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limit_netcdf.F90 @ 2219

Last change on this file since 2219 was 2187, checked in by Laurent Fairhead, 10 years ago
Merged trunk changes -r2158:2186 into testing branch.
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
File size: 27.5 KB

Rev	Line
[1687]	1	!
	2	! $Id: limit_netcdf.F90 1508 2011-04-15 13:05:34Z jghattas $
	3	!-------------------------------------------------------------------------------
	4	!
	5	SUBROUTINE limit_netcdf(interbar, extrap, oldice, masque)
	6	!
	7	!-------------------------------------------------------------------------------
	8	! Author : L. Fairhead, 27/01/94
	9	!-------------------------------------------------------------------------------
	10	! Purpose: Boundary conditions files building for new model using climatologies.
	11	! Both grids have to be regular.
	12	!-------------------------------------------------------------------------------
	13	! Note: This routine is designed to work for Earth
	14	!-------------------------------------------------------------------------------
	15	! Modification history:
	16	! * 23/03/1994: Z. X. Li
	17	! * 09/1999: L. Fairhead (netcdf reading in LMDZ.3.3)
	18	! * 07/2001: P. Le Van
	19	! * 11/2009: L. Guez (ozone day & night climatos, see etat0_netcdf.F90)
	20	! * 12/2009: D. Cugnet (f77->f90, calendars, files from coupled runs)
	21	!-------------------------------------------------------------------------------
	22	USE control_mod
[1795]	23	USE indice_sol_mod
[1687]	24	#ifdef CPP_EARTH
	25	USE dimphy
	26	USE ioipsl, ONLY : ioget_year_len
[2160]	27	USE phys_state_var_mod, ONLY : pctsrf, rlon, rlat
[1687]	28	USE netcdf, ONLY : NF90_OPEN, NF90_CREATE, NF90_CLOSE, &
	29	NF90_DEF_DIM, NF90_DEF_VAR, NF90_PUT_VAR, NF90_PUT_ATT, &
	30	NF90_NOERR, NF90_NOWRITE, NF90_DOUBLE, NF90_GLOBAL, &
	31	NF90_CLOBBER, NF90_ENDDEF, NF90_UNLIMITED, NF90_FLOAT
	32	USE inter_barxy_m, only: inter_barxy
[2160]	33	use netcdf95, only: nf95_def_var, nf95_put_att, nf95_put_var
[1687]	34	#endif
	35	IMPLICIT NONE
	36	!-------------------------------------------------------------------------------
	37	! Arguments:
	38	#include "dimensions.h"
	39	#include "paramet.h"
	40	#include "iniprint.h"
	41	LOGICAL, INTENT(IN) :: interbar ! barycentric interpolation
	42	LOGICAL, INTENT(IN) :: extrap ! SST extrapolation flag
	43	LOGICAL, INTENT(IN) :: oldice ! old way ice computation
	44	REAL, DIMENSION(iip1,jjp1), INTENT(IN) :: masque ! land mask
	45	#ifndef CPP_EARTH
	46	CALL abort_gcm('limit_netcdf','Earth-specific routine, needs Earth physics',1)
	47	#else
	48	!-------------------------------------------------------------------------------
	49	! Local variables:
	50	#include "logic.h"
	51	#include "comvert.h"
	52	#include "comgeom2.h"
	53	#include "comconst.h"
	54
	55	!--- INPUT NETCDF FILES NAMES --------------------------------------------------
	56	CHARACTER(LEN=25) :: icefile, sstfile, dumstr
[2160]	57	CHARACTER(LEN=25), PARAMETER :: famipsst ='amipbc_sst_1x1.nc ', &
	58	famipsic ='amipbc_sic_1x1.nc ', &
	59	fcpldsst ='cpl_atm_sst.nc ', &
	60	fcpldsic ='cpl_atm_sic.nc ', &
	61	fhistsst ='histmth_sst.nc ', &
	62	fhistsic ='histmth_sic.nc ', &
	63	frugo ='Rugos.nc ', &
	64	falbe ='Albedo.nc ', &
	65	feraisstk='sstk.nc ', &
	66	feraici ='ci.nc '
[1687]	67	CHARACTER(LEN=10) :: varname
	68	!--- OUTPUT VARIABLES FOR NETCDF FILE ------------------------------------------
	69	REAL, DIMENSION(klon) :: fi_ice, verif
	70	REAL, DIMENSION(:,:), POINTER :: phy_rug=>NULL(), phy_ice=>NULL()
	71	REAL, DIMENSION(:,:), POINTER :: phy_sst=>NULL(), phy_alb=>NULL()
	72	REAL, DIMENSION(:,:), ALLOCATABLE :: phy_bil
	73	REAL, DIMENSION(:,:,:), ALLOCATABLE :: pctsrf_t
	74	INTEGER :: nbad
	75
	76	!--- VARIABLES FOR OUTPUT FILE WRITING -----------------------------------------
	77	INTEGER :: ierr, nid, ndim, ntim, k
	78	INTEGER, DIMENSION(2) :: dims
	79	INTEGER :: id_tim, id_SST, id_BILS, id_RUG, id_ALB
[2160]	80	INTEGER :: id_FOCE, id_FSIC, id_FTER, id_FLIC, varid_longitude, varid_latitude
[1687]	81	INTEGER :: NF90_FORMAT
	82	INTEGER :: ndays !--- Depending on the output calendar
	83
	84	!--- INITIALIZATIONS -----------------------------------------------------------
	85	#ifdef NC_DOUBLE
	86	NF90_FORMAT=NF90_DOUBLE
	87	#else
	88	NF90_FORMAT=NF90_FLOAT
	89	#endif
	90
	91	pi = 4.*ATAN(1.)
	92	rad = 6371229.
	93	daysec= 86400.
	94	omeg = 2.*pi/daysec
	95	g = 9.8
	96	kappa = 0.2857143
	97	cpp = 1004.70885
	98	dtvr = daysec/REAL(day_step)
	99	CALL inigeom
	100
	101	!--- Beware: anneeref (from gcm.def) is used to determine output time sampling
	102	ndays=ioget_year_len(anneeref)
	103
	104	!--- RUGOSITY TREATMENT --------------------------------------------------------
	105	IF (prt_level>1) WRITE(lunout,*) 'Traitement de la rugosite'
	106	varname='RUGOS'
	107	CALL get_2Dfield(frugo,varname,'RUG',interbar,ndays,phy_rug,mask=masque(1:iim,:))
	108
	109	!--- OCEAN TREATMENT -----------------------------------------------------------
	110	IF (prt_level>1) WRITE(lunout,*) 'Traitement de la glace oceanique'
	111
	112	! Input SIC file selection
	113	! Open file only to test if available
	114	IF ( NF90_OPEN(TRIM(famipsic),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	115	icefile=TRIM(famipsic)
	116	varname='sicbcs'
	117	ELSE IF( NF90_OPEN(TRIM(fcpldsic),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	118	icefile=TRIM(fcpldsic)
	119	varname='SIICECOV'
	120	ELSE IF ( NF90_OPEN(TRIM(fhistsic),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	121	icefile=TRIM(fhistsic)
	122	varname='pourc_sic'
[2160]	123	ELSE IF ( NF90_OPEN(TRIM(feraici),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	124	icefile=TRIM(feraici)
	125	varname='ci'
[1687]	126	ELSE
	127	WRITE(lunout,*) 'ERROR! No sea-ice input file was found.'
[2187]	128
	129	WRITE(lunout,*) 'One of following files must be availible : ',trim(famipsic),', ',trim(fcpldsic),', ', &
	130	trim(fhistsic), trim(feraici)
	131
[1687]	132	CALL abort_gcm('limit_netcdf','No sea-ice file was found',1)
	133	END IF
	134	ierr=NF90_CLOSE(nid)
	135	IF (prt_level>=0) WRITE(lunout,*)'Pour la glace de mer a ete choisi le fichier '//TRIM(icefile)
	136
	137	CALL get_2Dfield(icefile,varname, 'SIC',interbar,ndays,phy_ice,flag=oldice)
	138
	139	ALLOCATE(pctsrf_t(klon,nbsrf,ndays))
	140	DO k=1,ndays
	141	fi_ice=phy_ice(:,k)
	142	WHERE(fi_ice>=1.0 ) fi_ice=1.0
	143	WHERE(fi_ice<EPSFRA) fi_ice=0.0
	144	pctsrf_t(:,is_ter,k)=pctsrf(:,is_ter) ! land soil
	145	pctsrf_t(:,is_lic,k)=pctsrf(:,is_lic) ! land ice
	146	IF (icefile==trim(fcpldsic)) THEN ! SIC=pICE*(1-LIC-TER)
	147	pctsrf_t(:,is_sic,k)=fi_ice(:)*(1.-pctsrf(:,is_lic)-pctsrf(:,is_ter))
	148	ELSE IF (icefile==trim(fhistsic)) THEN ! SIC=pICE
	149	pctsrf_t(:,is_sic,k)=fi_ice(:)
	150	ELSE ! icefile==famipsic ! SIC=pICE-LIC
	151	pctsrf_t(:,is_sic,k)=fi_ice-pctsrf_t(:,is_lic,k)
	152	END IF
	153	WHERE(pctsrf_t(:,is_sic,k)<=0) pctsrf_t(:,is_sic,k)=0.
	154	WHERE(1.0-zmasq<EPSFRA)
	155	pctsrf_t(:,is_sic,k)=0.0
	156	pctsrf_t(:,is_oce,k)=0.0
	157	ELSEWHERE
	158	WHERE(pctsrf_t(:,is_sic,k)>=1.0-zmasq)
	159	pctsrf_t(:,is_sic,k)=1.0-zmasq
	160	pctsrf_t(:,is_oce,k)=0.0
	161	ELSEWHERE
	162	pctsrf_t(:,is_oce,k)=1.0-zmasq-pctsrf_t(:,is_sic,k)
	163	WHERE(pctsrf_t(:,is_oce,k)<EPSFRA)
	164	pctsrf_t(:,is_oce,k)=0.0
	165	pctsrf_t(:,is_sic,k)=1.0-zmasq
	166	END WHERE
	167	END WHERE
	168	END WHERE
	169	nbad=COUNT(pctsrf_t(:,is_oce,k)<0.0)
	170	IF(nbad>0) WRITE(lunout,*) 'pb sous maille pour nb point = ',nbad
	171	nbad=COUNT(abs(sum(pctsrf_t(:,:,k),dim=2)-1.0)>EPSFRA)
	172	IF(nbad>0) WRITE(lunout,*) 'pb sous surface pour nb points = ',nbad
	173	END DO
	174	DEALLOCATE(phy_ice)
	175
	176	!--- SST TREATMENT -------------------------------------------------------------
	177	IF (prt_level>1) WRITE(lunout,*) 'Traitement de la sst'
	178
	179	! Input SST file selection
	180	! Open file only to test if available
	181	IF ( NF90_OPEN(TRIM(famipsst),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	182	sstfile=TRIM(famipsst)
	183	varname='tosbcs'
	184	ELSE IF ( NF90_OPEN(TRIM(fcpldsst),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	185	sstfile=TRIM(fcpldsst)
	186	varname='SISUTESW'
	187	ELSE IF ( NF90_OPEN(TRIM(fhistsst),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	188	sstfile=TRIM(fhistsst)
	189	varname='tsol_oce'
[2160]	190	ELSE IF ( NF90_OPEN(TRIM(feraisstk),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
	191	sstfile=TRIM(feraisstk)
	192	varname='sstk'
[1687]	193	ELSE
	194	WRITE(lunout,*) 'ERROR! No sst input file was found.'
[2160]	195	WRITE(lunout,*) 'One of following files must be availible : ',trim(famipsst),trim(fcpldsst),trim(fhistsst),trim(feraisstk)
[1687]	196	CALL abort_gcm('limit_netcdf','No sst file was found',1)
	197	END IF
	198	ierr=NF90_CLOSE(nid)
	199	IF (prt_level>=0) WRITE(lunout,*)'Pour la temperature de mer a ete choisi un fichier '//TRIM(sstfile)
	200
	201	CALL get_2Dfield(sstfile,varname,'SST',interbar,ndays,phy_sst,flag=extrap)
	202
	203	!--- ALBEDO TREATMENT ----------------------------------------------------------
	204	IF (prt_level>1) WRITE(lunout,*) 'Traitement de l albedo'
	205	varname='ALBEDO'
	206	CALL get_2Dfield(falbe,varname,'ALB',interbar,ndays,phy_alb)
	207
	208	!--- REFERENCE GROUND HEAT FLUX TREATMENT --------------------------------------
	209	ALLOCATE(phy_bil(klon,ndays)); phy_bil=0.0
	210
	211	!--- OUTPUT FILE WRITING -------------------------------------------------------
	212	IF (prt_level>5) WRITE(lunout,*) 'Ecriture du fichier limit : debut'
	213
	214	!--- File creation
	215	ierr=NF90_CREATE("limit.nc",NF90_CLOBBER,nid)
	216	ierr=NF90_PUT_ATT(nid,NF90_GLOBAL,"title","Fichier conditions aux limites")
	217
	218	!--- Dimensions creation
	219	ierr=NF90_DEF_DIM(nid,"points_physiques",klon,ndim)
	220	ierr=NF90_DEF_DIM(nid,"time",NF90_UNLIMITED,ntim)
	221
	222	dims=(/ndim,ntim/)
	223
	224	!--- Variables creation
	225	ierr=NF90_DEF_VAR(nid,"TEMPS",NF90_FORMAT,(/ntim/),id_tim)
	226	ierr=NF90_DEF_VAR(nid,"FOCE", NF90_FORMAT,dims,id_FOCE)
	227	ierr=NF90_DEF_VAR(nid,"FSIC", NF90_FORMAT,dims,id_FSIC)
	228	ierr=NF90_DEF_VAR(nid,"FTER", NF90_FORMAT,dims,id_FTER)
	229	ierr=NF90_DEF_VAR(nid,"FLIC", NF90_FORMAT,dims,id_FLIC)
	230	ierr=NF90_DEF_VAR(nid,"SST", NF90_FORMAT,dims,id_SST)
	231	ierr=NF90_DEF_VAR(nid,"BILS", NF90_FORMAT,dims,id_BILS)
	232	ierr=NF90_DEF_VAR(nid,"ALB", NF90_FORMAT,dims,id_ALB)
	233	ierr=NF90_DEF_VAR(nid,"RUG", NF90_FORMAT,dims,id_RUG)
[2160]	234	call nf95_def_var(nid, "longitude", NF90_FLOAT, ndim, varid_longitude)
	235	call nf95_def_var(nid, "latitude", NF90_FLOAT, ndim, varid_latitude)
[1687]	236
	237	!--- Attributes creation
	238	ierr=NF90_PUT_ATT(nid,id_tim, "title","Jour dans l annee")
	239	ierr=NF90_PUT_ATT(nid,id_FOCE,"title","Fraction ocean")
	240	ierr=NF90_PUT_ATT(nid,id_FSIC,"title","Fraction glace de mer")
	241	ierr=NF90_PUT_ATT(nid,id_FTER,"title","Fraction terre")
	242	ierr=NF90_PUT_ATT(nid,id_FLIC,"title","Fraction land ice")
	243	ierr=NF90_PUT_ATT(nid,id_SST ,"title","Temperature superficielle de la mer")
	244	ierr=NF90_PUT_ATT(nid,id_BILS,"title","Reference flux de chaleur au sol")
	245	ierr=NF90_PUT_ATT(nid,id_ALB, "title","Albedo a la surface")
	246	ierr=NF90_PUT_ATT(nid,id_RUG, "title","Rugosite")
	247
[2160]	248	call nf95_put_att(nid, varid_longitude, "standard_name", "longitude")
	249	call nf95_put_att(nid, varid_longitude, "units", "degrees_east")
	250
	251	call nf95_put_att(nid, varid_latitude, "standard_name", "latitude")
	252	call nf95_put_att(nid, varid_latitude, "units", "degrees_north")
	253
[1687]	254	ierr=NF90_ENDDEF(nid)
	255
	256	!--- Variables saving
	257	ierr=NF90_PUT_VAR(nid,id_tim,(/(REAL(k),k=1,ndays)/))
	258	ierr=NF90_PUT_VAR(nid,id_FOCE,pctsrf_t(:,is_oce,:),(/1,1/),(/klon,ndays/))
	259	ierr=NF90_PUT_VAR(nid,id_FSIC,pctsrf_t(:,is_sic,:),(/1,1/),(/klon,ndays/))
	260	ierr=NF90_PUT_VAR(nid,id_FTER,pctsrf_t(:,is_ter,:),(/1,1/),(/klon,ndays/))
	261	ierr=NF90_PUT_VAR(nid,id_FLIC,pctsrf_t(:,is_lic,:),(/1,1/),(/klon,ndays/))
	262	ierr=NF90_PUT_VAR(nid,id_SST ,phy_sst(:,:),(/1,1/),(/klon,ndays/))
	263	ierr=NF90_PUT_VAR(nid,id_BILS,phy_bil(:,:),(/1,1/),(/klon,ndays/))
	264	ierr=NF90_PUT_VAR(nid,id_ALB ,phy_alb(:,:),(/1,1/),(/klon,ndays/))
	265	ierr=NF90_PUT_VAR(nid,id_RUG ,phy_rug(:,:),(/1,1/),(/klon,ndays/))
[2160]	266	call nf95_put_var(nid, varid_longitude, rlon)
	267	call nf95_put_var(nid, varid_latitude, rlat)
[1687]	268
	269	ierr=NF90_CLOSE(nid)
	270
	271	IF (prt_level>5) WRITE(lunout,*) 'Ecriture du fichier limit : fin'
	272
	273	DEALLOCATE(pctsrf_t,phy_sst,phy_bil,phy_alb,phy_rug)
	274
	275
	276	!===============================================================================
	277	!
	278	CONTAINS
	279	!
	280	!===============================================================================
	281
	282
	283	!-------------------------------------------------------------------------------
	284	!
	285	SUBROUTINE get_2Dfield(fnam, varname, mode, ibar, ndays, champo, flag, mask)
	286	!
	287	!-----------------------------------------------------------------------------
	288	! Comments:
	289	! There are two assumptions concerning the NetCDF files, that are satisfied
	290	! with files that are conforming NC convention:
	291	! 1) The last dimension of the variables used is the time record.
	292	! 2) Dimensional variables have the same names as corresponding dimensions.
	293	!-----------------------------------------------------------------------------
	294	USE netcdf, ONLY: NF90_OPEN, NF90_INQ_VARID, NF90_INQUIRE_VARIABLE, &
	295	NF90_CLOSE, NF90_INQ_DIMID, NF90_INQUIRE_DIMENSION, NF90_GET_VAR, &
	296	NF90_GET_ATT
	297	USE dimphy, ONLY : klon
	298	USE phys_state_var_mod, ONLY : pctsrf
	299	USE control_mod
[1795]	300	USE pchsp_95_m, only: pchsp_95
	301	USE pchfe_95_m, only: pchfe_95
	302	USE arth_m, only: arth
	303	USE indice_sol_mod
[1687]	304
	305	IMPLICIT NONE
	306	#include "dimensions.h"
	307	#include "paramet.h"
	308	#include "comgeom2.h"
	309	#include "iniprint.h"
	310	!-----------------------------------------------------------------------------
	311	! Arguments:
	312	CHARACTER(LEN=*), INTENT(IN) :: fnam ! NetCDF file name
	313	CHARACTER(LEN=10), INTENT(IN) :: varname ! NetCDF variable name
	314	CHARACTER(LEN=3), INTENT(IN) :: mode ! RUG, SIC, SST or ALB
	315	LOGICAL, INTENT(IN) :: ibar ! interp on pressure levels
	316	INTEGER, INTENT(IN) :: ndays ! current year number of days
	317	REAL, POINTER, DIMENSION(:, :) :: champo ! output field = f(t)
	318	LOGICAL, OPTIONAL, INTENT(IN) :: flag ! extrapol. (SST) old ice (SIC)
	319	REAL, OPTIONAL, DIMENSION(iim, jjp1), INTENT(IN) :: mask
	320	!------------------------------------------------------------------------------
	321	! Local variables:
	322	!--- NetCDF
	323	INTEGER :: ncid, varid ! NetCDF identifiers
	324	CHARACTER(LEN=30) :: dnam ! dimension name
	325	!--- dimensions
	326	INTEGER, DIMENSION(4) :: dids ! NetCDF dimensions identifiers
	327	REAL, ALLOCATABLE, DIMENSION(:) :: dlon_ini ! initial longitudes vector
	328	REAL, ALLOCATABLE, DIMENSION(:) :: dlat_ini ! initial latitudes vector
	329	REAL, POINTER, DIMENSION(:) :: dlon, dlat ! reordered lon/lat vectors
	330	!--- fields
	331	INTEGER :: imdep, jmdep, lmdep ! dimensions of 'champ'
	332	REAL, ALLOCATABLE, DIMENSION(:, :) :: champ ! wanted field on initial grid
	333	REAL, ALLOCATABLE, DIMENSION(:) :: yder, timeyear
	334	REAL, DIMENSION(iim, jjp1) :: champint ! interpolated field
	335	REAL, ALLOCATABLE, DIMENSION(:, :, :) :: champtime
	336	REAL, ALLOCATABLE, DIMENSION(:, :, :) :: champan
	337	!--- input files
	338	CHARACTER(LEN=20) :: cal_in ! calendar
	339	CHARACTER(LEN=20) :: unit_sic ! attribute unit in sea-ice file
	340	INTEGER :: ndays_in ! number of days
	341	!--- misc
	342	INTEGER :: i, j, k, l ! loop counters
	343	REAL, ALLOCATABLE, DIMENSION(:, :) :: work ! used for extrapolation
	344	CHARACTER(LEN=25) :: title ! for messages
	345	LOGICAL :: extrp ! flag for extrapolation
	346	LOGICAL :: oldice ! flag for old way ice computation
	347	REAL :: chmin, chmax
	348	INTEGER ierr
	349	integer n_extrap ! number of extrapolated points
	350	logical skip
	351
	352	!------------------------------------------------------------------------------
	353	!---Variables depending on keyword 'mode' -------------------------------------
	354	NULLIFY(champo)
	355
	356	SELECT CASE(mode)
	357	CASE('RUG'); title='Rugosite'
	358	CASE('SIC'); title='Sea-ice'
	359	CASE('SST'); title='SST'
	360	CASE('ALB'); title='Albedo'
	361	END SELECT
	362
	363
	364	extrp=.FALSE.
	365	oldice=.FALSE.
	366	IF ( PRESENT(flag) ) THEN
	367	IF ( flag .AND. mode=='SST' ) extrp=.TRUE.
	368	IF ( flag .AND. mode=='SIC' ) oldice=.TRUE.
	369	END IF
	370
	371	!--- GETTING SOME DIMENSIONAL VARIABLES FROM FILE -----------------------------
	372	IF (prt_level>5) WRITE(lunout,*) ' Now reading file : ',fnam
	373	ierr=NF90_OPEN(fnam, NF90_NOWRITE, ncid); CALL ncerr(ierr, fnam)
	374	ierr=NF90_INQ_VARID(ncid, trim(varname), varid); CALL ncerr(ierr, fnam)
	375	ierr=NF90_INQUIRE_VARIABLE(ncid, varid, dimids=dids); CALL ncerr(ierr, fnam)
	376
	377	!--- Read unit for sea-ice variable only
	378	IF (mode=='SIC') THEN
	379	ierr=NF90_GET_ATT(ncid, varid, 'units', unit_sic)
	380	IF(ierr/=NF90_NOERR) THEN
	381	IF (prt_level>5) WRITE(lunout,*) 'No unit was given in sea-ice file. Take percentage as default value'
	382	unit_sic='X'
	383	ELSE
	384	IF (prt_level>5) WRITE(lunout,*) ' Sea-ice cover has unit=',unit_sic
	385	END IF
	386	END IF
	387
	388	!--- Longitude
	389	ierr=NF90_INQUIRE_DIMENSION(ncid, dids(1), name=dnam, len=imdep)
	390	CALL ncerr(ierr, fnam); ALLOCATE(dlon_ini(imdep), dlon(imdep))
	391	ierr=NF90_INQ_VARID(ncid, dnam, varid); CALL ncerr(ierr, fnam)
	392	ierr=NF90_GET_VAR(ncid, varid, dlon_ini); CALL ncerr(ierr, fnam)
	393	IF (prt_level>5) WRITE(lunout, *) 'variable ', dnam, 'dimension ', imdep
	394
	395	!--- Latitude
	396	ierr=NF90_INQUIRE_DIMENSION(ncid, dids(2), name=dnam, len=jmdep)
	397	CALL ncerr(ierr, fnam); ALLOCATE(dlat_ini(jmdep), dlat(jmdep))
	398	ierr=NF90_INQ_VARID(ncid, dnam, varid); CALL ncerr(ierr, fnam)
	399	ierr=NF90_GET_VAR(ncid, varid, dlat_ini); CALL ncerr(ierr, fnam)
	400	IF (prt_level>5) WRITE(lunout, *) 'variable ', dnam, 'dimension ', jmdep
	401
	402	!--- Time (variable is not needed - it is rebuilt - but calendar is)
	403	ierr=NF90_INQUIRE_DIMENSION(ncid, dids(3), name=dnam, len=lmdep)
	404	CALL ncerr(ierr, fnam); ALLOCATE(timeyear(lmdep))
	405	ierr=NF90_INQ_VARID(ncid, dnam, varid); CALL ncerr(ierr, fnam)
	406	cal_in=' '
	407	ierr=NF90_GET_ATT(ncid, varid, 'calendar', cal_in)
	408	IF(ierr/=NF90_NOERR) THEN
	409	SELECT CASE(mode)
	410	CASE('RUG', 'ALB'); cal_in='360d'
	411	CASE('SIC', 'SST'); cal_in='gregorian'
	412	END SELECT
	413	IF (prt_level>5) WRITE(lunout, *)'ATTENTION: variable "time" sans attribut "calendrier" ' &
	414	// 'dans '//TRIM(fnam)//'. On choisit la valeur par defaut.'
	415	END IF
	416	IF (prt_level>5) WRITE(lunout, *) 'variable ', dnam, 'dimension ', lmdep, 'calendrier ', &
	417	cal_in
	418
	419
	420	!--- CONSTRUCTING THE INPUT TIME VECTOR FOR INTERPOLATION --------------------
	421	!--- Determining input file number of days, depending on calendar
	422	ndays_in=year_len(anneeref, cal_in)
	423
	424	!--- Time vector reconstruction (time vector from file is not trusted)
	425	!--- If input records are not monthly, time sampling has to be constant !
	426	timeyear=mid_months(anneeref, cal_in, lmdep)
	427	IF (lmdep /= 12) WRITE(lunout,*) 'Note : les fichiers de ', TRIM(mode), &
	428	' ne comportent pas 12, mais ', lmdep, ' enregistrements.'
	429
	430	!--- GETTING THE FIELD AND INTERPOLATING IT ----------------------------------
	431	ALLOCATE(champ(imdep, jmdep), champtime(iim, jjp1, lmdep))
	432	IF(extrp) ALLOCATE(work(imdep, jmdep))
	433
	434	IF (prt_level>5) WRITE(lunout, *)
	435	IF (prt_level>5) WRITE(lunout,*)'LECTURE ET INTERPOLATION HORIZ. DE ', lmdep, ' CHAMPS.'
	436	ierr=NF90_INQ_VARID(ncid, varname, varid); CALL ncerr(ierr, fnam)
	437	DO l=1, lmdep
	438	ierr=NF90_GET_VAR(ncid, varid, champ, (/1, 1, l/), (/imdep, jmdep, 1/))
	439	CALL ncerr(ierr, fnam)
	440	CALL conf_dat2d(title, imdep, jmdep, dlon_ini, dlat_ini, dlon, dlat, &
	441	champ, ibar)
	442
	443	IF (extrp) CALL extrapol(champ, imdep, jmdep, 999999., .TRUE., .TRUE., 2, &
	444	work)
	445
	446	IF(ibar .AND. .NOT.oldice) THEN
	447	IF(l==1 .AND. prt_level>5) THEN
	448	WRITE(lunout, *) '-------------------------------------------------------------------------'
	449	WRITE(lunout, *) 'Utilisation de l''interpolation barycentrique pour ',TRIM(title),' $$$'
	450	WRITE(lunout, *) '-------------------------------------------------------------------------'
	451	END IF
	452	IF(mode=='RUG') champ=LOG(champ)
	453	CALL inter_barxy(dlon, dlat(:jmdep-1), champ, rlonu(:iim), &
	454	rlatv, champint)
	455	IF(mode=='RUG') THEN
	456	champint=EXP(champint)
	457	WHERE(NINT(mask)/=1) champint=0.001
	458	END IF
	459	ELSE
	460	SELECT CASE(mode)
	461	CASE('RUG'); CALL rugosite(imdep, jmdep, dlon, dlat, champ, &
	462	iim, jjp1, rlonv, rlatu, champint, mask)
	463	CASE('SIC'); CALL sea_ice (imdep, jmdep, dlon, dlat, champ, &
	464	iim, jjp1, rlonv, rlatu, champint)
	465	CASE('SST', 'ALB'); CALL grille_m(imdep, jmdep, dlon, dlat, champ, &
	466	iim, jjp1, rlonv, rlatu, champint)
	467	END SELECT
	468	END IF
	469	champtime(:, :, l)=champint
	470	END DO
	471	ierr=NF90_CLOSE(ncid); CALL ncerr(ierr, fnam)
	472
	473	DEALLOCATE(dlon_ini, dlat_ini, dlon, dlat, champ)
	474	IF(extrp) DEALLOCATE(work)
	475
	476	!--- TIME INTERPOLATION ------------------------------------------------------
	477	IF (prt_level>5) THEN
	478	WRITE(lunout, *)
	479	WRITE(lunout, *)'INTERPOLATION TEMPORELLE.'
	480	WRITE(lunout, *)' Vecteur temps en entree: ', timeyear
	481	WRITE(lunout, *)' Vecteur temps en sortie de 0 a ', ndays
	482	END IF
	483
	484	ALLOCATE(yder(lmdep), champan(iip1, jjp1, ndays))
	485	skip = .false.
	486	n_extrap = 0
	487	DO j=1, jjp1
	488	DO i=1, iim
	489	yder = pchsp_95(timeyear, champtime(i, j, :), ibeg=2, iend=2, &
	490	vc_beg=0., vc_end=0.)
	491	CALL pchfe_95(timeyear, champtime(i, j, :), yder, skip, &
	492	arth(0., real(ndays_in) / ndays, ndays), champan(i, j, :), ierr)
	493	if (ierr < 0) stop 1
	494	n_extrap = n_extrap + ierr
	495	END DO
	496	END DO
	497	if (n_extrap /= 0) then
	498	WRITE(lunout,*) "get_2Dfield pchfe_95: n_extrap = ", n_extrap
	499	end if
	500	champan(iip1, :, :)=champan(1, :, :)
	501	DEALLOCATE(yder, champtime, timeyear)
	502
	503	!--- Checking the result
	504	DO j=1, jjp1
	505	CALL minmax(iip1, champan(1, j, 10), chmin, chmax)
	506	IF (prt_level>5) WRITE(lunout, *)' ',TRIM(title),' au temps 10 ', chmin, chmax, j
	507	END DO
	508
	509	!--- SPECIAL FILTER FOR SST: SST>271.38 --------------------------------------
	510	IF(mode=='SST') THEN
	511	IF (prt_level>5) WRITE(lunout, *) 'Filtrage de la SST: SST >= 271.38'
	512	WHERE(champan<271.38) champan=271.38
	513	END IF
	514
	515	!--- SPECIAL FILTER FOR SIC: 0.0<SIC<1.0 -------------------------------------
	516	IF(mode=='SIC') THEN
	517	IF (prt_level>5) WRITE(lunout, *) 'Filtrage de la SIC: 0.0 < Sea-ice < 1.0'
	518
	519	IF (unit_sic=='1') THEN
	520	! Nothing to be done for sea-ice field is already in fraction of 1
	521	! This is the case for sea-ice in file cpl_atm_sic.nc
	522	IF (prt_level>5) WRITE(lunout,*) 'Sea-ice field already in fraction of 1'
	523	ELSE
	524	! Convert sea ice from percentage to fraction of 1
	525	IF (prt_level>5) WRITE(lunout,*) 'Transformt sea-ice field from percentage to fraction of 1.'
	526	champan(:, :, :)=champan(:, :, :)/100.
	527	END IF
	528
	529	champan(iip1, :, :)=champan(1, :, :)
	530	WHERE(champan>1.0) champan=1.0
	531	WHERE(champan<0.0) champan=0.0
	532	END IF
	533
	534	!--- DYNAMICAL TO PHYSICAL GRID ----------------------------------------------
	535	ALLOCATE(champo(klon, ndays))
	536	DO k=1, ndays
	537	CALL gr_dyn_fi(1, iip1, jjp1, klon, champan(1, 1, k), champo(1, k))
	538	END DO
	539	DEALLOCATE(champan)
	540
	541	END SUBROUTINE get_2Dfield
	542	!
	543	!-------------------------------------------------------------------------------
	544
	545
	546
	547	!-------------------------------------------------------------------------------
	548	!
	549	FUNCTION year_len(y,cal_in)
	550	!
	551	!-------------------------------------------------------------------------------
	552	USE ioipsl, ONLY : ioget_calendar,ioconf_calendar,lock_calendar,ioget_year_len
	553	IMPLICIT NONE
	554	!-------------------------------------------------------------------------------
	555	! Arguments:
	556	INTEGER :: year_len
	557	INTEGER, INTENT(IN) :: y
	558	CHARACTER(LEN=*), INTENT(IN) :: cal_in
	559	!-------------------------------------------------------------------------------
	560	! Local variables:
	561	CHARACTER(LEN=20) :: cal_out ! calendar (for outputs)
	562	!-------------------------------------------------------------------------------
	563	!--- Getting the input calendar to reset at the end of the function
	564	CALL ioget_calendar(cal_out)
	565
	566	!--- Unlocking calendar and setting it to wanted one
	567	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_in))
	568
	569	!--- Getting the number of days in this year
	570	year_len=ioget_year_len(y)
	571
	572	!--- Back to original calendar
	573	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_out))
	574
	575	END FUNCTION year_len
	576	!
	577	!-------------------------------------------------------------------------------
	578
	579
	580	!-------------------------------------------------------------------------------
	581	!
	582	FUNCTION mid_months(y,cal_in,nm)
	583	!
	584	!-------------------------------------------------------------------------------
	585	USE ioipsl, ONLY : ioget_calendar,ioconf_calendar,lock_calendar,ioget_mon_len
	586	IMPLICIT NONE
	587	!-------------------------------------------------------------------------------
	588	! Arguments:
	589	INTEGER, INTENT(IN) :: y ! year
	590	CHARACTER(LEN=*), INTENT(IN) :: cal_in ! calendar
	591	INTEGER, INTENT(IN) :: nm ! months/year number
	592	REAL, DIMENSION(nm) :: mid_months ! mid-month times
	593	!-------------------------------------------------------------------------------
	594	! Local variables:
	595	CHARACTER(LEN=99) :: mess ! error message
	596	CHARACTER(LEN=20) :: cal_out ! calendar (for outputs)
	597	INTEGER, DIMENSION(nm) :: mnth ! months lengths (days)
	598	INTEGER :: m ! months counter
	599	INTEGER :: nd ! number of days
	600	!-------------------------------------------------------------------------------
	601	nd=year_len(y,cal_in)
	602
	603	IF(nm==12) THEN
	604
	605	!--- Getting the input calendar to reset at the end of the function
	606	CALL ioget_calendar(cal_out)
	607
	608	!--- Unlocking calendar and setting it to wanted one
	609	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_in))
	610
	611	!--- Getting the length of each month
	612	DO m=1,nm; mnth(m)=ioget_mon_len(y,m); END DO
	613
	614	!--- Back to original calendar
	615	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_out))
	616
	617	ELSE IF(MODULO(nd,nm)/=0) THEN
	618	WRITE(mess,'(a,i3,a,i3,a)')'Unconsistent calendar: ',nd,' days/year, but ',&
	619	nm,' months/year. Months number should divide days number.'
	620	CALL abort_gcm('mid_months',TRIM(mess),1)
	621
	622	ELSE
	623	mnth=(/(m,m=1,nm,nd/nm)/)
	624	END IF
	625
	626	!--- Mid-months times
	627	mid_months(1)=0.5*REAL(mnth(1))
	628	DO k=2,nm
	629	mid_months(k)=mid_months(k-1)+0.5*REAL(mnth(k-1)+mnth(k))
	630	END DO
	631
	632	END FUNCTION mid_months
	633	!
	634	!-------------------------------------------------------------------------------
	635
	636
	637	!-------------------------------------------------------------------------------
	638	!
	639	SUBROUTINE ncerr(ncres,fnam)
	640	!
	641	!-------------------------------------------------------------------------------
	642	! Purpose: NetCDF errors handling.
	643	!-------------------------------------------------------------------------------
	644	USE netcdf, ONLY : NF90_NOERR, NF90_STRERROR
	645	IMPLICIT NONE
	646	!-------------------------------------------------------------------------------
	647	! Arguments:
	648	INTEGER, INTENT(IN) :: ncres
	649	CHARACTER(LEN=*), INTENT(IN) :: fnam
	650	!-------------------------------------------------------------------------------
	651	#include "iniprint.h"
	652	IF(ncres/=NF90_NOERR) THEN
	653	WRITE(lunout,*)'Problem with file '//TRIM(fnam)//' in routine limit_netcdf.'
	654	CALL abort_gcm('limit_netcdf',NF90_STRERROR(ncres),1)
	655	END IF
	656
	657	END SUBROUTINE ncerr
	658	!
	659	!-------------------------------------------------------------------------------
	660
	661	#endif
	662	! of #ifdef CPP_EARTH
	663
	664	END SUBROUTINE limit_netcdf

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