phylmd/Interface_surf/interfsurf_hq.f

module interfsurf_hq_m

  implicit none

contains

  SUBROUTINE interfsurf_hq(julien, mu0, nisurf, knindex, tsoil, qsol, u1_lay, &
       v1_lay, temp_air, spechum, tq_cdrag, tAcoef, qAcoef, tBcoef, qBcoef, &
       precip_rain, precip_snow, rugos, rugoro, snow, qsurf, ts, p1lay, ps, &
       radsol, evap, flux_t, fluxlat, dflux_l, dflux_s, tsurf_new, albedo, &
       z0_new, pctsrf_new_sic, agesno, fqcalving, ffonte, run_off_lic_0, &
       run_off_lic)

    ! Cette routine sert d'aiguillage entre l'atmosph\`ere et la surface
    ! en g\'en\'eral (sols continentaux, oc\'eans, glaces) pour les flux de
    ! chaleur et d'humidit\'e.

    ! Laurent Fairhead, February 2000

    USE abort_gcm_m, ONLY: abort_gcm
    use alboc_cd_m, only: alboc_cd
    USE albsno_m, ONLY: albsno
    USE calcul_fluxs_m, ONLY: calcul_fluxs
    USE fonte_neige_m, ONLY: fonte_neige
    USE indicesol, ONLY: epsfra, is_lic, is_oce, is_sic, is_ter
    USE interfsur_lim_m, ONLY: interfsur_lim
    use limit_read_sst_m, only: limit_read_sst
    use soil_m, only: soil
    USE suphec_m, ONLY: rcpd, rtt

    integer, intent(IN):: julien ! jour dans l'annee en cours
    real, intent(IN):: mu0(:) ! (knon) cosinus de l'angle solaire zenithal
    integer, intent(IN):: nisurf ! index de la surface a traiter

    integer, intent(in):: knindex(:) ! (knon)
    ! index des points de la surface a traiter

    REAL, intent(inout):: tsoil(:, :) ! (knon, nsoilmx)

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

    real, intent(IN):: u1_lay(:), v1_lay(:) ! (knon) vitesse 1ere couche

    real, intent(IN):: temp_air(:) ! (knon) temperature de l'air 1ere couche
    real, intent(IN):: spechum(:) ! (knon) humidite specifique 1ere couche
    real, intent(IN):: tq_cdrag(:) ! (knon) coefficient d'echange

    real, intent(IN):: tAcoef(:), qAcoef(:) ! (knon)
    ! coefficients A de la r\'esolution de la couche limite pour t et q

    real, intent(IN):: tBcoef(:), qBcoef(:) ! (knon)
    ! coefficients B de la r\'esolution de la couche limite pour t et q

    real, intent(IN):: precip_rain(:) ! (knon)
    ! precipitation, liquid water mass flux (kg / m2 / s), positive down

    real, intent(IN):: precip_snow(:) ! (knon)
    ! precipitation, solid water mass flux (kg / m2 / s), positive down

    real, intent(IN):: rugos(:) ! (knon) rugosite
    real, intent(IN):: rugoro(:) ! (knon) rugosite orographique
    real, intent(INOUT):: snow(:) ! (knon)
    real, intent(OUT):: qsurf(:) ! (knon)
    real, intent(IN):: ts(:) ! (knon) temp\'erature de surface
    real, intent(IN):: p1lay(:) ! (knon) pression 1er niveau (milieu de couche)
    real, intent(IN):: ps(:) ! (knon) pression au sol
    REAL, INTENT(IN):: radsol(:) ! (knon) rayonnement net au sol (LW + SW)
    real, intent(OUT):: evap(:) ! (knon) evaporation totale

    real, intent(OUT):: flux_t(:) ! (knon) flux de chaleur sensible
    ! (Cp T) à la surface, positif vers le bas, W / m2

    real, intent(OUT):: fluxlat(:) ! (knon) flux de chaleur latente
    real, intent(OUT):: dflux_l(:), dflux_s(:) ! (knon)
    real, intent(OUT):: tsurf_new(:) ! (knon) temp\'erature au sol
    real, intent(OUT):: albedo(:) ! (knon) albedo
    real, intent(OUT):: z0_new(:) ! (knon) surface roughness

    real, intent(in):: pctsrf_new_sic(:) ! (knon) 
    ! nouvelle repartition des surfaces

    real, intent(INOUT):: agesno(:) ! (knon)

    real, intent(OUT):: fqcalving(:) ! (knon)
    ! Flux d'eau "perdue" par la surface et n\'ecessaire pour limiter la
    ! hauteur de neige, en kg / m2 / s

    real, intent(OUT):: ffonte(:) ! (knon)
    ! flux thermique utilis\'e pour fondre la neige

    real, intent(INOUT):: run_off_lic_0(:) ! (knon)
    ! run_off_lic_0 runoff glacier du pas de temps precedent

    REAL, intent(OUT):: run_off_lic(:) ! (knon) ruissellement total

    ! Local:
    REAL soilcap(size(knindex)) ! (knon)
    REAL soilflux(size(knindex)) ! (knon)
    integer ii
    real cal(size(knindex)) ! (knon)
    real beta(size(knindex)) ! (knon) evap reelle
    real tsurf(size(knindex)) ! (knon)
    real alb_neig(size(knindex)) ! (knon)
    real zfra(size(knindex)) ! (knon)
    REAL, PARAMETER:: fmagic = 1. ! facteur magique pour r\'egler l'alb\'edo
    REAL, PARAMETER:: max_eau_sol = 150. ! in kg m-2
    REAL, PARAMETER:: tau_gl = 86400. * 5.

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

    select case (nisurf)
    case (is_ter)
       ! Surface "terre", appel \`a l'interface avec les sols continentaux

       ! Calcul age de la neige

       ! Read albedo from the file containing boundary conditions then
       ! add the albedo of snow:

       call interfsur_lim(julien, knindex, albedo, z0_new)

       beta = min(2. * qsol / max_eau_sol, 1.)
       CALL soil(is_ter, snow, ts, tsoil, soilcap, soilflux)
       cal = RCPD / soilcap

       CALL calcul_fluxs(ts, p1lay, cal, beta, tq_cdrag, ps, qsurf, &
            radsol + soilflux, temp_air, spechum, u1_lay, v1_lay, tAcoef, &
            qAcoef, tBcoef, qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, &
            dflux_l, dif_grnd = 0.)
       CALL fonte_neige(is_ter, precip_rain, precip_snow, snow, qsol, &
            tsurf_new, evap, fqcalving, ffonte, run_off_lic_0, run_off_lic)

       call albsno(agesno, alb_neig, precip_snow)
       where (snow < 0.0001) agesno = 0.
       zfra = max(0., min(1., snow / (snow + 10.)))
       albedo = alb_neig * zfra + albedo * (1. - zfra)
       z0_new = sqrt(z0_new**2 + rugoro**2)
    case (is_oce)
       ! Surface "oc\'ean", appel \`a l'interface avec l'oc\'ean

       ffonte = 0.
       call limit_read_sst(julien, knindex, tsurf)
       cal = 0.
       beta = 1.
       call calcul_fluxs(tsurf, p1lay, cal, beta, tq_cdrag, ps, qsurf, radsol, &
            temp_air, spechum, u1_lay, v1_lay, tAcoef, qAcoef, tBcoef, qBcoef, &
            tsurf_new, evap, fluxlat, flux_t, dflux_s, dflux_l, dif_grnd = 0.)
       agesno = 0.
       albedo = alboc_cd(mu0) * fmagic
       z0_new = sqrt(rugos**2 + rugoro**2)
       fqcalving = 0.
    case (is_sic)
       ! Surface "glace de mer" appel a l'interface avec l'ocean

       DO ii = 1, size(knindex)
          IF (pctsrf_new_sic(ii) < EPSFRA) then
             snow(ii) = 0.
             tsurf_new(ii) = RTT - 1.8
             tsoil(ii, :) = RTT - 1.8
          else
             tsurf_new(ii) = ts(ii)
          endif
       enddo

       CALL soil(is_sic, snow, tsurf_new, tsoil, soilcap, soilflux)
       cal = RCPD / soilcap
       tsurf = tsurf_new
       beta = 1.
       CALL calcul_fluxs(tsurf, p1lay, cal, beta, tq_cdrag, ps, qsurf, &
            radsol + soilflux, temp_air, spechum, u1_lay, v1_lay, tAcoef, &
            qAcoef, tBcoef, qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, &
            dflux_l, dif_grnd = 1. / tau_gl)
       CALL fonte_neige(is_sic, precip_rain, precip_snow, snow, qsol, &
            tsurf_new, evap, fqcalving, ffonte, run_off_lic_0, run_off_lic)

       ! Compute the albedo:

       CALL albsno(agesno, alb_neig, precip_snow)
       WHERE (snow < 0.0001) agesno = 0.
       zfra = MAX(0., MIN(1., snow / (snow + 10.)))
       albedo = alb_neig * zfra + 0.6 * (1. - zfra)

       z0_new = SQRT(0.002**2 + rugoro**2)
    case (is_lic)
       ! Surface "glacier continentaux" appel a l'interface avec le sol

       CALL soil(is_lic, snow, ts, tsoil, soilcap, soilflux)
       cal = RCPD / soilcap
       beta = 1.
       call calcul_fluxs(ts, p1lay, cal, beta, tq_cdrag, ps, qsurf, &
            radsol + soilflux, temp_air, spechum, u1_lay, v1_lay, tAcoef, &
            qAcoef, tBcoef, qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, &
            dflux_l, dif_grnd = 0.)
       call fonte_neige(is_lic, precip_rain, precip_snow, snow, qsol, &
            tsurf_new, evap, fqcalving, ffonte, run_off_lic_0, run_off_lic)

       ! calcul albedo
       CALL albsno(agesno, alb_neig, precip_snow)
       WHERE (snow < 0.0001) agesno = 0.
       albedo = 0.77

       ! Rugosite
       z0_new = rugoro
    case default
       print *, 'Index surface = ', nisurf
       call abort_gcm("interfsurf_hq", 'Index surface non valable')
    end select

  END SUBROUTINE interfsurf_hq

end module interfsurf_hq_m
1	guez	54	module interfsurf_hq_m
2
3			implicit none
4
5			contains
6
7	guez	301	SUBROUTINE interfsurf_hq(julien, mu0, nisurf, knindex, tsoil, qsol, u1_lay, &
8			v1_lay, temp_air, spechum, tq_cdrag, tAcoef, qAcoef, tBcoef, qBcoef, &
9			precip_rain, precip_snow, rugos, rugoro, snow, qsurf, ts, p1lay, ps, &
10			radsol, evap, flux_t, fluxlat, dflux_l, dflux_s, tsurf_new, albedo, &
11			z0_new, pctsrf_new_sic, agesno, fqcalving, ffonte, run_off_lic_0, &
12			run_off_lic)
13	guez	54
14	guez	150	! Cette routine sert d'aiguillage entre l'atmosph\`ere et la surface
15			! en g\'en\'eral (sols continentaux, oc\'eans, glaces) pour les flux de
16			! chaleur et d'humidit\'e.
17	guez	54
18	guez	104	! Laurent Fairhead, February 2000
19	guez	54
20	guez	72	USE abort_gcm_m, ONLY: abort_gcm
21	guez	154	use alboc_cd_m, only: alboc_cd
22	guez	72	USE albsno_m, ONLY: albsno
23			USE calcul_fluxs_m, ONLY: calcul_fluxs
24			USE fonte_neige_m, ONLY: fonte_neige
25	guez	207	USE indicesol, ONLY: epsfra, is_lic, is_oce, is_sic, is_ter
26	guez	72	USE interfsur_lim_m, ONLY: interfsur_lim
27	guez	293	use limit_read_sst_m, only: limit_read_sst
28	guez	101	use soil_m, only: soil
29	guez	178	USE suphec_m, ONLY: rcpd, rtt
30	guez	54
31	guez	221	integer, intent(IN):: julien ! jour dans l'annee en cours
32	guez	300	real, intent(IN):: mu0(:) ! (knon) cosinus de l'angle solaire zenithal
33	guez	101	integer, intent(IN):: nisurf ! index de la surface a traiter
34
35	guez	106	integer, intent(in):: knindex(:) ! (knon)
36	guez	101	! index des points de la surface a traiter
37
38	guez	208	REAL, intent(inout):: tsoil(:, :) ! (knon, nsoilmx)
39	guez	101
40	guez	225	REAL, intent(INOUT):: qsol(:) ! (knon)
41	guez	101	! column-density of water in soil, in kg m-2
42
43	guez	225	real, intent(IN):: u1_lay(:), v1_lay(:) ! (knon) vitesse 1ere couche
44
45	guez	281	real, intent(IN):: temp_air(:) ! (knon) temperature de l'air 1ere couche
46			real, intent(IN):: spechum(:) ! (knon) humidite specifique 1ere couche
47	guez	230	real, intent(IN):: tq_cdrag(:) ! (knon) coefficient d'echange
48	guez	215
49	guez	299	real, intent(IN):: tAcoef(:), qAcoef(:) ! (knon)
50	guez	215	! coefficients A de la r\'esolution de la couche limite pour t et q
51
52	guez	299	real, intent(IN):: tBcoef(:), qBcoef(:) ! (knon)
53	guez	215	! coefficients B de la r\'esolution de la couche limite pour t et q
54	guez	101
55	guez	300	real, intent(IN):: precip_rain(:) ! (knon)
56	guez	175	! precipitation, liquid water mass flux (kg / m2 / s), positive down
57	guez	101
58	guez	300	real, intent(IN):: precip_snow(:) ! (knon)
59	guez	175	! precipitation, solid water mass flux (kg / m2 / s), positive down
60	guez	101
61	guez	282	real, intent(IN):: rugos(:) ! (knon) rugosite
62			real, intent(IN):: rugoro(:) ! (knon) rugosite orographique
63	guez	215	real, intent(INOUT):: snow(:) ! (knon)
64	guez	283	real, intent(OUT):: qsurf(:) ! (knon)
65	guez	221	real, intent(IN):: ts(:) ! (knon) temp\'erature de surface
66	guez	281	real, intent(IN):: p1lay(:) ! (knon) pression 1er niveau (milieu de couche)
67	guez	280	real, intent(IN):: ps(:) ! (knon) pression au sol
68	guez	267	REAL, INTENT(IN):: radsol(:) ! (knon) rayonnement net au sol (LW + SW)
69	guez	206	real, intent(OUT):: evap(:) ! (knon) evaporation totale
70	guez	214
71	guez	206	real, intent(OUT):: flux_t(:) ! (knon) flux de chaleur sensible
72	guez	214	! (Cp T) à la surface, positif vers le bas, W / m2
73	guez	267
74	guez	214	real, intent(OUT):: fluxlat(:) ! (knon) flux de chaleur latente
75	guez	222	real, intent(OUT):: dflux_l(:), dflux_s(:) ! (knon)
76	guez	207	real, intent(OUT):: tsurf_new(:) ! (knon) temp\'erature au sol
77	guez	156	real, intent(OUT):: albedo(:) ! (knon) albedo
78	guez	282	real, intent(OUT):: z0_new(:) ! (knon) surface roughness
79	guez	202
80	guez	300	real, intent(in):: pctsrf_new_sic(:) ! (knon)
81	guez	202	! nouvelle repartition des surfaces
82
83	guez	175	real, intent(INOUT):: agesno(:) ! (knon)
84	guez	54
85	guez	282	real, intent(OUT):: fqcalving(:) ! (knon)
86	guez	215	! Flux d'eau "perdue" par la surface et n\'ecessaire pour limiter la
87	guez	175	! hauteur de neige, en kg / m2 / s
88	guez	99
89	guez	300	real, intent(OUT):: ffonte(:) ! (knon)
90			! flux thermique utilis\'e pour fondre la neige
91	guez	99
92	guez	300	real, intent(INOUT):: run_off_lic_0(:) ! (knon)
93	guez	99	! run_off_lic_0 runoff glacier du pas de temps precedent
94
95	guez	301	REAL, intent(OUT):: run_off_lic(:) ! (knon) ruissellement total
96
97	guez	99	! Local:
98	guez	222	REAL soilcap(size(knindex)) ! (knon)
99			REAL soilflux(size(knindex)) ! (knon)
100	guez	175	integer ii
101	guez	222	real cal(size(knindex)) ! (knon)
102			real beta(size(knindex)) ! (knon) evap reelle
103			real tsurf(size(knindex)) ! (knon)
104			real alb_neig(size(knindex)) ! (knon)
105			real zfra(size(knindex)) ! (knon)
106	guez	208	REAL, PARAMETER:: fmagic = 1. ! facteur magique pour r\'egler l'alb\'edo
107	guez	268	REAL, PARAMETER:: max_eau_sol = 150. ! in kg m-2
108	guez	269	REAL, PARAMETER:: tau_gl = 86400. * 5.
109	guez	54
110			!-------------------------------------------------------------
111
112	guez	104	select case (nisurf)
113			case (is_ter)
114	guez	171	! Surface "terre", appel \`a l'interface avec les sols continentaux
115	guez	54
116			! Calcul age de la neige
117
118	guez	174	! Read albedo from the file containing boundary conditions then
119			! add the albedo of snow:
120
121	guez	301	call interfsur_lim(julien, knindex, albedo, z0_new)
122	guez	54
123	guez	268	beta = min(2. * qsol / max_eau_sol, 1.)
124	guez	299	CALL soil(is_ter, snow, ts, tsoil, soilcap, soilflux)
125	guez	267	cal = RCPD / soilcap
126	guez	171
127	guez	299	CALL calcul_fluxs(ts, p1lay, cal, beta, tq_cdrag, ps, qsurf, &
128	guez	300	radsol + soilflux, temp_air, spechum, u1_lay, v1_lay, tAcoef, &
129			qAcoef, tBcoef, qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, &
130			dflux_l, dif_grnd = 0.)
131			CALL fonte_neige(is_ter, precip_rain, precip_snow, snow, qsol, &
132	guez	301	tsurf_new, evap, fqcalving, ffonte, run_off_lic_0, run_off_lic)
133	guez	54
134	guez	300	call albsno(agesno, alb_neig, precip_snow)
135	guez	215	where (snow < 0.0001) agesno = 0.
136			zfra = max(0., min(1., snow / (snow + 10.)))
137	guez	174	albedo = alb_neig * zfra + albedo * (1. - zfra)
138	guez	101	z0_new = sqrt(z0_new2 + rugoro2)
139	guez	104	case (is_oce)
140	guez	175	! Surface "oc\'ean", appel \`a l'interface avec l'oc\'ean
141
142	guez	300	ffonte = 0.
143	guez	293	call limit_read_sst(julien, knindex, tsurf)
144	guez	54	cal = 0.
145			beta = 1.
146	guez	299	call calcul_fluxs(tsurf, p1lay, cal, beta, tq_cdrag, ps, qsurf, radsol, &
147	guez	300	temp_air, spechum, u1_lay, v1_lay, tAcoef, qAcoef, tBcoef, qBcoef, &
148			tsurf_new, evap, fluxlat, flux_t, dflux_s, dflux_l, dif_grnd = 0.)
149	guez	54	agesno = 0.
150	guez	300	albedo = alboc_cd(mu0) * fmagic
151	guez	54	z0_new = sqrt(rugos2 + rugoro2)
152	guez	279	fqcalving = 0.
153	guez	104	case (is_sic)
154	guez	54	! Surface "glace de mer" appel a l'interface avec l'ocean
155
156	guez	301	DO ii = 1, size(knindex)
157	guez	300	IF (pctsrf_new_sic(ii) < EPSFRA) then
158	guez	175	snow(ii) = 0.
159	guez	99	tsurf_new(ii) = RTT - 1.8
160	guez	267	tsoil(ii, :) = RTT - 1.8
161	guez	221	else
162			tsurf_new(ii) = ts(ii)
163	guez	99	endif
164			enddo
165	guez	54
166	guez	299	CALL soil(is_sic, snow, tsurf_new, tsoil, soilcap, soilflux)
167	guez	267	cal = RCPD / soilcap
168	guez	222	tsurf = tsurf_new
169	guez	175	beta = 1.
170	guez	299	CALL calcul_fluxs(tsurf, p1lay, cal, beta, tq_cdrag, ps, qsurf, &
171	guez	300	radsol + soilflux, temp_air, spechum, u1_lay, v1_lay, tAcoef, &
172			qAcoef, tBcoef, qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, &
173			dflux_l, dif_grnd = 1. / tau_gl)
174			CALL fonte_neige(is_sic, precip_rain, precip_snow, snow, qsol, &
175	guez	301	tsurf_new, evap, fqcalving, ffonte, run_off_lic_0, run_off_lic)
176	guez	54
177	guez	174	! Compute the albedo:
178	guez	54
179	guez	300	CALL albsno(agesno, alb_neig, precip_snow)
180	guez	215	WHERE (snow < 0.0001) agesno = 0.
181			zfra = MAX(0., MIN(1., snow / (snow + 10.)))
182	guez	175	albedo = alb_neig * zfra + 0.6 * (1. - zfra)
183	guez	54
184	guez	191	z0_new = SQRT(0.0022 + rugoro2)
185	guez	104	case (is_lic)
186	guez	54	! Surface "glacier continentaux" appel a l'interface avec le sol
187
188	guez	299	CALL soil(is_lic, snow, ts, tsoil, soilcap, soilflux)
189	guez	267	cal = RCPD / soilcap
190	guez	175	beta = 1.
191	guez	299	call calcul_fluxs(ts, p1lay, cal, beta, tq_cdrag, ps, qsurf, &
192	guez	300	radsol + soilflux, temp_air, spechum, u1_lay, v1_lay, tAcoef, &
193			qAcoef, tBcoef, qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, &
194			dflux_l, dif_grnd = 0.)
195			call fonte_neige(is_lic, precip_rain, precip_snow, snow, qsol, &
196	guez	301	tsurf_new, evap, fqcalving, ffonte, run_off_lic_0, run_off_lic)
197	guez	54
198			! calcul albedo
199	guez	300	CALL albsno(agesno, alb_neig, precip_snow)
200	guez	215	WHERE (snow < 0.0001) agesno = 0.
201	guez	156	albedo = 0.77
202	guez	54
203			! Rugosite
204			z0_new = rugoro
205	guez	104	case default
206	guez	101	print *, 'Index surface = ', nisurf
207	guez	175	call abort_gcm("interfsurf_hq", 'Index surface non valable')
208	guez	104	end select
209	guez	54
210			END SUBROUTINE interfsurf_hq
211
212			end module interfsurf_hq_m