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surf_landice_mod.F90 @ 4835

Last change on this file since 4835 was 4835, checked in by evignon, 3 months ago
commission pour la suite du travail sur la mise a jour de la param de neige soufflee
Property copyright set to Name of program: LMDZ Creation date: 1984 Version: LMDZ5 License: CeCILL version 2 Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539 See the license file in the root directory Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 22.3 KB

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1	!
2	MODULE surf_landice_mod
3
4	IMPLICIT NONE
5
6	CONTAINS
7	!
8	!****************************************************************************************
9	!
10	SUBROUTINE surf_landice(itime, dtime, knon, knindex, &
11	rlon, rlat, debut, lafin, &
12	rmu0, lwdownm, albedo, pphi1, &
13	swnet, lwnet, tsurf, p1lay, &
14	cdragh, cdragm, precip_rain, precip_snow, precip_bs, temp_air, spechum, &
15	AcoefH, AcoefQ, BcoefH, BcoefQ, &
16	AcoefU, AcoefV, BcoefU, BcoefV, &
17	AcoefQBS, BcoefQBS, &
18	ps, u1, v1, gustiness, rugoro, pctsrf, &
19	snow, qsurf, qsol, qbs1, agesno, &
20	tsoil, z0m, z0h, SFRWL, alb_dir, alb_dif, evap, fluxsens, fluxlat, fluxbs, &
21	tsurf_new, dflux_s, dflux_l, &
22	alt, slope, cloudf, &
23	snowhgt, qsnow, to_ice, sissnow, &
24	alb3, runoff, &
25	flux_u1, flux_v1)
26
27	USE dimphy
28	USE geometry_mod, ONLY : longitude,latitude
29	USE surface_data, ONLY : type_ocean, calice, calsno, landice_opt, iflag_albcalc
30	USE fonte_neige_mod, ONLY : fonte_neige,run_off_lic,fqcalving_global,ffonte_global,fqfonte_global,runofflic_global
31	USE cpl_mod, ONLY : cpl_send_landice_fields
32	USE calcul_fluxs_mod
33	USE phys_local_var_mod, ONLY : zxrhoslic, zxustartlic, zxqsaltlic
34	USE phys_output_var_mod, ONLY : snow_o,zfra_o
35	!FC
36	USE ioipsl_getin_p_mod, ONLY : getin_p
37	USE lmdz_blowing_snow_ini, ONLY : c_esalt_bs, zeta_bs, pbst_bs, prt_bs, rhoice_bs, rhohard_bs
38	USE lmdz_blowing_snow_ini, ONLY : rhofresh_bs, tau_eqsalt_bs, tau_dens0_bs, tau_densmin_bs
39	#ifdef CPP_INLANDSIS
40	USE surf_inlandsis_mod, ONLY : surf_inlandsis
41	#endif
42
43	USE indice_sol_mod
44
45	! INCLUDE "indicesol.h"
46	INCLUDE "dimsoil.h"
47	INCLUDE "YOMCST.h"
48	INCLUDE "clesphys.h"
49
50	! Input variables
51	!****************************************************************************************
52	INTEGER, INTENT(IN) :: itime, knon
53	INTEGER, DIMENSION(klon), INTENT(in) :: knindex
54	REAL, INTENT(in) :: dtime
55	REAL, DIMENSION(klon), INTENT(IN) :: swnet ! net shortwave radiance
56	REAL, DIMENSION(klon), INTENT(IN) :: lwnet ! net longwave radiance
57	REAL, DIMENSION(klon), INTENT(IN) :: tsurf
58	REAL, DIMENSION(klon), INTENT(IN) :: p1lay
59	REAL, DIMENSION(klon), INTENT(IN) :: cdragh, cdragm
60	REAL, DIMENSION(klon), INTENT(IN) :: precip_rain, precip_snow, precip_bs
61	REAL, DIMENSION(klon), INTENT(IN) :: temp_air, spechum
62	REAL, DIMENSION(klon), INTENT(IN) :: AcoefH, AcoefQ
63	REAL, DIMENSION(klon), INTENT(IN) :: BcoefH, BcoefQ
64	REAL, DIMENSION(klon), INTENT(IN) :: AcoefU, AcoefV, BcoefU, BcoefV
65	REAL, DIMENSION(klon), INTENT(IN) :: AcoefQBS, BcoefQBS
66	REAL, DIMENSION(klon), INTENT(IN) :: ps
67	REAL, DIMENSION(klon), INTENT(IN) :: u1, v1, gustiness, qbs1
68	REAL, DIMENSION(klon), INTENT(IN) :: rugoro
69	REAL, DIMENSION(klon,nbsrf), INTENT(IN) :: pctsrf
70
71	LOGICAL, INTENT(IN) :: debut !true if first step
72	LOGICAL, INTENT(IN) :: lafin !true if last step
73	REAL, DIMENSION(klon), INTENT(IN) :: rlon, rlat
74	REAL, DIMENSION(klon), INTENT(IN) :: rmu0
75	REAL, DIMENSION(klon), INTENT(IN) :: lwdownm !ylwdown
76	REAL, DIMENSION(klon), INTENT(IN) :: albedo !mean albedo
77	REAL, DIMENSION(klon), INTENT(IN) :: pphi1
78	REAL, DIMENSION(klon), INTENT(IN) :: alt !mean altitude of the grid box
79	REAL, DIMENSION(klon), INTENT(IN) :: slope !mean slope in grid box
80	REAL, DIMENSION(klon), INTENT(IN) :: cloudf !total cloud fraction
81
82	! In/Output variables
83	!****************************************************************************************
84	REAL, DIMENSION(klon), INTENT(INOUT) :: snow, qsol
85	REAL, DIMENSION(klon), INTENT(INOUT) :: agesno
86	REAL, DIMENSION(klon, nsoilmx), INTENT(INOUT) :: tsoil
87
88	! Output variables
89	!****************************************************************************************
90	REAL, DIMENSION(klon), INTENT(OUT) :: qsurf
91	REAL, DIMENSION(klon), INTENT(OUT) :: z0m, z0h
92	!albedo SB >>>
93	! REAL, DIMENSION(klon), INTENT(OUT) :: alb1 ! new albedo in visible SW interval
94	! REAL, DIMENSION(klon), INTENT(OUT) :: alb2 ! new albedo in near IR interval
95	REAL, DIMENSION(6), INTENT(IN) :: SFRWL
96	REAL, DIMENSION(klon,nsw), INTENT(OUT) :: alb_dir,alb_dif
97	!albedo SB <<<
98	REAL, DIMENSION(klon), INTENT(OUT) :: evap, fluxsens, fluxlat
99	REAL, DIMENSION(klon), INTENT(OUT) :: fluxbs
100	REAL, DIMENSION(klon), INTENT(OUT) :: tsurf_new
101	REAL, DIMENSION(klon), INTENT(OUT) :: dflux_s, dflux_l
102	REAL, DIMENSION(klon), INTENT(OUT) :: flux_u1, flux_v1
103
104	REAL, DIMENSION(klon), INTENT(OUT) :: alb3
105	REAL, DIMENSION(klon), INTENT(OUT) :: qsnow !column water in snow [kg/m2]
106	REAL, DIMENSION(klon), INTENT(OUT) :: snowhgt !Snow height (m)
107	REAL, DIMENSION(klon), INTENT(OUT) :: to_ice
108	REAL, DIMENSION(klon), INTENT(OUT) :: sissnow
109	REAL, DIMENSION(klon), INTENT(OUT) :: runoff !Land ice runoff
110
111
112	! Local variables
113	!****************************************************************************************
114	REAL, DIMENSION(klon) :: soilcap, soilflux
115	REAL, DIMENSION(klon) :: cal, beta, dif_grnd
116	REAL, DIMENSION(klon) :: zfra, alb_neig
117	REAL, DIMENSION(klon) :: radsol
118	REAL, DIMENSION(klon) :: u0, v0, u1_lay, v1_lay, ustar
119	INTEGER :: i,j,nt
120	REAL, DIMENSION(klon) :: fqfonte,ffonte
121	REAL, DIMENSION(klon) :: run_off_lic_frac
122	REAL, DIMENSION(klon) :: emis_new !Emissivity
123	REAL, DIMENSION(klon) :: swdown,lwdown
124	REAL, DIMENSION(klon) :: precip_snow_adv, snow_adv !Snow Drift precip./advection (not used in inlandsis)
125	REAL, DIMENSION(klon) :: erod !erosion of surface snow (flux, kg/m2/s like evap)
126	REAL, DIMENSION(klon) :: zsl_height, wind_velo !surface layer height, wind spd
127	REAL, DIMENSION(klon) :: dens_air, snow_cont_air !air density; snow content air
128	REAL, DIMENSION(klon) :: alb_soil !albedo of underlying ice
129	REAL, DIMENSION(klon) :: pexner !Exner potential
130	REAL :: pref
131	REAL, DIMENSION(klon,nsoilmx) :: tsoil0 !modif
132	REAL :: dtis ! subtimestep
133	LOGICAL :: debut_is, lafin_is ! debut and lafin for inlandsis
134
135	CHARACTER (len = 20) :: modname = 'surf_landice'
136	CHARACTER (len = 80) :: abort_message
137
138
139	REAL,DIMENSION(klon) :: alb1,alb2
140	REAL,DIMENSION(klon) :: precip_totsnow, evap_totsnow
141	REAL, DIMENSION (klon,6) :: alb6
142	REAL :: esalt
143	REAL :: lambdasalt,fluxsalt, csalt, nunu, aa, bb, cc
144	REAL :: tau_dens, maxerosion, fluxbs_2
145	REAL, DIMENSION(klon) :: ws1, rhod, rhos, ustart0, ustart, qsalt, hsalt
146
147	! End definition
148	!****************************************************************************************
149	!FC
150	!FC
151	REAL,SAVE :: alb_vis_sno_lic
152	!$OMP THREADPRIVATE(alb_vis_sno_lic)
153	REAL,SAVE :: alb_nir_sno_lic
154	!$OMP THREADPRIVATE(alb_nir_sno_lic)
155	LOGICAL, SAVE :: firstcall = .TRUE.
156	!$OMP THREADPRIVATE(firstcall)
157
158
159	!FC firtscall initializations
160	!******************************************************************************************
161	IF (firstcall) THEN
162	alb_vis_sno_lic=0.77
163	CALL getin_p('alb_vis_sno_lic',alb_vis_sno_lic)
164	PRINT*, 'alb_vis_sno_lic',alb_vis_sno_lic
165	alb_nir_sno_lic=0.77
166	CALL getin_p('alb_nir_sno_lic',alb_nir_sno_lic)
167	PRINT*, 'alb_nir_sno_lic',alb_nir_sno_lic
168
169	firstcall=.false.
170	ENDIF
171	!******************************************************************************************
172
173	! Initialize output variables
174	alb3(:) = 999999.
175	alb2(:) = 999999.
176	alb1(:) = 999999.
177	fluxbs(:)=0.
178	runoff(:) = 0.
179	!****************************************************************************************
180	! Calculate total absorbed radiance at surface
181	!
182	!****************************************************************************************
183	radsol(:) = 0.0
184	radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
185
186	!****************************************************************************************
187
188	!****************************************************************************************
189	! landice_opt = 0 : soil_model, calcul_flux, fonte_neige, ...
190	! landice_opt = 1 : prepare and call INterace Lmdz SISvat (INLANDSIS)
191	!****************************************************************************************
192
193
194	IF (landice_opt .EQ. 1) THEN
195
196	!****************************************************************************************
197	! CALL to INLANDSIS interface
198	!****************************************************************************************
199	#ifdef CPP_INLANDSIS
200
201	debut_is=debut
202	lafin_is=.false.
203	! Suppose zero surface speed
204	u0(:) = 0.0
205	v0(:) = 0.0
206
207
208	CALL calcul_flux_wind(knon, dtime, &
209	u0, v0, u1, v1, gustiness, cdragm, &
210	AcoefU, AcoefV, BcoefU, BcoefV, &
211	p1lay, temp_air, &
212	flux_u1, flux_v1)
213
214
215	! Set constants and compute some input for SISVAT
216	! = 1000 hPa
217	! and calculate incoming flux for SW and LW interval: swdown, lwdown
218	swdown(:) = 0.0
219	lwdown(:) = 0.0
220	snow_cont_air(:) = 0. ! the snow content in air is not a prognostic variable of the model
221	alb_soil(:) = 0.4 ! before albedo(:) but here it is the ice albedo that we have to set
222	ustar(:) = 0.
223	pref = 100000.
224	DO i = 1, knon
225	swdown(i) = swnet(i)/(1-albedo(i))
226	lwdown(i) = lwdownm(i)
227	wind_velo(i) = u1(i)2 + v1(i)2
228	wind_velo(i) = wind_velo(i)**0.5
229	pexner(i) = (p1lay(i)/pref)**(RD/RCPD)
230	dens_air(i) = p1lay(i)/RD/temp_air(i) ! dry air density
231	zsl_height(i) = pphi1(i)/RG
232	tsoil0(i,:) = tsoil(i,:)
233	ustar(i)= (cdragm(i)(wind_velo(i)2))*0.5
234	END DO
235
236
237
238	dtis=dtime
239
240	IF (lafin) THEN
241	lafin_is=.true.
242	END IF
243
244	CALL surf_inlandsis(knon, rlon, rlat, knindex, itime, dtis, debut_is, lafin_is,&
245	rmu0, swdown, lwdown, albedo, pexner, ps, p1lay, precip_rain, precip_snow, &
246	zsl_height, wind_velo, ustar, temp_air, dens_air, spechum, tsurf,&
247	rugoro, snow_cont_air, alb_soil, alt, slope, cloudf, &
248	radsol, qsol, tsoil0, snow, zfra, snowhgt, qsnow, to_ice, sissnow,agesno, &
249	AcoefH, AcoefQ, BcoefH, BcoefQ, cdragm, cdragh, &
250	run_off_lic, fqfonte, ffonte, evap, erod, fluxsens, fluxlat,dflux_s, dflux_l, &
251	tsurf_new, alb1, alb2, alb3, alb6, &
252	emis_new, z0m, z0h, qsurf)
253
254	debut_is=.false.
255
256
257	! Treatment of snow melting and calving
258
259	! for consistency with standard LMDZ, add calving to run_off_lic
260	run_off_lic(:)=run_off_lic(:) + to_ice(:)
261
262	DO i = 1, knon
263	ffonte_global(knindex(i),is_lic) = ffonte(i)
264	fqfonte_global(knindex(i),is_lic) = fqfonte(i)! net melting= melting - refreezing
265	fqcalving_global(knindex(i),is_lic) = to_ice(i) ! flux
266	runofflic_global(knindex(i)) = run_off_lic(i)
267	ENDDO
268	! Here, we assume that the calving term is equal to the to_ice term
269	! (no ice accumulation)
270
271
272	#else
273	abort_message='Pb de coherence: landice_opt = 1 mais CPP_INLANDSIS = .false.'
274	CALL abort_physic(modname,abort_message,1)
275	#endif
276
277
278	ELSE
279
280	!****************************************************************************************
281	! Soil calculations
282	!
283	!****************************************************************************************
284
285	! EV: use calbeta
286	CALL calbeta(dtime, is_lic, knon, snow, qsol, beta, cal, dif_grnd)
287
288
289	! use soil model and recalculate properly cal
290	IF (soil_model) THEN
291	CALL soil(dtime, is_lic, knon, snow, tsurf, qsol, &
292	& longitude(knindex(1:knon)), latitude(knindex(1:knon)), tsoil, soilcap, soilflux)
293	cal(1:knon) = RCPD / soilcap(1:knon)
294	radsol(1:knon) = radsol(1:knon) + soilflux(1:knon)
295	ELSE
296	cal = RCPD * calice
297	WHERE (snow > 0.0) cal = RCPD * calsno
298	ENDIF
299
300
301	!****************************************************************************************
302	! Calulate fluxes
303	!
304	!****************************************************************************************
305	! beta(:) = 1.0
306	! dif_grnd(:) = 0.0
307
308	! Suppose zero surface speed
309	u0(:)=0.0
310	v0(:)=0.0
311	u1_lay(:) = u1(:) - u0(:)
312	v1_lay(:) = v1(:) - v0(:)
313
314	CALL calcul_fluxs(knon, is_lic, dtime, &
315	tsurf, p1lay, cal, beta, cdragh, cdragh, ps, &
316	precip_rain, precip_snow, snow, qsurf, &
317	radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, &
318	1.,AcoefH, AcoefQ, BcoefH, BcoefQ, &
319	tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
320
321	CALL calcul_flux_wind(knon, dtime, &
322	u0, v0, u1, v1, gustiness, cdragm, &
323	AcoefU, AcoefV, BcoefU, BcoefV, &
324	p1lay, temp_air, &
325	flux_u1, flux_v1)
326
327
328	!****************************************************************************************
329	! Calculate albedo
330	!
331	!****************************************************************************************
332
333	!
334	!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
335	! alb1(1 : knon) = 0.6 !IM cf FH/GK
336	! alb1(1 : knon) = 0.82
337	! alb1(1 : knon) = 0.77 !211003 Ksta0.77
338	! alb1(1 : knon) = 0.8 !KstaTER0.8 & LMD_ARMIP5
339	!IM: KstaTER0.77 & LMD_ARMIP6
340
341	! Attantion: alb1 and alb2 are not the same!
342	alb1(1:knon) = alb_vis_sno_lic
343	alb2(1:knon) = alb_nir_sno_lic
344
345
346	!****************************************************************************************
347	! Rugosity
348	!
349	!****************************************************************************************
350	z0m = z0m_landice
351	z0h = z0h_landice
352	!z0m = SQRT(z0m2+rugoro2)
353
354
355	!****************************************************************************************
356	! Simple blowing snow param
357	!****************************************************************************************
358	! we proceed in 2 steps:
359	! first we erode - if possible -the accumulated snow during the time step
360	! then we update the density of the underlying layer and see if we can also erode
361	! this layer
362
363
364	if (ok_bs) then
365	fluxbs(:)=0.
366	do j=1,klon
367	ws1(j)=(u1(j)2+v1(j)2)**0.5
368	ustar(j)=(cdragm(j)(u1(j)2+v1(j)2))*0.5
369	rhod(j)=p1lay(j)/RD/temp_air(j)
370	ustart0(j) =(log(2.868)-log(1.625))/0.085*sqrt(cdragm(j))
371	enddo
372
373	! 1st step: erosion of fresh snow accumulated during the time step
374	do j=1, knon
375
376	rhos(j)=rhofresh_bs
377	! blowing snow flux formula used in MAR
378	ustart(j)=ustart0(j)exp(max(rhoice_bs/rhofresh_bs-rhoice_bs/rhos(j),0.))exp(max(0.,rhos(j)-rhohard_bs))
379	! we have multiplied by exp to prevent erosion when rhos>rhohard_bs
380	! computation of qbs at the top of the saltation layer
381	! default formulation from MAR model (Amory et al. 2021, Gallee et al. 2001)
382	esalt=1./(c_esalt_bs*max(1.e-6,ustar(j)))
383	hsalt(j)=0.08436(max(1.e-6,ustar(j))*1.27)
384	qsalt(j)=(max(ustar(j)2-ustart(j)2,0.))/(RGhsalt(j))esalt
385	! calculation of erosion (flux positive towards the surface here)
386	! consistent with implicit resolution of turbulent mixing equation
387	! Nemoto and Nishimura 2004 show that steady-state saltation is achieved within a time tau_eqsalt_bs of about 10s
388	! we thus prevent snowerosion (snow particle transfer from the saltation layer to the first model level)
389	! integrated over tau_eqsalt_bs to exceed the total mass of snow particle in the saltation layer
390	! (rhoqsalthsalt)
391	! during this first step we also lower bound the erosion to the amount of fresh snow accumulated during the time step
392	maxerosion=min(precip_snow(j),hsalt(j)qsalt(j)rhod(j)/tau_eqsalt_bs)
393
394	fluxbs(j)=rhod(j)ws1(j)cdragm(j)*(AcoefQBS(j)-qsalt(j)) &
395	/ (1.-rhod(j)ws1(j)cdragm(j)BcoefQBS(j)dtime)
396	!fluxbs(j)= rhodws1(j)cdragm(j)*(qbs1(j)-qsalt(j))
397	fluxbs(j)=max(-maxerosion,fluxbs(j))
398	enddo
399
400
401	! we now compute the snow age of the overlying layer (snow surface after erosion of the fresh snow accumulated during the time step)
402	! this is done through the routine albsno
403	CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)+fluxbs(:))
404
405	! 2nd step:
406	! computation of threshold friction velocity
407	! which depends on surface snow density
408	do j = 1, knon
409	! estimation of snow density
410	! snow density increases with snow age and
411	! increases even faster in case of sedimentation of blowing snow or rain
412	tau_dens=max(tau_densmin_bs, tau_dens0_bs*exp(-abs(precip_bs(j))/pbst_bs - &
413	abs(precip_rain(j))/prt_bs)*exp(-max(tsurf(j)-RTT,0.)))
414	rhos(j)=rhofresh_bs+(rhohard_bs-rhofresh_bs)(1.-exp(-agesno(j)86400.0/tau_dens))
415	! blowing snow flux formula used in MAR
416	ustart(j)=ustart0(j)exp(max(rhoice_bs/rhofresh_bs-rhoice_bs/rhos(j),0.))exp(max(0.,rhos(j)-rhohard_bs))
417	! we have multiplied by exp to prevent erosion when rhos>rhohard_bs
418	! computation of qbs at the top of the saltation layer
419	! default formulation from MAR model (Amory et al. 2021, Gallee et al. 2001)
420	esalt=c_esalt_bs*ustar(j)
421	hsalt(j)=0.08436(max(1.e-6,ustar(j))*1.27)
422	qsalt(j)=(max(ustar(j)2-ustart(j)2,0.))/(RGhsalt(j))esalt
423	! calculation of erosion (flux positive towards the surface here)
424	! consistent with implicit resolution of turbulent mixing equation
425	! Nemoto and Nishimura 2004 show that steady-state saltation is achieved within a time tau_eqsalt_bs of about 10s
426	! we thus prevent snowerosion (snow particle transfer from the saltation layer to the first model level)
427	! integrated over tau_eqsalt_bs to exceed the total mass of snow particle in the saltation layer
428	! (rhoqsalthsalt)
429	maxerosion=hsalt(j)qsalt(j)rhod(j)/tau_eqsalt_bs
430	fluxbs_2=rhod(j)ws1(j)cdragm(j)*(AcoefQBS(j)-qsalt(j)) &
431	/ (1.-rhod(j)ws1(j)cdragm(j)BcoefQBS(j)dtime)
432	!fluxbs_2= rhodws1(j)cdragm(j)*(qbs1(j)-qsalt(j))
433	fluxbs_2=max(-maxerosion,fluxbs_2)
434	fluxbs(j)=fluxbs(j)+fluxbs_2
435	enddo
436
437	! for outputs
438	do j=1, knon
439	i = knindex(j)
440	zxustartlic(i) = ustart(j)
441	zxrhoslic(i) = rhos(j)
442	zxqsaltlic(i)=qsalt(j)
443	enddo
444
445
446	else
447	! those lines are useful to calculate the snow age
448	CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:))
449
450	endif ! if ok_bs
451
452
453
454	!****************************************************************************************
455	! Calculate snow amount
456	!
457	!****************************************************************************************
458	IF (ok_bs) THEN
459	precip_totsnow(:)=precip_snow(:)+precip_bs(:)
460	evap_totsnow(:)=evap(:)-fluxbs(:) ! flux bs is positive towards the surface (snow erosion)
461	ELSE
462	precip_totsnow(:)=precip_snow(:)
463	evap_totsnow(:)=evap(:)
464	ENDIF
465
466
467	CALL fonte_neige(knon, is_lic, knindex, dtime, &
468	tsurf, precip_rain, precip_totsnow, &
469	snow, qsol, tsurf_new, evap_totsnow)
470
471
472	WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
473	zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
474
475
476	END IF ! landice_opt
477
478
479	!****************************************************************************************
480	! Send run-off on land-ice to coupler if coupled ocean.
481	! run_off_lic has been calculated in fonte_neige or surf_inlandsis
482	! If landice_opt>=2, corresponding call is done from surf_land_orchidee
483	!****************************************************************************************
484	IF (type_ocean=='couple' .AND. landice_opt .LT. 2) THEN
485	! Compress fraction where run_off_lic is active (here all pctsrf(is_lic))
486	run_off_lic_frac(:)=0.0
487	DO j = 1, knon
488	i = knindex(j)
489	run_off_lic_frac(j) = pctsrf(i,is_lic)
490	ENDDO
491
492	CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic, run_off_lic_frac)
493	ENDIF
494
495	! transfer runoff rate [kg/m2/s](!) to physiq for output
496	runoff(1:knon)=run_off_lic(1:knon)/dtime
497
498	snow_o=0.
499	zfra_o = 0.
500	DO j = 1, knon
501	i = knindex(j)
502	snow_o(i) = snow(j)
503	zfra_o(i) = zfra(j)
504	ENDDO
505
506
507	!albedo SB >>>
508	select case(NSW)
509	case(2)
510	alb_dir(1:knon,1)=alb1(1:knon)
511	alb_dir(1:knon,2)=alb2(1:knon)
512	case(4)
513	alb_dir(1:knon,1)=alb1(1:knon)
514	alb_dir(1:knon,2)=alb2(1:knon)
515	alb_dir(1:knon,3)=alb2(1:knon)
516	alb_dir(1:knon,4)=alb2(1:knon)
517	case(6)
518	alb_dir(1:knon,1)=alb1(1:knon)
519	alb_dir(1:knon,2)=alb1(1:knon)
520	alb_dir(1:knon,3)=alb1(1:knon)
521	alb_dir(1:knon,4)=alb2(1:knon)
522	alb_dir(1:knon,5)=alb2(1:knon)
523	alb_dir(1:knon,6)=alb2(1:knon)
524
525	IF ((landice_opt .EQ. 1) .AND. (iflag_albcalc .EQ. 2)) THEN
526	alb_dir(1:knon,1)=alb6(1:knon,1)
527	alb_dir(1:knon,2)=alb6(1:knon,2)
528	alb_dir(1:knon,3)=alb6(1:knon,3)
529	alb_dir(1:knon,4)=alb6(1:knon,4)
530	alb_dir(1:knon,5)=alb6(1:knon,5)
531	alb_dir(1:knon,6)=alb6(1:knon,6)
532	ENDIF
533
534	end select
535	alb_dif=alb_dir
536	!albedo SB <<<
537
538
539	END SUBROUTINE surf_landice
540	!
541	!****************************************************************************************
542	!
543	END MODULE surf_landice_mod
544
545
546

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