source: LMDZ6/branches/Amaury_dev/libf/phylmd/fonte_neige_mod.F90

Last change on this file was 5231, checked in by abarral, 7 weeks ago

Merge r5217

  • 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
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File size: 24.0 KB
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1
2! $Header$
3
4MODULE fonte_neige_mod
5
6! This module will treat the process of snow, melting, accumulating, calving, in
7! case of simplified soil model.
8
9!****************************************************************************************
10  USE dimphy, ONLY: klon
11  USE indice_sol_mod
12
13
14  IMPLICIT NONE
15  SAVE
16
17! run_off_ter and run_off_lic are the runoff at the compressed grid knon for
18! land and land-ice respectively
19! Note: run_off_lic is used in mod_landice and therfore not PRIVATE
20  REAL, ALLOCATABLE, DIMENSION(:), PRIVATE    :: run_off_ter
21  !$OMP THREADPRIVATE(run_off_ter)
22  REAL, ALLOCATABLE, DIMENSION(:)             :: run_off_lic
23  !$OMP THREADPRIVATE(run_off_lic)
24
25! run_off_lic_0 is the runoff at land-ice a time-step earlier, on the global 1D array grid
26  REAL, ALLOCATABLE, DIMENSION(:), PRIVATE    :: run_off_lic_0
27  !$OMP THREADPRIVATE(run_off_lic_0)
28 
29  REAL, PRIVATE                               :: tau_calv 
30  !$OMP THREADPRIVATE(tau_calv)
31  REAL, ALLOCATABLE, DIMENSION(:,:)           :: ffonte_global
32  !$OMP THREADPRIVATE(ffonte_global)
33  REAL, ALLOCATABLE, DIMENSION(:,:)           :: fqfonte_global
34  !$OMP THREADPRIVATE(fqfonte_global)
35  REAL, ALLOCATABLE, DIMENSION(:,:)           :: fqcalving_global
36  !$OMP THREADPRIVATE(fqcalving_global)
37  REAL, ALLOCATABLE, DIMENSION(:)             :: runofflic_global
38  !$OMP THREADPRIVATE(runofflic_global)
39#ifdef ISO
40  REAL, ALLOCATABLE, DIMENSION(:,:), PRIVATE  :: xtrun_off_ter
41  !$OMP THREADPRIVATE(xtrun_off_ter)
42  REAL, ALLOCATABLE, DIMENSION(:,:)           :: xtrun_off_lic
43  !$OMP THREADPRIVATE(xtrun_off_lic)
44  REAL, ALLOCATABLE, DIMENSION(:,:), PRIVATE  :: xtrun_off_lic_0
45  !$OMP THREADPRIVATE(xtrun_off_lic_0)
46  REAL, ALLOCATABLE, DIMENSION(:,:,:), PRIVATE:: fxtfonte_global
47  !$OMP THREADPRIVATE(fxtfonte_global)
48  REAL, ALLOCATABLE, DIMENSION(:,:,:), PRIVATE:: fxtcalving_global
49  !$OMP THREADPRIVATE(fxtcalving_global)
50  REAL, ALLOCATABLE, DIMENSION(:,:), PRIVATE  :: xtrunofflic_global
51  !$OMP THREADPRIVATE(xtrunofflic_global)
52#endif
53
54CONTAINS
55
56!****************************************************************************************
57
58  SUBROUTINE fonte_neige_init(restart_runoff)
59
60! This SUBROUTINE allocates and initialize variables in the module.
61! The variable run_off_lic_0 is initialized to the field read from
62! restart file. The other variables are initialized to zero.
63
64!****************************************************************************************
65    USE lmdz_abort_physic, ONLY: abort_physic
66! Input argument
67    REAL, DIMENSION(klon), INTENT(IN) :: restart_runoff
68
69! Local variables
70    INTEGER                           :: error
71    CHARACTER (len = 80)              :: abort_message
72    CHARACTER (len = 20)              :: modname = 'fonte_neige_init'
73
74
75!****************************************************************************************
76! Allocate run-off at landice and initilize with field read from restart
77
78!****************************************************************************************
79
80    ALLOCATE(run_off_lic_0(klon), stat = error)
81    IF (error /= 0) THEN
82       abort_message='Pb allocation run_off_lic'
83       CALL abort_physic(modname,abort_message,1)
84    ENDIF
85    run_off_lic_0(:) = restart_runoff(:)
86
87!****************************************************************************************
88! Allocate other variables and initilize to zero
89
90!****************************************************************************************
91    ALLOCATE(run_off_ter(klon), stat = error)
92    IF (error /= 0) THEN
93       abort_message='Pb allocation run_off_ter'
94       CALL abort_physic(modname,abort_message,1)
95    ENDIF
96    run_off_ter(:) = 0.
97   
98    ALLOCATE(run_off_lic(klon), stat = error)
99    IF (error /= 0) THEN
100       abort_message='Pb allocation run_off_lic'
101       CALL abort_physic(modname,abort_message,1)
102    ENDIF
103    run_off_lic(:) = 0.
104   
105    ALLOCATE(ffonte_global(klon,nbsrf))
106    IF (error /= 0) THEN
107       abort_message='Pb allocation ffonte_global'
108       CALL abort_physic(modname,abort_message,1)
109    ENDIF
110    ffonte_global(:,:) = 0.0
111
112    ALLOCATE(fqfonte_global(klon,nbsrf))
113    IF (error /= 0) THEN
114       abort_message='Pb allocation fqfonte_global'
115       CALL abort_physic(modname,abort_message,1)
116    ENDIF
117    fqfonte_global(:,:) = 0.0
118
119    ALLOCATE(fqcalving_global(klon,nbsrf))
120    IF (error /= 0) THEN
121       abort_message='Pb allocation fqcalving_global'
122       CALL abort_physic(modname,abort_message,1)
123    ENDIF
124    fqcalving_global(:,:) = 0.0
125
126    ALLOCATE(runofflic_global(klon))
127    IF (error /= 0) THEN
128       abort_message='Pb allocation runofflic_global'
129       CALL abort_physic(modname,abort_message,1)
130    ENDIF
131    runofflic_global(:) = 0.0
132
133!****************************************************************************************
134! Read tau_calv
135
136!****************************************************************************************
137    CALL conf_interface(tau_calv)
138
139
140  END SUBROUTINE fonte_neige_init
141
142#ifdef ISO
143  SUBROUTINE fonte_neige_init_iso(xtrestart_runoff)
144
145! This SUBROUTINE allocates and initialize variables in the module.
146! The variable run_off_lic_0 is initialized to the field read from
147! restart file. The other variables are initialized to zero.
148
149    USE infotrac_phy, ONLY: niso
150    USE lmdz_abort_physic, ONLY: abort_physic
151#ifdef ISOVERIF
152    USE isotopes_mod, ONLY: iso_eau,iso_HDO
153    USE isotopes_verif_mod
154#endif
155
156!****************************************************************************************
157! Input argument
158    REAL, DIMENSION(niso,klon), INTENT(IN) :: xtrestart_runoff
159
160! Local variables
161    INTEGER                           :: error
162    CHARACTER (len = 80)              :: abort_message
163    CHARACTER (len = 20)              :: modname = 'fonte_neige_init'
164    INTEGER                           :: i
165
166
167!****************************************************************************************
168! Allocate run-off at landice and initilize with field read from restart
169
170!****************************************************************************************
171
172    ALLOCATE(xtrun_off_lic_0(niso,klon), stat = error)
173    IF (error /= 0) THEN
174       abort_message='Pb allocation run_off_lic'
175       CALL abort_physic(modname,abort_message,1)
176    ENDIF   
177   
178    xtrun_off_lic_0(:,:) = xtrestart_runoff(:,:)       
179
180#ifdef ISOVERIF
181      IF (iso_eau > 0) THEN   
182        CALL iso_verif_egalite_vect1D( &
183             xtrun_off_lic_0,run_off_lic_0,'fonte_neige 100', &
184             niso,klon)
185      ENDIF !IF (iso_eau > 0) THEN
186#endif       
187
188!****************************************************************************************
189! Allocate other variables and initilize to zero
190
191!****************************************************************************************
192
193    ALLOCATE(xtrun_off_ter(niso,klon), stat = error)
194    IF (error /= 0) THEN
195       abort_message='Pb allocation xtrun_off_ter'
196       CALL abort_physic(modname,abort_message,1)
197    ENDIF
198    xtrun_off_ter(:,:) = 0.
199   
200    ALLOCATE(xtrun_off_lic(niso,klon), stat = error)
201    IF (error /= 0) THEN
202       abort_message='Pb allocation xtrun_off_lic'
203       CALL abort_physic(modname,abort_message,1)
204    ENDIF
205    xtrun_off_lic(:,:) = 0.
206
207    ALLOCATE(fxtfonte_global(niso,klon,nbsrf))
208    IF (error /= 0) THEN
209       abort_message='Pb allocation fxtfonte_global'
210       CALL abort_physic(modname,abort_message,1)
211    ENDIF
212    fxtfonte_global(:,:,:) = 0.0
213
214    ALLOCATE(fxtcalving_global(niso,klon,nbsrf))
215    IF (error /= 0) THEN
216       abort_message='Pb allocation fxtcalving_global'
217       CALL abort_physic(modname,abort_message,1)
218    ENDIF
219    fxtcalving_global(:,:,:) = 0.0
220
221    ALLOCATE(xtrunofflic_global(niso,klon))
222    IF (error /= 0) THEN
223       abort_message='Pb allocation xtrunofflic_global'
224       CALL abort_physic(modname,abort_message,1)
225    ENDIF
226    xtrunofflic_global(:,:) = 0.0
227
228  END SUBROUTINE fonte_neige_init_iso
229#endif
230
231!****************************************************************************************
232
233  SUBROUTINE fonte_neige( knon, nisurf, knindex, dtime, &
234       tsurf, precip_rain, precip_snow, &
235       snow, qsol, tsurf_new, evap &
236#ifdef ISO   
237   ,fq_fonte_diag,fqfonte_diag,snow_evap_diag,fqcalving_diag   &
238   ,max_eau_sol_diag,runoff_diag,run_off_lic_diag,coeff_rel_diag   &
239#endif
240     )
241
242    USE indice_sol_mod
243  USE lmdz_clesphys
244  USE lmdz_yoethf
245#ifdef ISO
246    USE infotrac_phy, ONLY: niso
247    !use isotopes_mod, ONLY: ridicule_snow,iso_eau,iso_HDO
248#ifdef ISOVERIF
249    USE isotopes_verif_mod
250#endif
251#endif
252
253  USE lmdz_yomcst
254
255  IMPLICIT NONE
256 INCLUDE "FCTTRE.h"
257       
258! Routine de traitement de la fonte de la neige dans le cas du traitement
259! de sol simplifie!
260! LF 03/2001
261! input:
262!   knon         nombre de points a traiter
263!   nisurf       surface a traiter
264!   knindex      index des mailles valables pour surface a traiter
265!   dtime       
266!   tsurf        temperature de surface
267!   precip_rain  precipitations liquides
268!   precip_snow  precipitations solides
269
270! input/output:
271!   snow         champs hauteur de neige
272!   qsol         hauteur d'eau contenu dans le sol
273!   tsurf_new    temperature au sol
274!   evap
275
276! Input variables
277!****************************************************************************************
278    INTEGER, INTENT(IN)                  :: knon
279    INTEGER, INTENT(IN)                  :: nisurf
280    INTEGER, DIMENSION(klon), INTENT(IN) :: knindex
281    REAL   , INTENT(IN)                  :: dtime
282    REAL, DIMENSION(klon), INTENT(IN)    :: tsurf
283    REAL, DIMENSION(klon), INTENT(IN)    :: precip_rain
284    REAL, DIMENSION(klon), INTENT(IN)    :: precip_snow
285
286    ! Input/Output variables
287!****************************************************************************************
288
289    REAL, DIMENSION(klon), INTENT(INOUT) :: snow
290    REAL, DIMENSION(klon), INTENT(INOUT) :: qsol
291    REAL, DIMENSION(klon), INTENT(INOUT) :: tsurf_new
292    REAL, DIMENSION(klon), INTENT(INOUT) :: evap
293
294#ifdef ISO   
295        ! sortie de quelques diagnostiques
296    REAL, DIMENSION(klon), INTENT(OUT) :: fq_fonte_diag
297    REAL, DIMENSION(klon), INTENT(OUT) :: fqfonte_diag
298    REAL, DIMENSION(klon), INTENT(OUT) ::  snow_evap_diag
299    REAL, DIMENSION(klon), INTENT(OUT) ::  fqcalving_diag 
300    REAL,                  INTENT(OUT) :: max_eau_sol_diag 
301    REAL, DIMENSION(klon), INTENT(OUT) ::  runoff_diag   
302    REAL, DIMENSION(klon), INTENT(OUT) :: run_off_lic_diag 
303    REAL,                  INTENT(OUT) :: coeff_rel_diag
304#endif
305
306! Local variables
307!****************************************************************************************
308
309    INTEGER               :: i, j
310    REAL                  :: fq_fonte
311    REAL                  :: coeff_rel
312    REAL, PARAMETER       :: snow_max=3000.
313    REAL, PARAMETER       :: max_eau_sol = 150.0
314!! PB temporaire en attendant mieux pour le modele de neige
315! REAL, parameter :: chasno = RLMLT/(2.3867E+06*0.15)
316    REAL, PARAMETER       :: chasno = 3.334E+05/(2.3867E+06*0.15)
317!IM cf JLD/ GKtest
318    REAL, PARAMETER       :: chaice = 3.334E+05/(2.3867E+06*0.15)
319! fin GKtest
320    REAL, DIMENSION(klon) :: ffonte
321    REAL, DIMENSION(klon) :: fqcalving, fqfonte
322    REAL, DIMENSION(klon) :: d_ts
323    REAL, DIMENSION(klon) :: bil_eau_s, snow_evap
324
325    LOGICAL               :: neige_fond
326
327#ifdef ISO
328        max_eau_sol_diag=max_eau_sol
329#endif
330
331
332!****************************************************************************************
333! Start calculation
334! - Initialization
335
336!****************************************************************************************
337    coeff_rel = dtime/(tau_calv * rday)
338   
339    bil_eau_s(:) = 0.
340
341!****************************************************************************************
342! - Increment snow due to precipitation and evaporation
343! - Calculate the water balance due to precipitation and evaporation (bil_eau_s)
344
345!****************************************************************************************
346    WHERE (precip_snow > 0.)
347       snow = snow + (precip_snow * dtime)
348    END WHERE
349
350    snow_evap = 0.
351 
352    IF (.NOT. ok_lic_cond) THEN
353!---only positive evaporation has an impact on snow
354!---note that this could create a bit of water
355!---this was the default until CMIP6
356      WHERE (evap > 0. )
357         snow_evap = MIN (snow / dtime, evap)    !---one cannot evaporate more than the amount of snow
358         snow = snow - snow_evap * dtime         !---snow that remains on the ground
359         snow = MAX(0.0, snow)                   !---just in case
360      END WHERE
361    ELSE
362!--now considers both positive and negative evaporation in the budget of snow
363      snow_evap = MIN (snow / dtime, evap)    !---one cannot evaporate more than the amount of snow
364      snow = snow - snow_evap * dtime         !---snow that remains or deposits on the ground
365      snow = MAX(0.0, snow)                   !---just in case
366   ENDIF
367   
368    bil_eau_s(:) = (precip_rain(:) * dtime) - (evap(:) - snow_evap(:)) * dtime
369#ifdef ISO
370    snow_evap_diag(:) = snow_evap(:)
371    coeff_rel_diag    = coeff_rel
372#endif
373
374
375
376!****************************************************************************************
377! - Calculate melting snow
378! - Calculate calving and decrement snow, if there are to much snow
379! - Update temperature at surface
380
381!****************************************************************************************
382
383    ffonte(:) = 0.0
384    fqcalving(:) = 0.0
385    fqfonte(:) = 0.0
386
387    DO i = 1, knon
388       ! Y'a-t-il fonte de neige?
389       neige_fond = (snow(i)>epsfra .OR. nisurf==is_sic .OR. nisurf==is_lic) .AND. tsurf_new(i)>=RTT
390       IF (neige_fond) THEN
391          fq_fonte     = MIN( MAX((tsurf_new(i)-RTT )/chasno,0.0),snow(i))
392          ffonte(i)    = fq_fonte * RLMLT/dtime
393          fqfonte(i)   = fq_fonte/dtime
394          snow(i)      = MAX(0., snow(i) - fq_fonte)
395          bil_eau_s(i) = bil_eau_s(i) + fq_fonte
396          tsurf_new(i) = tsurf_new(i) - fq_fonte * chasno 
397#ifdef ISO
398          fq_fonte_diag(i) = fq_fonte
399#endif
400
401
402!IM cf JLD OK     
403!IM cf JLD/ GKtest fonte aussi pour la glace
404          IF (nisurf == is_sic .OR. nisurf == is_lic ) THEN
405             fq_fonte = MAX((tsurf_new(i)-RTT )/chaice,0.0)
406             ffonte(i) = ffonte(i) + fq_fonte * RLMLT/dtime
407             IF ( ok_lic_melt ) THEN
408                fqfonte(i) = fqfonte(i) + fq_fonte/dtime
409                bil_eau_s(i) = bil_eau_s(i) + fq_fonte
410             ENDIF
411             tsurf_new(i) = RTT
412          ENDIF
413          d_ts(i) = tsurf_new(i) - tsurf(i)
414       ENDIF
415
416       ! s'il y a une hauteur trop importante de neige, elle est ecretee
417       fqcalving(i) = MAX(0., snow(i) - snow_max)/dtime
418       snow(i)=MIN(snow(i),snow_max)
419    ENDDO
420#ifdef ISO
421    DO i = 1, knon
422       fqcalving_diag(i) = fqcalving(i)
423       fqfonte_diag(i)   = fqfonte(i)
424    ENDDO !DO i = 1, knon
425#endif
426
427
428    IF (nisurf == is_ter) THEN
429       DO i = 1, knon
430          qsol(i) = qsol(i) + bil_eau_s(i)
431          run_off_ter(i) = run_off_ter(i) + MAX(qsol(i) - max_eau_sol, 0.0)
432#ifdef ISO
433          runoff_diag(i) = MAX(qsol(i) - max_eau_sol, 0.0)
434#endif
435          qsol(i) = MIN(qsol(i), max_eau_sol)
436       ENDDO
437    ELSE IF (nisurf == is_lic) THEN
438       DO i = 1, knon
439          j = knindex(i)
440          !--temporal filtering
441          run_off_lic(i)   = coeff_rel*fqcalving(i) + (1.-coeff_rel)*run_off_lic_0(j)
442          run_off_lic_0(j) = run_off_lic(i)
443          !--add melting snow and liquid precip to runoff of ice cap
444          run_off_lic(i)   = run_off_lic(i) + fqfonte(i) + precip_rain(i)
445       ENDDO
446    ENDIF
447
448#ifdef ISO
449    DO i = 1, klon   
450      run_off_lic_diag(i) = run_off_lic(i)
451    ENDDO ! DO i = 1, knon   
452#endif
453   
454!****************************************************************************************
455! Save ffonte, fqfonte and fqcalving in global arrays for each
456! sub-surface separately
457
458!****************************************************************************************
459    DO i = 1, knon
460       ffonte_global(knindex(i),nisurf)    = ffonte(i)
461       fqfonte_global(knindex(i),nisurf)   = fqfonte(i)
462       fqcalving_global(knindex(i),nisurf) = fqcalving(i)
463    ENDDO
464
465    IF (nisurf == is_lic) THEN
466    DO i = 1, knon
467       runofflic_global(knindex(i)) = run_off_lic(i)
468    ENDDO
469    ENDIF
470
471  END SUBROUTINE fonte_neige
472
473!****************************************************************************************
474
475  SUBROUTINE fonte_neige_final(restart_runoff &
476#ifdef ISO     
477                          ,xtrestart_runoff &
478#endif   
479                          )
480
481! This SUBROUTINE returns run_off_lic_0 for later writing to restart file.
482
483#ifdef ISO
484    USE infotrac_phy, ONLY: niso
485#ifdef ISOVERIF
486    USE isotopes_mod, ONLY: iso_eau
487    USE isotopes_verif_mod
488#endif
489#endif
490
491!****************************************************************************************
492    REAL, DIMENSION(klon), INTENT(OUT) :: restart_runoff
493#ifdef ISO     
494    REAL, DIMENSION(niso,klon), INTENT(OUT) :: xtrestart_runoff
495#ifdef ISOVERIF
496    INTEGER :: i
497#endif 
498#endif
499
500
501
502!****************************************************************************************
503! Set the output variables
504    restart_runoff(:) = run_off_lic_0(:)
505#ifdef ISO
506    xtrestart_runoff(:,:) = xtrun_off_lic_0(:,:)
507#ifdef ISOVERIF
508    IF (iso_eau > 0) THEN   
509      DO i=1,klon
510        IF (iso_verif_egalite_nostop(run_off_lic_0(i) &
511                                ,xtrun_off_lic_0(iso_eau,i) &
512                                ,'fonte_neige 413') &
513        == 1) THEN
514          WRITE(*,*) 'i=',i
515          STOP
516        ENDIF
517      ENDDO !DO i=1,klon
518    ENDIF !IF (iso_eau > 0) THEN
519#endif   
520#endif
521
522
523
524! Deallocation of all varaibles in the module
525!   DEALLOCATE(run_off_lic_0, run_off_ter, run_off_lic, ffonte_global, &
526!        fqfonte_global, fqcalving_global)
527
528    IF (ALLOCATED(run_off_lic_0)) DEALLOCATE(run_off_lic_0)
529    IF (ALLOCATED(run_off_ter)) DEALLOCATE(run_off_ter)
530    IF (ALLOCATED(run_off_lic)) DEALLOCATE(run_off_lic)
531    IF (ALLOCATED(ffonte_global)) DEALLOCATE(ffonte_global)
532    IF (ALLOCATED(fqfonte_global)) DEALLOCATE(fqfonte_global)
533    IF (ALLOCATED(fqcalving_global)) DEALLOCATE(fqcalving_global)
534    IF (ALLOCATED(runofflic_global)) DEALLOCATE(runofflic_global)
535#ifdef ISO
536    IF (ALLOCATED(xtrun_off_lic_0)) DEALLOCATE(xtrun_off_lic_0)
537    IF (ALLOCATED(xtrun_off_ter)) DEALLOCATE(xtrun_off_ter)
538    IF (ALLOCATED(xtrun_off_lic)) DEALLOCATE(xtrun_off_lic)
539    IF (ALLOCATED(fxtfonte_global)) DEALLOCATE(fxtfonte_global)
540    IF (ALLOCATED(fxtcalving_global)) DEALLOCATE(fxtcalving_global)
541    IF (ALLOCATED(xtrunofflic_global)) DEALLOCATE(xtrunofflic_global)
542#endif
543
544
545  END SUBROUTINE fonte_neige_final
546
547!****************************************************************************************
548
549  SUBROUTINE fonte_neige_get_vars(pctsrf, fqcalving_out, &
550              fqfonte_out, ffonte_out, run_off_lic_out &
551#ifdef ISO     
552         ,fxtcalving_out, fxtfonte_out,xtrun_off_lic_out &
553#endif     
554         )
555
556
557! Cumulate ffonte, fqfonte and fqcalving respectively for
558! all type of surfaces according to their fraction.
559
560! This routine is called from physiq.F before histwrite.
561!****************************************************************************************
562
563    USE indice_sol_mod
564#ifdef ISO
565    USE infotrac_phy, ONLY: niso
566#endif
567
568    REAL, DIMENSION(klon,nbsrf), INTENT(IN) :: pctsrf
569
570    REAL, DIMENSION(klon), INTENT(OUT)      :: fqcalving_out
571    REAL, DIMENSION(klon), INTENT(OUT)      :: fqfonte_out
572    REAL, DIMENSION(klon), INTENT(OUT)      :: ffonte_out
573    REAL, DIMENSION(klon), INTENT(OUT)      :: run_off_lic_out
574
575#ifdef ISO
576    REAL, DIMENSION(niso,klon), INTENT(OUT) :: fxtcalving_out
577    REAL, DIMENSION(niso,klon), INTENT(OUT) :: fxtfonte_out
578    REAL, DIMENSION(niso,klon), INTENT(OUT) :: xtrun_off_lic_out
579    INTEGER   :: i,ixt
580#endif
581 
582    INTEGER   :: nisurf
583!****************************************************************************************
584
585    ffonte_out(:)    = 0.0
586    fqfonte_out(:)   = 0.0
587    fqcalving_out(:) = 0.0
588#ifdef ISO       
589    fxtfonte_out(:,:)   = 0.0
590    fxtcalving_out(:,:) = 0.0
591#endif
592
593    DO nisurf = 1, nbsrf
594       ffonte_out(:) = ffonte_out(:) + ffonte_global(:,nisurf)*pctsrf(:,nisurf)
595       fqfonte_out(:) = fqfonte_out(:) + fqfonte_global(:,nisurf)*pctsrf(:,nisurf)
596       fqcalving_out(:) = fqcalving_out(:) + fqcalving_global(:,nisurf)*pctsrf(:,nisurf)
597    ENDDO
598
599    run_off_lic_out(:)=runofflic_global(:)
600
601#ifdef ISO
602    DO nisurf = 1, nbsrf
603      DO i=1,klon
604        DO ixt=1,niso
605          fxtfonte_out(ixt,i) = fxtfonte_out(ixt,i) + fxtfonte_global(ixt,i,nisurf)*pctsrf(i,nisurf)
606          fxtcalving_out(ixt,i) = fxtcalving_out(ixt,i) + fxtcalving_global(ixt,i,nisurf)*pctsrf(i,nisurf)
607        ENDDO !DO ixt=1,niso
608      ENDDO !DO i=1,klon
609    ENDDO !DO nisurf = 1, nbsrf
610    xtrun_off_lic_out(:,:) = xtrunofflic_global(:,:)
611#endif
612
613  END SUBROUTINE fonte_neige_get_vars
614
615!****************************************************************************************
616
617!#ifdef ISO
618!  SUBROUTINE fonte_neige_export_xtrun_off_lic_0(knon,xtrun_off_lic_0_diag)
619!    use infotrac_phy, ONLY: niso
620
621!    ! inputs
622!    INTEGER, INTENT(IN)                      :: knon
623!    REAL, INTENT(IN), DIMENSION(niso,klon)   :: xtrun_off_lic_0_diag
624
625!    xtrun_off_lic_0(:,:)=xtrun_off_lic_0_diag(:,:)
626
627!  END SUBROUTINE  fonte_neige_export_xtrun_off_lic_0
628!#endif
629
630#ifdef ISO
631  SUBROUTINE gestion_neige_besoin_varglob_fonte_neige(klon,knon, &
632             xtprecip_snow,xtprecip_rain, &
633             fxtfonte_neige,fxtcalving, &
634             knindex,nisurf,run_off_lic_diag,coeff_rel_diag)
635
636        ! dans cette routine, on a besoin des variables globales de
637        ! fonte_neige_mod. Il faut donc la mettre dans fonte_neige_mod
638        ! le reste de gestion_neige est dans isotopes_routines_mod car sinon pb
639        ! de dépendance circulaire.
640
641    USE infotrac_phy, ONLY: ntiso,niso
642    USE isotopes_mod, ONLY: iso_eau   
643    USE indice_sol_mod   
644#ifdef ISOVERIF
645    USE isotopes_verif_mod
646#endif
647    IMPLICIT NONE
648
649    ! inputs
650    INTEGER, INTENT(IN)                     :: klon,knon
651    REAL, DIMENSION(ntiso,klon), INTENT(IN) :: xtprecip_snow, xtprecip_rain
652    REAL, DIMENSION(niso,klon), INTENT(IN)  :: fxtfonte_neige,fxtcalving
653    INTEGER, INTENT(IN)                     :: nisurf
654    INTEGER, DIMENSION(klon), INTENT(IN)    :: knindex
655    REAL, DIMENSION(klon), INTENT(IN)       :: run_off_lic_diag 
656    REAL, INTENT(IN)                        :: coeff_rel_diag 
657
658    ! locals
659    INTEGER :: i,ixt,j
660       
661#ifdef ISOVERIF
662    IF (nisurf == is_lic) THEN
663      IF (iso_eau > 0) THEN 
664        DO i = 1, knon
665           j = knindex(i)
666           CALL iso_verif_egalite(xtrun_off_lic_0(iso_eau,j), &
667               run_off_lic_0(j),'gestion_neige_besoin_varglob_fonte_neige 625')
668        ENDDO
669      ENDIF
670    ENDIF
671#endif
672
673! calcul de run_off_lic
674
675    IF (nisurf == is_lic) THEN
676!         coeff_rel = dtime/(tau_calv * rday)
677
678      DO i = 1, knon
679        j = knindex(i)
680        DO ixt = 1, niso
681          xtrun_off_lic(ixt,i)   = (coeff_rel_diag *  fxtcalving(ixt,i)) &
682                              +(1. - coeff_rel_diag) * xtrun_off_lic_0(ixt,j)
683          xtrun_off_lic_0(ixt,j) = xtrun_off_lic(ixt,i)
684          xtrun_off_lic(ixt,i)   = xtrun_off_lic(ixt,i) + fxtfonte_neige(ixt,i) + xtprecip_rain(ixt,i)
685        ENDDO !DO ixt=1,niso
686#ifdef ISOVERIF
687          IF (iso_eau > 0) THEN             
688            IF (iso_verif_egalite_choix_nostop(xtrun_off_lic(iso_eau,i), &
689                    run_off_lic_diag(i),'gestion_neige_besoin_varglob_fonte_neige 1201a', &
690                    errmax,errmaxrel) == 1) THEN
691               WRITE(*,*) 'i,j=',i,j   
692               WRITE(*,*) 'coeff_rel_diag=',coeff_rel_diag
693               STOP
694            ENDIF
695          ENDIF
696#endif
697      ENDDO
698    ENDIF !IF (nisurf == is_lic) THEN 
699
700! Save ffonte, fqfonte and fqcalving in global arrays for each
701! sub-surface separately
702    DO i = 1, knon
703      DO ixt = 1, niso
704        fxtfonte_global(ixt,knindex(i),nisurf)   = fxtfonte_neige(ixt,i)
705        fxtcalving_global(ixt,knindex(i),nisurf) = fxtcalving(ixt,i)
706      ENDDO !do ixt=1,niso
707    ENDDO   
708
709    IF (nisurf == is_lic) THEN
710      DO i = 1, knon   
711        DO ixt = 1, niso   
712        xtrunofflic_global(ixt,knindex(i)) = xtrun_off_lic(ixt,i)
713        ENDDO ! DO ixt=1,niso   
714      ENDDO
715    ENDIF
716       
717  END SUBROUTINE gestion_neige_besoin_varglob_fonte_neige
718#endif
719
720
721END MODULE fonte_neige_mod
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