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readaerosol.F90 @ 2394

Last change on this file since 2394 was 2346, checked in by Ehouarn Millour, 9 years ago

Physics/dynamics separation:

remove all references to dimensions.h from physics. nbp_lon (==iim) , nbp_lat (==jjm+1) and nbp_lev (==llm) from mod_grid_phy_lmdz should be used instead.
added module regular_lonlat_mod in phy_common to store information about the global (lon-lat) grid cell boundaries and centers.

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:keywords set to Author Date Id Revision

File size: 24.7 KB

Rev	Line
[1179]	1	! $Id: readaerosol.F90 2346 2015-08-21 15:13:46Z acozic $
[524]	2	!
[1179]	3	MODULE readaerosol_mod
	4
	5	REAL, SAVE :: not_valid=-333.
	6
	7	CONTAINS
	8
[1492]	9	SUBROUTINE readaerosol(name_aero, type, filename, iyr_in, klev_src, pt_ap, pt_b, pt_out, psurf, load)
[1179]	10
	11	!****************************************************************************************
	12	! This routine will read the aersosol from file.
[524]	13	!
[1179]	14	! Read a year data with get_aero_fromfile depending on aer_type :
	15	! - actuel : read year 1980
	16	! - preind : read natural data
	17	! - scenario : read one or two years and do eventually linare time interpolation
[1150]	18	!
[1179]	19	! Return pointer, pt_out, to the year read or result from interpolation
	20	!****************************************************************************************
	21	USE dimphy
[2311]	22	USE print_control_mod, ONLY: lunout
[524]	23
[1179]	24	IMPLICIT NONE
[766]	25
[1179]	26	! Input arguments
	27	CHARACTER(len=7), INTENT(IN) :: name_aero
[1492]	28	CHARACTER(len=*), INTENT(IN) :: type ! actuel, annuel, scenario or preind
	29	CHARACTER(len=8), INTENT(IN) :: filename
[1179]	30	INTEGER, INTENT(IN) :: iyr_in
[1150]	31
[1179]	32	! Output
	33	INTEGER, INTENT(OUT) :: klev_src
	34	REAL, POINTER, DIMENSION(:) :: pt_ap ! Pointer for describing the vertical levels
	35	REAL, POINTER, DIMENSION(:) :: pt_b ! Pointer for describing the vertical levels
[1270]	36	REAL, POINTER, DIMENSION(:,:,:) :: pt_out ! The massvar distributions, DIMENSION(klon, klev_src, 12)
	37	REAL, DIMENSION(klon,12), INTENT(OUT) :: psurf ! Surface pression for 12 months
	38	REAL, DIMENSION(klon,12), INTENT(OUT) :: load ! Aerosol mass load in each column for 12 months
[1150]	39
[1179]	40	! Local variables
[1270]	41	CHARACTER(len=4) :: cyear
	42	REAL, POINTER, DIMENSION(:,:,:) :: pt_2
	43	REAL, DIMENSION(klon,12) :: psurf2, load2
	44	REAL :: p0 ! Reference pressure
	45	INTEGER :: iyr1, iyr2, klev_src2
	46	INTEGER :: it, k, i
	47	LOGICAL, PARAMETER :: lonlyone=.FALSE.
[1150]	48
[1179]	49	!****************************************************************************************
	50	! Read data depending on aer_type
	51	!
	52	!****************************************************************************************
[524]	53
[1179]	54	IF (type == 'actuel') THEN
	55	! Read and return data for year 1980
	56	!****************************************************************************************
	57	cyear='1980'
[1270]	58	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
	59	! pt_out has dimensions (klon, klev_src, 12)
[1492]	60	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
[1179]	61
[640]	62
[1179]	63	ELSE IF (type == 'preind') THEN
	64	! Read and return data from file with suffix .nat
	65	!****************************************************************************************
	66	cyear='.nat'
[1270]	67	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
	68	! pt_out has dimensions (klon, klev_src, 12)
[1492]	69	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
[1179]	70
[1321]	71	ELSE IF (type == 'annuel') THEN
	72	! Read and return data from scenario annual files
	73	!****************************************************************************************
	74	WRITE(cyear,'(I4)') iyr_in
	75	WRITE(lunout,*) 'get_aero 3 iyr_in=', iyr_in,' ',cyear
	76	! get_aero_fromfile returns pt_out allocated and initialized with data for nbr_tsteps month
	77	! pt_out has dimensions (klon, klev_src, 12)
[1492]	78	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
[1321]	79
[1179]	80	ELSE IF (type == 'scenario') THEN
	81	! Read data depending on actual year and interpolate if necessary
	82	!****************************************************************************************
	83	IF (iyr_in .LT. 1850) THEN
	84	cyear='.nat'
	85	WRITE(lunout,*) 'get_aero 1 iyr_in=', iyr_in,' ',cyear
[1270]	86	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
	87	! pt_out has dimensions (klon, klev_src, 12)
[1492]	88	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
[1179]	89
	90	ELSE IF (iyr_in .GE. 2100) THEN
	91	cyear='2100'
	92	WRITE(lunout,*) 'get_aero 2 iyr_in=', iyr_in,' ',cyear
[1270]	93	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
	94	! pt_out has dimensions (klon, klev_src, 12)
[1492]	95	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
[1179]	96
	97	ELSE
	98	! Read data from 2 decades and interpolate to actual year
	99	! a) from actual 10-yr-period
	100	IF (iyr_in.LT.1900) THEN
	101	iyr1 = 1850
	102	iyr2 = 1900
	103	ELSE IF (iyr_in.GE.1900.AND.iyr_in.LT.1920) THEN
	104	iyr1 = 1900
	105	iyr2 = 1920
	106	ELSE
	107	iyr1 = INT(iyr_in/10)*10
	108	iyr2 = INT(1+iyr_in/10)*10
	109	ENDIF
	110
	111	WRITE(cyear,'(I4)') iyr1
	112	WRITE(lunout,*) 'get_aero 3 iyr_in=', iyr_in,' ',cyear
[1270]	113	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
	114	! pt_out has dimensions (klon, klev_src, 12)
[1492]	115	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
[1179]	116
	117	! If to read two decades:
	118	IF (.NOT.lonlyone) THEN
	119
	120	! b) from the next following one
	121	WRITE(cyear,'(I4)') iyr2
	122	WRITE(lunout,*) 'get_aero 4 iyr_in=', iyr_in,' ',cyear
	123
	124	NULLIFY(pt_2)
[1270]	125	! get_aero_fromfile returns pt_2 allocated and initialized with data for 12 month
	126	! pt_2 has dimensions (klon, klev_src, 12)
[1492]	127	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src2, pt_ap, pt_b, p0, pt_2, psurf2, load2)
[1179]	128	! Test for same number of vertical levels
	129	IF (klev_src /= klev_src2) THEN
	130	WRITE(lunout,*) 'Two aerosols files with different number of vertical levels is not allowded'
[2311]	131	CALL abort_physic('readaersosol','Error in number of vertical levels',1)
[1179]	132	END IF
	133
	134	! Linare interpolate to the actual year:
[1270]	135	DO it=1,12
[1179]	136	DO k=1,klev_src
	137	DO i = 1, klon
	138	pt_out(i,k,it) = &
[1403]	139	pt_out(i,k,it) - REAL(iyr_in-iyr1)/REAL(iyr2-iyr1) * &
[1179]	140	(pt_out(i,k,it) - pt_2(i,k,it))
	141	END DO
	142	END DO
[1143]	143
[1179]	144	DO i = 1, klon
[1270]	145	psurf(i,it) = &
[1403]	146	psurf(i,it) - REAL(iyr_in-iyr1)/REAL(iyr2-iyr1) * &
[1270]	147	(psurf(i,it) - psurf2(i,it))
[640]	148
[1270]	149	load(i,it) = &
[1403]	150	load(i,it) - REAL(iyr_in-iyr1)/REAL(iyr2-iyr1) * &
[1270]	151	(load(i,it) - load2(i,it))
[1179]	152	END DO
	153	END DO
[524]	154
[1179]	155	! Deallocate pt_2 no more needed
	156	DEALLOCATE(pt_2)
	157
	158	END IF ! lonlyone
	159	END IF ! iyr_in .LT. 1850
[524]	160
[1179]	161	ELSE
[1492]	162	WRITE(lunout,*)'This option is not implemented : aer_type = ', type,' name_aero=',name_aero
[2311]	163	CALL abort_physic('readaerosol','Error : aer_type parameter not accepted',1)
[1179]	164	END IF ! type
[640]	165
[1151]	166
[1179]	167	END SUBROUTINE readaerosol
[1143]	168
	169
[1492]	170	SUBROUTINE get_aero_fromfile(varname, cyr, filename, klev_src, pt_ap, pt_b, p0, pt_year, psurf_out, load_out)
[1179]	171	!****************************************************************************************
[1270]	172	! Read 12 month aerosol from file and distribute to local process on physical grid.
[1179]	173	! Vertical levels, klev_src, may differ from model levels if new file format.
	174	!
	175	! For mpi_root and master thread :
	176	! 1) Open file
	177	! 2) Find vertical dimension klev_src
	178	! 3) Read field month by month
	179	! 4) Close file
[2346]	180	! 5) Transform the global field from 2D(nbp_lon,nbp_lat) to 1D(klon_glo)
[1179]	181	! - Also the levels and the latitudes have to be inversed
	182	!
	183	! For all processes and threads :
	184	! 6) Scatter global field(klon_glo) to local process domain(klon)
	185	! 7) Test for negative values
	186	!****************************************************************************************
[1150]	187
[1179]	188	USE netcdf
	189	USE dimphy
[2346]	190	USE mod_grid_phy_lmdz, ONLY: nbp_lon, nbp_lat, klon_glo, &
	191	grid2Dto1D_glo
[1179]	192	USE mod_phys_lmdz_para
[1183]	193	USE iophy, ONLY : io_lon, io_lat
[2311]	194	USE print_control_mod, ONLY: lunout
[1179]	195
	196	IMPLICIT NONE
[524]	197
[1179]	198	! Input argumets
	199	CHARACTER(len=7), INTENT(IN) :: varname
	200	CHARACTER(len=4), INTENT(IN) :: cyr
[1492]	201	CHARACTER(len=8), INTENT(IN) :: filename
[1150]	202
[1179]	203	! Output arguments
	204	INTEGER, INTENT(OUT) :: klev_src ! Number of vertical levels in file
	205	REAL, POINTER, DIMENSION(:) :: pt_ap ! Pointer for describing the vertical levels
	206	REAL, POINTER, DIMENSION(:) :: pt_b ! Pointer for describing the vertical levels
	207	REAL :: p0 ! Reference pressure value
[1270]	208	REAL, POINTER, DIMENSION(:,:,:) :: pt_year ! Pointer-variabale from file, 12 month, grid : klon,klev_src
	209	REAL, DIMENSION(klon,12), INTENT(OUT) :: psurf_out ! Surface pression for 12 months
	210	REAL, DIMENSION(klon,12), INTENT(OUT) :: load_out ! Aerosol mass load in each column
[1319]	211	INTEGER :: nbr_tsteps ! number of month in file read
[1150]	212
[1179]	213	! Local variables
	214	CHARACTER(len=30) :: fname
	215	CHARACTER(len=30) :: cvar
	216	INTEGER :: ncid, dimid, varid
	217	INTEGER :: imth, i, j, k, ierr
	218	REAL :: npole, spole
	219	REAL, ALLOCATABLE, DIMENSION(:,:,:) :: varmth
[1270]	220	REAL, ALLOCATABLE, DIMENSION(:,:,:,:) :: varyear ! Global variable read from file, 12 month
	221	REAL, ALLOCATABLE, DIMENSION(:,:,:) :: varyear_glo1D !(klon_glo, klev_src, 12)
[1179]	222	REAL, ALLOCATABLE, DIMENSION(:) :: varktmp
[524]	223
[2346]	224	REAL, DIMENSION(nbp_lon,nbp_lat,12) :: psurf_glo2D ! Surface pression for 12 months on dynamics global grid
[1270]	225	REAL, DIMENSION(klon_glo,12) :: psurf_glo1D ! -"- on physical global grid
[2346]	226	REAL, DIMENSION(nbp_lon,nbp_lat,12) :: load_glo2D ! Load for 12 months on dynamics global grid
[1270]	227	REAL, DIMENSION(klon_glo,12) :: load_glo1D ! -"- on physical global grid
[2346]	228	REAL, DIMENSION(nbp_lon,nbp_lat) :: vartmp
	229	REAL, DIMENSION(nbp_lon) :: lon_src ! longitudes in file
	230	REAL, DIMENSION(nbp_lat) :: lat_src, lat_src_inv ! latitudes in file
[1183]	231	LOGICAL :: new_file ! true if new file format detected
	232	LOGICAL :: invert_lat ! true if the field has to be inverted for latitudes
[766]	233
[524]	234
[1179]	235	! Deallocate pointers
	236	IF (ASSOCIATED(pt_ap)) DEALLOCATE(pt_ap)
	237	IF (ASSOCIATED(pt_b)) DEALLOCATE(pt_b)
[766]	238
[1249]	239	IF (is_mpi_root .AND. is_omp_root) THEN
[524]	240
[1179]	241	! 1) Open file
	242	!****************************************************************************************
[1492]	243	! Add suffix to filename
	244	fname = trim(filename)//cyr//'.nc'
[1150]	245
[1492]	246	WRITE(lunout,*) 'reading variable ',TRIM(varname),' in file ', TRIM(fname)
[1609]	247	CALL check_err( nf90_open(TRIM(fname), NF90_NOWRITE, ncid), "pb open "//trim(varname) )
[1150]	248
[1183]	249	! Test for equal longitudes and latitudes in file and model
	250	!****************************************************************************************
	251	! Read and test longitudes
[1609]	252	CALL check_err( nf90_inq_varid(ncid, 'lon', varid),"pb inq lon" )
	253	CALL check_err( nf90_get_var(ncid, varid, lon_src(:)),"pb get lon" )
[1183]	254
[1202]	255	IF (maxval(ABS(lon_src - io_lon)) > 0.001) THEN
[1183]	256	WRITE(lunout,*) 'Problem in longitudes read from file : ',TRIM(fname)
	257	WRITE(lunout,*) 'longitudes in file ', TRIM(fname),' : ', lon_src
	258	WRITE(lunout,*) 'longitudes in model :', io_lon
	259
[2311]	260	CALL abort_physic('get_aero_fromfile', 'longitudes are not the same in file and model',1)
[1183]	261	END IF
	262
	263	! Read and test latitudes
[1609]	264	CALL check_err( nf90_inq_varid(ncid, 'lat', varid),"pb inq lat" )
	265	CALL check_err( nf90_get_var(ncid, varid, lat_src(:)),"pb get lat" )
[1183]	266
	267	! Invert source latitudes
[2346]	268	DO j = 1, nbp_lat
	269	lat_src_inv(j) = lat_src(nbp_lat +1 -j)
[1183]	270	END DO
	271
[1202]	272	IF (maxval(ABS(lat_src - io_lat)) < 0.001) THEN
[1183]	273	! Latitudes are the same
	274	invert_lat=.FALSE.
[1202]	275	ELSE IF (maxval(ABS(lat_src_inv - io_lat)) < 0.001) THEN
[1183]	276	! Inverted source latitudes correspond to model latitudes
	277	WRITE(lunout,*) 'latitudes will be inverted for file : ',TRIM(fname)
	278	invert_lat=.TRUE.
	279	ELSE
	280	WRITE(lunout,*) 'Problem in latitudes read from file : ',TRIM(fname)
	281	WRITE(lunout,*) 'latitudes in file ', TRIM(fname),' : ', lat_src
	282	WRITE(lunout,*) 'latitudes in model :', io_lat
[2311]	283	CALL abort_physic('get_aero_fromfile', 'latitudes do not correspond between file and model',1)
[1183]	284	END IF
	285
[1319]	286
[1179]	287	! 2) Check if old or new file is avalabale.
	288	! New type of file should contain the dimension 'lev'
	289	! Old type of file should contain the dimension 'PRESNIVS'
	290	!****************************************************************************************
	291	ierr = nf90_inq_dimid(ncid, 'lev', dimid)
	292	IF (ierr /= NF90_NOERR) THEN
	293	! Coordinate axe lev not found. Check for presnivs.
	294	ierr = nf90_inq_dimid(ncid, 'PRESNIVS', dimid)
	295	IF (ierr /= NF90_NOERR) THEN
	296	! Dimension PRESNIVS not found either
[2311]	297	CALL abort_physic('get_aero_fromfile', 'dimension lev or presnivs not in file',1)
[1179]	298	ELSE
	299	! Old file found
	300	new_file=.FALSE.
	301	WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will not be done'
	302	END IF
	303	ELSE
	304	! New file found
	305	new_file=.TRUE.
	306	WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will be done'
	307	END IF
	308
	309	! 2) Find vertical dimension klev_src
	310	!****************************************************************************************
[1609]	311	CALL check_err( nf90_inquire_dimension(ncid, dimid, len = klev_src),"pb inq dim for PRESNIVS or lev" )
[1179]	312
	313	! Allocate variables depending on the number of vertical levels
[2346]	314	ALLOCATE(varmth(nbp_lon,nbp_lat, klev_src), varyear(nbp_lon,nbp_lat, klev_src, 12), stat=ierr)
[2311]	315	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 1',1)
[1150]	316
[1179]	317	ALLOCATE(pt_ap(klev_src), pt_b(klev_src), varktmp(klev_src), stat=ierr)
[2311]	318	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 2',1)
[1150]	319
[1179]	320	! 3) Read all variables from file
	321	! There is 2 options for the file structure :
	322	! new_file=TRUE : read varyear, ps, pt_ap and pt_b
	323	! new_file=FALSE : read varyear month by month
	324	!****************************************************************************************
[1150]	325
[1179]	326	IF (new_file) THEN
[1492]	327	! ++) Check number of month in file opened
	328	!**************************************************************************************************
	329	ierr = nf90_inq_dimid(ncid, 'TIME',dimid)
[1609]	330	CALL check_err( nf90_inquire_dimension(ncid, dimid, len = nbr_tsteps),"pb inq dim TIME" )
[1492]	331	! IF (nbr_tsteps /= 12 .AND. nbr_tsteps /= 14) THEN
	332	IF (nbr_tsteps /= 12 ) THEN
[2317]	333	CALL abort_physic('get_aero_fromfile', 'not the right number of months in aerosol file read (should be 12 for the moment)' &
	334	,1)
[1492]	335	ENDIF
[1150]	336
[1179]	337	! ++) Read the aerosol concentration month by month and concatenate to total variable varyear
	338	!****************************************************************************************
	339	! Get variable id
[1609]	340	CALL check_err( nf90_inq_varid(ncid, TRIM(varname), varid),"pb inq var "//TRIM(varname) )
[1179]	341
	342	! Get the variable
[1609]	343	CALL check_err( nf90_get_var(ncid, varid, varyear(:,:,:,:)),"pb get var "//TRIM(varname) )
[1179]	344
[1270]	345	! ++) Read surface pression, 12 month in one variable
[1179]	346	!****************************************************************************************
	347	! Get variable id
[1609]	348	CALL check_err( nf90_inq_varid(ncid, "ps", varid),"pb inq var ps" )
[1179]	349	! Get the variable
[1609]	350	CALL check_err( nf90_get_var(ncid, varid, psurf_glo2D),"pb get var ps" )
[1179]	351
	352	! ++) Read mass load, 12 month in one variable
	353	!****************************************************************************************
	354	! Get variable id
[1609]	355	CALL check_err( nf90_inq_varid(ncid, "load_"//TRIM(varname), varid) ,"pb inq var load_"//TRIM(varname))
[1179]	356	! Get the variable
[1609]	357	CALL check_err( nf90_get_var(ncid, varid, load_glo2D),"pb get var load_"//TRIM(varname) )
[1179]	358
	359	! ++) Read ap
	360	!****************************************************************************************
	361	! Get variable id
[1609]	362	CALL check_err( nf90_inq_varid(ncid, "ap", varid),"pb inq var ap" )
[1179]	363	! Get the variable
[1609]	364	CALL check_err( nf90_get_var(ncid, varid, pt_ap),"pb get var ap" )
[1150]	365
[1179]	366	! ++) Read b
	367	!****************************************************************************************
	368	! Get variable id
[1609]	369	CALL check_err( nf90_inq_varid(ncid, "b", varid),"pb inq var b" )
[1179]	370	! Get the variable
[1609]	371	CALL check_err( nf90_get_var(ncid, varid, pt_b),"pb get var b" )
[1150]	372
[1179]	373	! ++) Read p0 : reference pressure
	374	!****************************************************************************************
	375	! Get variable id
[1609]	376	CALL check_err( nf90_inq_varid(ncid, "p0", varid),"pb inq var p0" )
[1179]	377	! Get the variable
[1609]	378	CALL check_err( nf90_get_var(ncid, varid, p0),"pb get var p0" )
[1150]	379
[524]	380
[1179]	381	ELSE ! old file
[524]	382
[1179]	383	! ++) Read the aerosol concentration month by month and concatenate to total variable varyear
	384	!****************************************************************************************
[1270]	385	DO imth=1, 12
[1179]	386	IF (imth.EQ.1) THEN
	387	cvar=TRIM(varname)//'JAN'
	388	ELSE IF (imth.EQ.2) THEN
	389	cvar=TRIM(varname)//'FEB'
	390	ELSE IF (imth.EQ.3) THEN
	391	cvar=TRIM(varname)//'MAR'
	392	ELSE IF (imth.EQ.4) THEN
	393	cvar=TRIM(varname)//'APR'
	394	ELSE IF (imth.EQ.5) THEN
	395	cvar=TRIM(varname)//'MAY'
	396	ELSE IF (imth.EQ.6) THEN
	397	cvar=TRIM(varname)//'JUN'
	398	ELSE IF (imth.EQ.7) THEN
	399	cvar=TRIM(varname)//'JUL'
	400	ELSE IF (imth.EQ.8) THEN
	401	cvar=TRIM(varname)//'AUG'
	402	ELSE IF (imth.EQ.9) THEN
	403	cvar=TRIM(varname)//'SEP'
	404	ELSE IF (imth.EQ.10) THEN
	405	cvar=TRIM(varname)//'OCT'
	406	ELSE IF (imth.EQ.11) THEN
	407	cvar=TRIM(varname)//'NOV'
	408	ELSE IF (imth.EQ.12) THEN
	409	cvar=TRIM(varname)//'DEC'
	410	END IF
	411
	412	! Get variable id
[1609]	413	CALL check_err( nf90_inq_varid(ncid, TRIM(cvar), varid),"pb inq var "//TRIM(cvar) )
[1179]	414
	415	! Get the variable
[1609]	416	CALL check_err( nf90_get_var(ncid, varid, varmth),"pb get var "//TRIM(cvar) )
[1179]	417
	418	! Store in variable for the whole year
	419	varyear(:,:,:,imth)=varmth(:,:,:)
	420
	421	END DO
[1150]	422
[1179]	423	! Putting dummy
	424	psurf_glo2D(:,:,:) = not_valid
	425	load_glo2D(:,:,:) = not_valid
	426	pt_ap(:) = not_valid
	427	pt_b(:) = not_valid
[524]	428
[1179]	429	END IF
[524]	430
[1179]	431	! 4) Close file
	432	!****************************************************************************************
[1609]	433	CALL check_err( nf90_close(ncid),"pb in close" )
[1179]	434
[524]	435
[2346]	436	! 5) Transform the global field from 2D(nbp_lon,nbp_lat) to 1D(klon_glo)
[1179]	437	!****************************************************************************************
	438	! Test if vertical levels have to be inversed
[782]	439
[1179]	440	IF ((pt_b(1) < pt_b(klev_src)) .OR. .NOT. new_file) THEN
[1321]	441	! WRITE(lunout,*) 'Vertical axis in file ',TRIM(fname), ' needs to be inverted'
	442	! WRITE(lunout,*) 'before pt_ap = ', pt_ap
	443	! WRITE(lunout,*) 'before pt_b = ', pt_b
[1179]	444
	445	! Inverse vertical levels for varyear
[1270]	446	DO imth=1, 12
[1179]	447	varmth(:,:,:) = varyear(:,:,:,imth) ! use varmth temporarly
	448	DO k=1, klev_src
[2346]	449	DO j=1, nbp_lat
	450	DO i=1, nbp_lon
[1179]	451	varyear(i,j,k,imth) = varmth(i,j,klev_src+1-k)
	452	END DO
	453	END DO
	454	END DO
	455	END DO
	456
	457	! Inverte vertical axes for pt_ap and pt_b
	458	varktmp(:) = pt_ap(:)
	459	DO k=1, klev_src
	460	pt_ap(k) = varktmp(klev_src+1-k)
	461	END DO
[782]	462
[1179]	463	varktmp(:) = pt_b(:)
	464	DO k=1, klev_src
	465	pt_b(k) = varktmp(klev_src+1-k)
	466	END DO
	467	WRITE(lunout,*) 'after pt_ap = ', pt_ap
	468	WRITE(lunout,*) 'after pt_b = ', pt_b
[524]	469
[1179]	470	ELSE
	471	WRITE(lunout,*) 'Vertical axis in file ',TRIM(fname), ' is ok, no vertical inversion is done'
	472	WRITE(lunout,*) 'pt_ap = ', pt_ap
	473	WRITE(lunout,*) 'pt_b = ', pt_b
	474	END IF
[524]	475
[1183]	476	! - Invert latitudes if necessary
[1270]	477	DO imth=1, 12
[1183]	478	IF (invert_lat) THEN
	479
	480	! Invert latitudes for the variable
	481	varmth(:,:,:) = varyear(:,:,:,imth) ! use varmth temporarly
	482	DO k=1,klev_src
[2346]	483	DO j=1,nbp_lat
	484	DO i=1,nbp_lon
	485	varyear(i,j,k,imth) = varmth(i,nbp_lat+1-j,k)
[1183]	486	END DO
	487	END DO
	488	END DO
	489
	490	! Invert latitudes for surface pressure
	491	vartmp(:,:) = psurf_glo2D(:,:,imth)
[2346]	492	DO j=1,nbp_lat
	493	DO i=1,nbp_lon
	494	psurf_glo2D(i,j,imth)= vartmp(i,nbp_lat+1-j)
[1179]	495	END DO
	496	END DO
[1183]	497
	498	! Invert latitudes for the load
	499	vartmp(:,:) = load_glo2D(:,:,imth)
[2346]	500	DO j=1,nbp_lat
	501	DO i=1,nbp_lon
	502	load_glo2D(i,j,imth)= vartmp(i,nbp_lat+1-j)
[1183]	503	END DO
[1179]	504	END DO
[1183]	505	END IF ! invert_lat
	506
[1179]	507	! Do zonal mead at poles and distribut at whole first and last latitude
	508	DO k=1, klev_src
	509	npole=0. ! North pole, j=1
[2346]	510	spole=0. ! South pole, j=nbp_lat
	511	DO i=1,nbp_lon
[1179]	512	npole = npole + varyear(i,1,k,imth)
[2346]	513	spole = spole + varyear(i,nbp_lat,k,imth)
[1179]	514	END DO
[2346]	515	npole = npole/REAL(nbp_lon)
	516	spole = spole/REAL(nbp_lon)
[1179]	517	varyear(:,1, k,imth) = npole
[2346]	518	varyear(:,nbp_lat,k,imth) = spole
[1179]	519	END DO
	520	END DO ! imth
[1183]	521
[1270]	522	ALLOCATE(varyear_glo1D(klon_glo, klev_src, 12), stat=ierr)
[2311]	523	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 3',1)
[1179]	524
	525	! Transform from 2D to 1D field
	526	CALL grid2Dto1D_glo(varyear,varyear_glo1D)
	527	CALL grid2Dto1D_glo(psurf_glo2D,psurf_glo1D)
	528	CALL grid2Dto1D_glo(load_glo2D,load_glo1D)
[1249]	529
	530	ELSE
	531	ALLOCATE(varyear_glo1D(0,0,0))
	532	END IF ! is_mpi_root .AND. is_omp_root
	533
[1189]	534	!$OMP BARRIER
[1179]	535
	536	! 6) Distribute to all processes
	537	! Scatter global field(klon_glo) to local process domain(klon)
	538	! and distribute klev_src to all processes
	539	!****************************************************************************************
[524]	540
[1179]	541	! Distribute klev_src
	542	CALL bcast(klev_src)
[524]	543
[1179]	544	! Allocate and distribute pt_ap and pt_b
	545	IF (.NOT. ASSOCIATED(pt_ap)) THEN ! if pt_ap is allocated also pt_b is allocated
	546	ALLOCATE(pt_ap(klev_src), pt_b(klev_src), stat=ierr)
[2311]	547	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 4',1)
[1179]	548	END IF
	549	CALL bcast(pt_ap)
	550	CALL bcast(pt_b)
[524]	551
[1179]	552	! Allocate space for output pointer variable at local process
	553	IF (ASSOCIATED(pt_year)) DEALLOCATE(pt_year)
[1270]	554	ALLOCATE(pt_year(klon, klev_src, 12), stat=ierr)
[2311]	555	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 5',1)
[524]	556
[1179]	557	! Scatter global field to local domain at local process
	558	CALL scatter(varyear_glo1D, pt_year)
[1270]	559	CALL scatter(psurf_glo1D, psurf_out)
	560	CALL scatter(load_glo1D, load_out)
[524]	561
[1179]	562	! 7) Test for negative values
	563	!****************************************************************************************
	564	IF (MINVAL(pt_year) < 0.) THEN
	565	WRITE(lunout,*) 'Warning! Negative values read from file :', fname
	566	END IF
[524]	567
[1179]	568	END SUBROUTINE get_aero_fromfile
[524]	569
	570
[1609]	571	SUBROUTINE check_err(status,text)
[1179]	572	USE netcdf
[2311]	573	USE print_control_mod, ONLY: lunout
[1179]	574	IMPLICIT NONE
[524]	575
[1179]	576	INTEGER, INTENT (IN) :: status
[1609]	577	CHARACTER(len=*), INTENT (IN), OPTIONAL :: text
[524]	578
[1179]	579	IF (status /= NF90_NOERR) THEN
[1609]	580	WRITE(lunout,*) 'Error in get_aero_fromfile, netcdf error code = ',status
	581	IF (PRESENT(text)) THEN
	582	WRITE(lunout,*) 'Error in get_aero_fromfile : ',text
	583	END IF
[2311]	584	CALL abort_physic('get_aero_fromfile',trim(nf90_strerror(status)),1)
[1179]	585	END IF
[524]	586
[1179]	587	END SUBROUTINE check_err
	588
	589
	590	END MODULE readaerosol_mod

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