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limit_netcdf.F90 @ 5080

Last change on this file since 5080 was 2160, checked in by Laurent Fairhead, 10 years ago
Merged trunk changes -r2070:2158 into testing branch. Compilation problems introduced by revision r2155 have been corrected by hand
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

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

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