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limit_netcdf.F90 @ 1476

Last change on this file since 1476 was 1476, checked in by jghattas, 14 years ago

Bug correction for ce0l in dyn3dpar :

added missing MPI_FINALIZE
removed STOP before end of program

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 25.5 KB

Line
1	!
2	! $Id: limit_netcdf.F90 1476 2011-01-25 11:12:55Z 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	#ifdef CPP_EARTH
23	USE dimphy
24	USE ioipsl, ONLY : ioget_year_len
25	USE phys_state_var_mod, ONLY : pctsrf
26	USE netcdf, ONLY : NF90_OPEN, NF90_CREATE, NF90_CLOSE, &
27	NF90_DEF_DIM, NF90_DEF_VAR, NF90_PUT_VAR, NF90_PUT_ATT, &
28	NF90_NOERR, NF90_NOWRITE, NF90_DOUBLE, NF90_GLOBAL, &
29	NF90_CLOBBER, NF90_ENDDEF, NF90_UNLIMITED
30	USE inter_barxy_m, only: inter_barxy
31	#endif
32	IMPLICIT NONE
33	!-------------------------------------------------------------------------------
34	! Arguments:
35	#include "dimensions.h"
36	#include "paramet.h"
37	#include "iniprint.h"
38	LOGICAL, INTENT(IN) :: interbar ! barycentric interpolation
39	LOGICAL, INTENT(IN) :: extrap ! SST extrapolation flag
40	LOGICAL, INTENT(IN) :: oldice ! old way ice computation
41	REAL, DIMENSION(iip1,jjp1), INTENT(IN) :: masque ! land mask
42	#ifndef CPP_EARTH
43	WRITE(lunout,*)'limit_netcdf: Earth-specific routine, needs Earth physics'
44	#else
45	!-------------------------------------------------------------------------------
46	! Local variables:
47	#include "control.h"
48	#include "logic.h"
49	#include "comvert.h"
50	#include "comgeom2.h"
51	#include "comconst.h"
52	#include "indicesol.h"
53
54	!--- For fractionary sub-cell use (old coding used soil index: 0,1,2,3) --------
55	LOGICAL, PARAMETER :: fracterre=.TRUE.
56
57	!--- INPUT NETCDF FILES NAMES --------------------------------------------------
58	CHARACTER(LEN=25) :: icefile, sstfile, dumstr
59	CHARACTER(LEN=25), PARAMETER :: famipsst='amipbc_sst_1x1.nc ', &
60	famipsic='amipbc_sic_1x1.nc ', &
61	fclimsst='amipbc_sst_1x1_clim.nc ', &
62	fclimsic='amipbc_sic_1x1_clim.nc ', &
63	fcpldsst='cpl_atm_sst.nc ', &
64	fcpldsic='cpl_atm_sic.nc ', &
65	frugo ='Rugos.nc ', &
66	falbe ='Albedo.nc '
67
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
80	INTEGER :: id_FOCE, id_FSIC, id_FTER, id_FLIC
81	INTEGER :: NF90_FORMAT
82	LOGICAL :: lCPL !--- T: IPCC-IPSL cpl model output files
83	INTEGER :: ndays !--- Depending on the output calendar
84
85	!--- INITIALIZATIONS -----------------------------------------------------------
86	#ifdef NC_DOUBLE
87	NF90_FORMAT=NF90_DOUBLE
88	#else
89	NF90_FORMAT=NF90_FLOAT
90	#endif
91
92	pi = 4.*ATAN(1.)
93	rad = 6371229.
94	daysec= 86400.
95	omeg = 2.*pi/daysec
96	g = 9.8
97	kappa = 0.2857143
98	cpp = 1004.70885
99	dtvr = daysec/FLOAT(day_step)
100	CALL inigeom
101
102	!--- Beware: anneeref (from gcm.def) is used to determine output time sampling
103	ndays=ioget_year_len(anneeref)
104
105	!--- RUGOSITY TREATMENT --------------------------------------------------------
106	WRITE(lunout,*) 'Traitement de la rugosite'
107	CALL get_2Dfield(frugo,'RUG',interbar,ndays,phy_rug,mask=masque(1:iim,:))
108
109	!--- OCEAN TREATMENT -----------------------------------------------------------
110	PRINT*, 'Traitement de la glace oceanique' ; icefile=''; lCPL=.FALSE.
111
112	! Input SIC file selection
113	icefile='fake'
114	IF(NF90_OPEN(famipsic,NF90_NOWRITE,nid)==NF90_NOERR) icefile=TRIM(famipsic)
115	IF(NF90_OPEN(fclimsic,NF90_NOWRITE,nid)==NF90_NOERR) icefile=TRIM(fclimsic)
116	IF(NF90_OPEN(fcpldsic,NF90_NOWRITE,nid)==NF90_NOERR) icefile=TRIM(fcpldsic)
117	SELECT CASE(icefile)
118	CASE(famipsic); dumstr='Amip.'
119	CASE(fclimsic); dumstr='Amip climatologique.'
120	CASE(fcpldsic); dumstr='de sortie du modele couplé IPSL/IPCC.';lCPL=.TRUE.
121	CASE('fake'); CALL abort_gcm('limit_netcdf','Fichier SIC non reconnu.',1)
122	END SELECT
123	ierr=NF90_CLOSE(nid)
124	WRITE(lunout,*)'Pour la glace de mer a ete choisi un fichier '//TRIM(dumstr)
125
126	CALL get_2Dfield(icefile,'SIC',interbar,ndays,phy_ice,flag=oldice,lCPL=lCPL)
127
128	ALLOCATE(pctsrf_t(klon,nbsrf,ndays))
129	DO k=1,ndays
130	fi_ice=phy_ice(:,k)
131	WHERE(fi_ice>=1.0 ) fi_ice=1.0
132	WHERE(fi_ice<EPSFRA) fi_ice=0.0
133	IF(fracterre) THEN
134	pctsrf_t(:,is_ter,k)=pctsrf(:,is_ter) ! land soil
135	pctsrf_t(:,is_lic,k)=pctsrf(:,is_lic) ! land ice
136	IF(lCPL) THEN ! SIC=pICE*(1-LIC-TER)
137	pctsrf_t(:,is_sic,k)=fi_ice*(1-pctsrf(:,is_lic)-pctsrf(:,is_ter))
138	ELSE ! SIC=pICE-LIC
139	pctsrf_t(:,is_sic,k)=fi_ice-pctsrf_t(:,is_lic,k)
140	END IF
141	WHERE(pctsrf_t(:,is_sic,k)<=0) pctsrf_t(:,is_sic,k)=0.
142	WHERE(1.0-zmasq<EPSFRA)
143	pctsrf_t(:,is_sic,k)=0.0
144	pctsrf_t(:,is_oce,k)=0.0
145	ELSEWHERE
146	WHERE(pctsrf_t(:,is_sic,k)>=1.0-zmasq)
147	pctsrf_t(:,is_sic,k)=1.0-zmasq
148	pctsrf_t(:,is_oce,k)=0.0
149	ELSEWHERE
150	pctsrf_t(:,is_oce,k)=1.0-zmasq-pctsrf_t(:,is_sic,k)
151	WHERE(pctsrf_t(:,is_oce,k)<EPSFRA)
152	pctsrf_t(:,is_oce,k)=0.0
153	pctsrf_t(:,is_sic,k)=1.0-zmasq
154	END WHERE
155	END WHERE
156	END WHERE
157	nbad=COUNT(pctsrf_t(:,is_oce,k)<0.0)
158	IF(nbad>0) WRITE(lunout,*) 'pb sous maille pour nb point = ',nbad
159	nbad=COUNT(abs(sum(pctsrf_t(:,:,k),dim=2)-1.0)>EPSFRA)
160	IF(nbad>0) WRITE(lunout,*) 'pb sous surface pour nb points = ',nbad
161	ELSE
162	pctsrf_t(:,is_ter,k)=pctsrf(:,is_ter)
163	WHERE(NINT(pctsrf(:,is_ter))==1)
164	pctsrf_t(:,is_sic,k)=0.
165	pctsrf_t(:,is_oce,k)=0.
166	WHERE(fi_ice>=1.e-5)
167	pctsrf_t(:,is_lic,k)=fi_ice
168	pctsrf_t(:,is_ter,k)=pctsrf_t(:,is_ter,k)-pctsrf_t(:,is_lic,k)
169	ELSEWHERE
170	pctsrf_t(:,is_lic,k)=0.0
171	END WHERE
172	ELSEWHERE
173	pctsrf_t(:,is_lic,k) = 0.0
174	WHERE(fi_ice>=1.e-5)
175	pctsrf_t(:,is_ter,k)=0.0
176	pctsrf_t(:,is_sic,k)=fi_ice
177	pctsrf_t(:,is_oce,k)=1.0-pctsrf_t(:,is_sic,k)
178	ELSEWHERE
179	pctsrf_t(:,is_sic,k)=0.0
180	pctsrf_t(:,is_oce,k)=1.0
181	END WHERE
182	END WHERE
183	verif=sum(pctsrf_t(:,:,k),dim=2)
184	nbad=COUNT(verif<1.0-1.e-5.OR.verif>1.0+1.e-5)
185	IF(nbad>0) WRITE(lunout,*) 'pb sous maille pour nb point = ',nbad
186	END IF
187	END DO
188	DEALLOCATE(phy_ice)
189
190	!--- SST TREATMENT -------------------------------------------------------------
191	WRITE(lunout,*) 'Traitement de la sst' ; sstfile=''; lCPL=.FALSE.
192
193	! Input SST file selection
194	sstfile='fake'
195	IF(NF90_OPEN(famipsst,NF90_NOWRITE,nid)==NF90_NOERR) sstfile=TRIM(famipsst)
196	IF(NF90_OPEN(fclimsst,NF90_NOWRITE,nid)==NF90_NOERR) sstfile=TRIM(fclimsst)
197	IF(NF90_OPEN(fcpldsst,NF90_NOWRITE,nid)==NF90_NOERR) sstfile=TRIM(fcpldsst)
198	SELECT CASE(icefile)
199	CASE(famipsic); dumstr='Amip.'
200	CASE(fclimsic); dumstr='Amip climatologique.'
201	CASE(fcpldsic); dumstr='de sortie du modele couplé IPSL/IPCC.';lCPL=.TRUE.
202	CASE('fake'); CALL abort_gcm('limit_netcdf','Fichier SST non reconnu',1)
203	END SELECT
204	ierr=NF90_CLOSE(nid)
205	WRITE(lunout,*)'Pour la temperature de mer a ete choisi un fichier '//TRIM(dumstr)
206
207	CALL get_2Dfield(trim(sstfile),'SST',interbar,ndays,phy_sst,flag=extrap)
208
209	!--- ALBEDO TREATMENT ----------------------------------------------------------
210	WRITE(lunout,*) 'Traitement de l albedo'
211	CALL get_2Dfield(falbe,'ALB',interbar,ndays,phy_alb)
212
213	!--- REFERENCE GROUND HEAT FLUX TREATMENT --------------------------------------
214	ALLOCATE(phy_bil(klon,ndays)); phy_bil=0.0
215
216	!--- OUTPUT FILE WRITING -------------------------------------------------------
217	WRITE(lunout,*) 'Ecriture du fichier limit'
218
219	!--- File creation
220	ierr=NF90_CREATE("limit.nc",NF90_CLOBBER,nid)
221	ierr=NF90_PUT_ATT(nid,NF90_GLOBAL,"title","Fichier conditions aux limites")
222
223	!--- Dimensions creation
224	ierr=NF90_DEF_DIM(nid,"points_physiques",klon,ndim)
225	ierr=NF90_DEF_DIM(nid,"time",NF90_UNLIMITED,ntim)
226
227	dims=(/ndim,ntim/)
228
229	!--- Variables creation
230	ierr=NF90_DEF_VAR(nid,"TEMPS",NF90_FORMAT,(/ntim/),id_tim)
231	ierr=NF90_DEF_VAR(nid,"FOCE", NF90_FORMAT,dims,id_FOCE)
232	ierr=NF90_DEF_VAR(nid,"FSIC", NF90_FORMAT,dims,id_FSIC)
233	ierr=NF90_DEF_VAR(nid,"FTER", NF90_FORMAT,dims,id_FTER)
234	ierr=NF90_DEF_VAR(nid,"FLIC", NF90_FORMAT,dims,id_FLIC)
235	ierr=NF90_DEF_VAR(nid,"SST", NF90_FORMAT,dims,id_SST)
236	ierr=NF90_DEF_VAR(nid,"BILS", NF90_FORMAT,dims,id_BILS)
237	ierr=NF90_DEF_VAR(nid,"ALB", NF90_FORMAT,dims,id_ALB)
238	ierr=NF90_DEF_VAR(nid,"RUG", NF90_FORMAT,dims,id_RUG)
239
240	!--- Attributes creation
241	ierr=NF90_PUT_ATT(nid,id_tim, "title","Jour dans l annee")
242	ierr=NF90_PUT_ATT(nid,id_FOCE,"title","Fraction ocean")
243	ierr=NF90_PUT_ATT(nid,id_FSIC,"title","Fraction glace de mer")
244	ierr=NF90_PUT_ATT(nid,id_FTER,"title","Fraction terre")
245	ierr=NF90_PUT_ATT(nid,id_FLIC,"title","Fraction land ice")
246	ierr=NF90_PUT_ATT(nid,id_SST ,"title","Temperature superficielle de la mer")
247	ierr=NF90_PUT_ATT(nid,id_BILS,"title","Reference flux de chaleur au sol")
248	ierr=NF90_PUT_ATT(nid,id_ALB, "title","Albedo a la surface")
249	ierr=NF90_PUT_ATT(nid,id_RUG, "title","Rugosite")
250
251	ierr=NF90_ENDDEF(nid)
252
253	!--- Variables saving
254	ierr=NF90_PUT_VAR(nid,id_tim,(/(REAL(k),k=1,ndays)/))
255	ierr=NF90_PUT_VAR(nid,id_FOCE,pctsrf_t(:,is_oce,:),(/1,1/),(/klon,ndays/))
256	ierr=NF90_PUT_VAR(nid,id_FSIC,pctsrf_t(:,is_sic,:),(/1,1/),(/klon,ndays/))
257	ierr=NF90_PUT_VAR(nid,id_FTER,pctsrf_t(:,is_ter,:),(/1,1/),(/klon,ndays/))
258	ierr=NF90_PUT_VAR(nid,id_FLIC,pctsrf_t(:,is_lic,:),(/1,1/),(/klon,ndays/))
259	ierr=NF90_PUT_VAR(nid,id_SST ,phy_sst(:,:),(/1,1/),(/klon,ndays/))
260	ierr=NF90_PUT_VAR(nid,id_BILS,phy_bil(:,:),(/1,1/),(/klon,ndays/))
261	ierr=NF90_PUT_VAR(nid,id_ALB ,phy_alb(:,:),(/1,1/),(/klon,ndays/))
262	ierr=NF90_PUT_VAR(nid,id_RUG ,phy_rug(:,:),(/1,1/),(/klon,ndays/))
263
264	ierr=NF90_CLOSE(nid)
265
266	DEALLOCATE(pctsrf_t,phy_sst,phy_bil,phy_alb,phy_rug)
267	#endif
268	! of #ifdef CPP_EARTH
269
270
271	!===============================================================================
272	!
273	CONTAINS
274	!
275	!===============================================================================
276
277
278	!-------------------------------------------------------------------------------
279	!
280	SUBROUTINE get_2Dfield(fnam, mode, ibar, ndays, champo, flag, mask, lCPL)
281	!
282	!-------------------------------------------------------------------------------
283	! Comments:
284	! There are two assumptions concerning the NetCDF files, that are satisfied
285	! with files that are conforming NC convention:
286	! 1) The last dimension of the variables used is the time record.
287	! 2) Dimensional variables have the same names as corresponding dimensions.
288	!-------------------------------------------------------------------------------
289	USE netcdf, ONLY : NF90_OPEN, NF90_INQ_VARID, NF90_INQUIRE_VARIABLE, &
290	NF90_CLOSE, NF90_INQ_DIMID, NF90_INQUIRE_DIMENSION, &
291	NF90_GET_VAR, NF90_GET_ATT
292	USE dimphy, ONLY : klon
293	USE phys_state_var_mod, ONLY : pctsrf
294	IMPLICIT NONE
295	#include "dimensions.h"
296	#include "paramet.h"
297	#include "comgeom2.h"
298	#include "control.h"
299	#include "indicesol.h"
300	#include "iniprint.h"
301	!-------------------------------------------------------------------------------
302	! Arguments:
303	CHARACTER(LEN=*), INTENT(IN) :: fnam ! NetCDF file name
304	CHARACTER(LEN=3), INTENT(IN) :: mode ! RUG, SIC, SST or ALB
305	LOGICAL, INTENT(IN) :: ibar ! interp on pressure levels
306	INTEGER, INTENT(IN) :: ndays ! current year number of days
307	REAL, POINTER, DIMENSION(:,:) :: champo ! output field = f(t)
308	LOGICAL, OPTIONAL, INTENT(IN) :: flag ! extrapol. (SST) old ice (SIC)
309	REAL, OPTIONAL, DIMENSION(iim,jjp1), INTENT(IN) :: mask
310	LOGICAL, OPTIONAL, INTENT(IN) :: lCPL ! Coupled model flag (for ICE)
311	!-------------------------------------------------------------------------------
312	! Local variables:
313	!--- NetCDF
314	INTEGER :: ierr, ncid, varid ! NetCDF identifiers
315	CHARACTER(LEN=30) :: dnam ! dimension name
316	CHARACTER(LEN=80) :: varname ! NetCDF variable name
317	!--- dimensions
318	INTEGER, DIMENSION(4) :: dids ! NetCDF dimensions identifiers
319	REAL, ALLOCATABLE, DIMENSION(:) :: dlon_ini ! initial longitudes vector
320	REAL, ALLOCATABLE, DIMENSION(:) :: dlat_ini ! initial latitudes vector
321	REAL, POINTER, DIMENSION(:) :: dlon, dlat ! reordered lon/lat vectors
322	!--- fields
323	INTEGER :: imdep, jmdep, lmdep ! dimensions of 'champ'
324	REAL, ALLOCATABLE, DIMENSION(:,:) :: champ ! wanted field on initial grid
325	REAL, ALLOCATABLE, DIMENSION(:) :: yder, timeyear
326	REAL, DIMENSION(iim,jjp1) :: champint ! interpolated field
327	REAL, ALLOCATABLE, DIMENSION(:,:,:) :: champtime
328	REAL, ALLOCATABLE, DIMENSION(:,:,:) :: champan
329	REAL :: time, by
330	!--- input files
331	CHARACTER(LEN=20) :: cal_in ! calendar
332	INTEGER :: ndays_in ! number of days
333	!--- misc
334	INTEGER :: i, j, k, l ! loop counters
335	REAL, ALLOCATABLE, DIMENSION(:,:) :: work ! used for extrapolation
336	CHARACTER(LEN=25) :: title ! for messages
337	LOGICAL :: extrp ! flag for extrapolation
338	REAL :: chmin, chmax
339	!-------------------------------------------------------------------------------
340	!---Variables depending on keyword 'mode' --------------------------------------
341	NULLIFY(champo)
342	SELECT CASE(mode)
343	CASE('RUG'); varname='RUGOS'; title='Rugosite'
344	CASE('SIC'); varname='sicbcs'; title='Sea-ice'
345	CASE('SST'); varname='tosbcs'; title='SST'
346	CASE('ALB'); varname='ALBEDO'; title='Albedo'
347	END SELECT
348
349	extrp=.FALSE.
350	IF ( PRESENT(flag) ) THEN
351	IF ( flag .AND. mode=='SST' ) extrp=.TRUE.
352	END IF
353
354	!--- GETTING SOME DIMENSIONAL VARIABLES FROM FILE ------------------------------
355	ierr=NF90_OPEN(fnam,NF90_NOWRITE,ncid); CALL ncerr(ierr,fnam)
356	ierr=NF90_INQ_VARID(ncid,varname,varid); CALL ncerr(ierr,fnam)
357	ierr=NF90_INQUIRE_VARIABLE(ncid,varid,dimids=dids); CALL ncerr(ierr,fnam)
358
359	!--- Longitude
360	ierr=NF90_INQUIRE_DIMENSION(ncid,dids(1),name=dnam,len=imdep)
361	CALL ncerr(ierr,fnam); ALLOCATE(dlon_ini(imdep),dlon(imdep))
362	ierr=NF90_INQ_VARID(ncid,dnam,varid); CALL ncerr(ierr,fnam)
363	ierr=NF90_GET_VAR(ncid,varid,dlon_ini); CALL ncerr(ierr,fnam)
364	WRITE(lunout,*) 'variable ', dnam, 'dimension ', imdep
365
366	!--- Latitude
367	ierr=NF90_INQUIRE_DIMENSION(ncid,dids(2),name=dnam,len=jmdep)
368	CALL ncerr(ierr,fnam); ALLOCATE(dlat_ini(jmdep),dlat(jmdep))
369	ierr=NF90_INQ_VARID(ncid,dnam,varid); CALL ncerr(ierr,fnam)
370	ierr=NF90_GET_VAR(ncid,varid,dlat_ini); CALL ncerr(ierr,fnam)
371	WRITE(lunout,*) 'variable ', dnam, 'dimension ', jmdep
372
373	!--- Time (variable is not needed - it is rebuilt - but calendar is)
374	ierr=NF90_INQUIRE_DIMENSION(ncid,dids(3),name=dnam,len=lmdep)
375	CALL ncerr(ierr,fnam); ALLOCATE(timeyear(lmdep))
376	ierr=NF90_INQ_VARID(ncid,dnam,varid); CALL ncerr(ierr,fnam)
377	cal_in=' '
378	ierr=NF90_GET_ATT(ncid,varid,'calendar',cal_in)
379	IF(ierr/=NF90_NOERR) THEN
380	SELECT CASE(mode)
381	CASE('RUG','ALB'); cal_in='360d'
382	CASE('SIC','SST'); cal_in='gregorian'
383	END SELECT
384	WRITE(lunout,*)'ATTENTION: variable ''time'' sans attribut ''calendrier'' d&
385	&ans '//TRIM(fnam)//'. On choisit la valeur par defaut.'
386	END IF
387	WRITE(lunout,*) 'variable ', dnam, 'dimension ', lmdep, 'calendrier ', cal_in
388
389	!--- CONSTRUCTING THE INPUT TIME VECTOR FOR INTERPOLATION ----------------------
390	!--- Determining input file number of days, depending on calendar
391	ndays_in=year_len(anneeref,cal_in)
392
393	!--- Time vector reconstruction (time vector from file is not trusted)
394	!--- If input records are not monthly, time sampling has to be constant !
395	timeyear=mid_months(anneeref,cal_in,lmdep)
396	IF(lmdep/=12) WRITE(lunout,'(a,i3,a)')'Note: les fichiers de '//TRIM(mode) &
397	//' ne comportent pas 12, mais ',lmdep,' enregistrements.'
398
399	!--- GETTING THE FIELD AND INTERPOLATING IT ------------------------------------
400	ALLOCATE(champ(imdep,jmdep),champtime(iim,jjp1,lmdep))
401	IF(extrp) ALLOCATE(work(imdep,jmdep))
402
403	WRITE(lunout,*)
404	WRITE(lunout,'(a,i3,a)')'LECTURE ET INTERPOLATION HORIZ. DE ',lmdep,' CHAMPS.'
405	ierr=NF90_INQ_VARID(ncid,varname,varid); CALL ncerr(ierr,fnam)
406	DO l=1,lmdep
407	ierr=NF90_GET_VAR(ncid,varid,champ,(/1,1,l/),(/imdep,jmdep,1/))
408	CALL ncerr(ierr,fnam)
409	CALL conf_dat2d(title,imdep,jmdep,dlon_ini,dlat_ini,dlon,dlat,champ,ibar)
410
411	IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
412
413	IF(ibar.AND..NOT.(mode=='SIC'.AND.flag)) THEN
414	IF(l==1) THEN
415	WRITE(lunout,*) &
416	'-------------------------------------------------------------------------'
417	WRITE(lunout,*) &
418	'$$$ Utilisation de l''interpolation barycentrique pour '//TRIM(title)//' $$$'
419	WRITE(lunout,*) &
420	'-------------------------------------------------------------------------'
421	END IF
422	IF(mode=='RUG') champ=LOG(champ)
423	CALL inter_barxy(dlon, dlat(:jmdep-1), champ, rlonu(:iim), &
424	rlatv, champint)
425	IF(mode=='RUG') THEN
426	champint=EXP(champint)
427	WHERE(NINT(mask)/=1) champint=0.001
428	END IF
429	ELSE
430	SELECT CASE(mode)
431	CASE('RUG'); CALL rugosite(imdep, jmdep, dlon, dlat, champ, &
432	iim, jjp1, rlonv, rlatu, champint, mask)
433	CASE('SIC'); CALL sea_ice (imdep, jmdep, dlon, dlat, champ, &
434	iim, jjp1, rlonv, rlatu, champint)
435	CASE('SST','ALB'); CALL grille_m(imdep, jmdep, dlon, dlat, champ, &
436	iim, jjp1, rlonv, rlatu, champint)
437	END SELECT
438	END IF
439	champtime(:,:,l)=champint
440	END DO
441	ierr=NF90_CLOSE(ncid); CALL ncerr(ierr,fnam)
442
443	DEALLOCATE(dlon_ini,dlat_ini,dlon,dlat,champ)
444	IF(extrp) DEALLOCATE(work)
445
446	!--- TIME INTERPOLATION --------------------------------------------------------
447	WRITE(lunout,*)
448	WRITE(lunout,*)'INTERPOLATION TEMPORELLE.'
449	WRITE(lunout,"(2x,' Vecteur temps en entree: ',10f6.1)") timeyear
450	WRITE(lunout,"(2x,' Vecteur temps en sortie de 0 a ',i3)") ndays
451	ALLOCATE(yder(lmdep),champan(iip1,jjp1,ndays))
452	DO j=1,jjp1
453	DO i=1,iim
454	CALL spline(timeyear,champtime(i,j,:),lmdep,1.e30,1.e30,yder)
455	DO k=1,ndays
456	time=FLOAT((k-1)*ndays_in)/FLOAT(ndays)
457	CALL splint(timeyear,champtime(i,j,:),yder,lmdep,time,by)
458	champan(i,j,k) = by
459	END DO
460	END DO
461	END DO
462	champan(iip1,:,:)=champan(1,:,:)
463	DEALLOCATE(yder,champtime,timeyear)
464
465	!--- Checking the result
466	DO j=1,jjp1
467	CALL minmax(iip1,champan(1,j,10),chmin,chmax)
468	WRITE(lunout,*)' '//TRIM(title)//' au temps 10 ',chmin,chmax,j
469	END DO
470
471	!--- SPECIAL FILTER FOR SST: SST>271.38 ----------------------------------------
472	IF(mode=='SST') THEN
473	WRITE(lunout,*) 'Filtrage de la SST: SST >= 271.38'
474	WHERE(champan<271.38) champan=271.38
475	END IF
476
477	!--- SPECIAL FILTER FOR SIC: 0.0<SIC<1.0 ---------------------------------------
478	IF(mode=='SIC') THEN
479	WRITE(lunout,*) 'Filtrage de la SIC: 0.0 < Sea-ice < 1.0'
480	IF(.NOT.lCPL) champan(:,:,:)=champan(:,:,:)/100.
481	champan(iip1,:,:)=champan(1,:,:)
482	WHERE(champan>1.0) champan=1.0
483	WHERE(champan<0.0) champan=0.0
484	END IF
485
486	!--- DYNAMICAL TO PHYSICAL GRID ------------------------------------------------
487	ALLOCATE(champo(klon,ndays))
488	DO k=1,ndays
489	CALL gr_dyn_fi(1,iip1,jjp1,klon,champan(1,1,k),champo(1,k))
490	END DO
491	DEALLOCATE(champan)
492
493	END SUBROUTINE get_2Dfield
494	!
495	!-------------------------------------------------------------------------------
496
497
498
499	!-------------------------------------------------------------------------------
500	!
501	FUNCTION year_len(y,cal_in)
502	!
503	!-------------------------------------------------------------------------------
504	USE ioipsl, ONLY : ioget_calendar,ioconf_calendar,lock_calendar,ioget_year_len
505	IMPLICIT NONE
506	!-------------------------------------------------------------------------------
507	! Arguments:
508	INTEGER :: year_len
509	INTEGER, INTENT(IN) :: y
510	CHARACTER(LEN=*), INTENT(IN) :: cal_in
511	!-------------------------------------------------------------------------------
512	! Local variables:
513	CHARACTER(LEN=20) :: cal_out ! calendar (for outputs)
514	!-------------------------------------------------------------------------------
515	!--- Getting the input calendar to reset at the end of the function
516	CALL ioget_calendar(cal_out)
517
518	!--- Unlocking calendar and setting it to wanted one
519	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_in))
520
521	!--- Getting the number of days in this year
522	year_len=ioget_year_len(y)
523
524	!--- Back to original calendar
525	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_out))
526
527	END FUNCTION year_len
528	!
529	!-------------------------------------------------------------------------------
530
531
532	!-------------------------------------------------------------------------------
533	!
534	FUNCTION mid_months(y,cal_in,nm)
535	!
536	!-------------------------------------------------------------------------------
537	USE ioipsl, ONLY : ioget_calendar,ioconf_calendar,lock_calendar,ioget_mon_len
538	IMPLICIT NONE
539	!-------------------------------------------------------------------------------
540	! Arguments:
541	INTEGER, INTENT(IN) :: y ! year
542	CHARACTER(LEN=*), INTENT(IN) :: cal_in ! calendar
543	INTEGER, INTENT(IN) :: nm ! months/year number
544	REAL, DIMENSION(nm) :: mid_months ! mid-month times
545	!-------------------------------------------------------------------------------
546	! Local variables:
547	CHARACTER(LEN=99) :: mess ! error message
548	CHARACTER(LEN=20) :: cal_out ! calendar (for outputs)
549	INTEGER, DIMENSION(nm) :: mnth ! months lengths (days)
550	INTEGER :: m ! months counter
551	INTEGER :: nd ! number of days
552	!-------------------------------------------------------------------------------
553	nd=year_len(y,cal_in)
554
555	IF(nm==12) THEN
556
557	!--- Getting the input calendar to reset at the end of the function
558	CALL ioget_calendar(cal_out)
559
560	!--- Unlocking calendar and setting it to wanted one
561	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_in))
562
563	!--- Getting the length of each month
564	DO m=1,nm; mnth(m)=ioget_mon_len(y,m); END DO
565
566	!--- Back to original calendar
567	CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_out))
568
569	ELSE IF(MODULO(nd,nm)/=0) THEN
570	WRITE(mess,'(a,i3,a,i3,a)')'Unconsistent calendar: ',nd,' days/year, but ',&
571	nm,' months/year. Months number should divide days number.'
572	CALL abort_gcm('mid_months',TRIM(mess),1)
573
574	ELSE
575	mnth=(/(m,m=1,nm,nd/nm)/)
576	END IF
577
578	!--- Mid-months times
579	mid_months(1)=0.5*FLOAT(mnth(1))
580	DO k=2,nm
581	mid_months(k)=mid_months(k-1)+0.5*FLOAT(mnth(k-1)+mnth(k))
582	END DO
583
584	END FUNCTION mid_months
585	!
586	!-------------------------------------------------------------------------------
587
588
589	!-------------------------------------------------------------------------------
590	!
591	SUBROUTINE ncerr(ncres,fnam)
592	!
593	!-------------------------------------------------------------------------------
594	! Purpose: NetCDF errors handling.
595	!-------------------------------------------------------------------------------
596	USE netcdf, ONLY : NF90_NOERR, NF90_STRERROR
597	IMPLICIT NONE
598	!-------------------------------------------------------------------------------
599	! Arguments:
600	INTEGER, INTENT(IN) :: ncres
601	CHARACTER(LEN=*), INTENT(IN) :: fnam
602	!-------------------------------------------------------------------------------
603	#include "iniprint.h"
604	IF(ncres/=NF90_NOERR) THEN
605	WRITE(lunout,*)'Problem with file '//TRIM(fnam)//' in routine limit_netcdf.'
606	CALL abort_gcm('limit_netcdf',NF90_STRERROR(ncres),1)
607	END IF
608
609	END SUBROUTINE ncerr
610	!
611	!-------------------------------------------------------------------------------
612
613
614	END SUBROUTINE limit_netcdf

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