source: LMDZ6/branches/cirrus/libf/phylmd/tracco2i_mod.F90 @ 5422

Last change on this file since 5422 was 4489, checked in by lguez, 21 months ago

Merge LMDZ_ECRad branch back into trunk!
File size: 18.4 KB
Line 
1MODULE tracco2i_mod
2!
3! This module does the work for the interactive CO2 tracers
4! Authors: Patricia Cadule and Olivier Boucher
5!
6! Purpose and description:
7!  -----------------------
8! Main routine for the interactive carbon cycle
9! Gather all carbon fluxes and emissions from ORCHIDEE, PISCES and fossil fuel
10! Compute the net flux in source field which is used in phytrac
11! Compute global CO2 mixing ratio for radiation scheme if option is activated
12! Redistribute CO2 evenly over the atmosphere if transport is desactivated
13!
14CONTAINS
15
16  SUBROUTINE tracco2i_init()
17    ! This subroutine calls carbon_cycle_init needed to be done before first call to phys_output_write in physiq.
18    USE carbon_cycle_mod, ONLY: carbon_cycle_init, carbon_cycle_cpl
19
20    ! Initialize carbon_cycle_mod
21    IF (carbon_cycle_cpl) THEN
22       CALL carbon_cycle_init()
23    ENDIF
24
25  END SUBROUTINE tracco2i_init
26
27  SUBROUTINE tracco2i(pdtphys, debutphy, &
28       xlat, xlon, pphis, pphi, &
29       t_seri, pplay, paprs, tr_seri, source)
30
31    USE dimphy
32    USE infotrac_phy, ONLY: nbtr
33    USE geometry_mod, ONLY: cell_area
34    USE carbon_cycle_mod, ONLY: id_CO2, nbcf_in, fields_in, cfname_in
35    USE carbon_cycle_mod, ONLY: fco2_ocn_day, fco2_ff, fco2_bb, fco2_land, fco2_ocean
36    USE carbon_cycle_mod, ONLY: read_fco2_ocean_cor,var_fco2_ocean_cor,fco2_ocean_cor
37    USE carbon_cycle_mod, ONLY: read_fco2_land_cor,var_fco2_land_cor,fco2_land_cor
38    USE carbon_cycle_mod, ONLY: co2_send
39    USE carbon_cycle_mod, ONLY: fco2_land_nbp, fco2_land_nep, fco2_land_fLuc
40    USE carbon_cycle_mod, ONLY: fco2_land_fwoodharvest, fco2_land_fHarvest
41    USE carbon_cycle_mod, ONLY: carbon_cycle_cpl, carbon_cycle_tr, carbon_cycle_rad, RCO2_glo, RCO2_tot
42    USE carbon_cycle_mod, ONLY: ocean_area_tot
43    USE carbon_cycle_mod, ONLY: land_area_tot
44    USE mod_grid_phy_lmdz
45    USE mod_phys_lmdz_mpi_data, ONLY: is_mpi_root
46    USE mod_phys_lmdz_para, ONLY: gather, bcast, scatter
47    USE mod_phys_lmdz_omp_data, ONLY: is_omp_root
48    USE phys_cal_mod
49    USE phys_state_var_mod, ONLY: pctsrf
50    USE indice_sol_mod, ONLY: nbsrf, is_ter, is_lic, is_oce, is_sic
51
52    IMPLICIT NONE
53
54    INCLUDE "clesphys.h"
55    INCLUDE "YOMCST.h"
56
57! Input argument
58!---------------
59    REAL,INTENT(IN)    :: pdtphys    ! Pas d'integration pour la physique (seconde)
60    LOGICAL,INTENT(IN) :: debutphy   ! le flag de l'initialisation de la physique
61
62    REAL,DIMENSION(klon),INTENT(IN)        :: xlat    ! latitudes pour chaque point
63    REAL,DIMENSION(klon),INTENT(IN)        :: xlon    ! longitudes pour chaque point
64    REAL,DIMENSION(klon),INTENT(IN)        :: pphis   ! geopotentiel du sol
65    REAL,DIMENSION(klon,klev),INTENT(IN)   :: pphi    ! geopotentiel de chaque couche
66
67    REAL,DIMENSION(klon,klev),INTENT(IN)   :: t_seri  ! Temperature
68    REAL,DIMENSION(klon,klev),INTENT(IN)   :: pplay   ! pression pour le mileu de chaque couche (en Pa)
69    REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs   ! pression pour chaque inter-couche (en Pa)
70    REAL,DIMENSION(klon,nbtr),INTENT(INOUT):: source  ! flux de traceur [U/m2/s]
71
72! Output argument
73!----------------
74    REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT)  :: tr_seri ! Concentration Traceur [U/kgA] 
75
76! Local variables
77!----------------
78
79    INTEGER                        :: it, k, i, nb
80    REAL, DIMENSION(klon,klev)     :: m_air     ! mass of air in every grid box [kg]
81    REAL, DIMENSION(klon_glo,klev) :: co2_glo   ! variable temporaire sur la grille global
82    REAL, DIMENSION(klon_glo,klev) :: m_air_glo ! variable temporaire sur la grille global
83    REAL, DIMENSION(klon_glo,nbsrf):: pctsrf_glo      !--fractions de maille sur la grille globale
84    REAL, DIMENSION(klon_glo)      :: pctsrf_ter_glo
85    REAL, DIMENSION(klon_glo)      :: pctsrf_oce_glo
86    REAL, DIMENSION(klon_glo)      :: pctsrf_sic_glo
87    REAL, DIMENSION(klon_glo)      :: cell_area_glo   !--aire des mailles sur la grille globale
88
89    LOGICAL, SAVE :: check_fCO2_nbp_in_cfname
90!$OMP THREADPRIVATE(check_fCO2_nbp_in_cfname)
91    INTEGER, SAVE :: day_pre=-1
92!$OMP THREADPRIVATE(day_pre)
93
94    REAL, PARAMETER :: secinday=86400.
95
96    IF (is_mpi_root) THEN
97      PRINT *,'in tracco2i: date from phys_cal_mod =',year_cur,'-',mth_cur,'-',day_cur,'-',hour
98    ENDIF
99
100!--initialisation of CO2 field if not in restart file
101!--dirty way of doing, do it better later
102!--convert 280 ppm into kg CO2 / kg air
103    IF (debutphy) THEN
104
105! Initialization of tr_seri(id_CO2) If it is not initialized
106      IF (MAXVAL(tr_seri(:,:,id_CO2)).LT.1.e-15) THEN
107        tr_seri(:,:,id_CO2)=co2_ppm0*1.e-6/RMD*RMCO2 !--initialised from co2_ppm0 in rdem
108      ENDIF
109
110!--check if fCO2_nbp is in
111      check_fCO2_nbp_in_cfname=.FALSE.
112      DO nb=1, nbcf_in
113        IF (cfname_in(nb)=="fCO2_nbp") check_fCO2_nbp_in_cfname=.TRUE.
114      ENDDO
115
116      CALL gather(pctsrf,pctsrf_glo)
117      CALL gather(pctsrf(:,is_ter),pctsrf_ter_glo)
118      CALL gather(pctsrf(:,is_oce),pctsrf_oce_glo)
119      CALL gather(pctsrf(:,is_sic),pctsrf_sic_glo)
120      CALL gather(cell_area(:),cell_area_glo)
121
122    ENDIF
123
124!--calculate mass of air in every grid box in kg air
125    DO i=1, klon
126    DO k=1, klev
127      m_air(i,k)=(paprs(i,k)-paprs(i,k+1))/RG*cell_area(i)
128    ENDDO
129    ENDDO
130
131!--call CO2 emission routine
132!--co2bb is zero for now
133!--unit kg CO2 m-2 s-1
134    CALL co2_emissions(debutphy)
135
136!--retrieving land and ocean CO2 flux
137    fco2_land(:)=0.0
138    fco2_ocean(:)=0.0
139    fco2_land_nbp(:)=0.
140    fco2_land_nep(:)=0.
141    fco2_land_fLuc(:)=0.
142    fco2_land_fwoodharvest(:)=0.
143    fco2_land_fHarvest(:)=0.
144
145    DO nb=1, nbcf_in
146
147      SELECT CASE(cfname_in(nb))
148!--dealing with the different fluxes coming from ORCHIDEE
149!--fluxes come in unit of kg C m-2 s-1 is converted into kg CO2 m-2 s-1
150      CASE("fCO2_nep")
151          fco2_land_nep(:)=fields_in(:,nb)*RMCO2/RMC*pctsrf(:,is_ter)
152      CASE("fCO2_fLuc")
153          fco2_land_fLuc(:)=fields_in(:,nb)*RMCO2/RMC*pctsrf(:,is_ter)
154      CASE("fCO2_fwoodharvest")
155          fco2_land_fwoodharvest(:)=fields_in(:,nb)*RMCO2/RMC*pctsrf(:,is_ter)
156      CASE("fCO2_fHarvest")
157          fco2_land_fHarvest(:)=fields_in(:,nb)*RMCO2/RMC*pctsrf(:,is_ter)
158      CASE("fCO2_nbp")
159          fco2_land_nbp(:)=fields_in(:,nb)*RMCO2/RMC*pctsrf(:,is_ter)
160!--fCO2_fco2_ocn comes in unit of mol C02 m-2 s-1 is converted into kg CO2 m-2 s-1 + change sign
161      CASE("fCO2_fgco2")
162          fco2_ocean(:)=-1.*fco2_ocn_day(:)*RMCO2/1.e3*(pctsrf(:,is_oce)+pctsrf(:,is_sic))
163      END SELECT
164
165    ENDDO
166
167    PRINT *, 'tracco2i_mod.F90 --- read_fco2_ocean_cor ',read_fco2_ocean_cor
168    PRINT *, 'tracco2i_mod.F90 --- read_fco2_land_cor ',read_fco2_land_cor
169
170IF (debutphy) THEN
171
172    IF (read_fco2_ocean_cor) THEN
173!$OMP MASTER
174       IF (is_mpi_root .AND. is_omp_root) THEN
175          ocean_area_tot=0.
176          PRINT *, 'tracco2i_mod.F90 --- var_fco2_ocean_cor (PgC/yr) ',var_fco2_ocean_cor
177          DO i=1, klon_glo
178             ocean_area_tot = ocean_area_tot + (pctsrf_oce_glo(i)+pctsrf_sic_glo(i))*cell_area_glo(i)
179          ENDDO
180      ENDIF !--is_mpi_root and is_omp_root
181!$OMP END MASTER
182      CALL bcast(ocean_area_tot)
183     PRINT *, 'tracco2i_mod.F90 --- ocean_area_tot (debutphy) ',ocean_area_tot
184    ENDIF
185
186    IF (read_fco2_land_cor) THEN
187!$OMP MASTER
188       IF (is_mpi_root .AND. is_omp_root) THEN
189          land_area_tot=0.
190          PRINT *, 'tracco2i_mod.F90 --- var_fco2_land_cor (PgC/yr) ',var_fco2_land_cor
191          DO i=1, klon_glo
192             land_area_tot = land_area_tot + pctsrf_ter_glo(i)*cell_area_glo(i)
193          ENDDO
194      ENDIF !--is_mpi_root and is_omp_root
195!$OMP END MASTER
196      CALL bcast(land_area_tot)
197     PRINT *, 'tracco2i_mod.F90 --- land_area_tot (debutphy) ',land_area_tot
198ENDIF
199
200    ENDIF !-- debutphy 
201
202    PRINT *, 'tracco2i_mod.F90 --- ocean_area_tot (m2) ',ocean_area_tot
203    PRINT *, 'tracco2i_mod.F90 --- land_area_tot (m2) ',land_area_tot
204
205    IF (read_fco2_ocean_cor) THEN
206! var_fco2_ocean_cor: correction of the surface downward CO2 flux into the ocean fgco2 (PgC/yr)
207! This is the correction of the the net air to ocean carbon flux. Positive flux is into the ocean.
208!    PRINT *, 'tracco2i_mod.F90 --- var_fco2_ocean_cor (PgC/yr) ',var_fco2_ocean_cor
209
210!var_fco2_ocean_cor: correction of the net air to ocean carbon flux (input data is a scalar in PgC/yr and must be converted in kg CO2 m-2 s-1)
211
212! Factors for carbon and carbon dioxide
213! 1 mole CO2 = 44.009 g CO2 = 12.011 g C
214! 1 ppm by volume of atmosphere CO2 = 2.13 Gt C
215! 1 gC = 44.009/12.011 gCO2
216
217! ocean_area_tot: ocean area (m2)
218
219! year_len: year length (in days)
220
221! conversion: PgC/yr --> kg CO2 m-2 s-1
222! fco2_ocean_cor  / (86400.*year_len): PgC/yr to PgC/s
223! fco2_ocean_cor  / (86400.*year_len)*(pctsrf(i,is_oce)+pctsrf(i,is_sic))/ocean_area_tot: PgC/s to PgC/s/m2
224! (fco2_ocean_cor / (86400.*year_len)*(pctsrf(i,is_oce)+pctsrf(i,is_sic))/ocean_area_tot) *1e12: PgC/s/m2 to kgC/s/m2
225! (fco2_ocean_cor / (86400.*year_len)*(pctsrf(i,is_oce)+pctsrf(i,is_sic))/ocean_area_tot) * 1e12 * (RMCO2/RMC): kgC/s/m2 to kgCO2/s/m2
226
227      DO i=1, klon 
228         fco2_ocean_cor(i)=(var_fco2_ocean_cor*(RMCO2/RMC) &
229              *(pctsrf(i,is_oce)+pctsrf(i,is_sic))/ocean_area_tot &
230              /(secinday*year_len))*1.e12
231      ENDDO
232
233      PRINT *, 'tracco2i_mod.F90 --- MINVAL(fco2_ocean_cor) ',MINVAL(fco2_ocean_cor)
234      PRINT *, 'tracco2i_mod.F90 --- MAXVAL(fco2_ocean_cor) ',MAXVAL(fco2_ocean_cor)
235
236    ELSE
237    fco2_ocean_cor(:)=0.
238    ENDIF
239
240    IF (read_fco2_land_cor) THEN
241! var_fco2_land_cor: correction of the carbon Mass Flux out of Atmosphere Due to Net Biospheric Production on Land  (PgC/yr)
242! This is the correction of the net mass flux of carbon between land and atmosphere calculated as
243! photosynthesis MINUS the sum of plant and soil respiration, carbon fluxes from
244! fire, harvest, grazing and land use change. Positive flux is into the land.
245!    PRINT *, 'tracco2i_mod.F90 --- var_fco2_land_cor (m2) ',var_fco2_land_cor
246
247!var_fco2_land_cor: correction of the et air to land carbon flux (input data is a scalar in PgC/yr and must be converted in kg CO2 m-2 s-1)
248
249! Factors for carbon and carbon dioxide
250! 1 mole CO2 = 44.009 g CO2 = 12.011 g C
251! 1 ppm by volume of atmosphere CO2 = 2.13 Gt C
252! 1 gC = 44.009/12.011 gCO2
253
254! land_area_tot: land area (m2)
255
256! year_len: year length (in days)
257
258! conversion: PgC/yr --> kg CO2 m-2 s-1
259! fco2_land_cor  / (86400.*year_len): PgC/yr to PgC/s
260! fco2_land_cor  / (86400.*year_len)*pctsrf(i,is_ter)/land_area_tot: PgC/s to PgC/s/m2
261! (fco2_land_cor / (86400.*year_len)*pctsrf(i,is_ter)/land_area_tot) *1e12: PgC/s/m2 to kgC/s/m2
262! (fco2_land_cor / (86400.*year_len)*pctsrf(i,is_ter)/land_area_tot) * 1e12 * (RMCO2/RMC): kgC/s/m2 to kgCO2/s/m2
263
264      DO i=1, klon
265         fco2_land_cor(i)=var_fco2_land_cor*RMCO2/RMC*pctsrf(i,is_ter)/land_area_tot/(secinday*year_len)*1.e12
266      ENDDO
267
268      PRINT *, 'tracco2i_mod.F90 --- MINVAL(fco2_land_cor) ',MINVAL(fco2_land_cor)
269      PRINT *, 'tracco2i_mod.F90 --- MAXVAL(fco2_land_cor) ',MAXVAL(fco2_land_cor)
270
271    ELSE
272      fco2_land_cor(:)=0.
273    ENDIF
274
275!--if fCO2_nbp is transferred we use it, otherwise we use the sum of what has been passed from ORCHIDEE
276    IF (check_fCO2_nbp_in_cfname)  THEN
277       fco2_land(:)=fco2_land_nbp(:)
278    ELSE
279       fco2_land(:)=fco2_land_nep(:)+fco2_land_fLuc(:)+fco2_land_fwoodharvest(:)+fco2_land_fHarvest(:)
280    ENDIF
281
282!!--preparing the net anthropogenic flux at the surface for mixing layer
283!!--unit kg CO2 / m2 / s
284!    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(fco2_ff) ',MAXVAL(fco2_ff)
285!    PRINT *, 'tracco2i_mod.F90 --- MINVAL(fco2_ff) ',MINVAL(fco2_ff)
286!    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(fco2_bb) ',MAXVAL(fco2_bb)
287!    PRINT *, 'tracco2i_mod.F90 --- MINVAL(fco2_bb) ',MINVAL(fco2_bb)
288!    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(fco2_land) ',MAXVAL(fco2_land)
289!    PRINT *, 'tracco2i_mod.F90 --- MINVAL(fco2_land) ',MINVAL(fco2_land)
290!    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(fco2_ocean) ',MAXVAL(fco2_ocean)
291!    PRINT *, 'tracco2i_mod.F90 --- MINVAL(fco2_ocean) ',MINVAL(fco2_ocean)
292!    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(source(:,id_CO2)) ',MAXVAL(source(:,id_CO2))
293!    PRINT *, 'tracco2i_mod.F90 --- MINVAL(source(:,id_CO2)) ',MINVAL(source(:,id_CO2))
294!
295!--build final source term for CO2
296    source(:,id_CO2)=fco2_ff(:)+fco2_bb(:)+fco2_land(:)+fco2_ocean(:)-fco2_ocean_cor(:)-fco2_land_cor(:)
297
298!--computing global mean CO2 for radiation
299!--for every timestep comment out the IF ENDIF statements
300!--otherwise this is updated every day
301    IF (debutphy.OR.day_cur.NE.day_pre) THEN
302
303      CALL gather(tr_seri(:,:,id_CO2),co2_glo)
304      CALL gather(m_air,m_air_glo)
305
306!$OMP MASTER
307
308!--compute a global mean CO2 value and print its value in ppm
309       IF (is_mpi_root .AND. is_omp_root) THEN
310         RCO2_tot=SUM(co2_glo*m_air_glo)  !--unit kg CO2
311         RCO2_glo=RCO2_tot/SUM(m_air_glo) !--unit kg CO2 / kg air
312         ! the following operation is only to maintain precision consistency
313         ! of RCO2_glo which differs whether it is directly computed or read from
314         ! a restart file (after having been computed)
315         RCO2_glo = FLOAT(INT(RCO2_glo * 1e8))/1e8
316         PRINT *,'tracco2i: global CO2 in ppm =', RCO2_glo*1.e6*RMD/RMCO2
317         PRINT *,'tracco2i: total CO2 in kg =', RCO2_tot
318       ENDIF
319!$OMP END MASTER
320       CALL bcast(RCO2_glo)
321       day_pre=day_cur
322
323!--if not carbon_cycle_tr, then we reinitialize the CO2 each day to its global mean value
324       IF (.NOT.carbon_cycle_tr) THEN
325         tr_seri(:,:,id_CO2)=RCO2_glo
326       ENDIF
327    ENDIF
328
329    PRINT *, 'tracco2i_mod.F90 --- MINVAL(tr_seri(:,1,id_CO2)*1.e6*RMD/RMCO2): L1: ',MINVAL(tr_seri(:,1,id_CO2)*1.e6*RMD/RMCO2)
330    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(tr_seri(:,1,id_CO2)*1.e6*RMD/RMCO2): L1: ',MAXVAL(tr_seri(:,1,id_CO2)*1.e6*RMD/RMCO2)
331
332    PRINT *, 'tracco2i_mod.F90 --- MINVAL(tr_seri(:,79,id_CO2)*1.e6*RMD/RMCO2): L79: ',MINVAL(tr_seri(:,79,id_CO2)*1.e6*RMD/RMCO2)
333    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(tr_seri(:,79,id_CO2)*1.e6*RMD/RMCO2): L79: ',MAXVAL(tr_seri(:,79,id_CO2)*1.e6*RMD/RMCO2)
334
335    co2_send(:) = tr_seri(:,1,id_CO2)*1.e6*RMD/RMCO2
336
337    PRINT *, 'tracco2i_mod.F90 --- MINVAL(co2_send) ',MINVAL(co2_send)
338    PRINT *, 'tracco2i_mod.F90 --- MAXVAL(co2_send) ',MAXVAL(co2_send)
339
340  END SUBROUTINE tracco2i
341
342  SUBROUTINE co2_emissions(debutphy)
343
344    USE dimphy
345!    USE infotrac_phy
346    USE geometry_mod, ONLY : cell_area
347    USE mod_grid_phy_lmdz
348    USE mod_phys_lmdz_mpi_data, ONLY: is_mpi_root
349    USE mod_phys_lmdz_para, ONLY: gather, scatter
350    USE phys_cal_mod
351
352    USE netcdf95, ONLY: nf95_close, nf95_gw_var, nf95_inq_varid, nf95_open
353    USE netcdf, ONLY: nf90_get_var, nf90_noerr, nf90_nowrite
354
355    USE carbon_cycle_mod, ONLY : fco2_ff, fco2_bb, fco2_land, fco2_ocean
356
357    IMPLICIT NONE
358
359    INCLUDE "YOMCST.h"
360    LOGICAL,INTENT(IN) :: debutphy
361
362! For NetCDF:
363    INTEGER ncid_in  ! IDs for input files
364    INTEGER varid, ncerr
365
366    INTEGER :: n_glo, n_month
367    REAL, allocatable:: vector(:), time(:)
368    REAL,ALLOCATABLE       :: flx_co2ff_glo(:,:) !  fossil-fuel CO2
369    REAL,ALLOCATABLE       :: flx_co2bb_glo(:,:) !  biomass-burning CO2
370    REAL,ALLOCATABLE, SAVE :: flx_co2ff(:,:)     !  fossil-fuel CO2
371    REAL,ALLOCATABLE, SAVE :: flx_co2bb(:,:)     !  biomass-burning CO2
372!$OMP THREADPRIVATE(flx_co2ff,flx_co2bb)
373
374!! may be controlled via the .def later on
375!! also co2bb for now comes from ORCHIDEE
376    LOGICAL, PARAMETER :: readco2ff=.TRUE.
377!! this should be left to FALSE for now
378    LOGICAL, PARAMETER :: readco2bb=.FALSE.
379
380    CHARACTER (len = 20) :: modname = 'tracco2i.co2_emissions'
381    CHARACTER (len = 80) :: abort_message
382
383    IF (debutphy) THEN
384
385    ALLOCATE(flx_co2ff(klon,12))
386    ALLOCATE(flx_co2bb(klon,12))
387
388!$OMP MASTER
389    IF (is_mpi_root) THEN
390   
391      IF (.NOT.ALLOCATED(flx_co2ff_glo)) ALLOCATE(flx_co2ff_glo(klon_glo,12))
392      IF (.NOT.ALLOCATED(flx_co2bb_glo)) ALLOCATE(flx_co2bb_glo(klon_glo,12))
393
394!--reading CO2 fossil fuel emissions
395      IF (readco2ff) THEN
396
397        ! ... Open the CO2ff file
398        CALL nf95_open("sflx_lmdz_co2_ff.nc", nf90_nowrite, ncid_in)
399
400        CALL nf95_inq_varid(ncid_in, "vector", varid)
401        CALL nf95_gw_var(ncid_in, varid, vector)
402        n_glo = size(vector)
403        IF (n_glo.NE.klon_glo) THEN
404           abort_message='sflx_lmdz_co2_ff: le nombre de points n est pas egal a klon_glo'
405           CALL abort_physic(modname,abort_message,1)
406        ENDIF
407
408        CALL nf95_inq_varid(ncid_in, "time", varid)
409        CALL nf95_gw_var(ncid_in, varid, time)
410        n_month = size(time)
411        IF (n_month.NE.12) THEN
412           abort_message='sflx_lmdz_co2_ff: le nombre de month n est pas egal a 12'
413           CALL abort_physic(modname,abort_message,1)
414        ENDIF
415
416!--reading flx_co2 for fossil fuel
417        CALL nf95_inq_varid(ncid_in, "flx_co2", varid)
418        ncerr = nf90_get_var(ncid_in, varid, flx_co2ff_glo)
419
420        CALL nf95_close(ncid_in)
421   
422      ELSE  !--co2ff not to be read
423        flx_co2ff_glo(:,:)=0.0
424      ENDIF
425
426!--reading CO2 biomass burning emissions
427!--using it will be inconsistent with treatment in ORCHIDEE
428      IF (readco2bb) THEN
429
430      ! ... Open the CO2bb file
431      CALL nf95_open("sflx_lmdz_co2_bb.nc", nf90_nowrite, ncid_in)
432
433      CALL nf95_inq_varid(ncid_in, "vector", varid)
434      CALL nf95_gw_var(ncid_in, varid, vector)
435      n_glo = size(vector)
436      IF (n_glo.NE.klon_glo) THEN
437         abort_message='sflx_lmdz_co2_bb: le nombre de points n est pas egal a klon_glo'
438         CALL abort_physic(modname,abort_message,1)
439      ENDIF
440
441      CALL nf95_inq_varid(ncid_in, "time", varid)
442      CALL nf95_gw_var(ncid_in, varid, time)
443      n_month = size(time)
444      IF (n_month.NE.12) THEN
445         abort_message='sflx_lmdz_co2_bb: le nombre de month n est pas egal a 12'
446         CALL abort_physic(modname,abort_message,1)
447      ENDIF
448
449!--reading flx_co2 for biomass burning
450      CALL nf95_inq_varid(ncid_in, "flx_co2", varid)
451      ncerr = nf90_get_var(ncid_in, varid, flx_co2bb_glo)
452
453      CALL nf95_close(ncid_in)
454   
455      ELSE  !--co2bb not to be read
456        flx_co2bb_glo(:,:)=0.0
457      ENDIF
458
459    ENDIF
460!$OMP END MASTER
461
462    ! Allocation needed for all proc otherwise scatter might complain
463    IF (.NOT.ALLOCATED(flx_co2ff_glo)) ALLOCATE(flx_co2ff_glo(0,0))
464    IF (.NOT.ALLOCATED(flx_co2bb_glo)) ALLOCATE(flx_co2bb_glo(0,0))
465
466!--scatter on all proc
467    CALL scatter(flx_co2ff_glo,flx_co2ff)
468    CALL scatter(flx_co2bb_glo,flx_co2bb)
469
470   IF (ALLOCATED(flx_co2ff_glo)) DEALLOCATE(flx_co2ff_glo)
471   IF (ALLOCATED(flx_co2bb_glo)) DEALLOCATE(flx_co2bb_glo)
472
473  ENDIF !--end debuthy
474
475!---select the correct month
476  IF (mth_cur.LT.1.OR.mth_cur.GT.12) THEN
477    PRINT *,'probleme avec le mois dans co2_ini =', mth_cur
478  ENDIF
479
480  fco2_ff(:) = flx_co2ff(:,mth_cur)
481  fco2_bb(:) = flx_co2bb(:,mth_cur)
482
483  END SUBROUTINE co2_emissions
484
485END MODULE tracco2i_mod
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