source: LMDZ4/branches/LMDZ4V5.0-dev/libf/phylmd/readaerosol_interp.F90 @ 2661

Last change on this file since 2661 was 1347, checked in by Laurent Fairhead, 15 years ago

Additions to aerosol outputs for CMIP5 exercise
(Needed because of chageset r1346 LF)


Additions aux sorties aérosols pour l'exercice CMIP5
(Nécessaires suite au changeset r1346 LF)

Michael, Anne

File size: 22.0 KB
RevLine 
[1179]1! $Id$
2!
[1347]3SUBROUTINE readaerosol_interp(id_aero, itap, pdtphys, r_day, first, pplay, paprs, t_seri, mass_out, pi_mass_out, load_src)
[1179]4!
5! This routine will return the mass concentration at actual day(mass_out) and
6! the pre-industrial values(pi_mass_out) for aerosol corresponding to "id_aero".
7! The mass concentrations for all aerosols are saved in this routine but each
8! call to this routine only treats the aerosol "id_aero".
9!
10! 1) Read in data for the whole year, only at first time step
11! 2) Interpolate to the actual day, only at new day
12! 3) Interpolate to the model vertical grid (target grid), only at new day
13! 4) Test for negative mass values
14
[1265]15  USE ioipsl
[1179]16  USE dimphy, ONLY : klev,klon
17  USE mod_phys_lmdz_para, ONLY : mpi_rank 
18  USE readaerosol_mod
[1183]19  USE aero_mod, ONLY : naero_spc, name_aero
[1179]20  USE write_field_phy
[1237]21  USE phys_cal_mod
[1179]22
23  IMPLICIT NONE
24
25  INCLUDE "YOMCST.h"
26  INCLUDE "chem.h"     
27  INCLUDE "temps.h"     
28  INCLUDE "clesphys.h"
29  INCLUDE "iniprint.h"
30  INCLUDE "dimensions.h"
31  INCLUDE "comvert.h"
32!
33! Input:
34!****************************************************************************************
35  INTEGER, INTENT(IN)                    :: id_aero! Identity number for the aerosol to treat
[1237]36  INTEGER, INTENT(IN)                    :: itap   ! Physic step count
37  REAL, INTENT(IN)                       :: pdtphys! Physic day step
[1179]38  REAL, INTENT(IN)                       :: r_day  ! Day of integration
39  LOGICAL, INTENT(IN)                    :: first  ! First model timestep
40  REAL, DIMENSION(klon,klev), INTENT(IN) :: pplay  ! pression at model mid-layers
41  REAL, DIMENSION(klon,klev+1),INTENT(IN):: paprs  ! pression between model layers
[1216]42  REAL, DIMENSION(klon,klev), INTENT(IN) :: t_seri ! air temperature
[1179]43!     
44! Output:     
45!****************************************************************************************
46  REAL, INTENT(OUT) :: mass_out(klon,klev)    ! Mass of aerosol (monthly mean data,from file) [ug AIBCM/m3]
47  REAL, INTENT(OUT) :: pi_mass_out(klon,klev) ! Mass of preindustrial aerosol (monthly mean data,from file) [ug AIBCM/m3]
[1347]48  REAL, INTENT(OUT) :: load_src(klon) ! Load of aerosol (monthly mean data,from file) [kg/m3]
[1179]49!     
50! Local Variables:
51!****************************************************************************************
52  INTEGER                         :: i, k, ierr
[1237]53  INTEGER                         :: iday, iyr, lmt_pas
[1265]54!  INTEGER                         :: im, day1, day2, im2
55  INTEGER                         :: im, im2
56  REAL                            :: day1, day2
[1179]57  INTEGER                         :: pi_klev_src ! Only for testing purpose
58  INTEGER, SAVE                   :: klev_src    ! Number of vertical levles in source field
59!$OMP THREADPRIVATE(klev_src)
60
[1216]61  REAL                              :: zrho      ! Air density [kg/m3]
62  REAL                              :: volm      ! Volyme de melange [kg/kg]
[1179]63  REAL, DIMENSION(klon)             :: psurf_day, pi_psurf_day
[1347]64  REAL, DIMENSION(klon)             :: pi_load_src  ! Mass load at source grid
[1179]65  REAL, DIMENSION(klon)             :: load_tgt, load_tgt_test
66  REAL, DIMENSION(klon,klev)        :: delp ! pressure difference in each model layer
67
68  REAL, ALLOCATABLE, DIMENSION(:,:)            :: pplay_src ! pression mid-layer at source levels
69  REAL, ALLOCATABLE, DIMENSION(:,:)            :: tmp1, tmp2  ! Temporary variables
70  REAL, ALLOCATABLE, DIMENSION(:,:,:,:), SAVE  :: var_year    ! VAR in right dimension for the total year
71  REAL, ALLOCATABLE, DIMENSION(:,:,:,:), SAVE  :: pi_var_year ! pre-industrial VAR, -"-
72!$OMP THREADPRIVATE(var_year,pi_var_year)
73  REAL, ALLOCATABLE, DIMENSION(:,:,:),SAVE     :: var_day     ! VAR interpolated to the actual day and model grid
74  REAL, ALLOCATABLE, DIMENSION(:,:,:),SAVE     :: pi_var_day  ! pre-industrial VAR, -"-
75!$OMP THREADPRIVATE(var_day,pi_var_day)
76  REAL, ALLOCATABLE, DIMENSION(:,:,:), SAVE    :: psurf_year, pi_psurf_year ! surface pressure for the total year
77!$OMP THREADPRIVATE(psurf_year, pi_psurf_year)
78  REAL, ALLOCATABLE, DIMENSION(:,:,:), SAVE    :: load_year, pi_load_year   ! load in the column for the total year
79!$OMP THREADPRIVATE(load_year, pi_load_year)
80
81  REAL, DIMENSION(:,:,:), POINTER   :: pt_tmp      ! Pointer allocated in readaerosol
82  REAL, POINTER, DIMENSION(:), SAVE :: pt_ap, pt_b ! Pointer for describing the vertical levels
83!$OMP THREADPRIVATE(pt_ap, pt_b)
[1265]84  INTEGER, SAVE                     :: nbr_tsteps ! number of time steps in file read
85  REAL, DIMENSION(14), SAVE         :: month_len, month_start, month_mid
[1270]86!$OMP THREADPRIVATE(nbr_tsteps, month_len, month_start, month_mid)
[1265]87  REAL                              :: jDay
[1179]88
89  LOGICAL            :: lnewday      ! Indicates if first time step at a new day
[1237]90  LOGICAL            :: OLDNEWDAY
[1179]91  LOGICAL,SAVE       :: vert_interp  ! Indicates if vertical interpolation will be done
[1181]92  LOGICAL,SAVE       :: debug=.FALSE.! Debugging in this subroutine
[1179]93!$OMP THREADPRIVATE(vert_interp, debug)
94
95
96!****************************************************************************************
97! Initialization
98!
99!****************************************************************************************
100
101! Calculation to find if it is a new day
[1237]102
[1249]103  IF(mpi_rank == 0 .AND. debug )then
[1237]104     PRINT*,'CONTROL PANEL REGARDING TIME STEPING'
105  ENDIF
106
107  ! Use phys_cal_mod
[1273]108  iday= day_cur
109  iyr = year_cur
110  im  = mth_cur
[1237]111
[1273]112!  iday = INT(r_day)
113!  iyr  = iday/360
114!  iday = iday-iyr*360         ! day of the actual year
115!  iyr  = iyr + annee_ref      ! year of the run   
116!  im   = iday/30 +1           ! the actual month
[1265]117  CALL ymds2ju(iyr, im, iday, 0., jDay)
[1273]118!   CALL ymds2ju(iyr, im, iday-(im-1)*30, 0., jDay)
[1179]119
[1273]120
[1237]121  IF(MOD(itap-1,NINT(86400./pdtphys)) == 0)THEN
122     lnewday=.TRUE.
[1249]123  ELSE
124     lnewday=.FALSE.
[1237]125  ENDIF
[1179]126
[1249]127  IF(mpi_rank == 0 .AND. debug)then
[1237]128     ! 0.02 is about 0.5/24, namly less than half an hour
[1299]129     OLDNEWDAY = (r_day-REAL(iday) < 0.02)
[1237]130     ! Once per day, update aerosol fields
131     lmt_pas = NINT(86400./pdtphys)
[1299]132     PRINT*,'r_day-REAL(iday) =',r_day-REAL(iday)
[1237]133     PRINT*,'itap =',itap
134     PRINT*,'pdtphys =',pdtphys
135     PRINT*,'lmt_pas =',lmt_pas
136     PRINT*,'iday =',iday
137     PRINT*,'r_day =',r_day
[1246]138     PRINT*,'day_cur =',day_cur
139     PRINT*,'mth_cur =',mth_cur
140     PRINT*,'year_cur =',year_cur
[1237]141     PRINT*,'NINT(86400./pdtphys) =',NINT(86400./pdtphys)
142     PRINT*,'MOD(0,1) =',MOD(0,1)
143     PRINT*,'lnewday =',lnewday
144     PRINT*,'OLDNEWDAY =',OLDNEWDAY
145  ENDIF
146
[1179]147  IF (.NOT. ALLOCATED(var_day)) THEN
[1181]148     ALLOCATE( var_day(klon, klev, naero_spc), stat=ierr)
[1179]149     IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 1',1)
[1181]150     ALLOCATE( pi_var_day(klon, klev, naero_spc), stat=ierr)
[1179]151     IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 2',1)
152
[1270]153     ALLOCATE( psurf_year(klon, 12, naero_spc), pi_psurf_year(klon, 12, naero_spc), stat=ierr)
154     IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 3',1)
[1179]155
[1270]156     ALLOCATE( load_year(klon, 12, naero_spc), pi_load_year(klon, 12, naero_spc), stat=ierr)
157     IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 4',1)
158
[1179]159     lnewday=.TRUE.
160
161     NULLIFY(pt_ap)
162     NULLIFY(pt_b)
163  END IF
164
165!****************************************************************************************
166! 1) Read in data : corresponding to the actual year and preindustrial data.
167!    Only for the first day of the year.
168!
169!****************************************************************************************
[1246]170  IF ( (first .OR. iday==0) .AND. lnewday ) THEN
[1179]171     NULLIFY(pt_tmp)
172
173     ! Reading values corresponding to the closest year taking into count the choice of aer_type.
174     ! For aer_type=scenario interpolation between 2 data sets is done in readaerosol.
175     CALL readaerosol(name_aero(id_aero), aer_type, iyr, klev_src, pt_ap, pt_b, pt_tmp, &
[1270]176          psurf_year(:,:,id_aero), load_year(:,:,id_aero))
[1179]177     IF (.NOT. ALLOCATED(var_year)) THEN
[1270]178        ALLOCATE(var_year(klon, klev_src, 12, naero_spc), stat=ierr)
179        IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 5',1)
[1179]180     END IF
181     var_year(:,:,:,id_aero) = pt_tmp(:,:,:)
182
183     ! Reading values corresponding to the preindustrial concentrations.
184     CALL readaerosol(name_aero(id_aero), 'preind', iyr, pi_klev_src, pt_ap, pt_b, pt_tmp, &
[1270]185          pi_psurf_year(:,:,id_aero), pi_load_year(:,:,id_aero))
[1179]186
187     ! klev_src must be the same in both files.
188     ! Also supposing pt_ap and pt_b to be the same in the 2 files without testing.
189     IF (pi_klev_src /= klev_src) THEN
190        WRITE(lunout,*) 'Error! All forcing files for the same aerosol must have the same vertical dimension'
191        WRITE(lunout,*) 'Aerosol : ', name_aero(id_aero)
192        CALL abort_gcm('readaerosol_interp','Differnt vertical axes in aerosol forcing files',1)
193     END IF
194
195     IF (.NOT. ALLOCATED(pi_var_year)) THEN
[1270]196        ALLOCATE(pi_var_year(klon, klev_src, 12, naero_spc), stat=ierr)
197        IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 6',1)
[1179]198     END IF
199     pi_var_year(:,:,:,id_aero) = pt_tmp(:,:,:)
200   
201     IF (debug) THEN
[1270]202        CALL writefield_phy('var_year_jan',var_year(:,:,1,id_aero),klev_src)
203        CALL writefield_phy('var_year_dec',var_year(:,:,12,id_aero),klev_src)
[1179]204        CALL writefield_phy('psurf_src',psurf_year(:,:,id_aero),1)
205        CALL writefield_phy('pi_psurf_src',pi_psurf_year(:,:,id_aero),1)
206        CALL writefield_phy('load_year_src',load_year(:,:,id_aero),1)
207        CALL writefield_phy('pi_load_year_src',pi_load_year(:,:,id_aero),1)
208     END IF
209
210     ! Pointer no more useful, deallocate.
211     DEALLOCATE(pt_tmp)
212
213     ! Test if vertical interpolation will be needed.
214     IF (psurf_year(1,1,id_aero)==not_valid .OR. pi_psurf_year(1,1,id_aero)==not_valid ) THEN
215        ! Pressure=not_valid indicates old file format, see module readaerosol
216        vert_interp = .FALSE.
217
218        ! If old file format, both psurf_year and pi_psurf_year must be not_valid
219        IF (  psurf_year(1,1,id_aero) /= pi_psurf_year(1,1,id_aero) ) THEN
220           WRITE(lunout,*) 'Warning! All forcing files for the same aerosol must have the same structure'
221           CALL abort_gcm('readaerosol_interp', 'The aerosol files have not the same format',1)
222        END IF
223       
224        IF (klev /= klev_src) THEN
225           WRITE(lunout,*) 'Old format of aerosol file do not allowed vertical interpolation'
226           CALL abort_gcm('readaerosol_interp', 'Old aerosol file not possible',1)
227        END IF
228
229     ELSE
230        vert_interp = .TRUE.
231     END IF
232
[1265]233!    Calendar initialisation
234!
235     DO i = 2, 13
[1299]236       month_len(i) = REAL(ioget_mon_len(year_cur, i-1))
[1265]237       CALL ymds2ju(year_cur, i-1, 1, 0.0, month_start(i))
238     ENDDO
[1299]239     month_len(1) = REAL(ioget_mon_len(year_cur-1, 12))
[1265]240     CALL ymds2ju(year_cur-1, 12, 1, 0.0, month_start(1))
[1299]241     month_len(14) = REAL(ioget_mon_len(year_cur+1, 1))
[1265]242     CALL ymds2ju(year_cur+1, 1, 1, 0.0, month_start(14))
243     month_mid(:) = month_start (:) + month_len(:)/2.
[1273]244     
245     if (debug) then
246       write(lunout,*)' month_len = ',month_len
247       write(lunout,*)' month_mid = ',month_mid
248     endif
[1265]249
[1246]250  END IF  ! IF ( (first .OR. iday==0) .AND. lnewday ) THEN
[1179]251 
252!****************************************************************************************
253! - 2) Interpolate to the actual day.
254! - 3) Interpolate to the model vertical grid.
255!
256!****************************************************************************************
257
258  IF (lnewday) THEN ! only if new day
259!****************************************************************************************
260! 2) Interpolate to the actual day
261!
262!****************************************************************************************
[1265]263    ! Find which months and days to use for time interpolation
[1270]264     nbr_tsteps = 12
[1265]265     IF (nbr_tsteps == 12) then
266       IF (jDay < month_mid(im+1)) THEN
267          im2=im-1
268          day2 = month_mid(im2+1)
269          day1 = month_mid(im+1)
270          IF (im2 <= 0) THEN
271             ! the month is january, thus the month before december
272             im2=12
273          END IF
274       ELSE
275          ! the second half of the month
276          im2=im+1
277          day2 = month_mid(im+1)
278          day1 = month_mid(im2+1)
279          IF (im2 > 12) THEN
280             ! the month is december, the following thus january
281             im2=1
282          ENDIF
283       END IF
284     ELSE IF (nbr_tsteps == 14) then
285       im = im + 1
286       IF (jDay < month_mid(im)) THEN
287          ! in the first half of the month use month before and actual month
288          im2=im-1
289          day2 = month_mid(im2)
290          day1 = month_mid(im)
291       ELSE
292          ! the second half of the month
293          im2=im+1
294          day2 = month_mid(im)
295          day1 = month_mid(im2)
296       END IF
[1179]297     ELSE
[1265]298       CALL abort_gcm('readaerosol_interp', 'number of months undefined',1)
299     ENDIF
[1273]300     if (debug) then
301       write(lunout,*)' jDay, day1, day2, im, im2 = ', jDay, day1, day2, im, im2
302     endif
[1265]303
304 
[1179]305     ! Time interpolation, still on vertical source grid
306     ALLOCATE(tmp1(klon,klev_src), tmp2(klon,klev_src),stat=ierr)
307     IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 7',1)
308
309     ALLOCATE(pplay_src(klon,klev_src), stat=ierr)
310     IF (ierr /= 0) CALL abort_gcm('readaerosol_interp', 'pb in allocation 8',1)
311     
312
313     DO k=1,klev_src
314        DO i=1,klon
315           tmp1(i,k) = &
[1269]316                var_year(i,k,im2,id_aero) - (jDay-day2)/(day1-day2) * &
[1179]317                (var_year(i,k,im2,id_aero) - var_year(i,k,im,id_aero))
318           
319           tmp2(i,k) = &
[1269]320                pi_var_year(i,k,im2,id_aero) - (jDay-day2)/(day1-day2) * &
[1179]321                (pi_var_year(i,k,im2,id_aero) - pi_var_year(i,k,im,id_aero))
322        END DO
323     END DO
324
325     ! Time interpolation for pressure at surface, still on vertical source grid
326     DO i=1,klon
327        psurf_day(i) = &
[1269]328             psurf_year(i,im2,id_aero) - (jDay-day2)/(day1-day2) * &
[1179]329             (psurf_year(i,im2,id_aero) - psurf_year(i,im,id_aero))
330       
331        pi_psurf_day(i) = &
[1269]332             pi_psurf_year(i,im2,id_aero) - (jDay-day2)/(day1-day2) * &
[1179]333             (pi_psurf_year(i,im2,id_aero) - pi_psurf_year(i,im,id_aero))
334     END DO
335
336     ! Time interpolation for the load, still on vertical source grid
337     DO i=1,klon
338        load_src(i) = &
[1269]339             load_year(i,im2,id_aero) - (jDay-day2)/(day1-day2) * &
[1179]340             (load_year(i,im2,id_aero) - load_year(i,im,id_aero))
341       
342        pi_load_src(i) = &
[1269]343             pi_load_year(i,im2,id_aero) - (jDay-day2)/(day1-day2) * &
[1179]344             (pi_load_year(i,im2,id_aero) - pi_load_year(i,im,id_aero))
345     END DO
346
347!****************************************************************************************
348! 3) Interpolate to the model vertical grid (target grid)
349!
350!****************************************************************************************
351
352     IF (vert_interp) THEN
353
354        ! - Interpolate variable tmp1 (on source grid) to var_day (on target grid)
355        !********************************************************************************
356        ! a) calculate pression at vertical levels for the source grid using the
357        !    hybrid-sigma coordinates ap and b and the surface pressure, variables from file.
358        DO k = 1, klev_src
359           DO i = 1, klon
360              pplay_src(i,k)= pt_ap(k) + pt_b(k)*psurf_day(i)
361           END DO
362        END DO
363       
364        IF (debug) THEN
365           CALL writefield_phy('psurf_day_src',psurf_day(:),1)
366           CALL writefield_phy('pplay_src',pplay_src(:,:),klev_src)
367           CALL writefield_phy('pplay',pplay(:,:),klev)
368           CALL writefield_phy('day_src',tmp1,klev_src)
369           CALL writefield_phy('pi_day_src',tmp2,klev_src)
370        END IF
371
372        ! b) vertical interpolation on pressure leveles
373        CALL pres2lev(tmp1(:,:), var_day(:,:,id_aero), klev_src, klev, pplay_src, pplay, &
374             1, klon, .FALSE.)
375       
376        IF (debug) CALL writefield_phy('day_tgt',var_day(:,:,id_aero),klev)
377       
378        ! c) adjust to conserve total aerosol mass load in the vertical pillar
379        !    Calculate the load in the actual pillar and compare with the load
380        !    read from aerosol file.
381       
382        ! Find the pressure difference in each model layer
383        DO k = 1, klev
384           DO i = 1, klon
385              delp(i,k) = paprs(i,k) - paprs (i,k+1)
386           END DO
387        END DO
388
389        ! Find the mass load in the actual pillar, on target grid
390        load_tgt(:) = 0.
391        DO k= 1, klev
392           DO i = 1, klon
[1216]393              zrho = pplay(i,k)/t_seri(i,k)/RD       ! [kg/m3]
394              volm = var_day(i,k,id_aero)*1.E-9/zrho ! [kg/kg]
395              load_tgt(i) = load_tgt(i) + 1/RG * volm *delp(i,k)
[1179]396           END DO
397        END DO
398       
399        ! Adjust, uniform
400        DO k = 1, klev
401           DO i = 1, klon
402              var_day(i,k,id_aero) = var_day(i,k,id_aero)*load_src(i)/load_tgt(i)
403           END DO
404        END DO
405       
406        IF (debug) THEN
407           load_tgt_test(:) = 0.
408           DO k= 1, klev
409              DO i = 1, klon
[1216]410                 zrho = pplay(i,k)/t_seri(i,k)/RD       ! [kg/m3]
411                 volm = var_day(i,k,id_aero)*1.E-9/zrho ! [kg/kg]
412                 load_tgt_test(i) = load_tgt_test(i) + 1/RG * volm*delp(i,k)
[1179]413              END DO
414           END DO
415           
416           CALL writefield_phy('day_tgt2',var_day(:,:,id_aero),klev)
417           CALL writefield_phy('load_tgt',load_tgt(:),1)
418           CALL writefield_phy('load_tgt_test',load_tgt_test(:),1)
419           CALL writefield_phy('load_src',load_src(:),1)
420        END IF
421
422        ! - Interpolate variable tmp2 (source grid) to pi_var_day (target grid)
423        !********************************************************************************
424        ! a) calculate pression at vertical levels at source grid   
425        DO k = 1, klev_src
426           DO i = 1, klon
427              pplay_src(i,k)= pt_ap(k) + pt_b(k)*pi_psurf_day(i)
428           END DO
429        END DO
430
431        IF (debug) THEN
432           CALL writefield_phy('pi_psurf_day_src',pi_psurf_day(:),1)
433           CALL writefield_phy('pi_pplay_src',pplay_src(:,:),klev_src)
434        END IF
435
436        ! b) vertical interpolation on pressure leveles
437        CALL pres2lev(tmp2(:,:), pi_var_day(:,:,id_aero), klev_src, klev, pplay_src, pplay, &
438             1, klon, .FALSE.)
439
440        IF (debug) CALL writefield_phy('pi_day_tgt',pi_var_day(:,:,id_aero),klev)
441
442        ! c) adjust to conserve total aerosol mass load in the vertical pillar
443        !    Calculate the load in the actual pillar and compare with the load
444        !    read from aerosol file.
445
446        ! Find the load in the actual pillar, on target grid
447        load_tgt(:) = 0.
448        DO k = 1, klev
449           DO i = 1, klon
[1216]450              zrho = pplay(i,k)/t_seri(i,k)/RD          ! [kg/m3]
451              volm = pi_var_day(i,k,id_aero)*1.E-9/zrho ! [kg/kg]
452              load_tgt(i) = load_tgt(i) + 1/RG * volm * delp(i,k)
[1179]453           END DO
454        END DO
455
456        DO k = 1, klev
457           DO i = 1, klon
458              pi_var_day(i,k,id_aero) = pi_var_day(i,k,id_aero)*pi_load_src(i)/load_tgt(i)
459           END DO
460        END DO
461
462        IF (debug) THEN
463           load_tgt_test(:) = 0.
464           DO k = 1, klev
465              DO i = 1, klon
[1216]466                 zrho = pplay(i,k)/t_seri(i,k)/RD          ! [kg/m3]
467                 volm = pi_var_day(i,k,id_aero)*1.E-9/zrho ! [kg/kg]
468                 load_tgt_test(i) = load_tgt_test(i) + 1/RG * volm * delp(i,k)
[1179]469              END DO
470           END DO
471           CALL writefield_phy('pi_day_tgt2',pi_var_day(:,:,id_aero),klev)
472           CALL writefield_phy('pi_load_tgt',load_tgt(:),1)
473           CALL writefield_phy('pi_load_tgt_test',load_tgt_test(:),1)
474           CALL writefield_phy('pi_load_src',pi_load_src(:),1)
475        END IF
476
477
478     ELSE   ! No vertical interpolation done
479
480        var_day(:,:,id_aero)    = tmp1(:,:)
481        pi_var_day(:,:,id_aero) = tmp2(:,:)
482
483     END IF ! vert_interp
484
485
486     ! Deallocation
487     DEALLOCATE(tmp1, tmp2, pplay_src, stat=ierr)
488
489!****************************************************************************************
490! 4) Test for negative mass values
491!
492!****************************************************************************************
493     IF (MINVAL(var_day(:,:,id_aero)) < 0.) THEN
494        DO k=1,klev
495           DO i=1,klon
496              ! Test for var_day
497              IF (var_day(i,k,id_aero) < 0.) THEN
[1265]498                 IF (jDay-day2 < 0.) WRITE(lunout,*) 'jDay-day2=',jDay-day2
[1179]499                 IF (var_year(i,k,im2,id_aero) - var_year(i,k,im,id_aero) < 0.) THEN
500                    WRITE(lunout,*) trim(name_aero(id_aero)),'(i,k,im2)-', &
501                         trim(name_aero(id_aero)),'(i,k,im)=',           &
502                         var_year(i,k,im2,id_aero) - var_year(i,k,im,id_aero)
503                 END IF
504                 WRITE(lunout,*) 'stop for aerosol : ',name_aero(id_aero)
[1273]505                 WRITE(lunout,*) 'day1, day2, jDay = ', day1, day2, jDay
[1179]506                 CALL abort_gcm('readaerosol_interp','Error in interpolation 1',1)
507              END IF
508           END DO
509        END DO
510     END IF
511
512     IF (MINVAL(pi_var_day(:,:,id_aero)) < 0. ) THEN
513        DO k=1, klev
514           DO i=1,klon
515              ! Test for pi_var_day
516              IF (pi_var_day(i,k,id_aero) < 0.) THEN
[1265]517                 IF (jDay-day2 < 0.) WRITE(lunout,*) 'jDay-day2=',jDay-day2
[1179]518                 IF (pi_var_year(i,k,im2,id_aero) - pi_var_year(i,k,im,id_aero) < 0.) THEN
519                    WRITE(lunout,*) trim(name_aero(id_aero)),'(i,k,im2)-', &
520                         trim(name_aero(id_aero)),'(i,k,im)=',           &
521                         pi_var_year(i,k,im2,id_aero) - pi_var_year(i,k,im,id_aero)
522                 END IF
523                 
524                 WRITE(lunout,*) 'stop for aerosol : ',name_aero(id_aero)
525                 CALL abort_gcm('readaerosol_interp','Error in interpolation 2',1)
526              END IF
527           END DO
528        END DO
529     END IF
530
531  END IF ! lnewday
532
533!****************************************************************************************
534! Copy output from saved variables
535!
536!****************************************************************************************
537
538  mass_out(:,:)    = var_day(:,:,id_aero)
539  pi_mass_out(:,:) = pi_var_day(:,:,id_aero)
540 
541END SUBROUTINE readaerosol_interp
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