source: LMDZ6/trunk/libf/phylmd/surf_landice_mod.F90 @ 4046

Last change on this file since 4046 was 3974, checked in by asima, 3 years ago

In the "bucket" soil model, soil thermal inertia (formerly a constant value) can also be now a function of soil moisture "qsol"
(F Cheruy's idea; results from "Stage L3" Eve Rebouillat, with E Vignon, A Sima, F Cheruy).

The function depends on iflag_inertie, read from physiq.def (via conf_phys_m.F90), as follows :
(only in physiq.def_NPv6.1 for the time being)

# Controle de la definition de l'inertie thermique du sol dans le modele "bucket":
# 0 (default) : constant
# 1 : fonction lineaire de qsol
# 2 : 2 fonctions lineaires de qsol :
# une pour "sable" (boite lat/lon pour Sahara), une pour le reste (limons et argile)
# 3 : fonction lineaire de qsol, valeurs entre 900 pour qsol=0 et 2000 pour qsol=150

iflag_inertie=0

Relevant changes are in soil.F90 and physiq.def_NPv6.1 ; the other files are adjusted accordingly.
  • 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: 16.3 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       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)    :: emis_new                  !Emissivity
118    REAL, DIMENSION(klon)    :: swdown,lwdown
119    REAL, DIMENSION(klon)    :: precip_snow_adv, snow_adv !Snow Drift precip./advection (not used in inlandsis)
120    REAL, DIMENSION(klon)    :: erod                      !erosion of surface snow (flux, kg/m2/s like evap)
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    REAL,DIMENSION(klon) :: alb1,alb2
135    REAL, DIMENSION (klon,6) :: alb6
136! End definition
137!****************************************************************************************
138!FC
139!FC
140   REAL,SAVE :: alb_vis_sno_lic
141  !$OMP THREADPRIVATE(alb_vis_sno_lic)
142   REAL,SAVE :: alb_nir_sno_lic
143  !$OMP THREADPRIVATE(alb_nir_sno_lic)
144  LOGICAL, SAVE :: firstcall = .TRUE.
145  !$OMP THREADPRIVATE(firstcall)
146
147
148!FC firtscall initializations
149!******************************************************************************************
150  IF (firstcall) THEN
151  alb_vis_sno_lic=0.77
152  CALL getin_p('alb_vis_sno_lic',alb_vis_sno_lic)
153           PRINT*, 'alb_vis_sno_lic',alb_vis_sno_lic
154  alb_nir_sno_lic=0.77
155  CALL getin_p('alb_nir_sno_lic',alb_nir_sno_lic)
156           PRINT*, 'alb_nir_sno_lic',alb_nir_sno_lic
157 
158!  z0m=1.e-3
159!  z0h = z0m
160  firstcall=.false.
161  ENDIF
162!******************************************************************************************
163
164! Initialize output variables
165    alb3(:) = 999999.
166    alb2(:) = 999999.
167    alb1(:) = 999999.
168   
169    runoff(:) = 0.
170!****************************************************************************************
171! Calculate total absorbed radiance at surface
172!
173!****************************************************************************************
174    radsol(:) = 0.0
175    radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
176
177!****************************************************************************************
178!  landice_opt = 0 : soil_model, calcul_flux, fonte_neige, ... 
179!  landice_opt = 1  : prepare and call INterace Lmdz SISvat (INLANDSIS)
180!****************************************************************************************
181
182
183    IF (landice_opt .EQ. 1) THEN
184
185!****************************************************************************************   
186! CALL to INLANDSIS interface
187!****************************************************************************************
188#ifdef CPP_INLANDSIS
189
190        debut_is=debut
191        lafin_is=.false.
192        ! Suppose zero surface speed
193        u0(:)            = 0.0
194        v0(:)            = 0.0
195
196
197        CALL calcul_flux_wind(knon, dtime, &
198         u0, v0, u1, v1, gustiness, cdragm, &
199         AcoefU, AcoefV, BcoefU, BcoefV, &
200         p1lay, temp_air, &
201         flux_u1, flux_v1)
202
203       
204       ! Set constants and compute some input for SISVAT
205       ! = 1000 hPa
206       ! and calculate incoming flux for SW and LW interval: swdown, lwdown
207       swdown(:)        = 0.0
208       lwdown(:)        = 0.0
209       snow_cont_air(:) = 0.  ! the snow content in air is not a prognostic variable of the model     
210       alb_soil(:)      = 0.4 ! before albedo(:) but here it is the ice albedo that we have to set
211       ustar(:)         = 0.
212       pref             = 100000.       
213       DO i = 1, knon
214          swdown(i)        = swnet(i)/(1-albedo(i))
215          lwdown(i)        = lwdownm(i)
216          wind_velo(i)     = u1(i)**2 + v1(i)**2
217          wind_velo(i)     = wind_velo(i)**0.5
218          pexner(i)        = (p1lay(i)/pref)**(RD/RCPD)
219          dens_air(i)      = p1lay(i)/RD/temp_air(i)  ! dry air density
220          zsl_height(i)    = pphi1(i)/RG     
221          tsoil0(i,:)      = tsoil(i,:) 
222          ustar(i)= (cdragm(i)*(wind_velo(i)**2))**0.5   
223       END DO
224       
225
226
227        dtis=dtime
228
229          IF (lafin) THEN
230            lafin_is=.true.
231          END IF
232
233          CALL surf_inlandsis(knon, rlon, rlat, knindex, itime, dtis, debut_is, lafin_is,&
234            rmu0, swdown, lwdown, albedo, pexner, ps, p1lay, precip_rain, precip_snow,   &
235            zsl_height, wind_velo, ustar, temp_air, dens_air, spechum, tsurf,&
236            rugoro, snow_cont_air, alb_soil, alt, slope, cloudf, &
237            radsol, qsol, tsoil0, snow, zfra, snowhgt, qsnow, to_ice, sissnow,agesno,   &
238            AcoefH, AcoefQ, BcoefH, BcoefQ, cdragm, cdragh, &
239            run_off_lic, fqfonte, ffonte, evap, erod, fluxsens, fluxlat,dflux_s, dflux_l, &
240            tsurf_new, alb1, alb2, alb3, alb6, &
241            emis_new, z0m, z0h, qsurf)
242
243          debut_is=.false.
244
245
246        ! Treatment of snow melting and calving
247
248        ! for consistency with standard LMDZ, add calving to run_off_lic
249        run_off_lic(:)=run_off_lic(:) + to_ice(:)
250
251        DO i = 1, knon
252           ffonte_global(knindex(i),is_lic)    = ffonte(i)
253           fqfonte_global(knindex(i),is_lic)   = fqfonte(i)! net melting= melting - refreezing
254           fqcalving_global(knindex(i),is_lic) = to_ice(i) ! flux
255           runofflic_global(knindex(i)) = run_off_lic(i)
256        ENDDO
257        ! Here, we assume that the calving term is equal to the to_ice term
258        ! (no ice accumulation)
259
260
261#else
262       abort_message='Pb de coherence: landice_opt = 1  mais CPP_INLANDSIS = .false.'
263       CALL abort_physic(modname,abort_message,1)
264#endif
265
266
267
268    ELSE
269
270!****************************************************************************************
271! Soil calculations
272!
273!****************************************************************************************
274
275    ! EV: use calbeta
276    CALL calbeta(dtime, is_lic, knon, snow, qsol, beta, cal, dif_grnd)
277
278
279    ! use soil model and recalculate properly cal
280    IF (soil_model) THEN
281       CALL soil(dtime, is_lic, knon, snow, tsurf, qsol, &
282        & longitude(knindex(1:knon)), latitude(knindex(1:knon)), tsoil, soilcap, soilflux)
283       cal(1:knon) = RCPD / soilcap(1:knon)
284       radsol(1:knon)  = radsol(1:knon) + soilflux(1:knon)
285    ELSE
286       cal = RCPD * calice
287       WHERE (snow > 0.0) cal = RCPD * calsno
288    ENDIF
289
290
291!****************************************************************************************
292! Calulate fluxes
293!
294!****************************************************************************************
295!    beta(:) = 1.0
296!    dif_grnd(:) = 0.0
297
298! Suppose zero surface speed
299    u0(:)=0.0
300    v0(:)=0.0
301    u1_lay(:) = u1(:) - u0(:)
302    v1_lay(:) = v1(:) - v0(:)
303
304    CALL calcul_fluxs(knon, is_lic, dtime, &
305         tsurf, p1lay, cal, beta, cdragh, cdragh, ps, &
306         precip_rain, precip_snow, snow, qsurf,  &
307         radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, &
308         1.,AcoefH, AcoefQ, BcoefH, BcoefQ, &
309         tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
310
311    CALL calcul_flux_wind(knon, dtime, &
312         u0, v0, u1, v1, gustiness, cdragm, &
313         AcoefU, AcoefV, BcoefU, BcoefV, &
314         p1lay, temp_air, &
315         flux_u1, flux_v1)
316
317!****************************************************************************************
318! Calculate snow height, age, run-off,..
319!   
320!****************************************************************************************
321    CALL fonte_neige(knon, is_lic, knindex, dtime, &
322         tsurf, precip_rain, precip_snow, &
323         snow, qsol, tsurf_new, evap)
324
325
326!****************************************************************************************
327! Calculate albedo
328!
329!****************************************************************************************
330    CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)) 
331
332    WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
333    zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
334    alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + &
335         0.6 * (1.0-zfra(1:knon))
336!
337!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
338!       alb1(1 : knon)  = 0.6 !IM cf FH/GK
339!       alb1(1 : knon)  = 0.82
340!       alb1(1 : knon)  = 0.77 !211003 Ksta0.77
341!       alb1(1 : knon)  = 0.8 !KstaTER0.8 & LMD_ARMIP5
342!IM: KstaTER0.77 & LMD_ARMIP6   
343
344! Attantion: alb1 and alb2 are not the same!
345    alb1(1:knon)  = alb_vis_sno_lic
346    alb2(1:knon)  = alb_nir_sno_lic
347
348
349!****************************************************************************************
350! Rugosity
351!
352!****************************************************************************************
353    z0m=1.e-3
354    z0h = z0m
355    z0m = SQRT(z0m**2+rugoro**2)
356
357
358
359    END IF ! landice_opt
360
361
362!****************************************************************************************
363! Send run-off on land-ice to coupler if coupled ocean.
364! run_off_lic has been calculated in fonte_neige or surf_inlandsis
365!
366!****************************************************************************************
367    IF (type_ocean=='couple') THEN
368       CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic)
369    ENDIF
370
371 ! transfer runoff rate [kg/m2/s](!) to physiq for output
372    runoff(1:knon)=run_off_lic(1:knon)/dtime
373
374 
375!****************************************************************************************
376! Etienne: comment these lines because of duplication just below
377!       snow_o=0.
378!       zfra_o = 0.
379!       DO j = 1, knon
380!           i = knindex(j)
381!           snow_o(i) = snow(j)
382!           zfra_o(i) = zfra(j)
383!       ENDDO
384!
385!****************************************************************************************
386       snow_o=0.
387       zfra_o = 0.
388       DO j = 1, knon
389           i = knindex(j)
390           snow_o(i) = snow(j)
391           zfra_o(i) = zfra(j)
392       ENDDO
393
394
395!albedo SB >>>
396     select case(NSW)
397     case(2)
398       alb_dir(1:knon,1)=alb1(1:knon)
399       alb_dir(1:knon,2)=alb2(1:knon)
400     case(4)
401       alb_dir(1:knon,1)=alb1(1:knon)
402       alb_dir(1:knon,2)=alb2(1:knon)
403       alb_dir(1:knon,3)=alb2(1:knon)
404       alb_dir(1:knon,4)=alb2(1:knon)
405     case(6)
406       alb_dir(1:knon,1)=alb1(1:knon)
407       alb_dir(1:knon,2)=alb1(1:knon)
408       alb_dir(1:knon,3)=alb1(1:knon)
409       alb_dir(1:knon,4)=alb2(1:knon)
410       alb_dir(1:knon,5)=alb2(1:knon)
411       alb_dir(1:knon,6)=alb2(1:knon)
412
413       IF ((landice_opt .EQ. 1) .AND. (iflag_albcalc .EQ. 2)) THEN
414       alb_dir(1:knon,1)=alb6(1:knon,1)
415       alb_dir(1:knon,2)=alb6(1:knon,2)
416       alb_dir(1:knon,3)=alb6(1:knon,3)
417       alb_dir(1:knon,4)=alb6(1:knon,4)
418       alb_dir(1:knon,5)=alb6(1:knon,5)
419       alb_dir(1:knon,6)=alb6(1:knon,6)
420       ENDIF
421
422     end select
423alb_dif=alb_dir
424!albedo SB <<<
425
426 
427 
428
429  END SUBROUTINE surf_landice
430!
431!****************************************************************************************
432!
433END MODULE surf_landice_mod
434
435
436
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