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surf_landice_mod.F90 @ 4283

Last change on this file since 4283 was 4283, checked in by jghattas, 19 months ago

Added landice_opt=2 : Treat continental land ice fractions in ORCHIDEE => pctsrf(:,is_lic) = 0.0 in LMDZ.

For this option, some more variables are needed from ORCHIDEE. Therfor change in the interface LMDZ-ORCHIDEE in surf_land_orchidee_mod is done. Previous interface is moved to surf_land_orchidee_nolic_mod.f90. To compile with previous interface, cpp key ORCHIDEE_NOLIC is added. Previous interface is compiled with argument orchidee2.1 in makelmdz and makelmdz_fcm.

At the same time, when the interface was changed, the variable yrmu0(coszang) was added in the call to intersurf_initialize_gathered. This is needed in ORCHIDEE to better initialize the model.

Modifications done by Etienne Vignon and Josefine Ghattas

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: 16.7 KB

Line
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, temp_air, spechum, &
15	AcoefH, AcoefQ, BcoefH, BcoefQ, &
16	AcoefU, AcoefV, BcoefU, BcoefV, &
17	ps, u1, v1, gustiness, rugoro, pctsrf, &
18	snow, qsurf, qsol, agesno, &
19	tsoil, z0m, z0h, SFRWL, alb_dir, alb_dif, evap, fluxsens, fluxlat, &
20	tsurf_new, dflux_s, dflux_l, &
21	alt, slope, cloudf, &
22	snowhgt, qsnow, to_ice, sissnow, &
23	alb3, runoff, &
24	flux_u1, flux_v1)
25
26	USE dimphy
27	USE geometry_mod, ONLY : longitude,latitude
28	USE surface_data, ONLY : type_ocean, calice, calsno, landice_opt, iflag_albcalc
29	USE fonte_neige_mod, ONLY : fonte_neige,run_off_lic,fqcalving_global,ffonte_global,fqfonte_global,runofflic_global
30	USE cpl_mod, ONLY : cpl_send_landice_fields
31	USE calcul_fluxs_mod
32	USE phys_output_var_mod
33	!FC
34	USE ioipsl_getin_p_mod, ONLY : getin_p
35
36
37	#ifdef CPP_INLANDSIS
38	USE surf_inlandsis_mod, ONLY : surf_inlandsis
39	#endif
40
41	USE indice_sol_mod
42
43	! INCLUDE "indicesol.h"
44	INCLUDE "dimsoil.h"
45	INCLUDE "YOMCST.h"
46	INCLUDE "clesphys.h"
47
48	! Input variables
49	!****************************************************************************************
50	INTEGER, INTENT(IN) :: itime, knon
51	INTEGER, DIMENSION(klon), INTENT(in) :: knindex
52	REAL, INTENT(in) :: dtime
53	REAL, DIMENSION(klon), INTENT(IN) :: swnet ! net shortwave radiance
54	REAL, DIMENSION(klon), INTENT(IN) :: lwnet ! net longwave radiance
55	REAL, DIMENSION(klon), INTENT(IN) :: tsurf
56	REAL, DIMENSION(klon), INTENT(IN) :: p1lay
57	REAL, DIMENSION(klon), INTENT(IN) :: cdragh, cdragm
58	REAL, DIMENSION(klon), INTENT(IN) :: precip_rain, precip_snow
59	REAL, DIMENSION(klon), INTENT(IN) :: temp_air, spechum
60	REAL, DIMENSION(klon), INTENT(IN) :: AcoefH, AcoefQ
61	REAL, DIMENSION(klon), INTENT(IN) :: BcoefH, BcoefQ
62	REAL, DIMENSION(klon), INTENT(IN) :: AcoefU, AcoefV, BcoefU, BcoefV
63	REAL, DIMENSION(klon), INTENT(IN) :: ps
64	REAL, DIMENSION(klon), INTENT(IN) :: u1, v1, gustiness
65	REAL, DIMENSION(klon), INTENT(IN) :: rugoro
66	REAL, DIMENSION(klon,nbsrf), INTENT(IN) :: pctsrf
67
68	LOGICAL, INTENT(IN) :: debut !true if first step
69	LOGICAL, INTENT(IN) :: lafin !true if last step
70	REAL, DIMENSION(klon), INTENT(IN) :: rlon, rlat
71	REAL, DIMENSION(klon), INTENT(IN) :: rmu0
72	REAL, DIMENSION(klon), INTENT(IN) :: lwdownm !ylwdown
73	REAL, DIMENSION(klon), INTENT(IN) :: albedo !mean albedo
74	REAL, DIMENSION(klon), INTENT(IN) :: pphi1
75	REAL, DIMENSION(klon), INTENT(IN) :: alt !mean altitude of the grid box
76	REAL, DIMENSION(klon), INTENT(IN) :: slope !mean slope in grid box
77	REAL, DIMENSION(klon), INTENT(IN) :: cloudf !total cloud fraction
78
79	! In/Output variables
80	!****************************************************************************************
81	REAL, DIMENSION(klon), INTENT(INOUT) :: snow, qsol
82	REAL, DIMENSION(klon), INTENT(INOUT) :: agesno
83	REAL, DIMENSION(klon, nsoilmx), INTENT(INOUT) :: tsoil
84
85	! Output variables
86	!****************************************************************************************
87	REAL, DIMENSION(klon), INTENT(OUT) :: qsurf
88	REAL, DIMENSION(klon), INTENT(OUT) :: z0m, z0h
89	!albedo SB >>>
90	! REAL, DIMENSION(klon), INTENT(OUT) :: alb1 ! new albedo in visible SW interval
91	! REAL, DIMENSION(klon), INTENT(OUT) :: alb2 ! new albedo in near IR interval
92	REAL, DIMENSION(6), INTENT(IN) :: SFRWL
93	REAL, DIMENSION(klon,nsw), INTENT(OUT) :: alb_dir,alb_dif
94	!albedo SB <<<
95	REAL, DIMENSION(klon), INTENT(OUT) :: evap, fluxsens, fluxlat
96	REAL, DIMENSION(klon), INTENT(OUT) :: tsurf_new
97	REAL, DIMENSION(klon), INTENT(OUT) :: dflux_s, dflux_l
98	REAL, DIMENSION(klon), INTENT(OUT) :: flux_u1, flux_v1
99
100	REAL, DIMENSION(klon), INTENT(OUT) :: alb3
101	REAL, DIMENSION(klon), INTENT(OUT) :: qsnow !column water in snow [kg/m2]
102	REAL, DIMENSION(klon), INTENT(OUT) :: snowhgt !Snow height (m)
103	REAL, DIMENSION(klon), INTENT(OUT) :: to_ice
104	REAL, DIMENSION(klon), INTENT(OUT) :: sissnow
105	REAL, DIMENSION(klon), INTENT(OUT) :: runoff !Land ice runoff
106
107
108	! Local variables
109	!****************************************************************************************
110	REAL, DIMENSION(klon) :: soilcap, soilflux
111	REAL, DIMENSION(klon) :: cal, beta, dif_grnd
112	REAL, DIMENSION(klon) :: zfra, alb_neig
113	REAL, DIMENSION(klon) :: radsol
114	REAL, DIMENSION(klon) :: u0, v0, u1_lay, v1_lay, ustar
115	INTEGER :: i,j,nt
116	REAL, DIMENSION(klon) :: fqfonte,ffonte
117	REAL, DIMENSION(klon) :: run_off_lic_frac
118	REAL, DIMENSION(klon) :: emis_new !Emissivity
119	REAL, DIMENSION(klon) :: swdown,lwdown
120	REAL, DIMENSION(klon) :: precip_snow_adv, snow_adv !Snow Drift precip./advection (not used in inlandsis)
121	REAL, DIMENSION(klon) :: erod !erosion of surface snow (flux, kg/m2/s like evap)
122	REAL, DIMENSION(klon) :: zsl_height, wind_velo !surface layer height, wind spd
123	REAL, DIMENSION(klon) :: dens_air, snow_cont_air !air density; snow content air
124	REAL, DIMENSION(klon) :: alb_soil !albedo of underlying ice
125	REAL, DIMENSION(klon) :: pexner !Exner potential
126	REAL :: pref
127	REAL, DIMENSION(klon,nsoilmx) :: tsoil0 !modif
128	REAL :: dtis ! subtimestep
129	LOGICAL :: debut_is, lafin_is ! debut and lafin for inlandsis
130
131	CHARACTER (len = 20) :: modname = 'surf_landice'
132	CHARACTER (len = 80) :: abort_message
133
134
135	REAL,DIMENSION(klon) :: alb1,alb2
136	REAL, DIMENSION (klon,6) :: alb6
137	! End definition
138	!****************************************************************************************
139	!FC
140	!FC
141	REAL,SAVE :: alb_vis_sno_lic
142	!$OMP THREADPRIVATE(alb_vis_sno_lic)
143	REAL,SAVE :: alb_nir_sno_lic
144	!$OMP THREADPRIVATE(alb_nir_sno_lic)
145	LOGICAL, SAVE :: firstcall = .TRUE.
146	!$OMP THREADPRIVATE(firstcall)
147
148
149	!FC firtscall initializations
150	!******************************************************************************************
151	IF (firstcall) THEN
152	alb_vis_sno_lic=0.77
153	CALL getin_p('alb_vis_sno_lic',alb_vis_sno_lic)
154	PRINT*, 'alb_vis_sno_lic',alb_vis_sno_lic
155	alb_nir_sno_lic=0.77
156	CALL getin_p('alb_nir_sno_lic',alb_nir_sno_lic)
157	PRINT*, 'alb_nir_sno_lic',alb_nir_sno_lic
158
159	firstcall=.false.
160	ENDIF
161	!******************************************************************************************
162
163	! Initialize output variables
164	alb3(:) = 999999.
165	alb2(:) = 999999.
166	alb1(:) = 999999.
167
168	runoff(:) = 0.
169	!****************************************************************************************
170	! Calculate total absorbed radiance at surface
171	!
172	!****************************************************************************************
173	radsol(:) = 0.0
174	radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
175
176	!****************************************************************************************
177	! landice_opt = 0 : soil_model, calcul_flux, fonte_neige, ...
178	! landice_opt = 1 : prepare and call INterace Lmdz SISvat (INLANDSIS)
179	!****************************************************************************************
180
181
182	IF (landice_opt .EQ. 1) THEN
183
184	!****************************************************************************************
185	! CALL to INLANDSIS interface
186	!****************************************************************************************
187	#ifdef CPP_INLANDSIS
188
189	debut_is=debut
190	lafin_is=.false.
191	! Suppose zero surface speed
192	u0(:) = 0.0
193	v0(:) = 0.0
194
195
196	CALL calcul_flux_wind(knon, dtime, &
197	u0, v0, u1, v1, gustiness, cdragm, &
198	AcoefU, AcoefV, BcoefU, BcoefV, &
199	p1lay, temp_air, &
200	flux_u1, flux_v1)
201
202
203	! Set constants and compute some input for SISVAT
204	! = 1000 hPa
205	! and calculate incoming flux for SW and LW interval: swdown, lwdown
206	swdown(:) = 0.0
207	lwdown(:) = 0.0
208	snow_cont_air(:) = 0. ! the snow content in air is not a prognostic variable of the model
209	alb_soil(:) = 0.4 ! before albedo(:) but here it is the ice albedo that we have to set
210	ustar(:) = 0.
211	pref = 100000.
212	DO i = 1, knon
213	swdown(i) = swnet(i)/(1-albedo(i))
214	lwdown(i) = lwdownm(i)
215	wind_velo(i) = u1(i)2 + v1(i)2
216	wind_velo(i) = wind_velo(i)**0.5
217	pexner(i) = (p1lay(i)/pref)**(RD/RCPD)
218	dens_air(i) = p1lay(i)/RD/temp_air(i) ! dry air density
219	zsl_height(i) = pphi1(i)/RG
220	tsoil0(i,:) = tsoil(i,:)
221	ustar(i)= (cdragm(i)(wind_velo(i)2))*0.5
222	END DO
223
224
225
226	dtis=dtime
227
228	IF (lafin) THEN
229	lafin_is=.true.
230	END IF
231
232	CALL surf_inlandsis(knon, rlon, rlat, knindex, itime, dtis, debut_is, lafin_is,&
233	rmu0, swdown, lwdown, albedo, pexner, ps, p1lay, precip_rain, precip_snow, &
234	zsl_height, wind_velo, ustar, temp_air, dens_air, spechum, tsurf,&
235	rugoro, snow_cont_air, alb_soil, alt, slope, cloudf, &
236	radsol, qsol, tsoil0, snow, zfra, snowhgt, qsnow, to_ice, sissnow,agesno, &
237	AcoefH, AcoefQ, BcoefH, BcoefQ, cdragm, cdragh, &
238	run_off_lic, fqfonte, ffonte, evap, erod, fluxsens, fluxlat,dflux_s, dflux_l, &
239	tsurf_new, alb1, alb2, alb3, alb6, &
240	emis_new, z0m, z0h, qsurf)
241
242	debut_is=.false.
243
244
245	! Treatment of snow melting and calving
246
247	! for consistency with standard LMDZ, add calving to run_off_lic
248	run_off_lic(:)=run_off_lic(:) + to_ice(:)
249
250	DO i = 1, knon
251	ffonte_global(knindex(i),is_lic) = ffonte(i)
252	fqfonte_global(knindex(i),is_lic) = fqfonte(i)! net melting= melting - refreezing
253	fqcalving_global(knindex(i),is_lic) = to_ice(i) ! flux
254	runofflic_global(knindex(i)) = run_off_lic(i)
255	ENDDO
256	! Here, we assume that the calving term is equal to the to_ice term
257	! (no ice accumulation)
258
259
260	#else
261	abort_message='Pb de coherence: landice_opt = 1 mais CPP_INLANDSIS = .false.'
262	CALL abort_physic(modname,abort_message,1)
263	#endif
264
265
266
267	ELSE
268
269	!****************************************************************************************
270	! Soil calculations
271	!
272	!****************************************************************************************
273
274	! EV: use calbeta
275	CALL calbeta(dtime, is_lic, knon, snow, qsol, beta, cal, dif_grnd)
276
277
278	! use soil model and recalculate properly cal
279	IF (soil_model) THEN
280	CALL soil(dtime, is_lic, knon, snow, tsurf, qsol, &
281	& longitude(knindex(1:knon)), latitude(knindex(1:knon)), tsoil, soilcap, soilflux)
282	cal(1:knon) = RCPD / soilcap(1:knon)
283	radsol(1:knon) = radsol(1:knon) + soilflux(1:knon)
284	ELSE
285	cal = RCPD * calice
286	WHERE (snow > 0.0) cal = RCPD * calsno
287	ENDIF
288
289
290	!****************************************************************************************
291	! Calulate fluxes
292	!
293	!****************************************************************************************
294	! beta(:) = 1.0
295	! dif_grnd(:) = 0.0
296
297	! Suppose zero surface speed
298	u0(:)=0.0
299	v0(:)=0.0
300	u1_lay(:) = u1(:) - u0(:)
301	v1_lay(:) = v1(:) - v0(:)
302
303	CALL calcul_fluxs(knon, is_lic, dtime, &
304	tsurf, p1lay, cal, beta, cdragh, cdragh, ps, &
305	precip_rain, precip_snow, snow, qsurf, &
306	radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, &
307	1.,AcoefH, AcoefQ, BcoefH, BcoefQ, &
308	tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
309
310	CALL calcul_flux_wind(knon, dtime, &
311	u0, v0, u1, v1, gustiness, cdragm, &
312	AcoefU, AcoefV, BcoefU, BcoefV, &
313	p1lay, temp_air, &
314	flux_u1, flux_v1)
315
316	!****************************************************************************************
317	! Calculate snow height, age, run-off,..
318	!
319	!****************************************************************************************
320	CALL fonte_neige(knon, is_lic, knindex, dtime, &
321	tsurf, precip_rain, precip_snow, &
322	snow, qsol, tsurf_new, evap)
323
324
325	!****************************************************************************************
326	! Calculate albedo
327	!
328	!****************************************************************************************
329	CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:))
330
331	WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
332	zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
333	alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + &
334	0.6 * (1.0-zfra(1:knon))
335	!
336	!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
337	! alb1(1 : knon) = 0.6 !IM cf FH/GK
338	! alb1(1 : knon) = 0.82
339	! alb1(1 : knon) = 0.77 !211003 Ksta0.77
340	! alb1(1 : knon) = 0.8 !KstaTER0.8 & LMD_ARMIP5
341	!IM: KstaTER0.77 & LMD_ARMIP6
342
343	! Attantion: alb1 and alb2 are not the same!
344	alb1(1:knon) = alb_vis_sno_lic
345	alb2(1:knon) = alb_nir_sno_lic
346
347
348	!****************************************************************************************
349	! Rugosity
350	!
351	!****************************************************************************************
352	z0m = z0m_landice
353	z0h = z0h_landice
354	!z0m = SQRT(z0m2+rugoro2)
355
356
357
358	END IF ! landice_opt
359
360
361	!****************************************************************************************
362	! Send run-off on land-ice to coupler if coupled ocean.
363	! run_off_lic has been calculated in fonte_neige or surf_inlandsis
364	! If landice_opt>=2, corresponding call is done from surf_land_orchidee
365	!****************************************************************************************
366	IF (type_ocean=='couple' .AND. landice_opt .LT. 2) THEN
367	! Compress fraction where run_off_lic is active (here all pctsrf(is_lic))
368	run_off_lic_frac(:)=0.0
369	DO j = 1, knon
370	i = knindex(j)
371	run_off_lic_frac(j) = pctsrf(i,is_lic)
372	ENDDO
373
374	CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic, run_off_lic_frac)
375	ENDIF
376
377	! transfer runoff rate [kg/m2/s](!) to physiq for output
378	runoff(1:knon)=run_off_lic(1:knon)/dtime
379
380
381	!****************************************************************************************
382	! Etienne: comment these lines because of duplication just below
383	! snow_o=0.
384	! zfra_o = 0.
385	! DO j = 1, knon
386	! i = knindex(j)
387	! snow_o(i) = snow(j)
388	! zfra_o(i) = zfra(j)
389	! ENDDO
390	!
391	!****************************************************************************************
392	snow_o=0.
393	zfra_o = 0.
394	DO j = 1, knon
395	i = knindex(j)
396	snow_o(i) = snow(j)
397	zfra_o(i) = zfra(j)
398	ENDDO
399
400
401	!albedo SB >>>
402	select case(NSW)
403	case(2)
404	alb_dir(1:knon,1)=alb1(1:knon)
405	alb_dir(1:knon,2)=alb2(1:knon)
406	case(4)
407	alb_dir(1:knon,1)=alb1(1:knon)
408	alb_dir(1:knon,2)=alb2(1:knon)
409	alb_dir(1:knon,3)=alb2(1:knon)
410	alb_dir(1:knon,4)=alb2(1:knon)
411	case(6)
412	alb_dir(1:knon,1)=alb1(1:knon)
413	alb_dir(1:knon,2)=alb1(1:knon)
414	alb_dir(1:knon,3)=alb1(1:knon)
415	alb_dir(1:knon,4)=alb2(1:knon)
416	alb_dir(1:knon,5)=alb2(1:knon)
417	alb_dir(1:knon,6)=alb2(1:knon)
418
419	IF ((landice_opt .EQ. 1) .AND. (iflag_albcalc .EQ. 2)) THEN
420	alb_dir(1:knon,1)=alb6(1:knon,1)
421	alb_dir(1:knon,2)=alb6(1:knon,2)
422	alb_dir(1:knon,3)=alb6(1:knon,3)
423	alb_dir(1:knon,4)=alb6(1:knon,4)
424	alb_dir(1:knon,5)=alb6(1:knon,5)
425	alb_dir(1:knon,6)=alb6(1:knon,6)
426	ENDIF
427
428	end select
429	alb_dif=alb_dir
430	!albedo SB <<<
431
432
433
434
435	END SUBROUTINE surf_landice
436	!
437	!****************************************************************************************
438	!
439	END MODULE surf_landice_mod
440
441
442

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