source: LMDZ6/trunk/libf/phylmd/surf_landice_mod.F90 @ 3670

Last change on this file since 3670 was 3102, checked in by oboucher, 7 years ago

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    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: 14.6 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, ok_snow
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    USE indice_sol_mod
39
40!    INCLUDE "indicesol.h"
41    INCLUDE "dimsoil.h"
42    INCLUDE "YOMCST.h"
43    INCLUDE "clesphys.h"
44
45! Input variables
46!****************************************************************************************
47    INTEGER, INTENT(IN)                           :: itime, knon
48    INTEGER, DIMENSION(klon), INTENT(in)          :: knindex
49    REAL, INTENT(in)                              :: dtime
50    REAL, DIMENSION(klon), INTENT(IN)             :: swnet ! net shortwave radiance
51    REAL, DIMENSION(klon), INTENT(IN)             :: lwnet ! net longwave radiance
52    REAL, DIMENSION(klon), INTENT(IN)             :: tsurf
53    REAL, DIMENSION(klon), INTENT(IN)             :: p1lay
54    REAL, DIMENSION(klon), INTENT(IN)             :: cdragh, cdragm
55    REAL, DIMENSION(klon), INTENT(IN)             :: precip_rain, precip_snow
56    REAL, DIMENSION(klon), INTENT(IN)             :: temp_air, spechum
57    REAL, DIMENSION(klon), INTENT(IN)             :: AcoefH, AcoefQ
58    REAL, DIMENSION(klon), INTENT(IN)             :: BcoefH, BcoefQ
59    REAL, DIMENSION(klon), INTENT(IN)             :: AcoefU, AcoefV, BcoefU, BcoefV
60    REAL, DIMENSION(klon), INTENT(IN)             :: ps
61    REAL, DIMENSION(klon), INTENT(IN)             :: u1, v1, gustiness
62    REAL, DIMENSION(klon), INTENT(IN)             :: rugoro
63    REAL, DIMENSION(klon,nbsrf), INTENT(IN)       :: pctsrf
64
65    LOGICAL,  INTENT(IN)                          :: debut   !true if first step
66    LOGICAL,  INTENT(IN)                          :: lafin   !true if last step
67    REAL, DIMENSION(klon), INTENT(IN)             :: rlon, rlat
68    REAL, DIMENSION(klon), INTENT(IN)             :: rmu0
69    REAL, DIMENSION(klon), INTENT(IN)             :: lwdownm !ylwdown
70    REAL, DIMENSION(klon), INTENT(IN)             :: albedo  !mean albedo
71    REAL, DIMENSION(klon), INTENT(IN)             :: pphi1   
72    REAL, DIMENSION(klon), INTENT(IN)             :: slope   !mean slope in grid box 
73    REAL, DIMENSION(klon), INTENT(IN)             :: cloudf  !total cloud fraction
74
75! In/Output variables
76!****************************************************************************************
77    REAL, DIMENSION(klon), INTENT(INOUT)          :: snow, qsol
78    REAL, DIMENSION(klon), INTENT(INOUT)          :: agesno
79    REAL, DIMENSION(klon, nsoilmx), INTENT(INOUT) :: tsoil
80
81! Output variables
82!****************************************************************************************
83    REAL, DIMENSION(klon), INTENT(OUT)            :: qsurf
84    REAL, DIMENSION(klon), INTENT(OUT)            :: z0m, z0h
85!albedo SB >>>
86!    REAL, DIMENSION(klon), INTENT(OUT)            :: alb1  ! new albedo in visible SW interval
87!    REAL, DIMENSION(klon), INTENT(OUT)            :: alb2  ! new albedo in near IR interval
88    REAL, DIMENSION(6), INTENT(IN)              ::SFRWL
89    REAL, DIMENSION(klon,nsw), INTENT(OUT)        ::alb_dir,alb_dif
90!albedo SB <<<
91    REAL, DIMENSION(klon), INTENT(OUT)            :: evap, fluxsens, fluxlat
92    REAL, DIMENSION(klon), INTENT(OUT)            :: tsurf_new
93    REAL, DIMENSION(klon), INTENT(OUT)            :: dflux_s, dflux_l     
94    REAL, DIMENSION(klon), INTENT(OUT)            :: flux_u1, flux_v1
95
96    REAL, DIMENSION(klon), INTENT(OUT)           :: alb3
97    REAL, DIMENSION(klon), INTENT(OUT)           :: qsnow   !column water in snow [kg/m2]
98    REAL, DIMENSION(klon), INTENT(OUT)           :: snowhgt !Snow height (m)
99    REAL, DIMENSION(klon), INTENT(OUT)           :: to_ice
100    REAL, DIMENSION(klon), INTENT(OUT)           :: sissnow
101    REAL, DIMENSION(klon), INTENT(OUT)           :: runoff  !Land ice runoff
102 
103
104! Local variables
105!****************************************************************************************
106    REAL, DIMENSION(klon)    :: soilcap, soilflux
107    REAL, DIMENSION(klon)    :: cal, beta, dif_grnd
108    REAL, DIMENSION(klon)    :: zfra, alb_neig
109    REAL, DIMENSION(klon)    :: radsol
110    REAL, DIMENSION(klon)    :: u0, v0, u1_lay, v1_lay
111    INTEGER                  :: i,j
112
113    REAL, DIMENSION(klon)    :: emis_new                  !Emissivity
114    REAL, DIMENSION(klon)    :: swdown,lwdown
115    REAL, DIMENSION(klon)    :: precip_snow_adv, snow_adv !Snow Drift precip./advection
116    REAL, DIMENSION(klon)    :: bl_height, wind_velo      !height boundary layer, wind spd
117    REAL, DIMENSION(klon)    :: dens_air,  snow_cont_air  !air density; snow content air
118    REAL, DIMENSION(klon)    :: alb_soil                  !albedo of underlying ice
119    REAL, DIMENSION(klon)    :: pexner                    !Exner potential
120    REAL                     :: pref
121    REAL, DIMENSION(klon,nsoilmx) :: tsoil0 !modfi
122
123    CHARACTER (len = 20)                      :: modname = 'surf_landice'
124    CHARACTER (len = 80)                      :: abort_message
125
126
127!albedo SB >>>
128    real,dimension(klon) :: alb1,alb2
129!albedo SB <<<
130
131! End definition
132!****************************************************************************************
133!FC
134!FC
135   REAL,SAVE :: alb_vis_sno_lic
136  !$OMP THREADPRIVATE(alb_vis_sno_lic)
137   REAL,SAVE :: alb_nir_sno_lic
138  !$OMP THREADPRIVATE(alb_nir_sno_lic)
139  LOGICAL, SAVE :: firstcall = .TRUE.
140  !$OMP THREADPRIVATE(firstcall)
141!FC
142
143
144  IF (firstcall) THEN
145  alb_vis_sno_lic=0.77
146  CALL getin_p('alb_vis_sno_lic',alb_vis_sno_lic)
147           PRINT*, 'alb_vis_sno_lic',alb_vis_sno_lic
148  alb_nir_sno_lic=0.77
149  CALL getin_p('alb_nir_sno_lic',alb_nir_sno_lic)
150           PRINT*, 'alb_nir_sno_lic',alb_nir_sno_lic
151  firstcall=.false.
152  ENDIF
153!
154! Initialize output variables
155    alb3(:) = 999999.
156    alb2(:) = 999999.
157    alb1(:) = 999999.
158   
159    runoff(:) = 0.
160!****************************************************************************************
161! Calculate total absorbed radiance at surface
162!
163!****************************************************************************************
164    radsol(:) = 0.0
165    radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
166
167!****************************************************************************************
168!   ok_snow = TRUE  : prepare and call SISVAT snow model
169!   ok_snow = FALSE : soil_model, calcul_flux, fonte_neige, ...
170!
171!****************************************************************************************
172    IF (ok_snow) THEN
173#ifdef CPP_SISVAT
174       ! Prepare for calling SISVAT
175       
176       ! Calculate incoming flux for SW and LW interval: swdown, lwdown
177       swdown(:)        = 0.0
178       lwdown(:)        = 0.0
179       DO i = 1, knon
180          swdown(i)        = swnet(i)/(1-albedo(i))
181          lwdown(i)        = lwdownm(i)
182       END DO
183       
184       ! Set constants and compute some input for SISVAT
185       snow_adv(:)      = 0.                          ! no snow blown in for now
186       snow_cont_air(:) = 0.       
187       alb_soil(:)      = albedo(:)
188       pref             = 100000.                     ! = 1000 hPa
189       DO i = 1, knon
190          wind_velo(i)     = u1(i)**2 + v1(i)**2
191          wind_velo(i)     = wind_velo(i)**0.5
192          pexner(i)        = (p1lay(i)/pref)**(RD/RCPD)
193          dens_air(i)      = p1lay(i)/RD/temp_air(i)  ! dry air density
194          bl_height(i)     = pphi1(i)/RG             
195       END DO
196
197!****************************************************************************************
198! CALL to SISVAT interface
199!
200!****************************************************************************************
201       ! config: compute everything with SV but temperatures afterwards with soil/calculfluxs
202       DO i = 1, knon
203          tsoil0(i,:)=tsoil(i,:)
204       END DO
205           ! Martin
206           PRINT*, 'on appelle surf_sisvat'
207           ! Martin
208       CALL surf_sisvat(knon, rlon, rlat, knindex, itime, dtime, debut, lafin, &
209            rmu0, swdown, lwdown, pexner, ps, p1lay, &
210            precip_rain, precip_snow, precip_snow_adv, snow_adv, &
211            bl_height, wind_velo, temp_air, dens_air, spechum, tsurf, &
212            rugoro, snow_cont_air, alb_soil, slope, cloudf, &
213            radsol, qsol, tsoil0, snow, snowhgt, qsnow, to_ice,sissnow, agesno, &
214            AcoefH, AcoefQ, BcoefH, BcoefQ, cdragh, &
215            run_off_lic, evap, fluxsens, fluxlat, dflux_s, dflux_l, &       
216            tsurf_new, alb1, alb2, alb3, &
217            emis_new, z0m, qsurf)
218       z0h(1:knon)=z0m(1:knon) ! en attendant mieux
219       
220       ! Suppose zero surface speed
221       u0(:)            = 0.0
222       v0(:)            = 0.0
223       ! The calculation of heat/water fluxes, otherwise done by "CALL calcul_fluxs" is
224       ! integrated in SISVAT, using the same method. It can be found in "sisvat.f", in the
225       ! subroutine "SISVAT_TS2".
226       ! u0, v0=0., dif_grnd=0. and beta=1 are assumed there!
227       
228       CALL calcul_flux_wind(knon, dtime, &
229            u0, v0, u1, v1, gustiness, cdragm, &
230            AcoefU, AcoefV, BcoefU, BcoefV, &
231            p1lay, temp_air, &
232            flux_u1, flux_v1)
233#else
234       abort_message='Pb de coherence: ok_snow = .true. mais CPP_SISVAT = .false.'
235       CALL abort_physic(modname,abort_message,1)
236#endif
237    ELSE ! ok_snow=FALSE
238
239!****************************************************************************************
240! Soil calculations
241!
242!****************************************************************************************
243    IF (soil_model) THEN
244       CALL soil(dtime, is_lic, knon, snow, tsurf, tsoil, soilcap, soilflux)
245       cal(1:knon) = RCPD / soilcap(1:knon)
246       radsol(1:knon)  = radsol(1:knon) + soilflux(1:knon)
247    ELSE
248       cal = RCPD * calice
249       WHERE (snow > 0.0) cal = RCPD * calsno
250    ENDIF
251
252
253!****************************************************************************************
254! Calulate fluxes
255!
256!****************************************************************************************
257    beta(:) = 1.0
258    dif_grnd(:) = 0.0
259
260! Suppose zero surface speed
261    u0(:)=0.0
262    v0(:)=0.0
263    u1_lay(:) = u1(:) - u0(:)
264    v1_lay(:) = v1(:) - v0(:)
265
266    CALL calcul_fluxs(knon, is_lic, dtime, &
267         tsurf, p1lay, cal, beta, cdragh, cdragh, ps, &
268         precip_rain, precip_snow, snow, qsurf,  &
269         radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, &
270         1.,AcoefH, AcoefQ, BcoefH, BcoefQ, &
271         tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
272
273    CALL calcul_flux_wind(knon, dtime, &
274         u0, v0, u1, v1, gustiness, cdragm, &
275         AcoefU, AcoefV, BcoefU, BcoefV, &
276         p1lay, temp_air, &
277         flux_u1, flux_v1)
278
279!****************************************************************************************
280! Calculate snow height, age, run-off,..
281!   
282!****************************************************************************************
283    CALL fonte_neige( knon, is_lic, knindex, dtime, &
284         tsurf, precip_rain, precip_snow, &
285         snow, qsol, tsurf_new, evap)
286
287
288!****************************************************************************************
289! Calculate albedo
290!
291!****************************************************************************************
292    CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)) 
293    WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
294    zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
295    alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + &
296         0.6 * (1.0-zfra(1:knon))
297!
298!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
299!       alb1(1 : knon)  = 0.6 !IM cf FH/GK
300!       alb1(1 : knon)  = 0.82
301!       alb1(1 : knon)  = 0.77 !211003 Ksta0.77
302!       alb1(1 : knon)  = 0.8 !KstaTER0.8 & LMD_ARMIP5
303!IM: KstaTER0.77 & LMD_ARMIP6   
304
305! Attantion: alb1 and alb2 are the same!
306    alb1(1:knon)  = alb_vis_sno_lic
307    alb2(1:knon)  = alb_nir_sno_lic
308
309
310!****************************************************************************************
311! Rugosity
312!
313!****************************************************************************************
314    z0m=1.e-3
315    z0h = z0m
316    z0m = SQRT(z0m**2+rugoro**2)
317
318    END IF ! ok_snow
319
320
321!****************************************************************************************
322! Send run-off on land-ice to coupler if coupled ocean.
323! run_off_lic has been calculated in fonte_neige or surf_sisvat
324!
325!****************************************************************************************
326    IF (type_ocean=='couple') THEN
327       CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic)
328    ENDIF
329
330 ! transfer runoff rate [kg/m2/s](!) to physiq for output
331    runoff(1:knon)=run_off_lic(1:knon)/dtime
332
333 
334!****************************************************************************************
335       snow_o=0.
336       zfra_o = 0.
337       DO j = 1, knon
338           i = knindex(j)
339           snow_o(i) = snow(j)
340           zfra_o(i) = zfra(j)
341       ENDDO
342
343!****************************************************************************************
344       snow_o=0.
345       zfra_o = 0.
346       DO j = 1, knon
347           i = knindex(j)
348           snow_o(i) = snow(j)
349           zfra_o(i) = zfra(j)
350       ENDDO
351
352
353!albedo SB >>>
354     select case(NSW)
355     case(2)
356       alb_dir(1:knon,1)=alb1(1:knon)
357       alb_dir(1:knon,2)=alb2(1:knon)
358     case(4)
359       alb_dir(1:knon,1)=alb1(1:knon)
360       alb_dir(1:knon,2)=alb2(1:knon)
361       alb_dir(1:knon,3)=alb2(1:knon)
362       alb_dir(1:knon,4)=alb2(1:knon)
363     case(6)
364       alb_dir(1:knon,1)=alb1(1:knon)
365       alb_dir(1:knon,2)=alb1(1:knon)
366       alb_dir(1:knon,3)=alb1(1:knon)
367       alb_dir(1:knon,4)=alb2(1:knon)
368       alb_dir(1:knon,5)=alb2(1:knon)
369       alb_dir(1:knon,6)=alb2(1:knon)
370     end select
371alb_dif=alb_dir
372!albedo SB <<<
373
374
375
376
377  END SUBROUTINE surf_landice
378!
379!****************************************************************************************
380!
381END MODULE surf_landice_mod
382
383
384
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