source: LMDZ6/branches/LMDZ-tracers/libf/phylmd/surf_landice_mod.F90 @ 4287

Last change on this file since 4287 was 3851, checked in by dcugnet, 4 years ago

Update the branch to the current trunk.
  • 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: 18.0 KB
Line 
1!
2MODULE surf_landice_mod
3 
4  IMPLICIT NONE
5
6CONTAINS
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       slope, cloudf, &
22       snowhgt, qsnow, to_ice, sissnow, &
23       alb3, runoff, &
24       flux_u1, flux_v1)
25
26    USE dimphy
27    USE surface_data,     ONLY : type_ocean, calice, calsno, landice_opt, n_dtis
28    USE fonte_neige_mod,  ONLY : fonte_neige, run_off_lic
29    USE cpl_mod,          ONLY : cpl_send_landice_fields
30    USE calcul_fluxs_mod
31    USE phys_output_var_mod
32!FC
33    USE ioipsl_getin_p_mod, ONLY : getin_p
34
35#ifdef CPP_SISVAT
36    USE surf_sisvat_mod,  ONLY : surf_sisvat
37#endif
38
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
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)             :: ps
66    REAL, DIMENSION(klon), INTENT(IN)             :: u1, v1, gustiness
67    REAL, DIMENSION(klon), INTENT(IN)             :: rugoro
68    REAL, DIMENSION(klon,nbsrf), INTENT(IN)       :: pctsrf
69
70    LOGICAL,  INTENT(IN)                          :: debut   !true if first step
71    LOGICAL,  INTENT(IN)                          :: lafin   !true if last step
72    REAL, DIMENSION(klon), INTENT(IN)             :: rlon, rlat
73    REAL, DIMENSION(klon), INTENT(IN)             :: rmu0
74    REAL, DIMENSION(klon), INTENT(IN)             :: lwdownm !ylwdown
75    REAL, DIMENSION(klon), INTENT(IN)             :: albedo  !mean albedo
76    REAL, DIMENSION(klon), INTENT(IN)             :: pphi1   
77    REAL, DIMENSION(klon), INTENT(IN)             :: slope   !mean slope in grid box 
78    REAL, DIMENSION(klon), INTENT(IN)             :: cloudf  !total cloud fraction
79
80! In/Output variables
81!****************************************************************************************
82    REAL, DIMENSION(klon), INTENT(INOUT)          :: snow, qsol
83    REAL, DIMENSION(klon), INTENT(INOUT)          :: agesno
84    REAL, DIMENSION(klon, nsoilmx), INTENT(INOUT) :: tsoil
85
86! Output variables
87!****************************************************************************************
88    REAL, DIMENSION(klon), INTENT(OUT)            :: qsurf
89    REAL, DIMENSION(klon), INTENT(OUT)            :: z0m, z0h
90!albedo SB >>>
91!    REAL, DIMENSION(klon), INTENT(OUT)            :: alb1  ! new albedo in visible SW interval
92!    REAL, DIMENSION(klon), INTENT(OUT)            :: alb2  ! new albedo in near IR interval
93    REAL, DIMENSION(6), INTENT(IN)                :: SFRWL
94    REAL, DIMENSION(klon,nsw), INTENT(OUT)        :: alb_dir,alb_dif
95!albedo SB <<<
96    REAL, DIMENSION(klon), INTENT(OUT)            :: evap, fluxsens, fluxlat
97    REAL, DIMENSION(klon), INTENT(OUT)            :: tsurf_new
98    REAL, DIMENSION(klon), INTENT(OUT)            :: dflux_s, dflux_l     
99    REAL, DIMENSION(klon), INTENT(OUT)            :: flux_u1, flux_v1
100
101    REAL, DIMENSION(klon), INTENT(OUT)           :: alb3
102    REAL, DIMENSION(klon), INTENT(OUT)           :: qsnow   !column water in snow [kg/m2]
103    REAL, DIMENSION(klon), INTENT(OUT)           :: snowhgt !Snow height (m)
104    REAL, DIMENSION(klon), INTENT(OUT)           :: to_ice
105    REAL, DIMENSION(klon), INTENT(OUT)           :: sissnow
106    REAL, DIMENSION(klon), INTENT(OUT)           :: runoff  !Land ice runoff
107 
108
109! Local variables
110!****************************************************************************************
111    REAL, DIMENSION(klon)    :: soilcap, soilflux
112    REAL, DIMENSION(klon)    :: cal, beta, dif_grnd
113    REAL, DIMENSION(klon)    :: zfra, alb_neig
114    REAL, DIMENSION(klon)    :: radsol
115    REAL, DIMENSION(klon)    :: u0, v0, u1_lay, v1_lay, ustar
116    INTEGER                  :: i,j,nt
117
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
121    REAL, DIMENSION(klon)    :: zsl_height, wind_velo      !surface layer height, wind spd
122    REAL, DIMENSION(klon)    :: dens_air,  snow_cont_air  !air density; snow content air
123    REAL, DIMENSION(klon)    :: alb_soil                  !albedo of underlying ice
124    REAL, DIMENSION(klon)    :: pexner                    !Exner potential
125    REAL                     :: pref
126    REAL, DIMENSION(klon,nsoilmx) :: tsoil0               !modif
127    REAL                          :: dtis                ! subtimestep
128    LOGICAL                       :: debut_is, lafin_is  ! debut and lafin for inlandsis
129
130    CHARACTER (len = 20)                      :: modname = 'surf_landice'
131    CHARACTER (len = 80)                      :: abort_message
132
133
134!albedo SB >>>
135    real,dimension(klon) :: alb1,alb2
136!albedo SB <<<
137
138! End definition
139!****************************************************************************************
140!FC
141!FC
142   REAL,SAVE :: alb_vis_sno_lic
143  !$OMP THREADPRIVATE(alb_vis_sno_lic)
144   REAL,SAVE :: alb_nir_sno_lic
145  !$OMP THREADPRIVATE(alb_nir_sno_lic)
146  LOGICAL, SAVE :: firstcall = .TRUE.
147  !$OMP THREADPRIVATE(firstcall)
148
149
150!FC firtscall initializations
151!******************************************************************************************
152  IF (firstcall) THEN
153  alb_vis_sno_lic=0.77
154  CALL getin_p('alb_vis_sno_lic',alb_vis_sno_lic)
155           PRINT*, 'alb_vis_sno_lic',alb_vis_sno_lic
156  alb_nir_sno_lic=0.77
157  CALL getin_p('alb_nir_sno_lic',alb_nir_sno_lic)
158           PRINT*, 'alb_nir_sno_lic',alb_nir_sno_lic
159 
160!  z0m=1.e-3
161!  z0h = z0m
162  firstcall=.false.
163  ENDIF
164!******************************************************************************************
165
166! Initialize output variables
167    alb3(:) = 999999.
168    alb2(:) = 999999.
169    alb1(:) = 999999.
170   
171    runoff(:) = 0.
172!****************************************************************************************
173! Calculate total absorbed radiance at surface
174!
175!****************************************************************************************
176    radsol(:) = 0.0
177    radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
178
179!****************************************************************************************
180!  landice_opt = 0 : soil_model, calcul_flux, fonte_neige, ... 
181!  landice_opt = 1  : prepare and call SISVAT snow model
182!  landice_opt = 2  : prepare and call INLANDSIS snow model
183!****************************************************************************************
184
185
186    IF (landice_opt .EQ. 1) THEN
187   
188!****************************************************************************************
189! CALL to SISVAT interface
190!****************************************************************************************
191
192#ifdef CPP_SISVAT
193       ! Prepare for calling SISVAT
194       
195       ! Calculate incoming flux for SW and LW interval: swdown, lwdown
196       swdown(:)        = 0.0
197       lwdown(:)        = 0.0
198       DO i = 1, knon
199          swdown(i)        = swnet(i)/(1-albedo(i))
200          lwdown(i)        = lwdownm(i)
201       END DO
202       
203       ! Set constants and compute some input for SISVAT
204       snow_adv(:)      = 0.                          ! no snow blown in for now
205       snow_cont_air(:) = 0.       
206       alb_soil(:)      = albedo(:)
207       pref             = 100000.                     ! = 1000 hPa
208       DO i = 1, knon
209          wind_velo(i)     = u1(i)**2 + v1(i)**2
210          wind_velo(i)     = wind_velo(i)**0.5
211          pexner(i)        = (p1lay(i)/pref)**(RD/RCPD)
212          dens_air(i)      = p1lay(i)/RD/temp_air(i)  ! dry air density
213          zsl_height(i)     = pphi1(i)/RG             
214       END DO
215
216
217       ! config: compute everything with SV but temperatures afterwards with soil/calculfluxs
218       DO i = 1, knon
219          tsoil0(i,:)=tsoil(i,:)
220       END DO
221           ! Martin
222           PRINT*, 'on appelle surf_sisvat'
223           ! Martin
224       CALL surf_sisvat(knon, rlon, rlat, knindex, itime, dtime, debut, lafin, &
225            rmu0, swdown, lwdown, pexner, ps, p1lay, &
226            precip_rain, precip_snow, precip_snow_adv, snow_adv, &
227            zsl_height, wind_velo, temp_air, dens_air, spechum, tsurf, &
228            rugoro, snow_cont_air, alb_soil, slope, cloudf, &
229            radsol, qsol, tsoil0, snow, snowhgt, qsnow, to_ice,sissnow, agesno, &
230            AcoefH, AcoefQ, BcoefH, BcoefQ, cdragh, &
231            run_off_lic, evap, fluxsens, fluxlat, dflux_s, dflux_l, &       
232            tsurf_new, alb1, alb2, alb3, &
233            emis_new, z0m, qsurf)
234       z0h(1:knon)=z0m(1:knon) ! en attendant mieux
235       
236       ! Suppose zero surface speed
237       u0(:)            = 0.0
238       v0(:)            = 0.0
239       ! The calculation of heat/water fluxes, otherwise done by "CALL calcul_fluxs" is
240       ! integrated in SISVAT, using the same method. It can be found in "sisvat.f", in the
241       ! subroutine "SISVAT_TS2".
242       ! u0, v0=0., dif_grnd=0. and beta=1 are assumed there!
243       
244       CALL calcul_flux_wind(knon, dtime, &
245            u0, v0, u1, v1, gustiness, cdragm, &
246            AcoefU, AcoefV, BcoefU, BcoefV, &
247            p1lay, temp_air, &
248            flux_u1, flux_v1)
249#else
250       abort_message='Pb de coherence: landice_opt = 1 mais CPP_SISVAT = .false.'
251       CALL abort_physic(modname,abort_message,1)
252#endif
253
254!****************************************************************************************
255! CALL to INLANDSIS interface
256!****************************************************************************************
257
258    ELSE IF (landice_opt .EQ. 2) THEN
259#ifdef CPP_INLANDSIS
260
261        debut_is=debut
262        lafin_is=.false.
263        ! Suppose zero surface speed
264        u0(:)            = 0.0
265        v0(:)            = 0.0
266
267
268        CALL calcul_flux_wind(knon, dtime, &
269         u0, v0, u1, v1, gustiness, cdragm, &
270         AcoefU, AcoefV, BcoefU, BcoefV, &
271         p1lay, temp_air, &
272         flux_u1, flux_v1)
273
274       
275       ! Set constants and compute some input for SISVAT
276       ! = 1000 hPa
277       ! and calculate incoming flux for SW and LW interval: swdown, lwdown
278       swdown(:)        = 0.0
279       lwdown(:)        = 0.0
280       snow_adv(:)      = 0.  ! no snow blown in for now
281       snow_cont_air(:) = 0.       
282       alb_soil(:)      = 0.4 ! before albedo(:) but here it is the ice albedo that we have to set
283       ustar(:)         = 0.
284       pref             = 100000.       
285       DO i = 1, knon
286          swdown(i)        = swnet(i)/(1-albedo(i))
287          lwdown(i)        = lwdownm(i)
288          wind_velo(i)     = u1(i)**2 + v1(i)**2
289          wind_velo(i)     = wind_velo(i)**0.5
290          pexner(i)        = (p1lay(i)/pref)**(RD/RCPD)
291          dens_air(i)      = p1lay(i)/RD/temp_air(i)  ! dry air density
292          zsl_height(i)    = pphi1(i)/RG     
293          tsoil0(i,:)      = tsoil(i,:) 
294          ustar(i)= (cdragm(i)*(wind_velo(i)**2))**0.5   
295       END DO
296       
297
298       ! Subtimestepping
299       
300        dtis=dtime/n_dtis
301
302        DO nt=1,n_dtis
303
304          IF (lafin .and. nt.eq.n_dtis) THEN
305            lafin_is=.true.
306          END IF
307
308        !PRINT*,'RENTRE DANS INLANDSIS','itime',itime,'dtime',dtime,'dtis',dtis
309        CALL surf_inlandsis(knon, rlon, rlat, knindex, itime, dtis, debut_is, lafin_is, &
310            rmu0, swdown, lwdown, albedo, pexner, ps, p1lay, &
311            precip_rain, precip_snow, precip_snow_adv, snow_adv, &
312            zsl_height, wind_velo, ustar, temp_air, dens_air, spechum, tsurf, &
313            rugoro, snow_cont_air, alb_soil, slope, cloudf, &
314            radsol, qsol, tsoil0, snow, zfra, snowhgt, qsnow, to_ice,sissnow, agesno, &
315            AcoefH, AcoefQ, BcoefH, BcoefQ, cdragm, cdragh, &
316            run_off_lic, evap, fluxsens, fluxlat, dflux_s, dflux_l, &       
317            tsurf_new, alb1, alb2, alb3, &
318            emis_new, z0m, z0h, qsurf)     
319
320         debut_is=.false.
321
322        END DO
323
324
325#else
326       abort_message='Pb de coherence: landice_opt = 2 mais CPP_INLANDSIS = .false.'
327       CALL abort_physic(modname,abort_message,1)
328#endif
329
330
331
332    ELSE
333
334!****************************************************************************************
335! Soil calculations
336!
337!****************************************************************************************
338
339    ! EV: use calbeta
340    CALL calbeta(dtime, is_lic, knon, snow, qsol, beta, cal, dif_grnd)
341
342
343    ! use soil model and recalculate properly cal
344    IF (soil_model) THEN
345       CALL soil(dtime, is_lic, knon, snow, tsurf, tsoil, soilcap, soilflux)
346       cal(1:knon) = RCPD / soilcap(1:knon)
347       radsol(1:knon)  = radsol(1:knon) + soilflux(1:knon)
348    ELSE
349       cal = RCPD * calice
350       WHERE (snow > 0.0) cal = RCPD * calsno
351    ENDIF
352
353
354!****************************************************************************************
355! Calulate fluxes
356!
357!****************************************************************************************
358!    beta(:) = 1.0
359!    dif_grnd(:) = 0.0
360
361! Suppose zero surface speed
362    u0(:)=0.0
363    v0(:)=0.0
364    u1_lay(:) = u1(:) - u0(:)
365    v1_lay(:) = v1(:) - v0(:)
366
367    CALL calcul_fluxs(knon, is_lic, dtime, &
368         tsurf, p1lay, cal, beta, cdragh, cdragh, ps, &
369         precip_rain, precip_snow, snow, qsurf,  &
370         radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, &
371         1.,AcoefH, AcoefQ, BcoefH, BcoefQ, &
372         tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
373
374    CALL calcul_flux_wind(knon, dtime, &
375         u0, v0, u1, v1, gustiness, cdragm, &
376         AcoefU, AcoefV, BcoefU, BcoefV, &
377         p1lay, temp_air, &
378         flux_u1, flux_v1)
379
380!****************************************************************************************
381! Calculate snow height, age, run-off,..
382!   
383!****************************************************************************************
384    CALL fonte_neige(knon, is_lic, knindex, dtime, &
385         tsurf, precip_rain, precip_snow, &
386         snow, qsol, tsurf_new, evap)
387
388
389!****************************************************************************************
390! Calculate albedo
391!
392!****************************************************************************************
393    CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)) 
394
395    WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
396    zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
397    alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + &
398         0.6 * (1.0-zfra(1:knon))
399!
400!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
401!       alb1(1 : knon)  = 0.6 !IM cf FH/GK
402!       alb1(1 : knon)  = 0.82
403!       alb1(1 : knon)  = 0.77 !211003 Ksta0.77
404!       alb1(1 : knon)  = 0.8 !KstaTER0.8 & LMD_ARMIP5
405!IM: KstaTER0.77 & LMD_ARMIP6   
406
407! Attantion: alb1 and alb2 are not the same!
408    alb1(1:knon)  = alb_vis_sno_lic
409    alb2(1:knon)  = alb_nir_sno_lic
410
411
412!****************************************************************************************
413! Rugosity
414!
415!****************************************************************************************
416    z0m=1.e-3
417    z0h = z0m
418    z0m = SQRT(z0m**2+rugoro**2)
419
420
421
422
423   
424
425    END IF ! landice_opt
426
427
428!****************************************************************************************
429! Send run-off on land-ice to coupler if coupled ocean.
430! run_off_lic has been calculated in fonte_neige or surf_sisvat
431!
432!****************************************************************************************
433    IF (type_ocean=='couple') THEN
434       CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic)
435    ENDIF
436
437 ! transfer runoff rate [kg/m2/s](!) to physiq for output
438    runoff(1:knon)=run_off_lic(1:knon)/dtime
439
440 
441!****************************************************************************************
442! Etienne: comment these lines because of duplication just below
443!       snow_o=0.
444!       zfra_o = 0.
445!       DO j = 1, knon
446!           i = knindex(j)
447!           snow_o(i) = snow(j)
448!           zfra_o(i) = zfra(j)
449!       ENDDO
450!
451!****************************************************************************************
452       snow_o=0.
453       zfra_o = 0.
454       DO j = 1, knon
455           i = knindex(j)
456           snow_o(i) = snow(j)
457           zfra_o(i) = zfra(j)
458       ENDDO
459
460
461!albedo SB >>>
462     select case(NSW)
463     case(2)
464       alb_dir(1:knon,1)=alb1(1:knon)
465       alb_dir(1:knon,2)=alb2(1:knon)
466     case(4)
467       alb_dir(1:knon,1)=alb1(1:knon)
468       alb_dir(1:knon,2)=alb2(1:knon)
469       alb_dir(1:knon,3)=alb2(1:knon)
470       alb_dir(1:knon,4)=alb2(1:knon)
471     case(6)
472       alb_dir(1:knon,1)=alb1(1:knon)
473       alb_dir(1:knon,2)=alb1(1:knon)
474       alb_dir(1:knon,3)=alb1(1:knon)
475       alb_dir(1:knon,4)=alb2(1:knon)
476       alb_dir(1:knon,5)=alb2(1:knon)
477       alb_dir(1:knon,6)=alb2(1:knon)
478     end select
479alb_dif=alb_dir
480!albedo SB <<<
481
482
483
484
485  END SUBROUTINE surf_landice
486!
487!****************************************************************************************
488!
489END MODULE surf_landice_mod
490
491
492
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