k
    REAL zx_cq(klon, klev)
    REAL zx_dq(klon, klev)
    REAL zx_ch(klon, klev)
    REAL zx_dh(klon, klev)
    REAL zx_buf1(klon)
    REAL zx_buf2(klon)
    REAL zx_coef(klon, klev)
    REAL local_h(klon, klev) ! enthalpie potentielle
    REAL local_q(klon, klev)
    REAL local_ts(klon)
    REAL psref(klon) ! pression de reference pour temperature potent.
    REAL zx_pkh(klon, klev), zx_pkf(klon, klev)

    ! contre-gradient pour la vapeur d'eau: (kg / kg) / metre
    REAL gamq(klon, 2:klev)
    ! contre-gradient pour la chaleur sensible: Kelvin / metre
    REAL gamt(klon, 2:klev)
    REAL z_gamaq(klon, 2:klev), z_gamah(klon, 2:klev)
    REAL zdelz

    real zlev1(klon)
    real temp_air(klon), spechum(klon)
    real epot_air(klon), ccanopy(klon)
    real tq_cdrag(klon), petAcoef(klon), peqAcoef(klon)
    real petBcoef(klon), peqBcoef(klon)
    real p1lay(klon)

    real fluxsens(klon)
    real tsurf_new(knon)
    real zzpk

    !----------------------------------------------------------------

    if (iflag_pbl == 1) then
       do k = 3, klev
          do i = 1, knon
             gamq(i, k)= 0.0
             gamt(i, k)= - 1.0e-03
          enddo
       enddo
       do i = 1, knon
          gamq(i, 2) = 0.0
          gamt(i, 2) = - 2.5e-03
       enddo
    else
       do k = 2, klev
          do i = 1, knon
             gamq(i, k) = 0.0
             gamt(i, k) = 0.0
          enddo
       enddo
    endif

    DO i = 1, knon
       psref(i) = paprs(i, 1) !pression de reference est celle au sol
       local_ts(i) = ts(i)
    ENDDO
    DO k = 1, klev
       DO i = 1, knon
          zx_pkh(i, k) = (psref(i) / paprs(i, k))**RKAPPA
          zx_pkf(i, k) = (psref(i) / pplay(i, k))**RKAPPA
          local_h(i, k) = RCPD * t(i, k) * zx_pkf(i, k)
          local_q(i, k) = q(i, k)
       ENDDO
    ENDDO

    ! Convertir les coefficients en variables convenables au calcul:

    DO k = 2, klev
       DO i = 1, knon
          zx_coef(i, k) = coef(i, k)*RG / (pplay(i, k - 1) - pplay(i, k)) &
               *(paprs(i, k)*2 / (t(i, k)+t(i, k - 1)) / RD)**2
          zx_coef(i, k) = zx_coef(i, k) * dtime*RG
       ENDDO
    ENDDO

    ! Preparer les flux lies aux contre-gardients

    DO k = 2, klev
       DO i = 1, knon
          zdelz = RD * (t(i, k - 1)+t(i, k)) / 2.0 / RG / paprs(i, k) &
               *(pplay(i, k - 1) - pplay(i, k))
          z_gamaq(i, k) = gamq(i, k) * zdelz
          z_gamah(i, k) = gamt(i, k) * zdelz *RCPD * zx_pkh(i, k)
       ENDDO
    ENDDO
    DO i = 1, knon
       zx_buf1(i) = zx_coef(i, klev) + delp(i, klev)
       zx_cq(i, klev) = (local_q(i, klev)*delp(i, klev) &
            - zx_coef(i, klev)*z_gamaq(i, klev)) / zx_buf1(i)
       zx_dq(i, klev) = zx_coef(i, klev) / zx_buf1(i)

       zzpk=(pplay(i, klev) / psref(i))**RKAPPA
       zx_buf2(i) = zzpk*delp(i, klev) + zx_coef(i, klev)
       zx_ch(i, klev) = (local_h(i, klev)*zzpk*delp(i, klev) &
            - zx_coef(i, klev)*z_gamah(i, klev)) / zx_buf2(i)
       zx_dh(i, klev) = zx_coef(i, klev) / zx_buf2(i)
    ENDDO
    DO k = klev - 1, 2, - 1
       DO i = 1, knon
          zx_buf1(i) = delp(i, k)+zx_coef(i, k) &
               +zx_coef(i, k+1)*(1. - zx_dq(i, k+1))
          zx_cq(i, k) = (local_q(i, k)*delp(i, k) &
               +zx_coef(i, k+1)*zx_cq(i, k+1) &
               +zx_coef(i, k+1)*z_gamaq(i, k+1) &
               - zx_coef(i, k)*z_gamaq(i, k)) / zx_buf1(i)
          zx_dq(i, k) = zx_coef(i, k) / zx_buf1(i)

          zzpk=(pplay(i, k) / psref(i))**RKAPPA
          zx_buf2(i) = zzpk*delp(i, k)+zx_coef(i, k) &
               +zx_coef(i, k+1)*(1. - zx_dh(i, k+1))
          zx_ch(i, k) = (local_h(i, k)*zzpk*delp(i, k) &
               +zx_coef(i, k+1)*zx_ch(i, k+1) &
               +zx_coef(i, k+1)*z_gamah(i, k+1) &
               - zx_coef(i, k)*z_gamah(i, k)) / zx_buf2(i)
          zx_dh(i, k) = zx_coef(i, k) / zx_buf2(i)
       ENDDO
    ENDDO

    DO i = 1, knon
       zx_buf1(i) = delp(i, 1) + zx_coef(i, 2)*(1. - zx_dq(i, 2))
       zx_cq(i, 1) = (local_q(i, 1)*delp(i, 1) &
            +zx_coef(i, 2)*(z_gamaq(i, 2)+zx_cq(i, 2))) &
            / zx_buf1(i)
       zx_dq(i, 1) = - 1. * RG / zx_buf1(i)

       zzpk=(pplay(i, 1) / psref(i))**RKAPPA
       zx_buf2(i) = zzpk*delp(i, 1) + zx_coef(i, 2)*(1. - zx_dh(i, 2))
       zx_ch(i, 1) = (local_h(i, 1)*zzpk*delp(i, 1) &
            +zx_coef(i, 2)*(z_gamah(i, 2)+zx_ch(i, 2))) &
            / zx_buf2(i)
       zx_dh(i, 1) = - 1. * RG / zx_buf2(i)
    ENDDO

    ! Appel a interfsurf (appel generique) routine d'interface avec la surface

    ! initialisation
    petAcoef =0. 
    peqAcoef = 0.
    petBcoef =0.
    peqBcoef = 0.
    p1lay =0.

    petAcoef(1:knon) = zx_ch(1:knon, 1)
    peqAcoef(1:knon) = zx_cq(1:knon, 1)
    petBcoef(1:knon) = zx_dh(1:knon, 1)
    peqBcoef(1:knon) = zx_dq(1:knon, 1)
    tq_cdrag(1:knon) =coef(:knon, 1)
    temp_air(1:knon) =t(1:knon, 1)
    epot_air(1:knon) =local_h(1:knon, 1)
    spechum(1:knon)=q(1:knon, 1)
    p1lay(1:knon) = pplay(1:knon, 1)
    zlev1(1:knon) = delp(1:knon, 1)

    ccanopy = co2_ppm

    CALL interfsurf_hq(itime, dtime, jour, rmu0, nisurf, knon, knindex, &
         pctsrf, rlat, debut, nsoilmx, tsoil, qsol, u1lay, v1lay, temp_air, &
         spechum, tq_cdrag, petAcoef, peqAcoef, petBcoef, peqBcoef, &
         precip_rain, precip_snow, fder, rugos, rugoro, snow, qsurf, &
         ts(:knon), p1lay, psref, radsol, evap, fluxsens, fluxlat, dflux_l, &
         dflux_s, tsurf_new, albedo, z0_new, pctsrf_new, agesno, fqcalving, &
         ffonte, run_off_lic_0)

    flux_t(:knon, 1) = fluxsens(:knon)
    flux_q(:knon, 1) = - evap(:knon)
    d_ts = tsurf_new - ts(:knon)

    !==== une fois on a zx_h_ts, on peut faire l'iteration ========
    DO i = 1, knon
       local_h(i, 1) = zx_ch(i, 1) + zx_dh(i, 1)*flux_t(i, 1)*dtime
       local_q(i, 1) = zx_cq(i, 1) + zx_dq(i, 1)*flux_q(i, 1)*dtime
    ENDDO
    DO k = 2, klev
       DO i = 1, knon
          local_q(i, k) = zx_cq(i, k) + zx_dq(i, k)*local_q(i, k - 1)
          local_h(i, k) = zx_ch(i, k) + zx_dh(i, k)*local_h(i, k - 1)
       ENDDO
    ENDDO

    !== flux_q est le flux de vapeur d'eau: kg / (m**2 s) positive vers bas
    !== flux_t est le flux de cpt (energie sensible): j / (m**2 s)
    DO k = 2, klev
       DO i = 1, knon
          flux_q(i, k) = (zx_coef(i, k) / RG / dtime) &
               * (local_q(i, k) - local_q(i, k - 1)+z_gamaq(i, k))
          flux_t(i, k) = (zx_coef(i, k) / RG / dtime) &
               * (local_h(i, k) - local_h(i, k - 1)+z_gamah(i, k)) &
               / zx_pkh(i, k)
       ENDDO
    ENDDO

    ! Calcul tendances
    DO k = 1, klev
       DO i = 1, knon
          d_t(i, k) = local_h(i, k) / zx_pkf(i, k) / RCPD - t(i, k)
          d_q(i, k) = local_q(i, k) - q(i, k)
       ENDDO
    ENDDO

  END SUBROUTINE clqh

end module clqh_m
1	module clqh_m
2
3	IMPLICIT none
4
5	contains
6
7	SUBROUTINE clqh(dtime, itime, jour, debut, rlat, knon, nisurf, knindex, &
8	pctsrf, tsoil, qsol, rmu0, co2_ppm, rugos, rugoro, u1lay, v1lay, coef, &
9	t, q, ts, paprs, pplay, delp, radsol, albedo, snow, qsurf, &
10	precip_rain, precip_snow, fder, fluxlat, pctsrf_new, agesno, d_t, d_q, &
11	d_ts, z0_new, flux_t, flux_q, dflux_s, dflux_l, fqcalving, ffonte, &
12	run_off_lic_0)
13
14	! Author: Z. X. Li (LMD/CNRS)
15	! Date: 1993/08/18
16	! Objet : diffusion verticale de "q" et de "h"
17
18	USE conf_phys_m, ONLY: iflag_pbl
19	USE dimens_m, ONLY: iim, jjm
20	USE dimphy, ONLY: klev, klon
21	USE dimsoil, ONLY: nsoilmx
22	USE indicesol, ONLY: is_ter, nbsrf
23	USE interfsurf_hq_m, ONLY: interfsurf_hq
24	USE suphec_m, ONLY: rcpd, rd, rg, rkappa
25
26	REAL, intent(in):: dtime ! intervalle du temps (s)
27	integer, intent(in):: itime
28	integer, intent(in):: jour ! jour de l'annee en cours
29	logical, intent(in):: debut
30	real, intent(in):: rlat(klon)
31	INTEGER, intent(in):: knon
32	integer, intent(in):: nisurf
33	integer, intent(in):: knindex(:) ! (knon)
34	real, intent(in):: pctsrf(klon, nbsrf)
35	REAL tsoil(klon, nsoilmx)
36
37	REAL, intent(inout):: qsol(klon)
38	! column-density of water in soil, in kg m-2
39
40	real, intent(in):: rmu0(klon) ! cosinus de l'angle solaire zenithal
41	REAL, intent(in):: co2_ppm ! taux CO2 atmosphere
42	real rugos(klon) ! rugosite
43	REAL rugoro(klon)
44	REAL u1lay(klon) ! vitesse u de la 1ere couche (m / s)
45	REAL v1lay(klon) ! vitesse v de la 1ere couche (m / s)
46
47	REAL, intent(in):: coef(:, :) ! (knon, klev)
48	! Le coefficient d'echange (m**2 / s) multiplie par le cisaillement
49	! du vent (dV / dz). La premiere valeur indique la valeur de Cdrag
50	! (sans unite).
51
52	REAL t(klon, klev) ! temperature (K)
53	REAL q(klon, klev) ! humidite specifique (kg / kg)
54	REAL, intent(in):: ts(klon) ! temperature du sol (K)
55	REAL paprs(klon, klev+1) ! pression a inter-couche (Pa)
56	REAL pplay(klon, klev) ! pression au milieu de couche (Pa)
57	REAL delp(klon, klev) ! epaisseur de couche en pression (Pa)
58	REAL radsol(klon) ! ray. net au sol (Solaire+IR) W / m2
59	REAL, intent(inout):: albedo(:) ! (knon) albedo de la surface
60	REAL snow(klon) ! hauteur de neige
61	REAL qsurf(klon) ! humidite de l'air au dessus de la surface
62
63	real, intent(in):: precip_rain(klon)
64	! liquid water mass flux (kg / m2 / s), positive down
65
66	real, intent(in):: precip_snow(klon)
67	! solid water mass flux (kg / m2 / s), positive down
68
69	real, intent(inout):: fder(klon)
70	real fluxlat(klon)
71	real pctsrf_new(klon, nbsrf)
72	REAL, intent(inout):: agesno(:) ! (knon)
73	REAL d_t(klon, klev) ! incrementation de "t"
74	REAL d_q(klon, klev) ! incrementation de "q"
75	REAL, intent(out):: d_ts(:) ! (knon) incrementation de "ts"
76	real z0_new(klon)
77	REAL flux_t(klon, klev) ! (diagnostic) flux de la chaleur
78	! sensible, flux de Cp*T, positif vers
79	! le bas: j / (m**2 s) c.a.d.: W / m2
80	REAL flux_q(klon, klev) ! flux de la vapeur d'eau:kg / (m**2 s)
81	REAL dflux_s(klon) ! derivee du flux sensible dF / dTs
82	REAL dflux_l(klon) ! derivee du flux latent dF / dTs
83
84	! Flux d'eau "perdue" par la surface et n\'ecessaire pour que limiter la
85	! hauteur de neige, en kg / m2 / s
86	REAL fqcalving(klon)
87
88	! Flux thermique utiliser pour fondre la neige
89	REAL ffonte(klon)
90
91	REAL run_off_lic_0(klon)! runof glacier au pas de temps precedent
92
93	! Local:
94
95	REAL evap(klon) ! evaporation au sol
96
97	INTEGER i, k
98	REAL zx_cq(klon, klev)
99	REAL zx_dq(klon, klev)
100	REAL zx_ch(klon, klev)
101	REAL zx_dh(klon, klev)
102	REAL zx_buf1(klon)
103	REAL zx_buf2(klon)
104	REAL zx_coef(klon, klev)
105	REAL local_h(klon, klev) ! enthalpie potentielle
106	REAL local_q(klon, klev)
107	REAL local_ts(klon)
108	REAL psref(klon) ! pression de reference pour temperature potent.
109	REAL zx_pkh(klon, klev), zx_pkf(klon, klev)
110
111	! contre-gradient pour la vapeur d'eau: (kg / kg) / metre
112	REAL gamq(klon, 2:klev)
113	! contre-gradient pour la chaleur sensible: Kelvin / metre
114	REAL gamt(klon, 2:klev)
115	REAL z_gamaq(klon, 2:klev), z_gamah(klon, 2:klev)
116	REAL zdelz
117
118	real zlev1(klon)
119	real temp_air(klon), spechum(klon)
120	real epot_air(klon), ccanopy(klon)
121	real tq_cdrag(klon), petAcoef(klon), peqAcoef(klon)
122	real petBcoef(klon), peqBcoef(klon)
123	real p1lay(klon)
124
125	real fluxsens(klon)
126	real tsurf_new(knon)
127	real zzpk
128
129	!----------------------------------------------------------------
130
131	if (iflag_pbl == 1) then
132	do k = 3, klev
133	do i = 1, knon
134	gamq(i, k)= 0.0
135	gamt(i, k)= - 1.0e-03
136	enddo
137	enddo
138	do i = 1, knon
139	gamq(i, 2) = 0.0
140	gamt(i, 2) = - 2.5e-03
141	enddo
142	else
143	do k = 2, klev
144	do i = 1, knon
145	gamq(i, k) = 0.0
146	gamt(i, k) = 0.0
147	enddo
148	enddo
149	endif
150
151	DO i = 1, knon
152	psref(i) = paprs(i, 1) !pression de reference est celle au sol
153	local_ts(i) = ts(i)
154	ENDDO
155	DO k = 1, klev
156	DO i = 1, knon
157	zx_pkh(i, k) = (psref(i) / paprs(i, k))**RKAPPA
158	zx_pkf(i, k) = (psref(i) / pplay(i, k))**RKAPPA
159	local_h(i, k) = RCPD * t(i, k) * zx_pkf(i, k)
160	local_q(i, k) = q(i, k)
161	ENDDO
162	ENDDO
163
164	! Convertir les coefficients en variables convenables au calcul:
165
166	DO k = 2, klev
167	DO i = 1, knon
168	zx_coef(i, k) = coef(i, k)*RG / (pplay(i, k - 1) - pplay(i, k)) &
169	(paprs(i, k)2 / (t(i, k)+t(i, k - 1)) / RD)**2
170	zx_coef(i, k) = zx_coef(i, k) * dtime*RG
171	ENDDO
172	ENDDO
173
174	! Preparer les flux lies aux contre-gardients
175
176	DO k = 2, klev
177	DO i = 1, knon
178	zdelz = RD * (t(i, k - 1)+t(i, k)) / 2.0 / RG / paprs(i, k) &
179	*(pplay(i, k - 1) - pplay(i, k))
180	z_gamaq(i, k) = gamq(i, k) * zdelz
181	z_gamah(i, k) = gamt(i, k) * zdelz RCPD zx_pkh(i, k)
182	ENDDO
183	ENDDO
184	DO i = 1, knon
185	zx_buf1(i) = zx_coef(i, klev) + delp(i, klev)
186	zx_cq(i, klev) = (local_q(i, klev)*delp(i, klev) &
187	- zx_coef(i, klev)*z_gamaq(i, klev)) / zx_buf1(i)
188	zx_dq(i, klev) = zx_coef(i, klev) / zx_buf1(i)
189
190	zzpk=(pplay(i, klev) / psref(i))**RKAPPA
191	zx_buf2(i) = zzpk*delp(i, klev) + zx_coef(i, klev)
192	zx_ch(i, klev) = (local_h(i, klev)zzpkdelp(i, klev) &
193	- zx_coef(i, klev)*z_gamah(i, klev)) / zx_buf2(i)
194	zx_dh(i, klev) = zx_coef(i, klev) / zx_buf2(i)
195	ENDDO
196	DO k = klev - 1, 2, - 1
197	DO i = 1, knon
198	zx_buf1(i) = delp(i, k)+zx_coef(i, k) &
199	+zx_coef(i, k+1)*(1. - zx_dq(i, k+1))
200	zx_cq(i, k) = (local_q(i, k)*delp(i, k) &
201	+zx_coef(i, k+1)*zx_cq(i, k+1) &
202	+zx_coef(i, k+1)*z_gamaq(i, k+1) &
203	- zx_coef(i, k)*z_gamaq(i, k)) / zx_buf1(i)
204	zx_dq(i, k) = zx_coef(i, k) / zx_buf1(i)
205
206	zzpk=(pplay(i, k) / psref(i))**RKAPPA
207	zx_buf2(i) = zzpk*delp(i, k)+zx_coef(i, k) &
208	+zx_coef(i, k+1)*(1. - zx_dh(i, k+1))
209	zx_ch(i, k) = (local_h(i, k)zzpkdelp(i, k) &
210	+zx_coef(i, k+1)*zx_ch(i, k+1) &
211	+zx_coef(i, k+1)*z_gamah(i, k+1) &
212	- zx_coef(i, k)*z_gamah(i, k)) / zx_buf2(i)
213	zx_dh(i, k) = zx_coef(i, k) / zx_buf2(i)
214	ENDDO
215	ENDDO
216
217	DO i = 1, knon
218	zx_buf1(i) = delp(i, 1) + zx_coef(i, 2)*(1. - zx_dq(i, 2))
219	zx_cq(i, 1) = (local_q(i, 1)*delp(i, 1) &
220	+zx_coef(i, 2)*(z_gamaq(i, 2)+zx_cq(i, 2))) &
221	/ zx_buf1(i)
222	zx_dq(i, 1) = - 1. * RG / zx_buf1(i)
223
224	zzpk=(pplay(i, 1) / psref(i))**RKAPPA
225	zx_buf2(i) = zzpkdelp(i, 1) + zx_coef(i, 2)(1. - zx_dh(i, 2))
226	zx_ch(i, 1) = (local_h(i, 1)zzpkdelp(i, 1) &
227	+zx_coef(i, 2)*(z_gamah(i, 2)+zx_ch(i, 2))) &
228	/ zx_buf2(i)
229	zx_dh(i, 1) = - 1. * RG / zx_buf2(i)
230	ENDDO
231
232	! Appel a interfsurf (appel generique) routine d'interface avec la surface
233
234	! initialisation
235	petAcoef =0.
236	peqAcoef = 0.
237	petBcoef =0.
238	peqBcoef = 0.
239	p1lay =0.
240
241	petAcoef(1:knon) = zx_ch(1:knon, 1)
242	peqAcoef(1:knon) = zx_cq(1:knon, 1)
243	petBcoef(1:knon) = zx_dh(1:knon, 1)
244	peqBcoef(1:knon) = zx_dq(1:knon, 1)
245	tq_cdrag(1:knon) =coef(:knon, 1)
246	temp_air(1:knon) =t(1:knon, 1)
247	epot_air(1:knon) =local_h(1:knon, 1)
248	spechum(1:knon)=q(1:knon, 1)
249	p1lay(1:knon) = pplay(1:knon, 1)
250	zlev1(1:knon) = delp(1:knon, 1)
251
252	ccanopy = co2_ppm
253
254	CALL interfsurf_hq(itime, dtime, jour, rmu0, nisurf, knon, knindex, &
255	pctsrf, rlat, debut, nsoilmx, tsoil, qsol, u1lay, v1lay, temp_air, &
256	spechum, tq_cdrag, petAcoef, peqAcoef, petBcoef, peqBcoef, &
257	precip_rain, precip_snow, fder, rugos, rugoro, snow, qsurf, &
258	ts(:knon), p1lay, psref, radsol, evap, fluxsens, fluxlat, dflux_l, &
259	dflux_s, tsurf_new, albedo, z0_new, pctsrf_new, agesno, fqcalving, &
260	ffonte, run_off_lic_0)
261
262	flux_t(:knon, 1) = fluxsens(:knon)
263	flux_q(:knon, 1) = - evap(:knon)
264	d_ts = tsurf_new - ts(:knon)
265
266	!==== une fois on a zx_h_ts, on peut faire l'iteration ========
267	DO i = 1, knon
268	local_h(i, 1) = zx_ch(i, 1) + zx_dh(i, 1)flux_t(i, 1)dtime
269	local_q(i, 1) = zx_cq(i, 1) + zx_dq(i, 1)flux_q(i, 1)dtime
270	ENDDO
271	DO k = 2, klev
272	DO i = 1, knon
273	local_q(i, k) = zx_cq(i, k) + zx_dq(i, k)*local_q(i, k - 1)
274	local_h(i, k) = zx_ch(i, k) + zx_dh(i, k)*local_h(i, k - 1)
275	ENDDO
276	ENDDO
277
278	!== flux_q est le flux de vapeur d'eau: kg / (m**2 s) positive vers bas
279	!== flux_t est le flux de cpt (energie sensible): j / (m**2 s)
280	DO k = 2, klev
281	DO i = 1, knon
282	flux_q(i, k) = (zx_coef(i, k) / RG / dtime) &
283	* (local_q(i, k) - local_q(i, k - 1)+z_gamaq(i, k))
284	flux_t(i, k) = (zx_coef(i, k) / RG / dtime) &
285	* (local_h(i, k) - local_h(i, k - 1)+z_gamah(i, k)) &
286	/ zx_pkh(i, k)
287	ENDDO
288	ENDDO
289
290	! Calcul tendances
291	DO k = 1, klev
292	DO i = 1, knon
293	d_t(i, k) = local_h(i, k) / zx_pkf(i, k) / RCPD - t(i, k)
294	d_q(i, k) = local_q(i, k) - q(i, k)
295	ENDDO
296	ENDDO
297
298	END SUBROUTINE clqh
299
300	end module clqh_m