source: LMDZ6/trunk/libf/dynphy_lonlat/phylmd/limit_netcdf.F90 @ 5423

Last change on this file since 5423 was 5285, checked in by abarral, 2 months ago

As discussed internally, remove generic ONLY: ... for new _mod_h modules

  • 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 iniprint_mod_h
73  USE comgeom2_mod_h
74  USE indice_sol_mod
75  USE netcdf,             ONLY: NF90_OPEN,    NF90_CREATE,  NF90_CLOSE,        &
76                  NF90_DEF_DIM, NF90_DEF_VAR, NF90_PUT_VAR, NF90_PUT_ATT,      &
77                  NF90_NOERR,   NF90_NOWRITE, NF90_DOUBLE,  NF90_GLOBAL,       &
78                  NF90_CLOBBER, NF90_ENDDEF,  NF90_UNLIMITED, NF90_FLOAT,      &
79                  NF90_64BIT_OFFSET
80  USE inter_barxy_m,      ONLY: inter_barxy
81  USE netcdf95,           ONLY: nf95_def_var, nf95_put_att, nf95_put_var
82  USE comconst_mod, ONLY: pi
83  USE phys_cal_mod, ONLY: calend
84  USE lmdz_cppkeys_wrapper, ONLY: nf90_format
85  USE dimensions_mod, ONLY: iim, jjm, llm, ndm
86  USE paramet_mod_h
87  USE comgeom2_mod_h
88  IMPLICIT NONE
89!-------------------------------------------------------------------------------
90! Arguments:
91
92
93  REAL, DIMENSION(iip1,jjp1), INTENT(INOUT) :: masque ! land mask
94  REAL, DIMENSION(iip1,jjp1), INTENT(INOUT) :: phis   ! ground geopotential
95  LOGICAL,                    INTENT(IN)    :: extrap ! SST extrapolation flag
96
97!--- INPUT NETCDF FILES AND VARIABLES NAMES ------------------------------------
98  CHARACTER(LEN=ns) :: icefile, sstfile, fnam, varname
99
100!--- OUTPUT VARIABLES FOR NETCDF FILE ------------------------------------------
101  REAL               :: fi_ice(klon)
102  REAL, POINTER      :: phy_rug(:,:)=>NULL(), phy_ice(:,:)=>NULL()
103  REAL, POINTER      :: phy_sst(:,:)=>NULL(), phy_alb(:,:)=>NULL()
104  REAL, ALLOCATABLE  :: phy_bil(:,:), pctsrf_t(:,:,:)
105  INTEGER            :: nbad
106
107!--- VARIABLES FOR OUTPUT FILE WRITING -----------------------------------------
108  INTEGER :: nid, ndim, ntim, k, dims(2), ix_sic, ix_sst
109  INTEGER :: id_tim,  id_SST,  id_BILS, id_RUG, id_ALB
110  INTEGER :: id_FOCE, id_FSIC, id_FTER, id_FLIC, varid_longitude, varid_latitude
111  INTEGER :: ndays                   !--- Depending on the output calendar
112  CHARACTER(LEN=ns) :: str
113
114!--- INITIALIZATIONS -----------------------------------------------------------
115  CALL inigeom
116
117!--- MASK, GROUND GEOPOT. & SUBSURFACES COMPUTATION (IN CASE ok_etat0==.FALSE.)
118   IF(ALL(masque==-99999.)) THEN
119    CALL start_init_orog0(rlonv,rlatu,phis,masque)
120    CALL gr_dyn_fi(1,iip1,jjp1,klon,masque,zmasq)          !--- To physical grid
121    ALLOCATE(pctsrf(klon,nbsrf))
122    CALL start_init_subsurf(.FALSE.)
123  !--- TO MATCH EXACTLY WHAT WOULD BE DONE IN etat0phys_netcdf
124    WHERE(   masque(:,:)<EPSFRA) masque(:,:)=0.
125    WHERE(1.-masque(:,:)<EPSFRA) masque(:,:)=1.
126  END IF
127
128!--- Beware: anneeref (from gcm.def) is used to determine output time sampling
129  ndays=year_len(anneeref)
130
131!--- RUGOSITY TREATMENT --------------------------------------------------------
132  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE LA RUGOSITE ***")
133  CALL get_2Dfield(frugo,vrug,'RUG',ndays,phy_rug,mask=masque(1:iim,:))
134
135!--- OCEAN TREATMENT -----------------------------------------------------------
136  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE LA GLACE OCEANIQUE ***")
137
138! Input SIC file selection
139! Open file only to test if available
140  DO ix_sic=1,SIZE(fsic)
141     IF ( NF90_OPEN(TRIM(fsic(ix_sic)),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
142        icefile=fsic(ix_sic); varname=vsic(ix_sic); EXIT
143     END IF
144  END DO
145  IF(ix_sic==SIZE(fsic)+1) THEN
146     WRITE(lunout,*) 'ERROR! No sea-ice input file was found.'
147     WRITE(lunout,*) 'One of following files must be available : '
148     DO k=1,SIZE(fsic); WRITE(lunout,*) TRIM(fsic(k)); END DO
149     CALL abort_physic('limit_netcdf','No sea-ice file was found',1)
150  END IF
151  CALL ncerr(NF90_CLOSE(nid),icefile)
152  CALL msg(0,'Fichier choisi pour la glace de mer:'//TRIM(icefile))
153
154  CALL get_2Dfield(icefile,varname, 'SIC',ndays,phy_ice)
155
156  ALLOCATE(pctsrf_t(klon,nbsrf,ndays))
157  DO k=1,ndays
158     fi_ice=phy_ice(:,k)
159     WHERE(fi_ice>=1.0  ) fi_ice=1.0
160     WHERE(fi_ice<EPSFRA) fi_ice=0.0
161     pctsrf_t(:,is_ter,k)=pctsrf(:,is_ter)       ! land soil
162     pctsrf_t(:,is_lic,k)=pctsrf(:,is_lic)       ! land ice
163     SELECT CASE(ix_sic)
164        CASE(3)                                   ! SIC=pICE*(1-LIC-TER) (CPL)
165        pctsrf_t(:,is_sic,k)=fi_ice(:)*(1.-pctsrf(:,is_lic)-pctsrf(:,is_ter))
166        CASE(4)                                   ! SIC=pICE            (HIST)
167        pctsrf_t(:,is_sic,k)=fi_ice(:)
168        CASE DEFAULT                              ! SIC=pICE-LIC   (AMIP,ERAI)
169        pctsrf_t(:,is_sic,k)=fi_ice-pctsrf_t(:,is_lic,k)
170     END SELECT
171     WHERE(pctsrf_t(:,is_sic,k)<=0) pctsrf_t(:,is_sic,k)=0.
172     WHERE(1.0-zmasq<EPSFRA)
173        pctsrf_t(:,is_sic,k)=0.0
174        pctsrf_t(:,is_oce,k)=0.0
175     ELSEWHERE
176        WHERE(pctsrf_t(:,is_sic,k)>=1.0-zmasq)
177           pctsrf_t(:,is_sic,k)=1.0-zmasq
178           pctsrf_t(:,is_oce,k)=0.0
179        ELSEWHERE
180           pctsrf_t(:,is_oce,k)=1.0-zmasq-pctsrf_t(:,is_sic,k)
181           WHERE(pctsrf_t(:,is_oce,k)<EPSFRA)
182              pctsrf_t(:,is_oce,k)=0.0
183              pctsrf_t(:,is_sic,k)=1.0-zmasq
184           END WHERE
185        END WHERE
186     END WHERE
187     nbad=COUNT(pctsrf_t(:,is_oce,k)<0.0)
188     IF(nbad>0) WRITE(lunout,*) 'pb sous maille pour nb points = ',nbad
189     nbad=COUNT(ABS(SUM(pctsrf_t(:,:,k),DIM=2)-1.0)>EPSFRA)
190     IF(nbad>0) WRITE(lunout,*) 'pb sous surface pour nb points = ',nbad
191  END DO
192  DEALLOCATE(phy_ice)
193
194!--- SST TREATMENT -------------------------------------------------------------
195  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE LA SST ***")
196
197! Input SST file selection
198! Open file only to test if available
199  DO ix_sst=1,SIZE(fsst)
200     IF ( NF90_OPEN(TRIM(fsst(ix_sst)),NF90_NOWRITE,nid)==NF90_NOERR ) THEN
201       sstfile=fsst(ix_sst); varname=vsst(ix_sst); EXIT
202     END IF
203  END DO
204  IF(ix_sst==SIZE(fsst)+1) THEN
205     WRITE(lunout,*) 'ERROR! No sst input file was found.'
206     WRITE(lunout,*) 'One of following files must be available : '
207     DO k=1,SIZE(fsst); WRITE(lunout,*) TRIM(fsst(k)); END DO
208     CALL abort_physic('limit_netcdf','No sst file was found',1)
209  END IF
210  CALL ncerr(NF90_CLOSE(nid),sstfile)
211  CALL msg(0,'Fichier choisi pour la temperature de mer: '//TRIM(sstfile))
212
213  CALL get_2Dfield(sstfile,varname,'SST',ndays,phy_sst,flag=extrap)
214
215!--- ALBEDO TREATMENT ----------------------------------------------------------
216  CALL msg(0,""); CALL msg(0," *** TRAITEMENT DE L'ALBEDO ***")
217  CALL get_2Dfield(falbe,valb,'ALB',ndays,phy_alb)
218
219!--- REFERENCE GROUND HEAT FLUX TREATMENT --------------------------------------
220  ALLOCATE(phy_bil(klon,ndays)); phy_bil=0.0
221
222!--- OUTPUT FILE WRITING -------------------------------------------------------
223  CALL msg(0,""); CALL msg(0,' *** Ecriture du fichier limit : debut ***')
224  fnam="limit.nc"
225
226  !--- File creation
227  CALL ncerr(NF90_CREATE(fnam,IOR(NF90_CLOBBER,NF90_64BIT_OFFSET),nid),fnam)
228  CALL ncerr(NF90_PUT_ATT(nid,NF90_GLOBAL,"title","Fichier conditions aux limites"),fnam)
229  str='File produced using ce0l executable.'
230  str=TRIM(str)//NEW_LINE(' ')//'Sea Ice Concentration built from'
231  SELECT CASE(ix_sic)
232    CASE(1); str=TRIM(str)//' Amip mid-month boundary condition (BCS).'
233    CASE(2); str=TRIM(str)//' Amip monthly mean observations.'
234    CASE(3); str=TRIM(str)//' IPSL coupled model outputs.'
235    CASE(4); str=TRIM(str)//' LMDZ model outputs.'
236    CASE(5); str=TRIM(str)//' ci.nc file.'
237  END SELECT
238  str=TRIM(str)//NEW_LINE(' ')//'Sea Surface Temperature built from'
239  SELECT CASE(ix_sst)
240    CASE(1); str=TRIM(str)//' Amip mid-month boundary condition (BCS).'
241    CASE(2); str=TRIM(str)//' Amip monthly mean observations.'
242    CASE(3); str=TRIM(str)//' IPSL coupled model outputs.'
243    CASE(4); str=TRIM(str)//' LMDZ model outputs.'
244    CASE(5); str=TRIM(str)//' sstk.nc file.'
245  END SELECT
246  CALL ncerr(NF90_PUT_ATT(nid,NF90_GLOBAL,"history",TRIM(str)),fnam)
247
248  !--- Dimensions creation
249  CALL ncerr(NF90_DEF_DIM(nid,"points_physiques",klon,ndim),fnam)
250  CALL ncerr(NF90_DEF_DIM(nid,"time",NF90_UNLIMITED,ntim),fnam)
251
252  dims=[ndim,ntim]
253
254  !--- Variables creation
255  CALL ncerr(NF90_DEF_VAR(nid,"TEMPS",NF90_FORMAT,[ntim],id_tim),fnam)
256  CALL ncerr(NF90_DEF_VAR(nid,"FOCE", NF90_FORMAT,dims,id_FOCE),fnam)
257  CALL ncerr(NF90_DEF_VAR(nid,"FSIC", NF90_FORMAT,dims,id_FSIC),fnam)
258  CALL ncerr(NF90_DEF_VAR(nid,"FTER", NF90_FORMAT,dims,id_FTER),fnam)
259  CALL ncerr(NF90_DEF_VAR(nid,"FLIC", NF90_FORMAT,dims,id_FLIC),fnam)
260  CALL ncerr(NF90_DEF_VAR(nid,"SST",  NF90_FORMAT,dims,id_SST),fnam)
261  CALL ncerr(NF90_DEF_VAR(nid,"BILS", NF90_FORMAT,dims,id_BILS),fnam)
262  CALL ncerr(NF90_DEF_VAR(nid,"ALB",  NF90_FORMAT,dims,id_ALB),fnam)
263  CALL ncerr(NF90_DEF_VAR(nid,"RUG",  NF90_FORMAT,dims,id_RUG),fnam)
264  call nf95_def_var(nid, "longitude", NF90_FLOAT, ndim, varid_longitude)
265  call nf95_def_var(nid, "latitude",  NF90_FLOAT, ndim, varid_latitude)
266
267  !--- Attributes creation
268  CALL ncerr(NF90_PUT_ATT(nid,id_tim, "title","Jour dans l annee"),fnam)
269  CALL ncerr(NF90_PUT_ATT(nid,id_tim, "calendar",calend),fnam)
270  CALL ncerr(NF90_PUT_ATT(nid,id_FOCE,"title","Fraction ocean"),fnam)
271  CALL ncerr(NF90_PUT_ATT(nid,id_FSIC,"title","Fraction glace de mer"),fnam)
272  CALL ncerr(NF90_PUT_ATT(nid,id_FTER,"title","Fraction terre"),fnam)
273  CALL ncerr(NF90_PUT_ATT(nid,id_FLIC,"title","Fraction land ice"),fnam)
274  CALL ncerr(NF90_PUT_ATT(nid,id_SST ,"title","Temperature superficielle de la mer"),fnam)
275  CALL ncerr(NF90_PUT_ATT(nid,id_BILS,"title","Reference flux de chaleur au sol"),fnam)
276  CALL ncerr(NF90_PUT_ATT(nid,id_ALB, "title","Albedo a la surface"),fnam)
277  CALL ncerr(NF90_PUT_ATT(nid,id_RUG, "title","Rugosite"),fnam)
278
279  call nf95_put_att(nid, varid_longitude, "standard_name", "longitude")
280  call nf95_put_att(nid, varid_longitude, "units", "degrees_east")
281
282  call nf95_put_att(nid, varid_latitude, "standard_name", "latitude")
283  call nf95_put_att(nid, varid_latitude, "units", "degrees_north")
284
285  CALL ncerr(NF90_ENDDEF(nid),fnam)
286
287  !--- Variables saving
288  CALL ncerr(NF90_PUT_VAR(nid,id_tim,[(REAL(k),k=1,ndays)]),fnam)
289  CALL ncerr(NF90_PUT_VAR(nid,id_FOCE,pctsrf_t(:,is_oce,:),[1,1],[klon,ndays]),fnam)
290  CALL ncerr(NF90_PUT_VAR(nid,id_FSIC,pctsrf_t(:,is_sic,:),[1,1],[klon,ndays]),fnam)
291  CALL ncerr(NF90_PUT_VAR(nid,id_FTER,pctsrf_t(:,is_ter,:),[1,1],[klon,ndays]),fnam)
292  CALL ncerr(NF90_PUT_VAR(nid,id_FLIC,pctsrf_t(:,is_lic,:),[1,1],[klon,ndays]),fnam)
293  CALL ncerr(NF90_PUT_VAR(nid,id_SST ,phy_sst(:,:),[1,1],[klon,ndays]),fnam)
294  CALL ncerr(NF90_PUT_VAR(nid,id_BILS,phy_bil(:,:),[1,1],[klon,ndays]),fnam)
295  CALL ncerr(NF90_PUT_VAR(nid,id_ALB ,phy_alb(:,:),[1,1],[klon,ndays]),fnam)
296  CALL ncerr(NF90_PUT_VAR(nid,id_RUG ,phy_rug(:,:),[1,1],[klon,ndays]),fnam)
297  call nf95_put_var(nid, varid_longitude, longitude_deg)
298  call nf95_put_var(nid, varid_latitude, latitude_deg)
299
300  CALL ncerr(NF90_CLOSE(nid),fnam)
301
302  CALL msg(0,""); CALL msg(0,' *** Ecriture du fichier limit : fin ***')
303
304  DEALLOCATE(pctsrf_t,phy_sst,phy_bil,phy_alb,phy_rug)
305
306
307!===============================================================================
308!
309  CONTAINS
310!
311!===============================================================================
312
313
314!-------------------------------------------------------------------------------
315!
316SUBROUTINE get_2Dfield(fnam, varname, mode, ndays, champo, flag, mask)
317!
318!-----------------------------------------------------------------------------
319! Comments:
320!   There are two assumptions concerning the NetCDF files, that are satisfied
321!   with files that are conforming NC convention:
322!     1) The last dimension of the variables used is the time record.
323!     2) Dimensional variables have the same names as corresponding dimensions.
324!-----------------------------------------------------------------------------
325  USE netcdf, ONLY: NF90_OPEN, NF90_INQ_VARID, NF90_INQUIRE_VARIABLE, &
326       NF90_CLOSE, NF90_INQ_DIMID, NF90_INQUIRE_DIMENSION, NF90_GET_VAR, &
327       NF90_GET_ATT
328  USE pchsp_95_m, only: pchsp_95
329  USE pchfe_95_m, only: pchfe_95
330  USE arth_m, only: arth
331  USE indice_sol_mod
332
333  USE dimensions_mod, ONLY: iim, jjm, llm, ndm
334USE paramet_mod_h
335IMPLICIT NONE
336
337
338!-----------------------------------------------------------------------------
339! Arguments:
340  CHARACTER(LEN=*),  INTENT(IN)     :: fnam     ! NetCDF file name
341  CHARACTER(LEN=*),  INTENT(IN)     :: varname  ! NetCDF variable name
342  CHARACTER(LEN=*),  INTENT(IN)     :: mode     ! RUG, SIC, SST or ALB
343  INTEGER,           INTENT(IN)     :: ndays    ! current year number of days
344  REAL,    POINTER,  DIMENSION(:, :) :: champo  ! output field = f(t)
345  LOGICAL, OPTIONAL, INTENT(IN)     :: flag     ! extrapol. (SST) old ice (SIC)
346  REAL,    OPTIONAL, DIMENSION(iim, jjp1), INTENT(IN) :: mask
347!------------------------------------------------------------------------------
348! Local variables:
349!--- NetCDF
350  INTEGER           :: ncid, varid        ! NetCDF identifiers
351  CHARACTER(LEN=ns) :: dnam               ! dimension name
352!--- dimensions
353  INTEGER           :: dids(4)            ! NetCDF dimensions identifiers
354  REAL, ALLOCATABLE :: dlon_ini(:)        ! initial longitudes vector
355  REAL, ALLOCATABLE :: dlat_ini(:)        ! initial latitudes  vector
356  REAL, POINTER     :: dlon(:), dlat(:)   ! reordered lon/lat  vectors
357!--- fields
358  INTEGER :: imdep, jmdep, lmdep          ! dimensions of 'champ'
359  REAL, ALLOCATABLE :: champ(:,:)         ! wanted field on initial grid
360  REAL, ALLOCATABLE :: yder(:), timeyear(:)
361  REAL              :: champint(iim,jjp1) ! interpolated field
362  REAL, ALLOCATABLE :: champtime(:,:,:)
363  REAL, ALLOCATABLE :: champan(:,:,:)
364!--- input files
365  CHARACTER(LEN=ns) :: fnam_m, fnam_p     ! previous/next files names
366  CHARACTER(LEN=ns) :: cal_in             ! calendar
367  CHARACTER(LEN=ns) :: units              ! attribute "units" in sic/sst file
368  INTEGER           :: ndays_in           ! number of days
369  REAL              :: value              ! mean/max value near equator
370!--- misc
371  INTEGER           :: i, j, k, l         ! loop counters
372  REAL, ALLOCATABLE :: work(:,:)          ! used for extrapolation
373  CHARACTER(LEN=ns) :: title, mess        ! for messages
374  LOGICAL           :: is_bcs             ! flag for BCS data
375  LOGICAL           :: extrp              ! flag for extrapolation
376  LOGICAL           :: ll
377  REAL              :: chmin, chmax, timeday, al
378  INTEGER ierr, idx
379  integer n_extrap ! number of extrapolated points
380  logical skip
381
382!------------------------------------------------------------------------------
383!---Variables depending on keyword 'mode' -------------------------------------
384  NULLIFY(champo)
385
386  SELECT CASE(mode)
387  CASE('RUG'); title='Rugosite'
388  CASE('SIC'); title='Sea-ice'
389  CASE('SST'); title='SST'
390  CASE('ALB'); title='Albedo'
391  END SELECT
392  extrp=.FALSE.; IF(PRESENT(flag).AND.mode=='SST') extrp=flag
393  is_bcs=(mode=='SIC'.AND.ix_sic==1).OR.(mode=='SST'.AND.ix_sst==1)
394  idx=INDEX(fnam,'.nc')-1
395
396!--- GETTING SOME DIMENSIONAL VARIABLES FROM FILE -----------------------------
397  CALL msg(5,' Now reading file : '//TRIM(fnam))
398  CALL ncerr(NF90_OPEN(fnam, NF90_NOWRITE, ncid),fnam)
399  CALL ncerr(NF90_INQ_VARID(ncid, trim(varname), varid),fnam)
400  CALL ncerr(NF90_INQUIRE_VARIABLE(ncid, varid, dimids=dids),fnam)
401
402!--- Longitude
403  CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(1), name=dnam, len=imdep),fnam)
404  ALLOCATE(dlon_ini(imdep), dlon(imdep))
405  CALL ncerr(NF90_INQ_VARID(ncid, dnam, varid), fnam)
406  CALL ncerr(NF90_GET_VAR(ncid, varid, dlon_ini), fnam)
407  CALL msg(5,'variable '//TRIM(dnam)//' dimension ', imdep)
408
409!--- Latitude
410  CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(2), name=dnam, len=jmdep),fnam)
411  ALLOCATE(dlat_ini(jmdep), dlat(jmdep))
412  CALL ncerr(NF90_INQ_VARID(ncid, dnam, varid), fnam)
413  CALL ncerr(NF90_GET_VAR(ncid, varid, dlat_ini), fnam)
414  CALL msg(5,'variable '//TRIM(dnam)//' dimension ', jmdep)
415
416!--- Time (variable is not needed - it is rebuilt - but calendar is)
417  CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(3), name=dnam, len=lmdep), fnam)
418  ALLOCATE(timeyear(lmdep+2))
419  CALL ncerr(NF90_INQ_VARID(ncid, dnam, varid), fnam)
420  cal_in=' '
421  IF(NF90_GET_ATT(ncid, varid, 'calendar', cal_in)/=NF90_NOERR) THEN
422    SELECT CASE(mode)
423      CASE('RUG', 'ALB'); cal_in='360_day'
424      CASE('SIC', 'SST'); cal_in='gregorian'
425    END SELECT
426    CALL msg(0,'WARNING: missing "calendar" attribute for "time" in '&
427     &//TRIM(fnam)//'. Choosing default value.')
428  END IF
429  CALL strclean(cal_in)                     !--- REMOVE (WEIRD) NULL CHARACTERS
430  CALL msg(0,'var, calendar, dim: '//TRIM(dnam)//' '//TRIM(cal_in), lmdep)
431 
432!--- Determining input file number of days, depending on calendar
433  ndays_in=year_len(anneeref, cal_in)
434
435!--- Rebuilding input time vector (field from input file might be unreliable)
436  IF(lmdep==12) THEN
437    timeyear=mid_month(anneeref, cal_in)
438    CALL msg(0,'Monthly input file(s) for '//TRIM(title)//'.')
439  ELSE IF(lmdep==ndays_in) THEN
440    timeyear=[(REAL(k)-0.5,k=0,ndays_in+1)]
441    CALL msg(0,'Daily input file (no time interpolation).')
442  ELSE
443    WRITE(mess,'(a,i3,a,i3,a)')'Mismatching input file: found',lmdep,        &
444      ' records, 12/',ndays_in,' (monthly/daily needed).'
445    CALL abort_physic('mid_month',TRIM(mess),1)
446  END IF
447
448!--- GETTING THE FIELD AND INTERPOLATING IT ----------------------------------
449  ALLOCATE(champ(imdep, jmdep), champtime(iim, jjp1, lmdep+2))
450  IF(extrp) ALLOCATE(work(imdep, jmdep))
451  CALL msg(5,'')
452  CALL msg(5,'READ AND INTERPOLATE HORIZONTALLY ', lmdep, ' FIELDS.')
453  CALL ncerr(NF90_INQ_VARID(ncid, varname, varid), fnam)
454  DO l=1, lmdep
455    CALL ncerr(NF90_GET_VAR(ncid,varid,champ,[1,1,l],[imdep,jmdep,1]),fnam)
456    CALL conf_dat2d(title, dlon_ini, dlat_ini, dlon, dlat, champ, .TRUE.)
457
458    !--- FOR SIC/SST FIELDS ONLY
459    IF(l==1.AND.is_in(mode,['SIC','SST'])) THEN
460
461      !--- DETERMINE THE UNIT: READ FROM FILE OR ASSUMED USING FIELD VALUES
462      ierr=NF90_GET_ATT(ncid, varid, 'units', units)
463      IF(ierr==NF90_NOERR) THEN !--- ATTRIBUTE "units" FOUND IN THE FILE
464        CALL strclean(units)
465        IF(mode=='SIC'.AND.is_in(units,Perc)) units="%"
466        IF(mode=='SIC'.AND.is_in(units,Frac)) units="1"
467        IF(mode=='SST'.AND.is_in(units,DegC)) units="C"
468        IF(mode=='SST'.AND.is_in(units,DegK)) units="K"
469      ELSE                      !--- CHECK THE FIELD VALUES
470        IF(mode=='SIC') value=MAXVAL(champ(:,:))
471        IF(mode=='SST') value=   SUM(champ(:,jmdep/2),DIM=1)/REAL(imdep)
472        IF(mode=='SIC') THEN; units="1"; IF(value>= 10.) units="%"; END IF
473        IF(mode=='SST') THEN; units="C"; IF(value>=100.) units="K"; END IF
474      END IF
475      CALL msg(0,'INPUT FILE '//TRIM(title)//' UNIT IS: "'//TRIM(units)//'".')
476      IF(ierr/=NF90_NOERR) CALL msg(0,'WARNING ! UNIT TO BE CHECKED ! '      &
477        //'No "units" attribute, so only based on the fields values.')
478
479      !--- CHECK VALUES ARE IN THE EXPECTED RANGE
480      SELECT CASE(units)
481        CASE('%'); ll=ANY(champ>100.0+EPSFRA); str='percentages > 100.'
482        CASE('1'); ll=ANY(champ>  1.0+EPSFRA); str='fractions > 1.'
483        CASE('C'); ll=ANY(champ<-100.).OR.ANY(champ> 60.); str='<-100 or >60 DegC'
484        CASE('K'); ll=ANY(champ< 180.).OR.ANY(champ>330.); str='<180 or >330 DegK'
485        CASE DEFAULT; CALL abort_physic(mode, 'Unrecognized '//TRIM(title)   &
486                                                  //' unit: '//TRIM(units),1)
487      END SELECT
488
489      !--- DROPPED FOR BCS DATA (FRACTIONS CAN BE HIGHER THAN 1)
490      IF(ll.AND.ix_sic/=1.AND.mode=='SIC') &
491        CALL abort_physic(mode,'unrealistic '//TRIM(mode)//' found: '//TRIM(str), 1)
492
493    END IF
494
495    IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
496    IF(l==1) THEN
497      CALL msg(5,"--------------------------------------------------------")
498      CALL msg(5,"$$$ Barycentric interpolation for "//TRIM(title)//" $$$")
499      CALL msg(5,"--------------------------------------------------------")
500    END IF
501    IF(mode=='RUG') champ=LOG(champ)
502    CALL inter_barxy(dlon,dlat(:jmdep-1),champ,rlonu(:iim),rlatv,champint)
503    IF(mode=='RUG') THEN
504      champint=EXP(champint)
505      WHERE(NINT(mask)/=1) champint=0.001
506    END IF
507    champtime(:, :, l+1)=champint
508  END DO
509  CALL ncerr(NF90_CLOSE(ncid), fnam)
510
511!--- FIRST RECORD: LAST ONE OF PREVIOUS YEAR (CURRENT YEAR IF UNAVAILABLE)
512  fnam_m=fnam(1:idx)//'_m.nc'
513  IF(NF90_OPEN(fnam_m,NF90_NOWRITE,ncid)==NF90_NOERR) THEN
514    CALL msg(0,'Reading previous year file ("'//TRIM(fnam_m)//'") last record for '//TRIM(title))
515    CALL ncerr(NF90_INQ_VARID(ncid, varname, varid),fnam_m)
516    CALL ncerr(NF90_INQUIRE_VARIABLE(ncid, varid, dimids=dids),fnam_m)
517    CALL ncerr(NF90_INQUIRE_DIMENSION(ncid, dids(3), len=l), fnam_m)
518    CALL ncerr(NF90_GET_VAR(ncid,varid,champ,[1,1,l],[imdep,jmdep,1]),fnam_m)
519    CALL ncerr(NF90_CLOSE(ncid), fnam_m)
520    CALL conf_dat2d(title, dlon_ini, dlat_ini, dlon, dlat, champ, .TRUE.)
521    IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
522    IF(mode=='RUG') champ=LOG(champ)
523    CALL inter_barxy(dlon,dlat(:jmdep-1),champ,rlonu(:iim),rlatv,champint)
524    IF(mode=='RUG') THEN
525      champint=EXP(champint)
526      WHERE(NINT(mask)/=1) champint=0.001
527    END IF
528    champtime(:, :, 1)=champint
529  ELSE
530    CALL msg(0,'Using current year file ("'//TRIM(fnam)//'") last record for '//TRIM(title))
531    champtime(:, :, 1)=champtime(:, :, lmdep+1)
532  END IF
533
534!--- LAST RECORD: FIRST ONE OF NEXT YEAR (CURRENT YEAR IF UNAVAILABLE)
535  fnam_p=fnam(1:idx)//'_p.nc'
536  IF(NF90_OPEN(fnam_p,NF90_NOWRITE,ncid)==NF90_NOERR) THEN
537    CALL msg(0,'Reading next year file ("'//TRIM(fnam_p)//'") first record for '//TRIM(title))
538    CALL ncerr(NF90_INQ_VARID(ncid, varname, varid),fnam_p)
539    CALL ncerr(NF90_GET_VAR(ncid,varid,champ,[1,1,1],[imdep,jmdep,1]),fnam_p)
540    CALL ncerr(NF90_CLOSE(ncid), fnam_p)
541    CALL conf_dat2d(title, dlon_ini, dlat_ini, dlon, dlat, champ, .TRUE.)
542    IF(extrp) CALL extrapol(champ,imdep,jmdep,999999.,.TRUE.,.TRUE.,2,work)
543    IF(mode=='RUG') champ=LOG(champ)
544    CALL inter_barxy(dlon,dlat(:jmdep-1),champ,rlonu(:iim),rlatv,champint)
545    IF(mode=='RUG') THEN
546      champint=EXP(champint)
547      WHERE(NINT(mask)/=1) champint=0.001
548    END IF
549    champtime(:, :, lmdep+2)=champint
550  ELSE
551    CALL msg(0,'Using current year file ("'//TRIM(fnam)//'") first record for '//TRIM(title))
552    champtime(:, :, lmdep+2)=champtime(:, :, 2)
553  END IF
554  DEALLOCATE(dlon_ini, dlat_ini, dlon, dlat, champ)
555  IF(extrp) DEALLOCATE(work)
556
557!--- TIME INTERPOLATION ------------------------------------------------------
558  IF(prt_level>0) THEN
559     IF(ndays/=ndays_in) THEN
560        WRITE(lunout,*)'DIFFERENT YEAR LENGTHS:'
561        WRITE(lunout,*)' In the  input file: ',ndays_in
562        WRITE(lunout,*)' In the output file: ',ndays
563     END IF
564     IF(lmdep==ndays_in) THEN
565        WRITE(lunout, *)'NO TIME INTERPOLATION.'
566        WRITE(lunout, *)' Daily input file.'
567     ELSE
568        IF(     is_bcs) WRITE(lunout, *)'LINEAR TIME INTERPOLATION.'
569        IF(.NOT.is_bcs) WRITE(lunout, *)'SPLINES TIME INTERPOLATION.'
570        WRITE(lunout, *)' Input time vector: ', timeyear
571        WRITE(lunout, *)' Output time vector: from 0.5 to ', ndays-0.5
572     END IF
573  END IF
574  ALLOCATE(champan(iip1, jjp1, ndays))
575
576  IF(lmdep==ndays_in) THEN  !--- DAILY DATA: NO     TIME INTERPOLATION
577    DO l=1,lmdep
578      champan(1:iim,:,l)=champtime(:,:,l+1)
579    END DO
580  ELSE IF(is_bcs) THEN      !--- BCS   DATA: LINEAR TIME INTERPOLATION
581    l=1
582    DO k=1, ndays
583      timeday = (REAL(k)-0.5)*REAL(ndays_in)/ndays
584      IF(timeyear(l+1)<timeday) l=l+1
585      al=(timeday-timeyear(l))/(timeyear(l+1)-timeyear(l))
586      champan(1:iim,:,k) = champtime(1:iim,:,l)+al*(champtime(1:iim,:,l+1)-champtime(1:iim,:,l))
587    END DO
588  ELSE                      !--- AVE   DATA: SPLINE TIME INTERPOLATION
589     skip = .false.
590     n_extrap = 0
591     ALLOCATE(yder(lmdep+2))
592     DO j=1, jjp1
593       DO i=1, iim
594         yder = pchsp_95(timeyear, champtime(i, j, :), ibeg=2, iend=2, &
595              vc_beg=0., vc_end=0.)
596         CALL pchfe_95(timeyear, champtime(i, j, :), yder, skip, &
597              arth(0.5, real(ndays_in) / ndays, ndays), champan(i, j, :), ierr)
598         if (ierr < 0) call abort_physic("get_2Dfield", "", 1)
599         n_extrap = n_extrap + ierr
600       END DO
601     END DO
602     IF(n_extrap /= 0) WRITE(lunout,*) "get_2Dfield pchfe_95: n_extrap = ", n_extrap
603     DEALLOCATE(yder)
604  END IF
605  champan(iip1, :, :)=champan(1, :, :)
606  DEALLOCATE(champtime, timeyear)
607
608!--- Checking the result
609  DO j=1, jjp1
610    CALL minmax(iip1, champan(1, j, 10), chmin, chmax)
611    IF (prt_level>5) WRITE(lunout, *)' ',TRIM(title),' at time 10 ', chmin, chmax, j
612  END DO
613
614!--- SPECIAL FILTER FOR SST: SST>271.38 --------------------------------------
615  IF(mode=='SST') THEN
616    SELECT CASE(units)
617      CASE("K"); CALL msg(0,'SST field is already in kelvins.')
618      CASE("C"); CALL msg(0,'SST field converted from celcius degrees to kelvins.')
619      champan(:, :, :)=champan(:, :, :)+273.15
620    END SELECT
621    CALL msg(0,'Filtering SST: Sea Surface Temperature >= 271.38')
622    WHERE(champan<271.38) champan=271.38
623  END IF
624
625!--- SPECIAL FILTER FOR SIC: 0.0<SIC<1.0 -------------------------------------
626  IF(mode=='SIC') THEN
627    SELECT CASE(units)
628      CASE("1"); CALL msg(0,'SIC field already in fraction of 1')
629      CASE("%"); CALL msg(0,'SIC field converted from percentage to fraction of 1.')
630       champan(:, :, :)=champan(:, :, :)/100.
631    END SELECT
632    CALL msg(0,'Filtering SIC: 0.0 <= Sea-ice <=1.0')
633    WHERE(champan>1.0) champan=1.0
634    WHERE(champan<0.0) champan=0.0
635 END IF
636
637!--- DYNAMICAL TO PHYSICAL GRID ----------------------------------------------
638  ALLOCATE(champo(klon, ndays))
639  DO k=1, ndays
640    CALL gr_dyn_fi(1, iip1, jjp1, klon, champan(1, 1, k), champo(:, k))
641  END DO
642  DEALLOCATE(champan)
643
644END SUBROUTINE get_2Dfield
645!
646!-------------------------------------------------------------------------------
647
648
649!-------------------------------------------------------------------------------
650!
651SUBROUTINE start_init_orog0(lon_in,lat_in,phis,masque)
652!
653!-------------------------------------------------------------------------------
654  USE grid_noro_m, ONLY: grid_noro0
655  IMPLICIT NONE
656!===============================================================================
657! Purpose:  Compute "phis" just like it would be in start_init_orog.
658!===============================================================================
659! Arguments:
660  REAL,             INTENT(IN)    :: lon_in(:), lat_in(:)   ! dim (iml) (jml)
661  REAL,             INTENT(INOUT) :: phis(:,:), masque(:,:) ! dim (iml,jml)
662!-------------------------------------------------------------------------------
663! Local variables:
664  CHARACTER(LEN=ns)  :: modname="start_init_orog0"
665  INTEGER            :: fid, llm_tmp,ttm_tmp, iml,jml, iml_rel,jml_rel, itau(1)
666  REAL               :: lev(1), date, dt, deg2rad
667  REAL, ALLOCATABLE  :: lon_rad(:), lon_ini(:), lon_rel(:,:), relief_hi(:,:)
668  REAL, ALLOCATABLE  :: lat_rad(:), lat_ini(:), lat_rel(:,:)
669!-------------------------------------------------------------------------------
670  iml=assert_eq(SIZE(lon_in),SIZE(phis,1),SIZE(masque,1),TRIM(modname)//" iml")
671  jml=assert_eq(SIZE(lat_in),SIZE(phis,2),SIZE(masque,2),TRIM(modname)//" jml")
672  IF(iml/=iip1) CALL abort_gcm(TRIM(modname),'iml/=iip1',1)
673  IF(jml/=jjp1) CALL abort_gcm(TRIM(modname),'jml/=jjp1',1)
674  pi=2.0*ASIN(1.0); deg2rad=pi/180.0
675  IF(ANY(phis/=-99999.)) RETURN                  !--- phis ALREADY KNOWN
676
677!--- HIGH RESOLUTION OROGRAPHY
678  CALL flininfo(frelf, iml_rel, jml_rel, llm_tmp, ttm_tmp, fid)
679
680  ALLOCATE(lat_rel(iml_rel,jml_rel),lon_rel(iml_rel,jml_rel))
681  CALL flinopen(frelf, .FALSE., iml_rel, jml_rel, llm_tmp, lon_rel, lat_rel,   &
682                lev, ttm_tmp, itau, date, dt, fid)
683  ALLOCATE(relief_hi(iml_rel,jml_rel))
684  CALL flinget(fid, vrel, iml_rel, jml_rel, llm_tmp, ttm_tmp, 1, 1, relief_hi)
685  CALL flinclo(fid)
686
687!--- IF ANGLES ARE IN DEGREES, THEY ARE CONVERTED INTO RADIANS
688  ALLOCATE(lon_ini(iml_rel),lat_ini(jml_rel))
689  lon_ini(:)=lon_rel(:,1); IF(MAXVAL(lon_rel)>pi) lon_ini=lon_ini*deg2rad
690  lat_ini(:)=lat_rel(1,:); IF(MAXVAL(lat_rel)>pi) lat_ini=lat_ini*deg2rad
691
692!--- FIELDS ARE PROCESSED TO BE ON STANDARD ANGULAR DOMAINS
693  ALLOCATE(lon_rad(iml_rel),lat_rad(jml_rel))
694  CALL conf_dat2d(vrel, lon_ini, lat_ini, lon_rad, lat_rad, relief_hi, .FALSE.)
695  DEALLOCATE(lon_ini,lat_ini)
696
697!--- COMPUTING SURFACE GEOPOTENTIAL USING ROUTINE grid_noro0
698  WRITE(lunout,*)
699  WRITE(lunout,*)'*** Compute surface geopotential ***'
700
701!--- CALL OROGRAPHY MODULE (REDUCED VERSION) TO COMPUTE FIELDS
702  CALL grid_noro0(lon_rad, lat_rad, relief_hi, lon_in, lat_in, phis, masque)
703  phis = phis * 9.81
704  phis(iml,:) = phis(1,:)
705  DEALLOCATE(relief_hi,lon_rad,lat_rad)
706
707END SUBROUTINE start_init_orog0
708!
709!-------------------------------------------------------------------------------
710
711
712!-------------------------------------------------------------------------------
713!
714SUBROUTINE msg(lev,str1,i,str2)
715!
716!-------------------------------------------------------------------------------
717! Arguments:
718  INTEGER,                    INTENT(IN) :: lev
719  CHARACTER(LEN=*),           INTENT(IN) :: str1
720  INTEGER,          OPTIONAL, INTENT(IN) :: i
721  CHARACTER(LEN=*), OPTIONAL, INTENT(IN) :: str2
722!-------------------------------------------------------------------------------
723  IF(prt_level>=lev) THEN
724    IF(PRESENT(str2)) THEN
725      WRITE(lunout,*) TRIM(str1), i, TRIM(str2)
726    ELSE IF(PRESENT(i)) THEN
727      WRITE(lunout,*) TRIM(str1), i
728    ELSE
729      WRITE(lunout,*) TRIM(str1)
730    END IF
731  END IF
732
733END SUBROUTINE msg
734!
735!-------------------------------------------------------------------------------
736
737
738!-------------------------------------------------------------------------------
739!
740SUBROUTINE ncerr(ncres,fnam)
741!
742!-------------------------------------------------------------------------------
743! Purpose: NetCDF errors handling.
744!-------------------------------------------------------------------------------
745  USE netcdf, ONLY : NF90_NOERR, NF90_STRERROR
746  IMPLICIT NONE
747!-------------------------------------------------------------------------------
748! Arguments:
749  INTEGER,          INTENT(IN) :: ncres
750  CHARACTER(LEN=*), INTENT(IN) :: fnam
751!-------------------------------------------------------------------------------
752  IF(ncres/=NF90_NOERR) THEN
753    WRITE(lunout,*)'Problem with file '//TRIM(fnam)//' in routine limit_netcdf.'
754    CALL abort_physic('limit_netcdf',NF90_STRERROR(ncres),1)
755  END IF
756
757END SUBROUTINE ncerr
758!
759!-------------------------------------------------------------------------------
760
761
762!-------------------------------------------------------------------------------
763!
764SUBROUTINE strclean(s)
765!
766!-------------------------------------------------------------------------------
767  IMPLICIT NONE
768!-------------------------------------------------------------------------------
769! Purpose: Remove tail null characters from the input string.
770!-------------------------------------------------------------------------------
771! Parameters:
772  CHARACTER(LEN=*), INTENT(INOUT) :: s
773!-------------------------------------------------------------------------------
774! Local variable:
775  INTEGER :: k
776!-------------------------------------------------------------------------------
777  k=LEN_TRIM(s); DO WHILE(ICHAR(s(k:k))==0); s(k:k)=' '; k=LEN_TRIM(s); END DO
778
779END SUBROUTINE strclean
780!
781!-------------------------------------------------------------------------------
782
783
784!-------------------------------------------------------------------------------
785!
786FUNCTION is_in(s1,s2) RESULT(res)
787!
788!-------------------------------------------------------------------------------
789  IMPLICIT NONE
790!-------------------------------------------------------------------------------
791! Purpose: Check wether s1 is present in the s2(:) list (case insensitive).
792!-------------------------------------------------------------------------------
793! Arguments:
794  CHARACTER(LEN=*), INTENT(IN) :: s1, s2(:)
795  LOGICAL                      :: res
796!-------------------------------------------------------------------------------
797  res=.FALSE.; DO k=1,SIZE(s2); res=res.OR.strLow(s1)==strLow(s2(k)); END DO
798
799END FUNCTION is_in
800!
801!-------------------------------------------------------------------------------
802
803
804!-------------------------------------------------------------------------------
805!
806ELEMENTAL FUNCTION strLow(s) RESULT(res)
807!
808!-------------------------------------------------------------------------------
809  IMPLICIT NONE
810!-------------------------------------------------------------------------------
811! Purpose: Lower case conversion.
812!-------------------------------------------------------------------------------
813! Arguments:
814  CHARACTER(LEN=*), INTENT(IN) :: s
815  CHARACTER(LEN=ns)            :: res
816!-------------------------------------------------------------------------------
817! Local variable:
818  INTEGER :: k, ix
819!-------------------------------------------------------------------------------
820  res=s
821  DO k=1,LEN(s); ix=IACHAR(s(k:k))
822    IF(64<ix.AND.ix<91) res(k:k)=ACHAR(ix+32)
823  END DO
824
825END FUNCTION strLow
826!
827!-------------------------------------------------------------------------------
828
829#endif
830! of #ifndef CPP_1D
831END SUBROUTINE limit_netcdf
832
833END MODULE limit
834!
835!*******************************************************************************
836
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