source: LMDZ5/branches/testing/libf/phylmd/surf_landice_mod.F90 @ 2544

Last change on this file since 2544 was 2408, checked in by Laurent Fairhead, 9 years ago

Merged trunk changes r2298:2396 into testing branch
  • 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:executable set to *
  • Property svn:keywords set to Author Date Id Revision
File size: 14.0 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, 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#ifdef CPP_SISVAT
33    USE surf_sisvat_mod,  ONLY : surf_sisvat
34#endif
35    USE indice_sol_mod
36
37!    INCLUDE "indicesol.h"
38    INCLUDE "dimsoil.h"
39    INCLUDE "YOMCST.h"
40    INCLUDE "clesphys.h"
41
42! Input variables
43!****************************************************************************************
44    INTEGER, INTENT(IN)                           :: itime, knon
45    INTEGER, DIMENSION(klon), INTENT(in)          :: knindex
46    REAL, INTENT(in)                              :: dtime
47    REAL, DIMENSION(klon), INTENT(IN)             :: swnet ! net shortwave radiance
48    REAL, DIMENSION(klon), INTENT(IN)             :: lwnet ! net longwave radiance
49    REAL, DIMENSION(klon), INTENT(IN)             :: tsurf
50    REAL, DIMENSION(klon), INTENT(IN)             :: p1lay
51    REAL, DIMENSION(klon), INTENT(IN)             :: cdragh, cdragm
52    REAL, DIMENSION(klon), INTENT(IN)             :: precip_rain, precip_snow
53    REAL, DIMENSION(klon), INTENT(IN)             :: temp_air, spechum
54    REAL, DIMENSION(klon), INTENT(IN)             :: AcoefH, AcoefQ
55    REAL, DIMENSION(klon), INTENT(IN)             :: BcoefH, BcoefQ
56    REAL, DIMENSION(klon), INTENT(IN)             :: AcoefU, AcoefV, BcoefU, BcoefV
57    REAL, DIMENSION(klon), INTENT(IN)             :: ps
58    REAL, DIMENSION(klon), INTENT(IN)             :: u1, v1, gustiness
59    REAL, DIMENSION(klon), INTENT(IN)             :: rugoro
60    REAL, DIMENSION(klon,nbsrf), INTENT(IN)       :: pctsrf
61
62    LOGICAL,  INTENT(IN)                          :: debut   !true if first step
63    LOGICAL,  INTENT(IN)                          :: lafin   !true if last step
64    REAL, DIMENSION(klon), INTENT(IN)             :: rlon, rlat
65    REAL, DIMENSION(klon), INTENT(IN)             :: rmu0
66    REAL, DIMENSION(klon), INTENT(IN)             :: lwdownm !ylwdown
67    REAL, DIMENSION(klon), INTENT(IN)             :: albedo  !mean albedo
68    REAL, DIMENSION(klon), INTENT(IN)             :: pphi1   
69    REAL, DIMENSION(klon), INTENT(IN)             :: slope   !mean slope in grid box 
70    REAL, DIMENSION(klon), INTENT(IN)             :: cloudf  !total cloud fraction
71
72! In/Output variables
73!****************************************************************************************
74    REAL, DIMENSION(klon), INTENT(INOUT)          :: snow, qsol
75    REAL, DIMENSION(klon), INTENT(INOUT)          :: agesno
76    REAL, DIMENSION(klon, nsoilmx), INTENT(INOUT) :: tsoil
77
78! Output variables
79!****************************************************************************************
80    REAL, DIMENSION(klon), INTENT(OUT)            :: qsurf
81    REAL, DIMENSION(klon), INTENT(OUT)            :: z0m, z0h
82!albedo SB >>>
83!    REAL, DIMENSION(klon), INTENT(OUT)            :: alb1  ! new albedo in visible SW interval
84!    REAL, DIMENSION(klon), INTENT(OUT)            :: alb2  ! new albedo in near IR interval
85    REAL, DIMENSION(6), INTENT(IN)              ::SFRWL
86    REAL, DIMENSION(klon,nsw), INTENT(OUT)        ::alb_dir,alb_dif
87!albedo SB <<<
88    REAL, DIMENSION(klon), INTENT(OUT)            :: evap, fluxsens, fluxlat
89    REAL, DIMENSION(klon), INTENT(OUT)            :: tsurf_new
90    REAL, DIMENSION(klon), INTENT(OUT)            :: dflux_s, dflux_l     
91    REAL, DIMENSION(klon), INTENT(OUT)            :: flux_u1, flux_v1
92
93    REAL, DIMENSION(klon), INTENT(OUT)           :: alb3
94    REAL, DIMENSION(klon), INTENT(OUT)           :: qsnow   !column water in snow [kg/m2]
95    REAL, DIMENSION(klon), INTENT(OUT)           :: snowhgt !Snow height (m)
96    REAL, DIMENSION(klon), INTENT(OUT)           :: to_ice
97    REAL, DIMENSION(klon), INTENT(OUT)           :: sissnow
98    REAL, DIMENSION(klon), INTENT(OUT)           :: runoff  !Land ice runoff
99 
100
101! Local variables
102!****************************************************************************************
103    REAL, DIMENSION(klon)    :: soilcap, soilflux
104    REAL, DIMENSION(klon)    :: cal, beta, dif_grnd
105    REAL, DIMENSION(klon)    :: zfra, alb_neig
106    REAL, DIMENSION(klon)    :: radsol
107    REAL, DIMENSION(klon)    :: u0, v0, u1_lay, v1_lay
108    INTEGER                  :: i,j
109
110    REAL, DIMENSION(klon)    :: emis_new                  !Emissivity
111    REAL, DIMENSION(klon)    :: swdown,lwdown
112    REAL, DIMENSION(klon)    :: precip_snow_adv, snow_adv !Snow Drift precip./advection
113    REAL, DIMENSION(klon)    :: bl_height, wind_velo      !height boundary layer, wind spd
114    REAL, DIMENSION(klon)    :: dens_air,  snow_cont_air  !air density; snow content air
115    REAL, DIMENSION(klon)    :: alb_soil                  !albedo of underlying ice
116    REAL, DIMENSION(klon)    :: pexner                    !Exner potential
117    REAL                     :: pref
118    REAL, DIMENSION(klon,nsoilmx) :: tsoil0 !modfi
119
120    CHARACTER (len = 20)                      :: modname = 'surf_landice'
121    CHARACTER (len = 80)                      :: abort_message
122
123!albedo SB >>>
124    real,dimension(klon) :: alb1,alb2
125!albedo SB <<<
126
127! End definition
128!****************************************************************************************
129!
130! Initialize output variables
131    alb3(:) = 999999.
132    alb2(:) = 999999.
133    alb1(:) = 999999.
134   
135    runoff(:) = 0.
136!****************************************************************************************
137! Calculate total absorbed radiance at surface
138!
139!****************************************************************************************
140    radsol(:) = 0.0
141    radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
142
143!****************************************************************************************
144!   ok_snow = TRUE  : prepare and call SISVAT snow model
145!   ok_snow = FALSE : soil_model, calcul_flux, fonte_neige, ...
146!
147!****************************************************************************************
148    IF (ok_snow) THEN
149#ifdef CPP_SISVAT
150       ! Prepare for calling SISVAT
151       
152       ! Calculate incoming flux for SW and LW interval: swdown, lwdown
153       swdown(:)        = 0.0
154       lwdown(:)        = 0.0
155       DO i = 1, knon
156          swdown(i)        = swnet(i)/(1-albedo(i))
157          lwdown(i)        = lwdownm(i)
158       END DO
159       
160       ! Set constants and compute some input for SISVAT
161       snow_adv(:)      = 0.                          ! no snow blown in for now
162       snow_cont_air(:) = 0.       
163       alb_soil(:)      = albedo(:)
164       pref             = 100000.                     ! = 1000 hPa
165       DO i = 1, knon
166          wind_velo(i)     = u1(i)**2 + v1(i)**2
167          wind_velo(i)     = wind_velo(i)**0.5
168          pexner(i)        = (p1lay(i)/pref)**(RD/RCPD)
169          dens_air(i)      = p1lay(i)/RD/temp_air(i)  ! dry air density
170          bl_height(i)     = pphi1(i)/RG             
171       END DO
172
173!****************************************************************************************
174! CALL to SISVAT interface
175!
176!****************************************************************************************
177       ! config: compute everything with SV but temperatures afterwards with soil/calculfluxs
178       DO i = 1, knon
179          tsoil0(i,:)=tsoil(i,:)
180       END DO
181           ! Martin
182           PRINT*, 'on appelle surf_sisvat'
183           ! Martin
184       CALL surf_sisvat(knon, rlon, rlat, knindex, itime, dtime, debut, lafin, &
185            rmu0, swdown, lwdown, pexner, ps, p1lay, &
186            precip_rain, precip_snow, precip_snow_adv, snow_adv, &
187            bl_height, wind_velo, temp_air, dens_air, spechum, tsurf, &
188            rugoro, snow_cont_air, alb_soil, slope, cloudf, &
189            radsol, qsol, tsoil0, snow, snowhgt, qsnow, to_ice,sissnow, agesno, &
190            AcoefH, AcoefQ, BcoefH, BcoefQ, cdragh, &
191            run_off_lic, evap, fluxsens, fluxlat, dflux_s, dflux_l, &       
192            tsurf_new, alb1, alb2, alb3, &
193            emis_new, z0m, qsurf)
194       z0h(1:knon)=z0m(1:knon) ! en attendant mieux
195       
196       ! Suppose zero surface speed
197       u0(:)            = 0.0
198       v0(:)            = 0.0
199       ! The calculation of heat/water fluxes, otherwise done by "CALL calcul_fluxs" is
200       ! integrated in SISVAT, using the same method. It can be found in "sisvat.f", in the
201       ! subroutine "SISVAT_TS2".
202       ! u0, v0=0., dif_grnd=0. and beta=1 are assumed there!
203       
204       CALL calcul_flux_wind(knon, dtime, &
205            u0, v0, u1, v1, gustiness, cdragm, &
206            AcoefU, AcoefV, BcoefU, BcoefV, &
207            p1lay, temp_air, &
208            flux_u1, flux_v1)
209#else
210       abort_message='Pb de coherence: ok_snow = .true. mais CPP_SISVAT = .false.'
211       CALL abort_physic(modname,abort_message,1)
212#endif
213    ELSE ! ok_snow=FALSE
214
215!****************************************************************************************
216! Soil calculations
217!
218!****************************************************************************************
219    IF (soil_model) THEN
220       CALL soil(dtime, is_lic, knon, snow, tsurf, tsoil, soilcap, soilflux)
221       cal(1:knon) = RCPD / soilcap(1:knon)
222       radsol(1:knon)  = radsol(1:knon) + soilflux(1:knon)
223    ELSE
224       cal = RCPD * calice
225       WHERE (snow > 0.0) cal = RCPD * calsno
226    ENDIF
227
228
229!****************************************************************************************
230! Calulate fluxes
231!
232!****************************************************************************************
233    beta(:) = 1.0
234    dif_grnd(:) = 0.0
235
236! Suppose zero surface speed
237    u0(:)=0.0
238    v0(:)=0.0
239    u1_lay(:) = u1(:) - u0(:)
240    v1_lay(:) = v1(:) - v0(:)
241
242    CALL calcul_fluxs(knon, is_lic, dtime, &
243         tsurf, p1lay, cal, beta, cdragh, cdragh, ps, &
244         precip_rain, precip_snow, snow, qsurf,  &
245         radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, &
246         1.,AcoefH, AcoefQ, BcoefH, BcoefQ, &
247         tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
248
249    CALL calcul_flux_wind(knon, dtime, &
250         u0, v0, u1, v1, gustiness, cdragm, &
251         AcoefU, AcoefV, BcoefU, BcoefV, &
252         p1lay, temp_air, &
253         flux_u1, flux_v1)
254
255!****************************************************************************************
256! Calculate snow height, age, run-off,..
257!   
258!****************************************************************************************
259    CALL fonte_neige( knon, is_lic, knindex, dtime, &
260         tsurf, precip_rain, precip_snow, &
261         snow, qsol, tsurf_new, evap)
262
263
264!****************************************************************************************
265! Calculate albedo
266!
267!****************************************************************************************
268    CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)) 
269    WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
270    zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
271    alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + &
272         0.6 * (1.0-zfra(1:knon))
273!
274!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
275!       alb1(1 : knon)  = 0.6 !IM cf FH/GK
276!       alb1(1 : knon)  = 0.82
277!       alb1(1 : knon)  = 0.77 !211003 Ksta0.77
278!       alb1(1 : knon)  = 0.8 !KstaTER0.8 & LMD_ARMIP5
279!IM: KstaTER0.77 & LMD_ARMIP6   
280
281! Attantion: alb1 and alb2 are the same!
282    alb1(1:knon)  = 0.77
283    alb2(1:knon)  = alb1(1:knon)
284
285
286!****************************************************************************************
287! Rugosity
288!
289!****************************************************************************************
290    z0m=1.e-3
291    z0h = z0m
292    z0m = SQRT(z0m**2+rugoro**2)
293
294    END IF ! ok_snow
295
296
297!****************************************************************************************
298! Send run-off on land-ice to coupler if coupled ocean.
299! run_off_lic has been calculated in fonte_neige or surf_sisvat
300!
301!****************************************************************************************
302    IF (type_ocean=='couple') THEN
303       CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic)
304    ENDIF
305
306 ! transfer runoff rate [kg/m2/s](!) to physiq for output
307    runoff(1:knon)=run_off_lic(1:knon)/dtime
308
309 
310!****************************************************************************************
311       snow_o=0.
312       zfra_o = 0.
313       DO j = 1, knon
314           i = knindex(j)
315           snow_o(i) = snow(j)
316           zfra_o(i) = zfra(j)
317       ENDDO
318
319!****************************************************************************************
320       snow_o=0.
321       zfra_o = 0.
322       DO j = 1, knon
323           i = knindex(j)
324           snow_o(i) = snow(j)
325           zfra_o(i) = zfra(j)
326       ENDDO
327
328
329!albedo SB >>>
330     select case(NSW)
331     case(2)
332       alb_dir(1:knon,1)=alb1(1:knon)
333       alb_dir(1:knon,2)=alb2(1:knon)
334     case(4)
335       alb_dir(1:knon,1)=alb1(1:knon)
336       alb_dir(1:knon,2)=alb2(1:knon)
337       alb_dir(1:knon,3)=alb2(1:knon)
338       alb_dir(1:knon,4)=alb2(1:knon)
339     case(6)
340       alb_dir(1:knon,1)=alb1(1:knon)
341       alb_dir(1:knon,2)=alb1(1:knon)
342       alb_dir(1:knon,3)=alb1(1:knon)
343       alb_dir(1:knon,4)=alb2(1:knon)
344       alb_dir(1:knon,5)=alb2(1:knon)
345       alb_dir(1:knon,6)=alb2(1:knon)
346     end select
347alb_dif=alb_dir
348!albedo SB <<<
349
350
351
352
353  END SUBROUTINE surf_landice
354!
355!****************************************************************************************
356!
357END MODULE surf_landice_mod
358
359
360
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