source: LMDZ5/trunk/libf/phylmd/surf_landice_mod.F90 @ 2237

Last change on this file since 2237 was 2227, checked in by Laurent Fairhead, 10 years ago

New ocean albedo.

To activate the new scheme, put iflag_albedo=1 in physiq.def

To activate chlorophyll concentration effect on albedo,
put ok_chlorophyll=y in def file

and download file named chlorophyll.nc
chlorophyll.nc has the same dimension as the model grid with 12 months data,
(i=lon, j=lat, L=1:12) and can be degraded from the original file of dimension
i=1:4320 , j=1:2160 , L=1:12
ada:/workgpfs/rech/psl/rpsl949/clima/chlor_seasonal_clim_seawifs.nc

For 96X96 resolution, chlorophyll.nc file is in
ada:/workgpfs/rech/psl/rpsl949/clima/chlorophyll.nc

  1. Baek
  • 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: 13.9 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, rugoro, pctsrf, &
18       snow, qsurf, qsol, agesno, &
19!albedo SB >>>
20!      tsoil, z0_new, alb1, alb2, evap, fluxsens, fluxlat, &
21       tsoil, z0_new, SFRWL, alb_dir, alb_dif, evap, fluxsens, fluxlat, &
22!albedo SB <<<
23       tsurf_new, dflux_s, dflux_l, &
24       slope, cloudf, &
25       snowhgt, qsnow, to_ice, sissnow, &
26       alb3, runoff, &
27       flux_u1, flux_v1)
28
29    USE dimphy
30    USE surface_data,     ONLY : type_ocean, calice, calsno, ok_snow
31    USE fonte_neige_mod,  ONLY : fonte_neige, run_off_lic
32    USE cpl_mod,          ONLY : cpl_send_landice_fields
33    USE calcul_fluxs_mod
34    USE phys_output_var_mod
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
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)            :: z0_new
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!albedo SB >>>
127    real,dimension(klon) :: alb1,alb2
128!albedo SB <<<
129
130! End definition
131!****************************************************************************************
132!
133! Initialize output variables
134    alb3(:) = 999999.
135    alb2(:) = 999999.
136    alb1(:) = 999999.
137   
138    runoff(:) = 0.
139!****************************************************************************************
140! Calculate total absorbed radiance at surface
141!
142!****************************************************************************************
143    radsol(:) = 0.0
144    radsol(1:knon) = swnet(1:knon) + lwnet(1:knon)
145
146!****************************************************************************************
147!   ok_snow = TRUE  : prepare and call SISVAT snow model
148!   ok_snow = FALSE : soil_model, calcul_flux, fonte_neige, ...
149!
150!****************************************************************************************
151    IF (ok_snow) THEN
152#ifdef CPP_SISVAT
153       ! Prepare for calling SISVAT
154       
155       ! Calculate incoming flux for SW and LW interval: swdown, lwdown
156       swdown(:)        = 0.0
157       lwdown(:)        = 0.0
158       DO i = 1, knon
159          swdown(i)        = swnet(i)/(1-albedo(i))
160          lwdown(i)        = lwdownm(i)
161       END DO
162       
163       ! Set constants and compute some input for SISVAT
164       snow_adv(:)      = 0.                          ! no snow blown in for now
165       snow_cont_air(:) = 0.       
166       alb_soil(:)      = albedo(:)
167       pref             = 100000.                     ! = 1000 hPa
168       DO i = 1, knon
169          wind_velo(i)     = u1(i)**2 + v1(i)**2
170          wind_velo(i)     = wind_velo(i)**0.5
171          pexner(i)        = (p1lay(i)/pref)**(RD/RCPD)
172          dens_air(i)      = p1lay(i)/RD/temp_air(i)  ! dry air density
173          bl_height(i)     = pphi1(i)/RG             
174       END DO
175
176!****************************************************************************************
177! CALL to SISVAT interface
178!
179!****************************************************************************************
180       ! config: compute everything with SV but temperatures afterwards with soil/calculfluxs
181       DO i = 1, knon
182          tsoil0(i,:)=tsoil(i,:)
183       END DO
184           ! Martin
185           PRINT*, 'on appelle surf_sisvat'
186           ! Martin
187       CALL surf_sisvat(knon, rlon, rlat, knindex, itime, dtime, debut, lafin, &
188            rmu0, swdown, lwdown, pexner, ps, p1lay, &
189            precip_rain, precip_snow, precip_snow_adv, snow_adv, &
190            bl_height, wind_velo, temp_air, dens_air, spechum, tsurf, &
191            rugoro, snow_cont_air, alb_soil, slope, cloudf, &
192            radsol, qsol, tsoil0, snow, snowhgt, qsnow, to_ice,sissnow, agesno, &
193            AcoefH, AcoefQ, BcoefH, BcoefQ, cdragh, &
194            run_off_lic, evap, fluxsens, fluxlat, dflux_s, dflux_l, &       
195            tsurf_new, alb1, alb2, alb3, &
196            emis_new, z0_new, qsurf)
197       
198       ! Suppose zero surface speed
199       u0(:)            = 0.0
200       v0(:)            = 0.0
201       ! The calculation of heat/water fluxes, otherwise done by "CALL calcul_fluxs" is
202       ! integrated in SISVAT, using the same method. It can be found in "sisvat.f", in the
203       ! subroutine "SISVAT_TS2".
204       ! u0, v0=0., dif_grnd=0. and beta=1 are assumed there!
205       
206       CALL calcul_flux_wind(knon, dtime, &
207            u0, v0, u1, v1, cdragm, &
208            AcoefU, AcoefV, BcoefU, BcoefV, &
209            p1lay, temp_air, &
210            flux_u1, flux_v1)
211#else
212       abort_message='Pb de coherence: ok_snow = .true. mais CPP_SISVAT = .false.'
213       CALL abort_gcm(modname,abort_message,1)
214#endif
215    ELSE ! ok_snow=FALSE
216
217!****************************************************************************************
218! Soil calculations
219!
220!****************************************************************************************
221    IF (soil_model) THEN
222       CALL soil(dtime, is_lic, knon, snow, tsurf, tsoil, soilcap, soilflux)
223       cal(1:knon) = RCPD / soilcap(1:knon)
224       radsol(1:knon)  = radsol(1:knon) + soilflux(1:knon)
225    ELSE
226       cal = RCPD * calice
227       WHERE (snow > 0.0) cal = RCPD * calsno
228    ENDIF
229
230
231!****************************************************************************************
232! Calulate fluxes
233!
234!****************************************************************************************
235    beta(:) = 1.0
236    dif_grnd(:) = 0.0
237
238! Suppose zero surface speed
239    u0(:)=0.0
240    v0(:)=0.0
241    u1_lay(:) = u1(:) - u0(:)
242    v1_lay(:) = v1(:) - v0(:)
243
244    CALL calcul_fluxs(knon, is_lic, dtime, &
245         tsurf, p1lay, cal, beta, cdragh, ps, &
246         precip_rain, precip_snow, snow, qsurf,  &
247         radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, &
248         AcoefH, AcoefQ, BcoefH, BcoefQ, &
249         tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l)
250
251    CALL calcul_flux_wind(knon, dtime, &
252         u0, v0, u1, v1, cdragm, &
253         AcoefU, AcoefV, BcoefU, BcoefV, &
254         p1lay, temp_air, &
255         flux_u1, flux_v1)
256
257!****************************************************************************************
258! Calculate snow height, age, run-off,..
259!   
260!****************************************************************************************
261    CALL fonte_neige( knon, is_lic, knindex, dtime, &
262         tsurf, precip_rain, precip_snow, &
263         snow, qsol, tsurf_new, evap)
264
265
266!****************************************************************************************
267! Calculate albedo
268!
269!****************************************************************************************
270    CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)) 
271    WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0.
272    zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0)))
273    alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + &
274         0.6 * (1.0-zfra(1:knon))
275!
276!IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux"
277!       alb1(1 : knon)  = 0.6 !IM cf FH/GK
278!       alb1(1 : knon)  = 0.82
279!       alb1(1 : knon)  = 0.77 !211003 Ksta0.77
280!       alb1(1 : knon)  = 0.8 !KstaTER0.8 & LMD_ARMIP5
281!IM: KstaTER0.77 & LMD_ARMIP6   
282
283! Attantion: alb1 and alb2 are the same!
284    alb1(1:knon)  = 0.77
285    alb2(1:knon)  = alb1(1:knon)
286
287
288!****************************************************************************************
289! Rugosity
290!
291!****************************************************************************************
292    z0_new(:) = MAX(1.E-3,rugoro(:))
293    END IF ! ok_snow
294
295
296!****************************************************************************************
297! Send run-off on land-ice to coupler if coupled ocean.
298! run_off_lic has been calculated in fonte_neige or surf_sisvat
299!
300!****************************************************************************************
301    IF (type_ocean=='couple') THEN
302       CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic)
303    ENDIF
304
305 ! transfer runoff rate [kg/m2/s](!) to physiq for output
306    runoff(1:knon)=run_off_lic(1:knon)/dtime
307
308 
309!****************************************************************************************
310       snow_o=0.
311       zfra_o = 0.
312       DO j = 1, knon
313           i = knindex(j)
314           snow_o(i) = snow(j)
315           zfra_o(i) = zfra(j)
316       ENDDO
317
318!****************************************************************************************
319       snow_o=0.
320       zfra_o = 0.
321       DO j = 1, knon
322           i = knindex(j)
323           snow_o(i) = snow(j)
324           zfra_o(i) = zfra(j)
325       ENDDO
326
327
328!albedo SB >>>
329     select case(NSW)
330     case(2)
331       alb_dir(1:knon,1)=alb1(1:knon)
332       alb_dir(1:knon,2)=alb2(1:knon)
333     case(4)
334       alb_dir(1:knon,1)=alb1(1:knon)
335       alb_dir(1:knon,2)=alb2(1:knon)
336       alb_dir(1:knon,3)=alb2(1:knon)
337       alb_dir(1:knon,4)=alb2(1:knon)
338     case(6)
339       alb_dir(1:knon,1)=alb1(1:knon)
340       alb_dir(1:knon,2)=alb1(1:knon)
341       alb_dir(1:knon,3)=alb1(1:knon)
342       alb_dir(1:knon,4)=alb2(1:knon)
343       alb_dir(1:knon,5)=alb2(1:knon)
344       alb_dir(1:knon,6)=alb2(1:knon)
345     end select
346alb_dif=alb_dir
347!albedo SB <<<
348
349
350
351
352  END SUBROUTINE surf_landice
353!
354!****************************************************************************************
355!
356END MODULE surf_landice_mod
357
358
359
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