source: LMDZ6/trunk/libf/dynphy_lonlat/phylmd/limit_netcdf.F90 @ 3536

Last change on this file since 3536 was 3380, checked in by dcugnet, 6 years ago

Fix for daily input data usage in limit_netcdf: remove 1 day shift between champan and champtime.

  • 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: 36.1 KB
Line 
1MODULE limit
2!
3!*******************************************************************************
4! Author : L. Fairhead, 27/01/94
5!-------------------------------------------------------------------------------
6! Purpose: Boundary conditions files building for new model using climatologies.
7!          Both grids have to be regular.
8!-------------------------------------------------------------------------------
9! Note: This routine is designed to work for Earth
10!-------------------------------------------------------------------------------
11! Modification history:
12!  * 23/03/1994: Z. X. Li
13!  *    09/1999: L. Fairhead (netcdf reading in LMDZ.3.3)
14!  *    07/2001: P. Le Van
15!  *    11/2009: L. Guez     (ozone day & night climatos, see etat0_netcdf.F90)
16!  *    12/2009: D. Cugnet   (f77->f90, calendars, files from coupled runs)
17!-------------------------------------------------------------------------------
18
19  USE ioipsl,             ONLY: flininfo, flinopen, flinget, flinclo
20  USE assert_eq_m,        ONLY: assert_eq
21  USE cal_tools_m,        ONLY: year_len, mid_month
22  USE conf_dat_m,         ONLY: conf_dat2d, conf_dat3d
23  USE dimphy,             ONLY: klon, zmasq
24  USE geometry_mod,       ONLY: longitude_deg, latitude_deg
25  USE phys_state_var_mod, ONLY: pctsrf
26  USE control_mod,        ONLY: anneeref
27  USE init_ssrf_m,        ONLY: start_init_subsurf
28
29  INTEGER,           PARAMETER :: ns=256
30  CHARACTER(LEN=ns), PARAMETER :: &
31  fsst(5)=['amipbc_sst_1x1.nc   ','amip_sst_1x1.nc     ','cpl_atm_sst.nc      '&
32          ,'histmth_sst.nc      ','sstk.nc             '],                     &
33  fsic(5)=['amipbc_sic_1x1.nc   ','amip_sic_1x1.nc     ','cpl_atm_sic.nc      '&
34          ,'histmth_sic.nc      ','ci.nc               '],                     &
35  vsst(5)=['tosbcs    ','tos       ','SISUTESW  ','tsol_oce  ','sstk      '],  &
36  vsic(5)=['sicbcs    ','sic       ','SIICECOV  ','pourc_sic ','ci        '],  &
37  frugo='Rugos.nc  ', falbe='Albedo.nc ', frelf='Relief.nc ',                  &
38   vrug='RUGOS     ',  valb='ALBEDO    ',  vrel='RELIEF    ',                  &
39  DegK(11)=['degK          ','degree_K      ','degreeK       ','deg_K         '&
40           ,'degsK         ','degrees_K     ','degreesK      ','degs_K        '&
41           ,'degree_kelvin ','degrees_kelvin','K             '],               &
42  DegC(10)=['degC          ','degree_C      ','degreeC       ','deg_C         '&
43           ,'degsC         ','degrees_C     ','degreesC      ','degs_C        '&
44           ,'degree_Celsius','celsius       '], &
45  Perc(2) =['%             ','percent       '], &
46  Frac(2) =['1.0           ','1             ']
47
48CONTAINS
49
50!-------------------------------------------------------------------------------
51!
52SUBROUTINE limit_netcdf(masque, phis, extrap)
53!
54!-------------------------------------------------------------------------------
55! Author : L. Fairhead, 27/01/94
56!-------------------------------------------------------------------------------
57! Purpose: Boundary conditions files building for new model using climatologies.
58!          Both grids have to be regular.
59!-------------------------------------------------------------------------------
60! Note: This routine is designed to work for Earth
61!-------------------------------------------------------------------------------
62! Modification history:
63!  * 23/03/1994: Z. X. Li
64!  *    09/1999: L. Fairhead (netcdf reading in LMDZ.3.3)
65!  *    07/2001: P. Le Van
66!  *    11/2009: L. Guez     (ozone day & night climatos, see etat0_netcdf.F90)
67!  *    12/2009: D. Cugnet   (f77->f90, calendars, files from coupled runs)
68!  *    04/2016: D. Cugnet   (12/14 recs SST/SIC files: cyclic/interannual runs)
69!  *    05/2017: D. Cugnet   (linear time interpolation for BCS files)
70!-------------------------------------------------------------------------------
71#ifndef CPP_1D
72  USE indice_sol_mod
73  USE netcdf,             ONLY: NF90_OPEN,    NF90_CREATE,  NF90_CLOSE,        &
74                  NF90_DEF_DIM, NF90_DEF_VAR, NF90_PUT_VAR, NF90_PUT_ATT,      &
75                  NF90_NOERR,   NF90_NOWRITE, NF90_DOUBLE,  NF90_GLOBAL,       &
76                  NF90_CLOBBER, NF90_ENDDEF,  NF90_UNLIMITED, NF90_FLOAT
77  USE inter_barxy_m,      ONLY: inter_barxy
78  USE netcdf95,           ONLY: nf95_def_var, nf95_put_att, nf95_put_var
79  USE comconst_mod, ONLY: pi
80  USE phys_cal_mod, ONLY: calend
81  IMPLICIT NONE
82!-------------------------------------------------------------------------------
83! Arguments:
84  include "iniprint.h"
85  include "dimensions.h"
86  include "paramet.h"
87  REAL, DIMENSION(iip1,jjp1), INTENT(INOUT) :: masque ! land mask
88  REAL, DIMENSION(iip1,jjp1), INTENT(INOUT) :: phis   ! ground geopotential
89  LOGICAL,                    INTENT(IN)    :: extrap ! SST extrapolation flag
90!-------------------------------------------------------------------------------
91! Local variables:
92  include "comgeom2.h"
93
94!--- INPUT NETCDF FILES AND VARIABLES NAMES ------------------------------------
95  CHARACTER(LEN=ns) :: icefile, sstfile, fnam, varname
96
97!--- OUTPUT VARIABLES FOR NETCDF FILE ------------------------------------------
98  REAL               :: fi_ice(klon)
99  REAL, POINTER      :: phy_rug(:,:)=>NULL(), phy_ice(:,:)=>NULL()
100  REAL, POINTER      :: phy_sst(:,:)=>NULL(), phy_alb(:,:)=>NULL()
101  REAL, ALLOCATABLE  :: phy_bil(:,:), pctsrf_t(:,:,:)
102  INTEGER            :: nbad
103
104!--- VARIABLES FOR OUTPUT FILE WRITING -----------------------------------------
105  INTEGER :: nid, ndim, ntim, k, dims(2), ix_sic, ix_sst
106  INTEGER :: id_tim,  id_SST,  id_BILS, id_RUG, id_ALB
107  INTEGER :: id_FOCE, id_FSIC, id_FTER, id_FLIC, varid_longitude, varid_latitude
108  INTEGER :: NF90_FORMAT
109  INTEGER :: ndays                   !--- Depending on the output calendar
110  CHARACTER(LEN=ns) :: str
111
112!--- INITIALIZATIONS -----------------------------------------------------------
113#ifdef NC_DOUBLE
114  NF90_FORMAT=NF90_DOUBLE
115#else
116  NF90_FORMAT=NF90_FLOAT
117#endif
118  CALL inigeom
119
120!--- MASK, GROUND GEOPOT. & SUBSURFACES COMPUTATION (IN CASE ok_etat0==.FALSE.)
121   IF(ALL(masque==-99999.)) THEN
122    CALL start_init_orog0(rlonv,rlatu,phis,masque)
123    CALL gr_dyn_fi(1,iip1,jjp1,klon,masque,zmasq)          !--- To physical grid
124    ALLOCATE(pctsrf(klon,nbsrf))
125    CALL start_init_subsurf(.FALSE.)
126  !--- TO MATCH EXACTLY WHAT WOULD BE DONE IN etat0phys_netcdf
127    WHERE(   masque(:,:)<EPSFRA) masque(:,:)=0.
128    WHERE(1.-masque(:,:)<EPSFRA) masque(:,:)=1.
129  END IF
130
131!--- Beware: anneeref (from gcm.def) is used to determine output time sampling
132  ndays=year_len(anneeref)
133
134!--- RUGOSITY TREATMENT --------------------------------------------------------
135  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE LA RUGOSITE ***")
136  CALL get_2Dfield(frugo,vrug,'RUG',ndays,phy_rug,mask=masque(1:iim,:))
137
138!--- OCEAN TREATMENT -----------------------------------------------------------
139  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE LA GLACE OCEANIQUE ***")
140
141! Input SIC file selection
142! Open file only to test if available
143  DO ix_sic=1,SIZE(fsic)
144     IF ( NF90_OPEN(TRIM(fsic(ix_sic)),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
145        icefile=fsic(ix_sic); varname=vsic(ix_sic); EXIT
146     END IF
147  END DO
148  IF(ix_sic==SIZE(fsic)+1) THEN
149     WRITE(lunout,*) 'ERROR! No sea-ice input file was found.'
150     WRITE(lunout,*) 'One of following files must be available : '
151     DO k=1,SIZE(fsic); WRITE(lunout,*) TRIM(fsic(k)); END DO
152     CALL abort_physic('limit_netcdf','No sea-ice file was found',1)
153  END IF
154  CALL ncerr(NF90_CLOSE(nid),icefile)
155  CALL msg(0,'Fichier choisi pour la glace de mer:'//TRIM(icefile))
156
157  CALL get_2Dfield(icefile,varname, 'SIC',ndays,phy_ice)
158
159  ALLOCATE(pctsrf_t(klon,nbsrf,ndays))
160  DO k=1,ndays
161     fi_ice=phy_ice(:,k)
162     WHERE(fi_ice>=1.0  ) fi_ice=1.0
163     WHERE(fi_ice<EPSFRA) fi_ice=0.0
164     pctsrf_t(:,is_ter,k)=pctsrf(:,is_ter)       ! land soil
165     pctsrf_t(:,is_lic,k)=pctsrf(:,is_lic)       ! land ice
166     SELECT CASE(ix_sic)
167        CASE(3)                                   ! SIC=pICE*(1-LIC-TER) (CPL)
168        pctsrf_t(:,is_sic,k)=fi_ice(:)*(1.-pctsrf(:,is_lic)-pctsrf(:,is_ter))
169        CASE(4)                                   ! SIC=pICE            (HIST)
170        pctsrf_t(:,is_sic,k)=fi_ice(:)
171        CASE DEFAULT                              ! SIC=pICE-LIC   (AMIP,ERAI)
172        pctsrf_t(:,is_sic,k)=fi_ice-pctsrf_t(:,is_lic,k)
173     END SELECT
174     WHERE(pctsrf_t(:,is_sic,k)<=0) pctsrf_t(:,is_sic,k)=0.
175     WHERE(1.0-zmasq<EPSFRA)
176        pctsrf_t(:,is_sic,k)=0.0
177        pctsrf_t(:,is_oce,k)=0.0
178     ELSEWHERE
179        WHERE(pctsrf_t(:,is_sic,k)>=1.0-zmasq)
180           pctsrf_t(:,is_sic,k)=1.0-zmasq
181           pctsrf_t(:,is_oce,k)=0.0
182        ELSEWHERE
183           pctsrf_t(:,is_oce,k)=1.0-zmasq-pctsrf_t(:,is_sic,k)
184           WHERE(pctsrf_t(:,is_oce,k)<EPSFRA)
185              pctsrf_t(:,is_oce,k)=0.0
186              pctsrf_t(:,is_sic,k)=1.0-zmasq
187           END WHERE
188        END WHERE
189     END WHERE
190     nbad=COUNT(pctsrf_t(:,is_oce,k)<0.0)
191     IF(nbad>0) WRITE(lunout,*) 'pb sous maille pour nb points = ',nbad
192     nbad=COUNT(ABS(SUM(pctsrf_t(:,:,k),DIM=2)-1.0)>EPSFRA)
193     IF(nbad>0) WRITE(lunout,*) 'pb sous surface pour nb points = ',nbad
194  END DO
195  DEALLOCATE(phy_ice)
196
197!--- SST TREATMENT -------------------------------------------------------------
198  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE LA SST ***")
199
200! Input SST file selection
201! Open file only to test if available
202  DO ix_sst=1,SIZE(fsst)
203     IF ( NF90_OPEN(TRIM(fsst(ix_sst)),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
204       sstfile=fsst(ix_sst); varname=vsst(ix_sst); EXIT
205     END IF
206  END DO
207  IF(ix_sst==SIZE(fsst)+1) THEN
208     WRITE(lunout,*) 'ERROR! No sst input file was found.'
209     WRITE(lunout,*) 'One of following files must be available : '
210     DO k=1,SIZE(fsst); WRITE(lunout,*) TRIM(fsst(k)); END DO
211     CALL abort_physic('limit_netcdf','No sst file was found',1)
212  END IF
213  CALL ncerr(NF90_CLOSE(nid),sstfile)
214  CALL msg(0,'Fichier choisi pour la temperature de mer: '//TRIM(sstfile))
215
216  CALL get_2Dfield(sstfile,varname,'SST',ndays,phy_sst,flag=extrap)
217
218!--- ALBEDO TREATMENT ----------------------------------------------------------
219  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE L'ALBEDO ***")
220  CALL get_2Dfield(falbe,valb,'ALB',ndays,phy_alb)
221
222!--- REFERENCE GROUND HEAT FLUX TREATMENT --------------------------------------
223  ALLOCATE(phy_bil(klon,ndays)); phy_bil=0.0
224
225!--- OUTPUT FILE WRITING -------------------------------------------------------
226  CALL msg(0,""); CALL msg(0,' *** Ecriture du fichier limit : debut ***')
227  fnam="limit.nc"
228
229  !--- File creation
230  CALL ncerr(NF90_CREATE(fnam,NF90_CLOBBER,nid),fnam)
231  CALL ncerr(NF90_PUT_ATT(nid,NF90_GLOBAL,"title","Fichier conditions aux limites"),fnam)
232  str='File produced using ce0l executable.'
233  str=TRIM(str)//NEW_LINE(' ')//'Sea Ice Concentration built from'
234  SELECT CASE(ix_sic)
235    CASE(1); str=TRIM(str)//' Amip mid-month boundary condition (BCS).'
236    CASE(2); str=TRIM(str)//' Amip monthly mean observations.'
237    CASE(3); str=TRIM(str)//' IPSL coupled model outputs.'
238    CASE(4); str=TRIM(str)//' LMDZ model outputs.'
239    CASE(5); str=TRIM(str)//' ci.nc file.'
240  END SELECT
241  str=TRIM(str)//NEW_LINE(' ')//'Sea Surface Temperature built from'
242  SELECT CASE(ix_sst)
243    CASE(1); str=TRIM(str)//' Amip mid-month boundary condition (BCS).'
244    CASE(2); str=TRIM(str)//' Amip monthly mean observations.'
245    CASE(3); str=TRIM(str)//' IPSL coupled model outputs.'
246    CASE(4); str=TRIM(str)//' LMDZ model outputs.'
247    CASE(5); str=TRIM(str)//' sstk.nc file.'
248  END SELECT
249  CALL ncerr(NF90_PUT_ATT(nid,NF90_GLOBAL,"history",TRIM(str)),fnam)
250
251  !--- Dimensions creation
252  CALL ncerr(NF90_DEF_DIM(nid,"points_physiques",klon,ndim),fnam)
253  CALL ncerr(NF90_DEF_DIM(nid,"time",NF90_UNLIMITED,ntim),fnam)
254
255  dims=[ndim,ntim]
256
257  !--- Variables creation
258  CALL ncerr(NF90_DEF_VAR(nid,"TEMPS",NF90_FORMAT,[ntim],id_tim),fnam)
259  CALL ncerr(NF90_DEF_VAR(nid,"FOCE", NF90_FORMAT,dims,id_FOCE),fnam)
260  CALL ncerr(NF90_DEF_VAR(nid,"FSIC", NF90_FORMAT,dims,id_FSIC),fnam)
261  CALL ncerr(NF90_DEF_VAR(nid,"FTER", NF90_FORMAT,dims,id_FTER),fnam)
262  CALL ncerr(NF90_DEF_VAR(nid,"FLIC", NF90_FORMAT,dims,id_FLIC),fnam)
263  CALL ncerr(NF90_DEF_VAR(nid,"SST",  NF90_FORMAT,dims,id_SST),fnam)
264  CALL ncerr(NF90_DEF_VAR(nid,"BILS", NF90_FORMAT,dims,id_BILS),fnam)
265  CALL ncerr(NF90_DEF_VAR(nid,"ALB",  NF90_FORMAT,dims,id_ALB),fnam)
266  CALL ncerr(NF90_DEF_VAR(nid,"RUG",  NF90_FORMAT,dims,id_RUG),fnam)
267  call nf95_def_var(nid, "longitude", NF90_FLOAT, ndim, varid_longitude)
268  call nf95_def_var(nid, "latitude",  NF90_FLOAT, ndim, varid_latitude)
269
270  !--- Attributes creation
271  CALL ncerr(NF90_PUT_ATT(nid,id_tim, "title","Jour dans l annee"),fnam)
272  CALL ncerr(NF90_PUT_ATT(nid,id_tim, "calendar",calend),fnam)
273  CALL ncerr(NF90_PUT_ATT(nid,id_FOCE,"title","Fraction ocean"),fnam)
274  CALL ncerr(NF90_PUT_ATT(nid,id_FSIC,"title","Fraction glace de mer"),fnam)
275  CALL ncerr(NF90_PUT_ATT(nid,id_FTER,"title","Fraction terre"),fnam)
276  CALL ncerr(NF90_PUT_ATT(nid,id_FLIC,"title","Fraction land ice"),fnam)
277  CALL ncerr(NF90_PUT_ATT(nid,id_SST ,"title","Temperature superficielle de la mer"),fnam)
278  CALL ncerr(NF90_PUT_ATT(nid,id_BILS,"title","Reference flux de chaleur au sol"),fnam)
279  CALL ncerr(NF90_PUT_ATT(nid,id_ALB, "title","Albedo a la surface"),fnam)
280  CALL ncerr(NF90_PUT_ATT(nid,id_RUG, "title","Rugosite"),fnam)
281
282  call nf95_put_att(nid, varid_longitude, "standard_name", "longitude")
283  call nf95_put_att(nid, varid_longitude, "units", "degrees_east")
284
285  call nf95_put_att(nid, varid_latitude, "standard_name", "latitude")
286  call nf95_put_att(nid, varid_latitude, "units", "degrees_north")
287
288  CALL ncerr(NF90_ENDDEF(nid),fnam)
289
290  !--- Variables saving
291  CALL ncerr(NF90_PUT_VAR(nid,id_tim,[(REAL(k),k=1,ndays)]),fnam)
292  CALL ncerr(NF90_PUT_VAR(nid,id_FOCE,pctsrf_t(:,is_oce,:),[1,1],[klon,ndays]),fnam)
293  CALL ncerr(NF90_PUT_VAR(nid,id_FSIC,pctsrf_t(:,is_sic,:),[1,1],[klon,ndays]),fnam)
294  CALL ncerr(NF90_PUT_VAR(nid,id_FTER,pctsrf_t(:,is_ter,:),[1,1],[klon,ndays]),fnam)
295  CALL ncerr(NF90_PUT_VAR(nid,id_FLIC,pctsrf_t(:,is_lic,:),[1,1],[klon,ndays]),fnam)
296  CALL ncerr(NF90_PUT_VAR(nid,id_SST ,phy_sst(:,:),[1,1],[klon,ndays]),fnam)
297  CALL ncerr(NF90_PUT_VAR(nid,id_BILS,phy_bil(:,:),[1,1],[klon,ndays]),fnam)
298  CALL ncerr(NF90_PUT_VAR(nid,id_ALB ,phy_alb(:,:),[1,1],[klon,ndays]),fnam)
299  CALL ncerr(NF90_PUT_VAR(nid,id_RUG ,phy_rug(:,:),[1,1],[klon,ndays]),fnam)
300  call nf95_put_var(nid, varid_longitude, longitude_deg)
301  call nf95_put_var(nid, varid_latitude, latitude_deg)
302
303  CALL ncerr(NF90_CLOSE(nid),fnam)
304
305  CALL msg(0,""); CALL msg(0,' *** Ecriture du fichier limit : fin ***')
306
307  DEALLOCATE(pctsrf_t,phy_sst,phy_bil,phy_alb,phy_rug)
308
309
310!===============================================================================
311!
312  CONTAINS
313!
314!===============================================================================
315
316
317!-------------------------------------------------------------------------------
318!
319SUBROUTINE get_2Dfield(fnam, varname, mode, ndays, champo, flag, mask)
320!
321!-----------------------------------------------------------------------------
322! Comments:
323!   There are two assumptions concerning the NetCDF files, that are satisfied
324!   with files that are conforming NC convention:
325!     1) The last dimension of the variables used is the time record.
326!     2) Dimensional variables have the same names as corresponding dimensions.
327!-----------------------------------------------------------------------------
328  USE netcdf, ONLY: NF90_OPEN, NF90_INQ_VARID, NF90_INQUIRE_VARIABLE, &
329       NF90_CLOSE, NF90_INQ_DIMID, NF90_INQUIRE_DIMENSION, NF90_GET_VAR, &
330       NF90_GET_ATT
331  USE pchsp_95_m, only: pchsp_95
332  USE pchfe_95_m, only: pchfe_95
333  USE arth_m, only: arth
334  USE indice_sol_mod
335
336  IMPLICIT NONE
337  include "dimensions.h"
338  include "paramet.h"
339  include "comgeom2.h"
340!-----------------------------------------------------------------------------
341! Arguments:
342  CHARACTER(LEN=*),  INTENT(IN)     :: fnam     ! NetCDF file name
343  CHARACTER(LEN=*),  INTENT(IN)     :: varname  ! NetCDF variable name
344  CHARACTER(LEN=*),  INTENT(IN)     :: mode     ! RUG, SIC, SST or ALB
345  INTEGER,           INTENT(IN)     :: ndays    ! current year number of days
346  REAL,    POINTER,  DIMENSION(:, :) :: champo  ! output field = f(t)
347  LOGICAL, OPTIONAL, INTENT(IN)     :: flag     ! extrapol. (SST) old ice (SIC)
348  REAL,    OPTIONAL, DIMENSION(iim, jjp1), INTENT(IN) :: mask
349!------------------------------------------------------------------------------
350! Local variables:
351!--- NetCDF
352  INTEGER           :: ncid, varid        ! NetCDF identifiers
353  CHARACTER(LEN=ns) :: dnam               ! dimension name
354!--- dimensions
355  INTEGER           :: dids(4)            ! NetCDF dimensions identifiers
356  REAL, ALLOCATABLE :: dlon_ini(:)        ! initial longitudes vector
357  REAL, ALLOCATABLE :: dlat_ini(:)        ! initial latitudes  vector
358  REAL, POINTER     :: dlon(:), dlat(:)   ! reordered lon/lat  vectors
359!--- fields
360  INTEGER :: imdep, jmdep, lmdep          ! dimensions of 'champ'
361  REAL, ALLOCATABLE :: champ(:,:)         ! wanted field on initial grid
362  REAL, ALLOCATABLE :: yder(:), timeyear(:)
363  REAL              :: champint(iim,jjp1) ! interpolated field
364  REAL, ALLOCATABLE :: champtime(:,:,:)
365  REAL, ALLOCATABLE :: champan(:,:,:)
366!--- input files
367  CHARACTER(LEN=ns) :: fnam_m, fnam_p     ! previous/next files names
368  CHARACTER(LEN=ns) :: cal_in             ! calendar
369  CHARACTER(LEN=ns) :: units              ! attribute "units" in sic/sst file
370  INTEGER           :: ndays_in           ! number of days
371  REAL              :: value              ! mean/max value near equator
372!--- misc
373  INTEGER           :: i, j, k, l         ! loop counters
374  REAL, ALLOCATABLE :: work(:,:)          ! used for extrapolation
375  CHARACTER(LEN=ns) :: title, mess        ! for messages
376  LOGICAL           :: is_bcs             ! flag for BCS data
377  LOGICAL           :: extrp              ! flag for extrapolation
378  LOGICAL           :: ll
379  REAL              :: chmin, chmax, timeday, al
380  INTEGER ierr, idx
381  integer n_extrap ! number of extrapolated points
382  logical skip
383
384!------------------------------------------------------------------------------
385!---Variables depending on keyword 'mode' -------------------------------------
386  NULLIFY(champo)
387
388  SELECT CASE(mode)
389  CASE('RUG'); title='Rugosite'
390  CASE('SIC'); title='Sea-ice'
391  CASE('SST'); title='SST'
392  CASE('ALB'); title='Albedo'
393  END SELECT
394  extrp=.FALSE.; IF(PRESENT(flag).AND.mode=='SST') extrp=flag
395  is_bcs=(mode=='SIC'.AND.ix_sic==1).OR.(mode=='SST'.AND.ix_sst==1)
396  idx=INDEX(fnam,'.nc')-1
397
398!--- GETTING SOME DIMENSIONAL VARIABLES FROM FILE -----------------------------
399  CALL msg(5,' Now reading file : '//TRIM(fnam))
400  CALL ncerr(NF90_OPEN(fnam, NF90_NOWRITE, ncid),fnam)
401  CALL ncerr(NF90_INQ_VARID(ncid, trim(varname), varid),fnam)
402  CALL ncerr(NF90_INQUIRE_VARIABLE(ncid, varid, dimids=dids),fnam)
403
404!--- Longitude
405  CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(1), name=dnam, len=imdep),fnam)
406  ALLOCATE(dlon_ini(imdep), dlon(imdep))
407  CALL ncerr(NF90_INQ_VARID(ncid, dnam, varid), fnam)
408  CALL ncerr(NF90_GET_VAR(ncid, varid, dlon_ini), fnam)
409  CALL msg(5,'variable '//TRIM(dnam)//' dimension ', imdep)
410
411!--- Latitude
412  CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(2), name=dnam, len=jmdep),fnam)
413  ALLOCATE(dlat_ini(jmdep), dlat(jmdep))
414  CALL ncerr(NF90_INQ_VARID(ncid, dnam, varid), fnam)
415  CALL ncerr(NF90_GET_VAR(ncid, varid, dlat_ini), fnam)
416  CALL msg(5,'variable '//TRIM(dnam)//' dimension ', jmdep)
417
418!--- Time (variable is not needed - it is rebuilt - but calendar is)
419  CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(3), name=dnam, len=lmdep), fnam)
420  ALLOCATE(timeyear(lmdep+2))
421  CALL ncerr(NF90_INQ_VARID(ncid, dnam, varid), fnam)
422  cal_in=' '
423  IF(NF90_GET_ATT(ncid, varid, 'calendar', cal_in)/=NF90_NOERR) THEN
424    SELECT CASE(mode)
425      CASE('RUG', 'ALB'); cal_in='360d'
426      CASE('SIC', 'SST'); cal_in='gregorian'
427    END SELECT
428    CALL msg(0,'WARNING: missing "calendar" attribute for "time" in '&
429     &//TRIM(fnam)//'. Choosing default value.')
430  END IF
431  CALL strclean(cal_in)                     !--- REMOVE (WEIRD) NULL CHARACTERS
432  CALL msg(0,'var, calendar, dim: '//TRIM(dnam)//' '//TRIM(cal_in), lmdep)
433 
434!--- Determining input file number of days, depending on calendar
435  ndays_in=year_len(anneeref, cal_in)
436
437!--- Rebuilding input time vector (field from input file might be unreliable)
438  IF(lmdep==12) THEN
439    timeyear=mid_month(anneeref, cal_in)
440    CALL msg(0,'Monthly input file(s) for '//TRIM(title)//'.')
441  ELSE IF(lmdep==ndays_in) THEN
442    timeyear=[(REAL(k)-0.5,k=0,ndays_in+1)]
443    CALL msg(0,'Daily input file (no time interpolation).')
444  ELSE
445    WRITE(mess,'(a,i3,a,i3,a)')'Mismatching input file: found',lmdep,        &
446      ' records, 12/',ndays_in,' (monthly/daily needed).'
447    CALL abort_physic('mid_month',TRIM(mess),1)
448  END IF
449
450!--- GETTING THE FIELD AND INTERPOLATING IT ----------------------------------
451  ALLOCATE(champ(imdep, jmdep), champtime(iim, jjp1, lmdep+2))
452  IF(extrp) ALLOCATE(work(imdep, jmdep))
453  CALL msg(5,'')
454  CALL msg(5,'READ AND INTERPOLATE HORIZONTALLY ', lmdep, ' FIELDS.')
455  CALL ncerr(NF90_INQ_VARID(ncid, varname, varid), fnam)
456  DO l=1, lmdep
457    CALL ncerr(NF90_GET_VAR(ncid,varid,champ,[1,1,l],[imdep,jmdep,1]),fnam)
458    CALL conf_dat2d(title, dlon_ini, dlat_ini, dlon, dlat, champ, .TRUE.)
459
460    !--- FOR SIC/SST FIELDS ONLY
461    IF(l==1.AND.is_in(mode,['SIC','SST'])) THEN
462
463      !--- DETERMINE THE UNIT: READ FROM FILE OR ASSUMED USING FIELD VALUES
464      ierr=NF90_GET_ATT(ncid, varid, 'units', units)
465      IF(ierr==NF90_NOERR) THEN !--- ATTRIBUTE "units" FOUND IN THE FILE
466        CALL strclean(units)
467        IF(mode=='SIC'.AND.is_in(units,Perc)) units="%"
468        IF(mode=='SIC'.AND.is_in(units,Frac)) units="1"
469        IF(mode=='SST'.AND.is_in(units,DegC)) units="C"
470        IF(mode=='SST'.AND.is_in(units,DegK)) units="K"
471      ELSE                      !--- CHECK THE FIELD VALUES
472        IF(mode=='SIC') value=MAXVAL(champ(:,:))
473        IF(mode=='SST') value=   SUM(champ(:,jmdep/2),DIM=1)/REAL(imdep)
474        IF(mode=='SIC') THEN; units="1"; IF(value>= 10.) units="%"; END IF
475        IF(mode=='SST') THEN; units="C"; IF(value>=100.) units="K"; END IF
476      END IF
477      CALL msg(0,'INPUT FILE '//TRIM(title)//' UNIT IS: "'//TRIM(units)//'".')
478      IF(ierr/=NF90_NOERR) CALL msg(0,'WARNING ! UNIT TO BE CHECKED ! '      &
479        //'No "units" attribute, so only based on the fields values.')
480
481      !--- CHECK VALUES ARE IN THE EXPECTED RANGE
482      SELECT CASE(units)
483        CASE('%'); ll=ANY(champ>100.0+EPSFRA); str='percentages > 100.'
484        CASE('1'); ll=ANY(champ>  1.0+EPSFRA); str='fractions > 1.'
485        CASE('C'); ll=ANY(champ<-100.).OR.ANY(champ> 60.); str='<-100 or >60 DegC'
486        CASE('K'); ll=ANY(champ< 180.).OR.ANY(champ>330.); str='<180 or >330 DegK'
487        CASE DEFAULT; CALL abort_physic(mode, 'Unrecognized '//TRIM(title)   &
488                                                  //' unit: '//TRIM(units),1)
489      END SELECT
490
491      !--- DROPPED FOR BCS DATA (FRACTIONS CAN BE HIGHER THAN 1)
492      IF(ll.AND.ix_sic/=1.AND.mode=='SIC') &
493        CALL abort_physic(mode,'unrealistic '//TRIM(mode)//' found: '//TRIM(str))
494
495    END IF
496
497    IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
498    IF(l==1) THEN
499      CALL msg(5,"--------------------------------------------------------")
500      CALL msg(5,"$$$ Barycentric interpolation for "//TRIM(title)//" $$$")
501      CALL msg(5,"--------------------------------------------------------")
502    END IF
503    IF(mode=='RUG') champ=LOG(champ)
504    CALL inter_barxy(dlon,dlat(:jmdep-1),champ,rlonu(:iim),rlatv,champint)
505    IF(mode=='RUG') THEN
506      champint=EXP(champint)
507      WHERE(NINT(mask)/=1) champint=0.001
508    END IF
509    champtime(:, :, l+1)=champint
510  END DO
511  CALL ncerr(NF90_CLOSE(ncid), fnam)
512
513!--- FIRST RECORD: LAST ONE OF PREVIOUS YEAR (CURRENT YEAR IF UNAVAILABLE)
514  fnam_m=fnam(1:idx)//'_m.nc'
515  IF(NF90_OPEN(fnam_m,NF90_NOWRITE,ncid)==NF90_NOERR) THEN
516    CALL msg(0,'Reading previous year file ("'//TRIM(fnam_m)//'") last record for '//TRIM(title))
517    CALL ncerr(NF90_INQ_VARID(ncid, varname, varid),fnam_m)
518    CALL ncerr(NF90_INQUIRE_VARIABLE(ncid, varid, dimids=dids),fnam_m)
519    CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(3), len=l), fnam_m)
520    CALL ncerr(NF90_GET_VAR(ncid,varid,champ,[1,1,l],[imdep,jmdep,1]),fnam_m)
521    CALL ncerr(NF90_CLOSE(ncid), fnam_m)
522    CALL conf_dat2d(title, dlon_ini, dlat_ini, dlon, dlat, champ, .TRUE.)
523    IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
524    IF(mode=='RUG') champ=LOG(champ)
525    CALL inter_barxy(dlon,dlat(:jmdep-1),champ,rlonu(:iim),rlatv,champint)
526    IF(mode=='RUG') THEN
527      champint=EXP(champint)
528      WHERE(NINT(mask)/=1) champint=0.001
529    END IF
530    champtime(:, :, 1)=champint
531  ELSE
532    CALL msg(0,'Using current year file ("'//TRIM(fnam)//'") last record for '//TRIM(title))
533    champtime(:, :, 1)=champtime(:, :, lmdep+1)
534  END IF
535
536!--- LAST RECORD: FIRST ONE OF NEXT YEAR (CURRENT YEAR IF UNAVAILABLE)
537  fnam_p=fnam(1:idx)//'_p.nc'
538  IF(NF90_OPEN(fnam_p,NF90_NOWRITE,ncid)==NF90_NOERR) THEN
539    CALL msg(0,'Reading next year file ("'//TRIM(fnam_p)//'") first record for '//TRIM(title))
540    CALL ncerr(NF90_INQ_VARID(ncid, varname, varid),fnam_p)
541    CALL ncerr(NF90_GET_VAR(ncid,varid,champ,[1,1,1],[imdep,jmdep,1]),fnam_p)
542    CALL ncerr(NF90_CLOSE(ncid), fnam_p)
543    CALL conf_dat2d(title, dlon_ini, dlat_ini, dlon, dlat, champ, .TRUE.)
544    IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
545    IF(mode=='RUG') champ=LOG(champ)
546    CALL inter_barxy(dlon,dlat(:jmdep-1),champ,rlonu(:iim),rlatv,champint)
547    IF(mode=='RUG') THEN
548      champint=EXP(champint)
549      WHERE(NINT(mask)/=1) champint=0.001
550    END IF
551    champtime(:, :, lmdep+2)=champint
552  ELSE
553    CALL msg(0,'Using current year file ("'//TRIM(fnam)//'") first record for '//TRIM(title))
554    champtime(:, :, lmdep+2)=champtime(:, :, 2)
555  END IF
556  DEALLOCATE(dlon_ini, dlat_ini, dlon, dlat, champ)
557  IF(extrp) DEALLOCATE(work)
558
559!--- TIME INTERPOLATION ------------------------------------------------------
560  IF(prt_level>0) THEN
561     IF(ndays/=ndays_in) THEN
562        WRITE(lunout,*)'DIFFERENT YEAR LENGTHS:'
563        WRITE(lunout,*)' In the  input file: ',ndays_in
564        WRITE(lunout,*)' In the output file: ',ndays
565     END IF
566     IF(lmdep==ndays_in) THEN
567        WRITE(lunout, *)'NO TIME INTERPOLATION.'
568        WRITE(lunout, *)' Daily input file.'
569     ELSE
570        IF(     is_bcs) WRITE(lunout, *)'LINEAR TIME INTERPOLATION.'
571        IF(.NOT.is_bcs) WRITE(lunout, *)'SPLINES TIME INTERPOLATION.'
572        WRITE(lunout, *)' Input time vector: ', timeyear
573        WRITE(lunout, *)' Output time vector: from 0.5 to ', ndays-0.5
574     END IF
575  END IF
576  ALLOCATE(champan(iip1, jjp1, ndays))
577
578  IF(lmdep==ndays_in) THEN  !--- DAILY DATA: NO     TIME INTERPOLATION
579    DO l=1,lmdep
580      champan(1:iim,:,l)=champtime(:,:,l+1)
581    END DO
582  ELSE IF(is_bcs) THEN      !--- BCS   DATA: LINEAR TIME INTERPOLATION
583    l=1
584    DO k=1, ndays
585      timeday = (REAL(k)-0.5)*REAL(ndays_in)/ndays
586      IF(timeyear(l+1)<timeday) l=l+1
587      al=(timeday-timeyear(l))/(timeyear(l+1)-timeyear(l))
588      champan(1:iim,:,k) = champtime(1:iim,:,l)+al*(champtime(1:iim,:,l+1)-champtime(1:iim,:,l))
589    END DO
590  ELSE                      !--- AVE   DATA: SPLINE TIME INTERPOLATION
591     skip = .false.
592     n_extrap = 0
593     ALLOCATE(yder(lmdep+2))
594     DO j=1, jjp1
595       DO i=1, iim
596         yder = pchsp_95(timeyear, champtime(i, j, :), ibeg=2, iend=2, &
597              vc_beg=0., vc_end=0.)
598         CALL pchfe_95(timeyear, champtime(i, j, :), yder, skip, &
599              arth(0.5, real(ndays_in) / ndays, ndays), champan(i, j, :), ierr)
600         if (ierr < 0) stop 1
601         n_extrap = n_extrap + ierr
602       END DO
603     END DO
604     IF(n_extrap /= 0) WRITE(lunout,*) "get_2Dfield pchfe_95: n_extrap = ", n_extrap
605     DEALLOCATE(yder)
606  END IF
607  champan(iip1, :, :)=champan(1, :, :)
608  DEALLOCATE(champtime, timeyear)
609
610!--- Checking the result
611  DO j=1, jjp1
612    CALL minmax(iip1, champan(1, j, 10), chmin, chmax)
613    IF (prt_level>5) WRITE(lunout, *)' ',TRIM(title),' at time 10 ', chmin, chmax, j
614  END DO
615
616!--- SPECIAL FILTER FOR SST: SST>271.38 --------------------------------------
617  IF(mode=='SST') THEN
618    SELECT CASE(units)
619      CASE("K"); CALL msg(0,'SST field is already in kelvins.')
620      CASE("C"); CALL msg(0,'SST field converted from celcius degrees to kelvins.')
621      champan(:, :, :)=champan(:, :, :)+273.15
622    END SELECT
623    CALL msg(0,'Filtering SST: Sea Surface Temperature >= 271.38')
624    WHERE(champan<271.38) champan=271.38
625  END IF
626
627!--- SPECIAL FILTER FOR SIC: 0.0<SIC<1.0 -------------------------------------
628  IF(mode=='SIC') THEN
629    SELECT CASE(units)
630      CASE("1"); CALL msg(0,'SIC field already in fraction of 1')
631      CASE("%"); CALL msg(0,'SIC field converted from percentage to fraction of 1.')
632       champan(:, :, :)=champan(:, :, :)/100.
633    END SELECT
634    CALL msg(0,'Filtering SIC: 0.0 <= Sea-ice <=1.0')
635    WHERE(champan>1.0) champan=1.0
636    WHERE(champan<0.0) champan=0.0
637 END IF
638
639!--- DYNAMICAL TO PHYSICAL GRID ----------------------------------------------
640  ALLOCATE(champo(klon, ndays))
641  DO k=1, ndays
642    CALL gr_dyn_fi(1, iip1, jjp1, klon, champan(1, 1, k), champo(1, k))
643  END DO
644  DEALLOCATE(champan)
645
646END SUBROUTINE get_2Dfield
647!
648!-------------------------------------------------------------------------------
649
650
651!-------------------------------------------------------------------------------
652!
653SUBROUTINE start_init_orog0(lon_in,lat_in,phis,masque)
654!
655!-------------------------------------------------------------------------------
656  USE grid_noro_m, ONLY: grid_noro0
657  IMPLICIT NONE
658!===============================================================================
659! Purpose:  Compute "phis" just like it would be in start_init_orog.
660!===============================================================================
661! Arguments:
662  REAL,             INTENT(IN)    :: lon_in(:), lat_in(:)   ! dim (iml) (jml)
663  REAL,             INTENT(INOUT) :: phis(:,:), masque(:,:) ! dim (iml,jml)
664!-------------------------------------------------------------------------------
665! Local variables:
666  CHARACTER(LEN=ns)  :: modname="start_init_orog0"
667  INTEGER            :: fid, llm_tmp,ttm_tmp, iml,jml, iml_rel,jml_rel, itau(1)
668  REAL               :: lev(1), date, dt, deg2rad
669  REAL, ALLOCATABLE  :: lon_rad(:), lon_ini(:), lon_rel(:,:), relief_hi(:,:)
670  REAL, ALLOCATABLE  :: lat_rad(:), lat_ini(:), lat_rel(:,:)
671!-------------------------------------------------------------------------------
672  iml=assert_eq(SIZE(lon_in),SIZE(phis,1),SIZE(masque,1),TRIM(modname)//" iml")
673  jml=assert_eq(SIZE(lat_in),SIZE(phis,2),SIZE(masque,2),TRIM(modname)//" jml")
674  IF(iml/=iip1) CALL abort_gcm(TRIM(modname),'iml/=iip1',1)
675  IF(jml/=jjp1) CALL abort_gcm(TRIM(modname),'jml/=jjp1',1)
676  pi=2.0*ASIN(1.0); deg2rad=pi/180.0
677  IF(ANY(phis/=-99999.)) RETURN                  !--- phis ALREADY KNOWN
678
679!--- HIGH RESOLUTION OROGRAPHY
680  CALL flininfo(frelf, iml_rel, jml_rel, llm_tmp, ttm_tmp, fid)
681
682  ALLOCATE(lat_rel(iml_rel,jml_rel),lon_rel(iml_rel,jml_rel))
683  CALL flinopen(frelf, .FALSE., iml_rel, jml_rel, llm_tmp, lon_rel, lat_rel,   &
684                lev, ttm_tmp, itau, date, dt, fid)
685  ALLOCATE(relief_hi(iml_rel,jml_rel))
686  CALL flinget(fid, vrel, iml_rel, jml_rel, llm_tmp, ttm_tmp, 1, 1, relief_hi)
687  CALL flinclo(fid)
688
689!--- IF ANGLES ARE IN DEGREES, THEY ARE CONVERTED INTO RADIANS
690  ALLOCATE(lon_ini(iml_rel),lat_ini(jml_rel))
691  lon_ini(:)=lon_rel(:,1); IF(MAXVAL(lon_rel)>pi) lon_ini=lon_ini*deg2rad
692  lat_ini(:)=lat_rel(1,:); IF(MAXVAL(lat_rel)>pi) lat_ini=lat_ini*deg2rad
693
694!--- FIELDS ARE PROCESSED TO BE ON STANDARD ANGULAR DOMAINS
695  ALLOCATE(lon_rad(iml_rel),lat_rad(jml_rel))
696  CALL conf_dat2d(vrel, lon_ini, lat_ini, lon_rad, lat_rad, relief_hi, .FALSE.)
697  DEALLOCATE(lon_ini,lat_ini)
698
699!--- COMPUTING SURFACE GEOPOTENTIAL USING ROUTINE grid_noro0
700  WRITE(lunout,*)
701  WRITE(lunout,*)'*** Compute surface geopotential ***'
702
703!--- CALL OROGRAPHY MODULE (REDUCED VERSION) TO COMPUTE FIELDS
704  CALL grid_noro0(lon_rad, lat_rad, relief_hi, lon_in, lat_in, phis, masque)
705  phis = phis * 9.81
706  phis(iml,:) = phis(1,:)
707  DEALLOCATE(relief_hi,lon_rad,lat_rad)
708
709END SUBROUTINE start_init_orog0
710!
711!-------------------------------------------------------------------------------
712
713
714!-------------------------------------------------------------------------------
715!
716SUBROUTINE msg(lev,str1,i,str2)
717!
718!-------------------------------------------------------------------------------
719! Arguments:
720  INTEGER,                    INTENT(IN) :: lev
721  CHARACTER(LEN=*),           INTENT(IN) :: str1
722  INTEGER,          OPTIONAL, INTENT(IN) :: i
723  CHARACTER(LEN=*), OPTIONAL, INTENT(IN) :: str2
724!-------------------------------------------------------------------------------
725  IF(prt_level>=lev) THEN
726    IF(PRESENT(str2)) THEN
727      WRITE(lunout,*) TRIM(str1), i, TRIM(str2)
728    ELSE IF(PRESENT(i)) THEN
729      WRITE(lunout,*) TRIM(str1), i
730    ELSE
731      WRITE(lunout,*) TRIM(str1)
732    END IF
733  END IF
734
735END SUBROUTINE msg
736!
737!-------------------------------------------------------------------------------
738
739
740!-------------------------------------------------------------------------------
741!
742SUBROUTINE ncerr(ncres,fnam)
743!
744!-------------------------------------------------------------------------------
745! Purpose: NetCDF errors handling.
746!-------------------------------------------------------------------------------
747  USE netcdf, ONLY : NF90_NOERR, NF90_STRERROR
748  IMPLICIT NONE
749!-------------------------------------------------------------------------------
750! Arguments:
751  INTEGER,          INTENT(IN) :: ncres
752  CHARACTER(LEN=*), INTENT(IN) :: fnam
753!-------------------------------------------------------------------------------
754  IF(ncres/=NF90_NOERR) THEN
755    WRITE(lunout,*)'Problem with file '//TRIM(fnam)//' in routine limit_netcdf.'
756    CALL abort_physic('limit_netcdf',NF90_STRERROR(ncres),1)
757  END IF
758
759END SUBROUTINE ncerr
760!
761!-------------------------------------------------------------------------------
762
763
764!-------------------------------------------------------------------------------
765!
766SUBROUTINE strclean(s)
767!
768!-------------------------------------------------------------------------------
769  IMPLICIT NONE
770!-------------------------------------------------------------------------------
771! Purpose: Remove tail null characters from the input string.
772!-------------------------------------------------------------------------------
773! Parameters:
774  CHARACTER(LEN=*), INTENT(INOUT) :: s
775!-------------------------------------------------------------------------------
776! Local variable:
777  INTEGER :: k
778!-------------------------------------------------------------------------------
779  k=LEN_TRIM(s); DO WHILE(ICHAR(s(k:k))==0); s(k:k)=' '; k=LEN_TRIM(s); END DO
780
781END SUBROUTINE strclean
782!
783!-------------------------------------------------------------------------------
784
785
786!-------------------------------------------------------------------------------
787!
788FUNCTION is_in(s1,s2) RESULT(res)
789!
790!-------------------------------------------------------------------------------
791  IMPLICIT NONE
792!-------------------------------------------------------------------------------
793! Purpose: Check wether s1 is present in the s2(:) list (case insensitive).
794!-------------------------------------------------------------------------------
795! Arguments:
796  CHARACTER(LEN=*), INTENT(IN) :: s1, s2(:)
797  LOGICAL                      :: res
798!-------------------------------------------------------------------------------
799  res=.FALSE.; DO k=1,SIZE(s2); res=res.OR.strLow(s1)==strLow(s2(k)); END DO
800
801END FUNCTION is_in
802!
803!-------------------------------------------------------------------------------
804
805
806!-------------------------------------------------------------------------------
807!
808ELEMENTAL FUNCTION strLow(s) RESULT(res)
809!
810!-------------------------------------------------------------------------------
811  IMPLICIT NONE
812!-------------------------------------------------------------------------------
813! Purpose: Lower case conversion.
814!-------------------------------------------------------------------------------
815! Arguments:
816  CHARACTER(LEN=*), INTENT(IN) :: s
817  CHARACTER(LEN=ns)            :: res
818!-------------------------------------------------------------------------------
819! Local variable:
820  INTEGER :: k, ix
821!-------------------------------------------------------------------------------
822  res=s
823  DO k=1,LEN(s); ix=IACHAR(s(k:k))
824    IF(64<ix.AND.ix<91) res(k:k)=ACHAR(ix+32)
825  END DO
826
827END FUNCTION strLow
828!
829!-------------------------------------------------------------------------------
830
831#endif
832! of #ifndef CPP_1D
833END SUBROUTINE limit_netcdf
834
835END MODULE limit
836!
837!*******************************************************************************
838
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