source: LMDZ5/branches/testing/libf/phylmd/limit_netcdf.F90 @ 2056

Last change on this file since 2056 was 1910, checked in by Laurent Fairhead, 11 years ago

Merged trunk changes r1860:1909 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: 26.4 KB
Line 
1!
2! $Id: limit_netcdf.F90 1508 2011-04-15 13:05:34Z jghattas $
3!-------------------------------------------------------------------------------
4!
5SUBROUTINE 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
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#endif
34  IMPLICIT NONE
35!-------------------------------------------------------------------------------
36! Arguments:
37#include "dimensions.h"
38#include "paramet.h"
39#include "iniprint.h"
40  LOGICAL,                    INTENT(IN) :: interbar ! barycentric interpolation
41  LOGICAL,                    INTENT(IN) :: extrap   ! SST extrapolation flag
42  LOGICAL,                    INTENT(IN) :: oldice   ! old way ice computation
43  REAL, DIMENSION(iip1,jjp1), INTENT(IN) :: masque   ! land mask
44#ifndef CPP_EARTH
45  CALL abort_gcm('limit_netcdf','Earth-specific routine, needs Earth physics',1)
46#else
47!-------------------------------------------------------------------------------
48! Local variables:
49#include "logic.h"
50#include "comvert.h"
51#include "comgeom2.h"
52#include "comconst.h"
53
54!--- INPUT NETCDF FILES NAMES --------------------------------------------------
55  CHARACTER(LEN=25) :: icefile, sstfile, dumstr
56  CHARACTER(LEN=25), PARAMETER :: famipsst='amipbc_sst_1x1.nc        ',        &
57                                  famipsic='amipbc_sic_1x1.nc        ',        &
58                                  fcpldsst='cpl_atm_sst.nc           ',        &
59                                  fcpldsic='cpl_atm_sic.nc           ',        &
60                                  fhistsst='histmth_sst.nc           ',        &
61                                  fhistsic='histmth_sic.nc           ',        &
62                                  frugo   ='Rugos.nc                 ',        &
63                                  falbe   ='Albedo.nc                '
64  CHARACTER(LEN=10) :: varname
65!--- OUTPUT VARIABLES FOR NETCDF FILE ------------------------------------------
66  REAL,   DIMENSION(klon)                :: fi_ice, verif
67  REAL,   DIMENSION(:,:),   POINTER      :: phy_rug=>NULL(), phy_ice=>NULL()
68  REAL,   DIMENSION(:,:),   POINTER      :: phy_sst=>NULL(), phy_alb=>NULL()
69  REAL,   DIMENSION(:,:),   ALLOCATABLE  :: phy_bil
70  REAL,   DIMENSION(:,:,:), ALLOCATABLE  :: pctsrf_t
71  INTEGER                                :: nbad
72
73!--- VARIABLES FOR OUTPUT FILE WRITING -----------------------------------------
74  INTEGER :: ierr, nid, ndim, ntim, k
75  INTEGER, DIMENSION(2) :: dims
76  INTEGER :: id_tim,  id_SST,  id_BILS, id_RUG, id_ALB
77  INTEGER :: id_FOCE, id_FSIC, id_FTER, id_FLIC
78  INTEGER :: NF90_FORMAT
79  INTEGER :: ndays                   !--- Depending on the output calendar
80
81!--- INITIALIZATIONS -----------------------------------------------------------
82#ifdef NC_DOUBLE
83  NF90_FORMAT=NF90_DOUBLE
84#else
85  NF90_FORMAT=NF90_FLOAT
86#endif
87
88  pi    = 4.*ATAN(1.)
89  rad   = 6371229.
90  daysec= 86400.
91  omeg  = 2.*pi/daysec
92  g     = 9.8
93  kappa = 0.2857143
94  cpp   = 1004.70885
95  dtvr  = daysec/REAL(day_step)
96  CALL inigeom
97
98!--- Beware: anneeref (from gcm.def) is used to determine output time sampling
99  ndays=ioget_year_len(anneeref)
100
101!--- RUGOSITY TREATMENT --------------------------------------------------------
102  IF (prt_level>1) WRITE(lunout,*) 'Traitement de la rugosite'
103  varname='RUGOS'
104  CALL get_2Dfield(frugo,varname,'RUG',interbar,ndays,phy_rug,mask=masque(1:iim,:))
105
106!--- OCEAN TREATMENT -----------------------------------------------------------
107  IF (prt_level>1) WRITE(lunout,*) 'Traitement de la glace oceanique'
108
109! Input SIC file selection
110! Open file only to test if available
111  IF ( NF90_OPEN(TRIM(famipsic),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
112     icefile=TRIM(famipsic)
113     varname='sicbcs'
114  ELSE IF( NF90_OPEN(TRIM(fcpldsic),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
115     icefile=TRIM(fcpldsic)
116     varname='SIICECOV'
117  ELSE IF ( NF90_OPEN(TRIM(fhistsic),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
118     icefile=TRIM(fhistsic)
119     varname='pourc_sic'
120  ELSE
121     WRITE(lunout,*) 'ERROR! No sea-ice input file was found.'
122     WRITE(lunout,*) 'One of following files must be availible : ',trim(famipsic),', ',trim(fcpldsic),', ',trim(fhistsic)
123     CALL abort_gcm('limit_netcdf','No sea-ice file was found',1)
124  END IF
125  ierr=NF90_CLOSE(nid)
126  IF (prt_level>=0) WRITE(lunout,*)'Pour la glace de mer a ete choisi le fichier '//TRIM(icefile)
127
128  CALL get_2Dfield(icefile,varname, 'SIC',interbar,ndays,phy_ice,flag=oldice)
129
130  ALLOCATE(pctsrf_t(klon,nbsrf,ndays))
131  DO k=1,ndays
132     fi_ice=phy_ice(:,k)
133     WHERE(fi_ice>=1.0  ) fi_ice=1.0
134     WHERE(fi_ice<EPSFRA) fi_ice=0.0
135     pctsrf_t(:,is_ter,k)=pctsrf(:,is_ter)       ! land soil
136     pctsrf_t(:,is_lic,k)=pctsrf(:,is_lic)       ! land ice
137     IF (icefile==trim(fcpldsic)) THEN           ! SIC=pICE*(1-LIC-TER)
138        pctsrf_t(:,is_sic,k)=fi_ice(:)*(1.-pctsrf(:,is_lic)-pctsrf(:,is_ter))
139     ELSE IF (icefile==trim(fhistsic)) THEN      ! SIC=pICE
140        pctsrf_t(:,is_sic,k)=fi_ice(:)
141     ELSE ! icefile==famipsic                    ! SIC=pICE-LIC
142        pctsrf_t(:,is_sic,k)=fi_ice-pctsrf_t(:,is_lic,k)
143     END IF
144     WHERE(pctsrf_t(:,is_sic,k)<=0) pctsrf_t(:,is_sic,k)=0.
145     WHERE(1.0-zmasq<EPSFRA)
146        pctsrf_t(:,is_sic,k)=0.0
147        pctsrf_t(:,is_oce,k)=0.0
148     ELSEWHERE
149        WHERE(pctsrf_t(:,is_sic,k)>=1.0-zmasq)
150           pctsrf_t(:,is_sic,k)=1.0-zmasq
151           pctsrf_t(:,is_oce,k)=0.0
152        ELSEWHERE
153           pctsrf_t(:,is_oce,k)=1.0-zmasq-pctsrf_t(:,is_sic,k)
154           WHERE(pctsrf_t(:,is_oce,k)<EPSFRA)
155              pctsrf_t(:,is_oce,k)=0.0
156              pctsrf_t(:,is_sic,k)=1.0-zmasq
157           END WHERE
158        END WHERE
159     END WHERE
160     nbad=COUNT(pctsrf_t(:,is_oce,k)<0.0)
161     IF(nbad>0) WRITE(lunout,*) 'pb sous maille pour nb point = ',nbad
162     nbad=COUNT(abs(sum(pctsrf_t(:,:,k),dim=2)-1.0)>EPSFRA)
163     IF(nbad>0) WRITE(lunout,*) 'pb sous surface pour nb points = ',nbad
164  END DO
165  DEALLOCATE(phy_ice)
166
167!--- SST TREATMENT -------------------------------------------------------------
168  IF (prt_level>1) WRITE(lunout,*) 'Traitement de la sst'
169
170! Input SST file selection
171! Open file only to test if available
172  IF ( NF90_OPEN(TRIM(famipsst),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
173     sstfile=TRIM(famipsst)
174     varname='tosbcs'
175  ELSE IF ( NF90_OPEN(TRIM(fcpldsst),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
176     sstfile=TRIM(fcpldsst)
177     varname='SISUTESW'
178  ELSE IF ( NF90_OPEN(TRIM(fhistsst),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
179     sstfile=TRIM(fhistsst)
180     varname='tsol_oce'
181  ELSE
182     WRITE(lunout,*) 'ERROR! No sst input file was found.'
183     WRITE(lunout,*) 'One of following files must be availible : ',trim(famipsst),trim(fcpldsst),trim(fhistsst)
184     CALL abort_gcm('limit_netcdf','No sst file was found',1)
185  END IF
186  ierr=NF90_CLOSE(nid)
187  IF (prt_level>=0) WRITE(lunout,*)'Pour la temperature de mer a ete choisi un fichier '//TRIM(sstfile)
188
189  CALL get_2Dfield(sstfile,varname,'SST',interbar,ndays,phy_sst,flag=extrap)
190
191!--- ALBEDO TREATMENT ----------------------------------------------------------
192  IF (prt_level>1) WRITE(lunout,*) 'Traitement de l albedo'
193  varname='ALBEDO'
194  CALL get_2Dfield(falbe,varname,'ALB',interbar,ndays,phy_alb)
195
196!--- REFERENCE GROUND HEAT FLUX TREATMENT --------------------------------------
197  ALLOCATE(phy_bil(klon,ndays)); phy_bil=0.0
198
199!--- OUTPUT FILE WRITING -------------------------------------------------------
200  IF (prt_level>5) WRITE(lunout,*) 'Ecriture du fichier limit : debut'
201
202  !--- File creation
203  ierr=NF90_CREATE("limit.nc",NF90_CLOBBER,nid)
204  ierr=NF90_PUT_ATT(nid,NF90_GLOBAL,"title","Fichier conditions aux limites")
205
206  !--- Dimensions creation
207  ierr=NF90_DEF_DIM(nid,"points_physiques",klon,ndim)
208  ierr=NF90_DEF_DIM(nid,"time",NF90_UNLIMITED,ntim)
209
210  dims=(/ndim,ntim/)
211
212  !--- Variables creation
213  ierr=NF90_DEF_VAR(nid,"TEMPS",NF90_FORMAT,(/ntim/),id_tim)
214  ierr=NF90_DEF_VAR(nid,"FOCE", NF90_FORMAT,dims,id_FOCE)
215  ierr=NF90_DEF_VAR(nid,"FSIC", NF90_FORMAT,dims,id_FSIC)
216  ierr=NF90_DEF_VAR(nid,"FTER", NF90_FORMAT,dims,id_FTER)
217  ierr=NF90_DEF_VAR(nid,"FLIC", NF90_FORMAT,dims,id_FLIC)
218  ierr=NF90_DEF_VAR(nid,"SST",  NF90_FORMAT,dims,id_SST)
219  ierr=NF90_DEF_VAR(nid,"BILS", NF90_FORMAT,dims,id_BILS)
220  ierr=NF90_DEF_VAR(nid,"ALB",  NF90_FORMAT,dims,id_ALB)
221  ierr=NF90_DEF_VAR(nid,"RUG",  NF90_FORMAT,dims,id_RUG)
222
223  !--- Attributes creation
224  ierr=NF90_PUT_ATT(nid,id_tim, "title","Jour dans l annee")
225  ierr=NF90_PUT_ATT(nid,id_FOCE,"title","Fraction ocean")
226  ierr=NF90_PUT_ATT(nid,id_FSIC,"title","Fraction glace de mer")
227  ierr=NF90_PUT_ATT(nid,id_FTER,"title","Fraction terre")
228  ierr=NF90_PUT_ATT(nid,id_FLIC,"title","Fraction land ice")
229  ierr=NF90_PUT_ATT(nid,id_SST ,"title","Temperature superficielle de la mer")
230  ierr=NF90_PUT_ATT(nid,id_BILS,"title","Reference flux de chaleur au sol")
231  ierr=NF90_PUT_ATT(nid,id_ALB, "title","Albedo a la surface")
232  ierr=NF90_PUT_ATT(nid,id_RUG, "title","Rugosite")
233
234  ierr=NF90_ENDDEF(nid)
235
236  !--- Variables saving
237  ierr=NF90_PUT_VAR(nid,id_tim,(/(REAL(k),k=1,ndays)/))
238  ierr=NF90_PUT_VAR(nid,id_FOCE,pctsrf_t(:,is_oce,:),(/1,1/),(/klon,ndays/))
239  ierr=NF90_PUT_VAR(nid,id_FSIC,pctsrf_t(:,is_sic,:),(/1,1/),(/klon,ndays/))
240  ierr=NF90_PUT_VAR(nid,id_FTER,pctsrf_t(:,is_ter,:),(/1,1/),(/klon,ndays/))
241  ierr=NF90_PUT_VAR(nid,id_FLIC,pctsrf_t(:,is_lic,:),(/1,1/),(/klon,ndays/))
242  ierr=NF90_PUT_VAR(nid,id_SST ,phy_sst(:,:),(/1,1/),(/klon,ndays/))
243  ierr=NF90_PUT_VAR(nid,id_BILS,phy_bil(:,:),(/1,1/),(/klon,ndays/))
244  ierr=NF90_PUT_VAR(nid,id_ALB ,phy_alb(:,:),(/1,1/),(/klon,ndays/))
245  ierr=NF90_PUT_VAR(nid,id_RUG ,phy_rug(:,:),(/1,1/),(/klon,ndays/))
246
247  ierr=NF90_CLOSE(nid)
248
249  IF (prt_level>5) WRITE(lunout,*) 'Ecriture du fichier limit : fin'
250
251  DEALLOCATE(pctsrf_t,phy_sst,phy_bil,phy_alb,phy_rug)
252
253
254!===============================================================================
255!
256  CONTAINS
257!
258!===============================================================================
259
260
261!-------------------------------------------------------------------------------
262!
263SUBROUTINE get_2Dfield(fnam, varname, mode, ibar, ndays, champo, flag, mask)
264!
265!-----------------------------------------------------------------------------
266! Comments:
267!   There are two assumptions concerning the NetCDF files, that are satisfied
268!   with files that are conforming NC convention:
269!     1) The last dimension of the variables used is the time record.
270!     2) Dimensional variables have the same names as corresponding dimensions.
271!-----------------------------------------------------------------------------
272  USE netcdf, ONLY: NF90_OPEN, NF90_INQ_VARID, NF90_INQUIRE_VARIABLE, &
273       NF90_CLOSE, NF90_INQ_DIMID, NF90_INQUIRE_DIMENSION, NF90_GET_VAR, &
274       NF90_GET_ATT
275  USE dimphy, ONLY : klon
276  USE phys_state_var_mod, ONLY : pctsrf
277  USE control_mod
278  USE pchsp_95_m, only: pchsp_95
279  USE pchfe_95_m, only: pchfe_95
280  USE arth_m, only: arth
281  USE indice_sol_mod
282
283  IMPLICIT NONE
284#include "dimensions.h"
285#include "paramet.h"
286#include "comgeom2.h"
287#include "iniprint.h"
288!-----------------------------------------------------------------------------
289! Arguments:
290  CHARACTER(LEN=*),  INTENT(IN)     :: fnam     ! NetCDF file name
291  CHARACTER(LEN=10), INTENT(IN)     :: varname  ! NetCDF variable name
292  CHARACTER(LEN=3),  INTENT(IN)     :: mode     ! RUG, SIC, SST or ALB
293  LOGICAL,           INTENT(IN)     :: ibar     ! interp on pressure levels
294  INTEGER,           INTENT(IN)     :: ndays    ! current year number of days
295  REAL,    POINTER,  DIMENSION(:, :) :: champo  ! output field = f(t)
296  LOGICAL, OPTIONAL, INTENT(IN)     :: flag     ! extrapol. (SST) old ice (SIC)
297  REAL,    OPTIONAL, DIMENSION(iim, jjp1), INTENT(IN) :: mask
298!------------------------------------------------------------------------------
299! Local variables:
300!--- NetCDF
301  INTEGER :: ncid, varid                  ! NetCDF identifiers
302  CHARACTER(LEN=30)               :: dnam       ! dimension name
303!--- dimensions
304  INTEGER,           DIMENSION(4) :: dids       ! NetCDF dimensions identifiers
305  REAL, ALLOCATABLE, DIMENSION(:) :: dlon_ini   ! initial longitudes vector
306  REAL, ALLOCATABLE, DIMENSION(:) :: dlat_ini   ! initial latitudes  vector
307  REAL, POINTER,     DIMENSION(:) :: dlon, dlat ! reordered lon/lat  vectors
308!--- fields
309  INTEGER :: imdep, jmdep, lmdep                ! dimensions of 'champ'
310  REAL, ALLOCATABLE, DIMENSION(:, :) :: champ   ! wanted field on initial grid
311  REAL, ALLOCATABLE, DIMENSION(:) :: yder, timeyear
312  REAL,              DIMENSION(iim, jjp1) :: champint   ! interpolated field
313  REAL, ALLOCATABLE, DIMENSION(:, :, :)    :: champtime
314  REAL, ALLOCATABLE, DIMENSION(:, :, :)    :: champan
315!--- input files
316  CHARACTER(LEN=20)                 :: cal_in   ! calendar
317  CHARACTER(LEN=20)                 :: unit_sic ! attribute unit in sea-ice file
318  INTEGER                           :: ndays_in ! number of days
319!--- misc
320  INTEGER :: i, j, k, l                         ! loop counters
321  REAL, ALLOCATABLE, DIMENSION(:, :) :: work     ! used for extrapolation
322  CHARACTER(LEN=25)                 :: title    ! for messages
323  LOGICAL                           :: extrp    ! flag for extrapolation
324  LOGICAL                           :: oldice   ! flag for old way ice computation
325  REAL                              :: chmin, chmax
326  INTEGER ierr
327  integer n_extrap ! number of extrapolated points
328  logical skip
329
330!------------------------------------------------------------------------------
331!---Variables depending on keyword 'mode' -------------------------------------
332  NULLIFY(champo)
333
334  SELECT CASE(mode)
335  CASE('RUG'); title='Rugosite'
336  CASE('SIC'); title='Sea-ice'
337  CASE('SST'); title='SST'
338  CASE('ALB'); title='Albedo'
339  END SELECT
340 
341
342  extrp=.FALSE.
343  oldice=.FALSE.
344  IF ( PRESENT(flag) ) THEN
345    IF ( flag .AND. mode=='SST' ) extrp=.TRUE.
346    IF ( flag .AND. mode=='SIC' ) oldice=.TRUE.
347  END IF
348
349!--- GETTING SOME DIMENSIONAL VARIABLES FROM FILE -----------------------------
350  IF (prt_level>5) WRITE(lunout,*) ' Now reading file : ',fnam
351  ierr=NF90_OPEN(fnam, NF90_NOWRITE, ncid);             CALL ncerr(ierr, fnam)
352  ierr=NF90_INQ_VARID(ncid, trim(varname), varid);            CALL ncerr(ierr, fnam)
353  ierr=NF90_INQUIRE_VARIABLE(ncid, varid, dimids=dids); CALL ncerr(ierr, fnam)
354
355!--- Read unit for sea-ice variable only
356  IF (mode=='SIC') THEN
357     ierr=NF90_GET_ATT(ncid, varid, 'units', unit_sic)
358     IF(ierr/=NF90_NOERR) THEN
359        IF (prt_level>5) WRITE(lunout,*) 'No unit was given in sea-ice file. Take percentage as default value'
360        unit_sic='X'
361     ELSE
362        IF (prt_level>5) WRITE(lunout,*) ' Sea-ice cover has unit=',unit_sic
363     END IF
364  END IF
365
366!--- Longitude
367  ierr=NF90_INQUIRE_DIMENSION(ncid, dids(1), name=dnam, len=imdep)
368  CALL ncerr(ierr, fnam); ALLOCATE(dlon_ini(imdep), dlon(imdep))
369  ierr=NF90_INQ_VARID(ncid, dnam, varid);                CALL ncerr(ierr, fnam)
370  ierr=NF90_GET_VAR(ncid, varid, dlon_ini);              CALL ncerr(ierr, fnam)
371  IF (prt_level>5) WRITE(lunout, *) 'variable ', dnam, 'dimension ', imdep
372
373!--- Latitude
374  ierr=NF90_INQUIRE_DIMENSION(ncid, dids(2), name=dnam, len=jmdep)
375  CALL ncerr(ierr, fnam); ALLOCATE(dlat_ini(jmdep), dlat(jmdep))
376  ierr=NF90_INQ_VARID(ncid, dnam, varid);                CALL ncerr(ierr, fnam)
377  ierr=NF90_GET_VAR(ncid, varid, dlat_ini);              CALL ncerr(ierr, fnam)
378  IF (prt_level>5) WRITE(lunout, *) 'variable ', dnam, 'dimension ', jmdep
379
380!--- Time (variable is not needed - it is rebuilt - but calendar is)
381  ierr=NF90_INQUIRE_DIMENSION(ncid, dids(3), name=dnam, len=lmdep)
382  CALL ncerr(ierr, fnam); ALLOCATE(timeyear(lmdep))
383  ierr=NF90_INQ_VARID(ncid, dnam, varid);                CALL ncerr(ierr, fnam)
384  cal_in=' '
385  ierr=NF90_GET_ATT(ncid, varid, 'calendar', cal_in)
386  IF(ierr/=NF90_NOERR) THEN
387    SELECT CASE(mode)
388      CASE('RUG', 'ALB'); cal_in='360d'
389      CASE('SIC', 'SST'); cal_in='gregorian'
390    END SELECT
391    IF (prt_level>5) WRITE(lunout, *)'ATTENTION: variable "time" sans attribut "calendrier" ' &
392         // 'dans '//TRIM(fnam)//'. On choisit la valeur par defaut.'
393  END IF
394  IF (prt_level>5) WRITE(lunout, *) 'variable ', dnam, 'dimension ', lmdep, 'calendrier ', &
395       cal_in
396
397 
398!--- CONSTRUCTING THE INPUT TIME VECTOR FOR INTERPOLATION --------------------
399  !--- Determining input file number of days, depending on calendar
400  ndays_in=year_len(anneeref, cal_in)
401
402!--- Time vector reconstruction (time vector from file is not trusted)
403!--- If input records are not monthly, time sampling has to be constant !
404  timeyear=mid_months(anneeref, cal_in, lmdep)
405  IF (lmdep /= 12) WRITE(lunout,*) 'Note : les fichiers de ', TRIM(mode), &
406       ' ne comportent pas 12, mais ', lmdep, ' enregistrements.'
407
408!--- GETTING THE FIELD AND INTERPOLATING IT ----------------------------------
409  ALLOCATE(champ(imdep, jmdep), champtime(iim, jjp1, lmdep))
410  IF(extrp) ALLOCATE(work(imdep, jmdep))
411
412  IF (prt_level>5) WRITE(lunout, *)
413  IF (prt_level>5) WRITE(lunout,*)'LECTURE ET INTERPOLATION HORIZ. DE ', lmdep, ' CHAMPS.'
414  ierr=NF90_INQ_VARID(ncid, varname, varid);             CALL ncerr(ierr, fnam)
415  DO l=1, lmdep
416    ierr=NF90_GET_VAR(ncid, varid, champ, (/1, 1, l/), (/imdep, jmdep, 1/))
417    CALL ncerr(ierr, fnam)
418    CALL conf_dat2d(title, imdep, jmdep, dlon_ini, dlat_ini, dlon, dlat, &
419         champ, ibar)
420
421    IF (extrp) CALL extrapol(champ, imdep, jmdep, 999999., .TRUE., .TRUE., 2, &
422         work)
423
424    IF(ibar .AND. .NOT.oldice) THEN
425      IF(l==1 .AND. prt_level>5) THEN
426        WRITE(lunout, *) '-------------------------------------------------------------------------'
427        WRITE(lunout, *) 'Utilisation de l''interpolation barycentrique pour ',TRIM(title),' $$$'
428        WRITE(lunout, *) '-------------------------------------------------------------------------'
429      END IF
430      IF(mode=='RUG') champ=LOG(champ)
431      CALL inter_barxy(dlon, dlat(:jmdep-1), champ, rlonu(:iim),     &
432                         rlatv, champint)
433      IF(mode=='RUG') THEN
434        champint=EXP(champint)
435        WHERE(NINT(mask)/=1) champint=0.001
436      END IF
437    ELSE
438      SELECT CASE(mode)
439        CASE('RUG');       CALL rugosite(imdep, jmdep, dlon, dlat, champ,    &
440                                    iim, jjp1, rlonv, rlatu, champint, mask)
441        CASE('SIC');       CALL sea_ice (imdep, jmdep, dlon, dlat, champ,    &
442                                    iim, jjp1, rlonv, rlatu, champint)
443        CASE('SST', 'ALB'); CALL grille_m(imdep, jmdep, dlon, dlat, champ,    &
444                                    iim, jjp1, rlonv, rlatu, champint)
445      END SELECT
446    END IF
447    champtime(:, :, l)=champint
448  END DO
449  ierr=NF90_CLOSE(ncid);                                 CALL ncerr(ierr, fnam)
450
451  DEALLOCATE(dlon_ini, dlat_ini, dlon, dlat, champ)
452  IF(extrp) DEALLOCATE(work)
453
454!--- TIME INTERPOLATION ------------------------------------------------------
455  IF (prt_level>5) THEN
456     WRITE(lunout, *)
457     WRITE(lunout, *)'INTERPOLATION TEMPORELLE.'
458     WRITE(lunout, *)' Vecteur temps en entree: ', timeyear
459     WRITE(lunout, *)' Vecteur temps en sortie de 0 a ', ndays
460  END IF
461
462  ALLOCATE(yder(lmdep), champan(iip1, jjp1, ndays))
463  skip = .false.
464  n_extrap = 0
465  DO j=1, jjp1
466    DO i=1, iim
467      yder = pchsp_95(timeyear, champtime(i, j, :), ibeg=2, iend=2, &
468           vc_beg=0., vc_end=0.)
469      CALL pchfe_95(timeyear, champtime(i, j, :), yder, skip, &
470           arth(0., real(ndays_in) / ndays, ndays), champan(i, j, :), ierr)
471      if (ierr < 0) stop 1
472      n_extrap = n_extrap + ierr
473    END DO
474  END DO
475  if (n_extrap /= 0) then
476     WRITE(lunout,*) "get_2Dfield pchfe_95: n_extrap = ", n_extrap
477  end if
478  champan(iip1, :, :)=champan(1, :, :)
479  DEALLOCATE(yder, champtime, timeyear)
480
481!--- Checking the result
482  DO j=1, jjp1
483    CALL minmax(iip1, champan(1, j, 10), chmin, chmax)
484    IF (prt_level>5) WRITE(lunout, *)' ',TRIM(title),' au temps 10 ', chmin, chmax, j
485  END DO
486
487!--- SPECIAL FILTER FOR SST: SST>271.38 --------------------------------------
488  IF(mode=='SST') THEN
489    IF (prt_level>5) WRITE(lunout, *) 'Filtrage de la SST: SST >= 271.38'
490    WHERE(champan<271.38) champan=271.38
491  END IF
492
493!--- SPECIAL FILTER FOR SIC: 0.0<SIC<1.0 -------------------------------------
494  IF(mode=='SIC') THEN
495    IF (prt_level>5) WRITE(lunout, *) 'Filtrage de la SIC: 0.0 < Sea-ice < 1.0'
496
497    IF (unit_sic=='1') THEN
498       ! Nothing to be done for sea-ice field is already in fraction of 1
499       ! This is the case for sea-ice in file cpl_atm_sic.nc
500       IF (prt_level>5) WRITE(lunout,*) 'Sea-ice field already in fraction of 1'
501    ELSE
502       ! Convert sea ice from percentage to fraction of 1
503       IF (prt_level>5) WRITE(lunout,*) 'Transformt sea-ice field from percentage to fraction of 1.'
504       champan(:, :, :)=champan(:, :, :)/100.
505    END IF
506
507    champan(iip1, :, :)=champan(1, :, :)
508    WHERE(champan>1.0) champan=1.0
509    WHERE(champan<0.0) champan=0.0
510 END IF
511
512!--- DYNAMICAL TO PHYSICAL GRID ----------------------------------------------
513  ALLOCATE(champo(klon, ndays))
514  DO k=1, ndays
515    CALL gr_dyn_fi(1, iip1, jjp1, klon, champan(1, 1, k), champo(1, k))
516  END DO
517  DEALLOCATE(champan)
518
519END SUBROUTINE get_2Dfield
520!
521!-------------------------------------------------------------------------------
522
523
524
525!-------------------------------------------------------------------------------
526!
527FUNCTION year_len(y,cal_in)
528!
529!-------------------------------------------------------------------------------
530  USE ioipsl, ONLY : ioget_calendar,ioconf_calendar,lock_calendar,ioget_year_len
531  IMPLICIT NONE
532!-------------------------------------------------------------------------------
533! Arguments:
534  INTEGER                       :: year_len
535  INTEGER,           INTENT(IN) :: y
536  CHARACTER(LEN=*),  INTENT(IN) :: cal_in
537!-------------------------------------------------------------------------------
538! Local variables:
539  CHARACTER(LEN=20)             :: cal_out              ! calendar (for outputs)
540!-------------------------------------------------------------------------------
541!--- Getting the input calendar to reset at the end of the function
542  CALL ioget_calendar(cal_out)
543
544!--- Unlocking calendar and setting it to wanted one
545  CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_in))
546
547!--- Getting the number of days in this year
548  year_len=ioget_year_len(y)
549
550!--- Back to original calendar
551  CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_out))
552
553END FUNCTION year_len
554!
555!-------------------------------------------------------------------------------
556
557
558!-------------------------------------------------------------------------------
559!
560FUNCTION mid_months(y,cal_in,nm)
561!
562!-------------------------------------------------------------------------------
563  USE ioipsl, ONLY : ioget_calendar,ioconf_calendar,lock_calendar,ioget_mon_len
564  IMPLICIT NONE
565!-------------------------------------------------------------------------------
566! Arguments:
567  INTEGER,                INTENT(IN) :: y               ! year
568  CHARACTER(LEN=*),       INTENT(IN) :: cal_in          ! calendar
569  INTEGER,                INTENT(IN) :: nm              ! months/year number
570  REAL,    DIMENSION(nm)             :: mid_months      ! mid-month times
571!-------------------------------------------------------------------------------
572! Local variables:
573  CHARACTER(LEN=99)                  :: mess            ! error message
574  CHARACTER(LEN=20)                  :: cal_out         ! calendar (for outputs)
575  INTEGER, DIMENSION(nm)             :: mnth            ! months lengths (days)
576  INTEGER                            :: m               ! months counter
577  INTEGER                            :: nd              ! number of days
578!-------------------------------------------------------------------------------
579  nd=year_len(y,cal_in)
580
581  IF(nm==12) THEN
582
583  !--- Getting the input calendar to reset at the end of the function
584    CALL ioget_calendar(cal_out)
585
586  !--- Unlocking calendar and setting it to wanted one
587    CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_in))
588
589  !--- Getting the length of each month
590    DO m=1,nm; mnth(m)=ioget_mon_len(y,m); END DO
591
592  !--- Back to original calendar
593    CALL lock_calendar(.FALSE.); CALL ioconf_calendar(TRIM(cal_out))
594
595  ELSE IF(MODULO(nd,nm)/=0) THEN
596    WRITE(mess,'(a,i3,a,i3,a)')'Unconsistent calendar: ',nd,' days/year, but ',&
597      nm,' months/year. Months number should divide days number.'
598    CALL abort_gcm('mid_months',TRIM(mess),1)
599
600  ELSE
601    mnth=(/(m,m=1,nm,nd/nm)/)
602  END IF
603
604!--- Mid-months times
605  mid_months(1)=0.5*REAL(mnth(1))
606  DO k=2,nm
607    mid_months(k)=mid_months(k-1)+0.5*REAL(mnth(k-1)+mnth(k))
608  END DO
609
610END FUNCTION mid_months
611!
612!-------------------------------------------------------------------------------
613
614
615!-------------------------------------------------------------------------------
616!
617SUBROUTINE ncerr(ncres,fnam)
618!
619!-------------------------------------------------------------------------------
620! Purpose: NetCDF errors handling.
621!-------------------------------------------------------------------------------
622  USE netcdf, ONLY : NF90_NOERR, NF90_STRERROR
623  IMPLICIT NONE
624!-------------------------------------------------------------------------------
625! Arguments:
626  INTEGER,          INTENT(IN) :: ncres
627  CHARACTER(LEN=*), INTENT(IN) :: fnam
628!-------------------------------------------------------------------------------
629#include "iniprint.h"
630  IF(ncres/=NF90_NOERR) THEN
631    WRITE(lunout,*)'Problem with file '//TRIM(fnam)//' in routine limit_netcdf.'
632    CALL abort_gcm('limit_netcdf',NF90_STRERROR(ncres),1)
633  END IF
634
635END SUBROUTINE ncerr
636!
637!-------------------------------------------------------------------------------
638
639#endif
640! of #ifdef CPP_EARTH
641
642END SUBROUTINE limit_netcdf
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