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bdyini.F90 in NEMO/branches/2019/dev_r10984_HPC-13_IRRMANN_BDY_optimization/src/OCE/BDY – NEMO

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source: NEMO/branches/2019/dev_r10984_HPC-13_IRRMANN_BDY_optimization/src/OCE/BDY/bdyini.F90 @ 11024

Last change on this file since 11024 was 11024, checked in by girrmann, 5 years ago
dev_r10984_HPC-13 : imrpove bdy treatment ssh and neumann, see #2285
Property svn:keywords set to `Id`
File size: 81.2 KB

Line
1	MODULE bdyini
2	!!======================================================================
3	!! * MODULE bdyini *
4	!! Unstructured open boundaries : initialisation
5	!!======================================================================
6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
8	!! - ! 2007-01 (D. Storkey) Tidal forcing
9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
10	!! 3.3 ! 2010-09 (E.O'Dea) updates for Shelf configurations
11	!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
12	!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
13	!! 3.4 ! 2012 (J. Chanut) straight open boundary case update
14	!! 3.5 ! 2012 (S. Mocavero, I. Epicoco) optimization of BDY communications
15	!! 3.7 ! 2016 (T. Lovato) Remove bdy macro, call here init for dta and tides
16	!!----------------------------------------------------------------------
17	!! bdy_init : Initialization of unstructured open boundaries
18	!!----------------------------------------------------------------------
19	USE oce ! ocean dynamics and tracers variables
20	USE dom_oce ! ocean space and time domain
21	USE bdy_oce ! unstructured open boundary conditions
22	USE bdydta ! open boundary cond. setting (bdy_dta_init routine)
23	USE bdytides ! open boundary cond. setting (bdytide_init routine)
24	USE sbctide ! Tidal forcing or not
25	USE phycst , ONLY: rday
26	!
27	USE in_out_manager ! I/O units
28	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
29	USE lib_mpp ! for mpp_sum
30	USE iom ! I/O
31
32	IMPLICIT NONE
33	PRIVATE
34
35	PUBLIC bdy_init ! routine called in nemo_init
36
37	INTEGER, PARAMETER :: jp_nseg = 100 !
38	INTEGER, PARAMETER :: nrimmax = 20 ! maximum rimwidth in structured
39	! open boundary data files
40	! Straight open boundary segment parameters:
41	INTEGER :: nbdysege, nbdysegw, nbdysegn, nbdysegs
42	INTEGER, DIMENSION(jp_nseg) :: jpieob, jpjedt, jpjeft, npckge !
43	INTEGER, DIMENSION(jp_nseg) :: jpiwob, jpjwdt, jpjwft, npckgw !
44	INTEGER, DIMENSION(jp_nseg) :: jpjnob, jpindt, jpinft, npckgn !
45	INTEGER, DIMENSION(jp_nseg) :: jpjsob, jpisdt, jpisft, npckgs !
46	!!----------------------------------------------------------------------
47	!! NEMO/OCE 4.0 , NEMO Consortium (2018)
48	!! $Id$
49	!! Software governed by the CeCILL license (see ./LICENSE)
50	!!----------------------------------------------------------------------
51	CONTAINS
52
53	SUBROUTINE bdy_init
54	!!----------------------------------------------------------------------
55	!! * ROUTINE bdy_init *
56	!!
57	!! ** Purpose : Initialization of the dynamics and tracer fields with
58	!! unstructured open boundaries.
59	!!
60	!! ** Method : Read initialization arrays (mask, indices) to identify
61	!! an unstructured open boundary
62	!!
63	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
64	!!----------------------------------------------------------------------
65	NAMELIST/nambdy/ ln_bdy, nb_bdy, ln_coords_file, cn_coords_file, &
66	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
67	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
68	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
69	& cn_ice, nn_ice_dta, &
70	& rn_ice_tem, rn_ice_sal, rn_ice_age, &
71	& ln_vol, nn_volctl, nn_rimwidth, nb_jpk_bdy
72	!
73	INTEGER :: ios ! Local integer output status for namelist read
74	!!----------------------------------------------------------------------
75
76	! ------------------------
77	! Read namelist parameters
78	! ------------------------
79	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
80	READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 901)
81	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp )
82	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
83	READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 902 )
84	902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp )
85	IF(lwm) WRITE ( numond, nambdy )
86
87	IF( .NOT. Agrif_Root() ) ln_bdy = .FALSE. ! forced for Agrif children
88
89	! -----------------------------------------
90	! unstructured open boundaries use control
91	! -----------------------------------------
92	IF ( ln_bdy ) THEN
93	IF(lwp) WRITE(numout,*)
94	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
95	IF(lwp) WRITE(numout,*) '~~~~~~~~'
96	!
97	! Open boundaries definition (arrays and masks)
98	CALL bdy_segs
99	!
100	! Open boundaries initialisation of external data arrays
101	CALL bdy_dta_init
102	!
103	! Open boundaries initialisation of tidal harmonic forcing
104	IF( ln_tide ) CALL bdytide_init
105	!
106	ELSE
107	IF(lwp) WRITE(numout,*)
108	IF(lwp) WRITE(numout,*) 'bdy_init : open boundaries not used (ln_bdy = F)'
109	IF(lwp) WRITE(numout,*) '~~~~~~~~'
110	!
111	ENDIF
112	!
113	END SUBROUTINE bdy_init
114
115
116	SUBROUTINE bdy_segs
117	!!----------------------------------------------------------------------
118	!! * ROUTINE bdy_init *
119	!!
120	!! ** Purpose : Definition of unstructured open boundaries.
121	!!
122	!! ** Method : Read initialization arrays (mask, indices) to identify
123	!! an unstructured open boundary
124	!!
125	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
126	!!----------------------------------------------------------------------
127	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
128	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
129	INTEGER :: iwe, ies, iso, ino, inum, id_dummy ! - -
130	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
131	INTEGER :: jpbdtau, jpbdtas ! - -
132	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
133	INTEGER :: i_offset, j_offset, inbdy ! - -
134	INTEGER , POINTER :: nbi, nbj, nbr ! short cuts
135	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
136	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
137	INTEGER, DIMENSION (2) :: kdimsz
138	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
139	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
140	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
141	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
142	INTEGER :: com_east, com_west, com_south, com_north, jpk_max ! Flags for boundaries sending
143	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
144	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
145	REAL(wp), TARGET, DIMENSION(jpi,jpj) :: zfmask ! temporary fmask array excluding coastal boundary condition (shlat)
146	LOGICAL :: llnobdy, llsobdy, lleabdy, llwebdy ! local logicals
147	!!
148	CHARACTER(LEN=1) :: ctypebdy ! - -
149	INTEGER :: nbdyind, nbdybeg, nbdyend
150	!!
151	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
152	INTEGER :: ios ! Local integer output status for namelist read
153	!!----------------------------------------------------------------------
154	!
155	cgrid = (/'t','u','v'/)
156
157	! -----------------------------------------
158	! Check and write out namelist parameters
159	! -----------------------------------------
160	IF( jperio /= 0 ) CALL ctl_stop( 'bdy_segs: Cyclic or symmetric,', &
161	& ' and general open boundary condition are not compatible' )
162
163	IF( nb_bdy == 0 ) THEN
164	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
165	ELSE
166	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ', nb_bdy
167	ENDIF
168
169	DO ib_bdy = 1,nb_bdy
170	IF(lwp) WRITE(numout,*) ' '
171	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
172
173	IF( ln_coords_file(ib_bdy) ) THEN
174	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
175	ELSE
176	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
177	ENDIF
178	IF(lwp) WRITE(numout,*)
179
180	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
181	SELECT CASE( cn_dyn2d(ib_bdy) )
182	CASE( 'none' )
183	IF(lwp) WRITE(numout,*) ' no open boundary condition'
184	dta_bdy(ib_bdy)%ll_ssh = .false.
185	dta_bdy(ib_bdy)%ll_u2d = .false.
186	dta_bdy(ib_bdy)%ll_v2d = .false.
187	CASE( 'frs' )
188	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
189	dta_bdy(ib_bdy)%ll_ssh = .false.
190	dta_bdy(ib_bdy)%ll_u2d = .true.
191	dta_bdy(ib_bdy)%ll_v2d = .true.
192	CASE( 'flather' )
193	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
194	dta_bdy(ib_bdy)%ll_ssh = .true.
195	dta_bdy(ib_bdy)%ll_u2d = .true.
196	dta_bdy(ib_bdy)%ll_v2d = .true.
197	CASE( 'orlanski' )
198	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
199	dta_bdy(ib_bdy)%ll_ssh = .false.
200	dta_bdy(ib_bdy)%ll_u2d = .true.
201	dta_bdy(ib_bdy)%ll_v2d = .true.
202	CASE( 'orlanski_npo' )
203	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
204	dta_bdy(ib_bdy)%ll_ssh = .false.
205	dta_bdy(ib_bdy)%ll_u2d = .true.
206	dta_bdy(ib_bdy)%ll_v2d = .true.
207	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
208	END SELECT
209	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
210	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
211	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
212	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
213	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
214	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
215	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
216	END SELECT
217	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.ln_tide)) THEN
218	CALL ctl_stop( 'You must activate with ln_tide to add tidal forcing at open boundaries' )
219	ENDIF
220	ENDIF
221	IF(lwp) WRITE(numout,*)
222
223	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
224	SELECT CASE( cn_dyn3d(ib_bdy) )
225	CASE('none')
226	IF(lwp) WRITE(numout,*) ' no open boundary condition'
227	dta_bdy(ib_bdy)%ll_u3d = .false.
228	dta_bdy(ib_bdy)%ll_v3d = .false.
229	CASE('frs')
230	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
231	dta_bdy(ib_bdy)%ll_u3d = .true.
232	dta_bdy(ib_bdy)%ll_v3d = .true.
233	CASE('specified')
234	IF(lwp) WRITE(numout,*) ' Specified value'
235	dta_bdy(ib_bdy)%ll_u3d = .true.
236	dta_bdy(ib_bdy)%ll_v3d = .true.
237	CASE('neumann')
238	IF(lwp) WRITE(numout,*) ' Neumann conditions'
239	dta_bdy(ib_bdy)%ll_u3d = .false.
240	dta_bdy(ib_bdy)%ll_v3d = .false.
241	CASE('zerograd')
242	IF(lwp) WRITE(numout,*) ' Zero gradient for baroclinic velocities'
243	dta_bdy(ib_bdy)%ll_u3d = .false.
244	dta_bdy(ib_bdy)%ll_v3d = .false.
245	CASE('zero')
246	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
247	dta_bdy(ib_bdy)%ll_u3d = .false.
248	dta_bdy(ib_bdy)%ll_v3d = .false.
249	CASE('orlanski')
250	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
251	dta_bdy(ib_bdy)%ll_u3d = .true.
252	dta_bdy(ib_bdy)%ll_v3d = .true.
253	CASE('orlanski_npo')
254	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
255	dta_bdy(ib_bdy)%ll_u3d = .true.
256	dta_bdy(ib_bdy)%ll_v3d = .true.
257	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
258	END SELECT
259	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
260	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
261	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
262	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
263	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
264	END SELECT
265	ENDIF
266
267	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
268	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
269	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
270	ln_dyn3d_dmp(ib_bdy)=.false.
271	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
272	CALL ctl_stop( 'Use FRS OR relaxation' )
273	ELSE
274	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
275	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
276	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
277	dta_bdy(ib_bdy)%ll_u3d = .true.
278	dta_bdy(ib_bdy)%ll_v3d = .true.
279	ENDIF
280	ELSE
281	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
282	ENDIF
283	IF(lwp) WRITE(numout,*)
284
285	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
286	SELECT CASE( cn_tra(ib_bdy) )
287	CASE('none')
288	IF(lwp) WRITE(numout,*) ' no open boundary condition'
289	dta_bdy(ib_bdy)%ll_tem = .false.
290	dta_bdy(ib_bdy)%ll_sal = .false.
291	CASE('frs')
292	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
293	dta_bdy(ib_bdy)%ll_tem = .true.
294	dta_bdy(ib_bdy)%ll_sal = .true.
295	CASE('specified')
296	IF(lwp) WRITE(numout,*) ' Specified value'
297	dta_bdy(ib_bdy)%ll_tem = .true.
298	dta_bdy(ib_bdy)%ll_sal = .true.
299	CASE('neumann')
300	IF(lwp) WRITE(numout,*) ' Neumann conditions'
301	dta_bdy(ib_bdy)%ll_tem = .false.
302	dta_bdy(ib_bdy)%ll_sal = .false.
303	CASE('runoff')
304	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
305	dta_bdy(ib_bdy)%ll_tem = .false.
306	dta_bdy(ib_bdy)%ll_sal = .false.
307	CASE('orlanski')
308	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
309	dta_bdy(ib_bdy)%ll_tem = .true.
310	dta_bdy(ib_bdy)%ll_sal = .true.
311	CASE('orlanski_npo')
312	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
313	dta_bdy(ib_bdy)%ll_tem = .true.
314	dta_bdy(ib_bdy)%ll_sal = .true.
315	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
316	END SELECT
317	IF( cn_tra(ib_bdy) /= 'none' ) THEN
318	SELECT CASE( nn_tra_dta(ib_bdy) ) !
319	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
320	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
321	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
322	END SELECT
323	ENDIF
324
325	IF ( ln_tra_dmp(ib_bdy) ) THEN
326	IF ( cn_tra(ib_bdy) == 'none' ) THEN
327	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
328	ln_tra_dmp(ib_bdy)=.false.
329	ELSEIF ( cn_tra(ib_bdy) == 'frs' ) THEN
330	CALL ctl_stop( 'Use FRS OR relaxation' )
331	ELSE
332	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
333	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
334	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
335	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
336	dta_bdy(ib_bdy)%ll_tem = .true.
337	dta_bdy(ib_bdy)%ll_sal = .true.
338	ENDIF
339	ELSE
340	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
341	ENDIF
342	IF(lwp) WRITE(numout,*)
343
344	#if defined key_si3
345	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
346	SELECT CASE( cn_ice(ib_bdy) )
347	CASE('none')
348	IF(lwp) WRITE(numout,*) ' no open boundary condition'
349	dta_bdy(ib_bdy)%ll_a_i = .false.
350	dta_bdy(ib_bdy)%ll_h_i = .false.
351	dta_bdy(ib_bdy)%ll_h_s = .false.
352	CASE('frs')
353	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
354	dta_bdy(ib_bdy)%ll_a_i = .true.
355	dta_bdy(ib_bdy)%ll_h_i = .true.
356	dta_bdy(ib_bdy)%ll_h_s = .true.
357	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice' )
358	END SELECT
359	IF( cn_ice(ib_bdy) /= 'none' ) THEN
360	SELECT CASE( nn_ice_dta(ib_bdy) ) !
361	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
362	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
363	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_dta must be 0 or 1' )
364	END SELECT
365	ENDIF
366	IF(lwp) WRITE(numout,*)
367	IF(lwp) WRITE(numout,*) ' tem of bdy sea-ice = ', rn_ice_tem(ib_bdy)
368	IF(lwp) WRITE(numout,*) ' sal of bdy sea-ice = ', rn_ice_sal(ib_bdy)
369	IF(lwp) WRITE(numout,*) ' age of bdy sea-ice = ', rn_ice_age(ib_bdy)
370	#endif
371
372	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
373	IF(lwp) WRITE(numout,*)
374	!
375	END DO
376
377	IF( nb_bdy > 0 ) THEN
378	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
379	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
380	IF(lwp) WRITE(numout,*)
381	SELECT CASE ( nn_volctl )
382	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
383	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
384	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
385	END SELECT
386	IF(lwp) WRITE(numout,*)
387	!
388	! sanity check if used with tides
389	IF( ln_tide ) THEN
390	IF(lwp) WRITE(numout,*) ' The total volume correction is not working with tides. '
391	IF(lwp) WRITE(numout,*) ' Set ln_vol to .FALSE. '
392	IF(lwp) WRITE(numout,*) ' or '
393	IF(lwp) WRITE(numout,*) ' equilibriate your bdy input files '
394	CALL ctl_stop( 'The total volume correction is not working with tides.' )
395	END IF
396	ELSE
397	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
398	IF(lwp) WRITE(numout,*)
399	ENDIF
400	IF( nb_jpk_bdy(ib_bdy) > 0 ) THEN
401	IF(lwp) WRITE(numout,) ' open boundary will be interpolate in the vertical onto the native grid *'
402	ELSE
403	IF(lwp) WRITE(numout,) ' open boundary will be read straight onto the native grid without vertical interpolation *'
404	ENDIF
405	ENDIF
406
407	! -------------------------------------------------
408	! Initialise indices arrays for open boundaries
409	! -------------------------------------------------
410
411	! Work out global dimensions of boundary data
412	! ---------------------------------------------
413	REWIND( numnam_cfg )
414
415	nblendta(:,:) = 0
416	nbdysege = 0
417	nbdysegw = 0
418	nbdysegn = 0
419	nbdysegs = 0
420	icount = 0 ! count user defined segments
421	! Dimensions below are used to allocate arrays to read external data
422	jpbdtas = 1 ! Maximum size of boundary data (structured case)
423	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
424
425	DO ib_bdy = 1, nb_bdy
426
427	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
428
429	icount = icount + 1
430	! No REWIND here because may need to read more than one nambdy_index namelist.
431	! Read only namelist_cfg to avoid unseccessfull overwrite
432	! keep full control of the configuration namelist
433	READ ( numnam_cfg, nambdy_index, IOSTAT = ios, ERR = 904 )
434	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in configuration namelist', lwp )
435	IF(lwm) WRITE ( numond, nambdy_index )
436
437	SELECT CASE ( TRIM(ctypebdy) )
438	CASE( 'N' )
439	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
440	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
441	nbdybeg = 2
442	nbdyend = jpiglo - 1
443	ENDIF
444	nbdysegn = nbdysegn + 1
445	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
446	jpjnob(nbdysegn) = nbdyind
447	jpindt(nbdysegn) = nbdybeg
448	jpinft(nbdysegn) = nbdyend
449	!
450	CASE( 'S' )
451	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
452	nbdyind = 2 ! set boundary to whole side of model domain.
453	nbdybeg = 2
454	nbdyend = jpiglo - 1
455	ENDIF
456	nbdysegs = nbdysegs + 1
457	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
458	jpjsob(nbdysegs) = nbdyind
459	jpisdt(nbdysegs) = nbdybeg
460	jpisft(nbdysegs) = nbdyend
461	!
462	CASE( 'E' )
463	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
464	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
465	nbdybeg = 2
466	nbdyend = jpjglo - 1
467	ENDIF
468	nbdysege = nbdysege + 1
469	npckge(nbdysege) = ib_bdy ! Save bdy package number
470	jpieob(nbdysege) = nbdyind
471	jpjedt(nbdysege) = nbdybeg
472	jpjeft(nbdysege) = nbdyend
473	!
474	CASE( 'W' )
475	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
476	nbdyind = 2 ! set boundary to whole side of model domain.
477	nbdybeg = 2
478	nbdyend = jpjglo - 1
479	ENDIF
480	nbdysegw = nbdysegw + 1
481	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
482	jpiwob(nbdysegw) = nbdyind
483	jpjwdt(nbdysegw) = nbdybeg
484	jpjwft(nbdysegw) = nbdyend
485	!
486	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
487	END SELECT
488
489	! For simplicity we assume that in case of straight bdy, arrays have the same length
490	! (even if it is true that last tangential velocity points
491	! are useless). This simplifies a little bit boundary data format (and agrees with format
492	! used so far in obc package)
493
494	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
495	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
496	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
497	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
498
499	ELSE ! Read size of arrays in boundary coordinates file.
500	CALL iom_open( cn_coords_file(ib_bdy), inum )
501	DO igrd = 1, jpbgrd
502	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
503	nblendta(igrd,ib_bdy) = MAXVAL(kdimsz)
504	jpbdtau = MAX(jpbdtau, MAXVAL(kdimsz))
505	END DO
506	CALL iom_close( inum )
507	!
508	ENDIF
509	!
510	END DO ! ib_bdy
511
512	IF (nb_bdy>0) THEN
513	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
514
515	! Allocate arrays
516	!---------------
517	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
518	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
519
520	jpk_max = MAXVAL(nb_jpk_bdy)
521	jpk_max = MAX(jpk_max, jpk)
522
523	ALLOCATE( dta_global(jpbdtau, 1, jpk_max) )
524	ALLOCATE( dta_global_z(jpbdtau, 1, jpk_max) ) ! needed ?? TODO
525	ALLOCATE( dta_global_dz(jpbdtau, 1, jpk_max) )! needed ?? TODO
526
527	IF ( icount>0 ) THEN
528	ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk_max) )
529	ALLOCATE( dta_global2_z(jpbdtas, nrimmax, jpk_max) ) ! needed ?? TODO
530	ALLOCATE( dta_global2_dz(jpbdtas, nrimmax, jpk_max) )! needed ?? TODO
531	ENDIF
532	!
533	ENDIF
534
535	! Now look for crossings in user (namelist) defined open boundary segments:
536	!--------------------------------------------------------------------------
537	IF( icount>0 ) CALL bdy_ctl_seg
538
539	! Calculate global boundary index arrays or read in from file
540	!------------------------------------------------------------
541	! 1. Read global index arrays from boundary coordinates file.
542	DO ib_bdy = 1, nb_bdy
543	!
544	IF( ln_coords_file(ib_bdy) ) THEN
545	!
546	CALL iom_open( cn_coords_file(ib_bdy), inum )
547	DO igrd = 1, jpbgrd
548	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
549	DO ii = 1,nblendta(igrd,ib_bdy)
550	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
551	END DO
552	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
553	DO ii = 1,nblendta(igrd,ib_bdy)
554	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
555	END DO
556	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
557	DO ii = 1,nblendta(igrd,ib_bdy)
558	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
559	END DO
560	!
561	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
562	IF(lwp) WRITE(numout,*)
563	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
564	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
565	IF (ibr_max < nn_rimwidth(ib_bdy)) &
566	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
567	END DO
568	CALL iom_close( inum )
569	!
570	ENDIF
571	!
572	END DO
573
574	! 2. Now fill indices corresponding to straight open boundary arrays:
575	! East
576	!-----
577	DO iseg = 1, nbdysege
578	ib_bdy = npckge(iseg)
579	!
580	! ------------ T points -------------
581	igrd=1
582	icount=0
583	DO ir = 1, nn_rimwidth(ib_bdy)
584	DO ij = jpjedt(iseg), jpjeft(iseg)
585	icount = icount + 1
586	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
587	nbjdta(icount, igrd, ib_bdy) = ij
588	nbrdta(icount, igrd, ib_bdy) = ir
589	ENDDO
590	ENDDO
591	!
592	! ------------ U points -------------
593	igrd=2
594	icount=0
595	DO ir = 1, nn_rimwidth(ib_bdy)
596	DO ij = jpjedt(iseg), jpjeft(iseg)
597	icount = icount + 1
598	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
599	nbjdta(icount, igrd, ib_bdy) = ij
600	nbrdta(icount, igrd, ib_bdy) = ir
601	ENDDO
602	ENDDO
603	!
604	! ------------ V points -------------
605	igrd=3
606	icount=0
607	DO ir = 1, nn_rimwidth(ib_bdy)
608	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
609	DO ij = jpjedt(iseg), jpjeft(iseg)
610	icount = icount + 1
611	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
612	nbjdta(icount, igrd, ib_bdy) = ij
613	nbrdta(icount, igrd, ib_bdy) = ir
614	ENDDO
615	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
616	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
617	ENDDO
618	ENDDO
619	!
620	! West
621	!-----
622	DO iseg = 1, nbdysegw
623	ib_bdy = npckgw(iseg)
624	!
625	! ------------ T points -------------
626	igrd=1
627	icount=0
628	DO ir = 1, nn_rimwidth(ib_bdy)
629	DO ij = jpjwdt(iseg), jpjwft(iseg)
630	icount = icount + 1
631	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
632	nbjdta(icount, igrd, ib_bdy) = ij
633	nbrdta(icount, igrd, ib_bdy) = ir
634	ENDDO
635	ENDDO
636	!
637	! ------------ U points -------------
638	igrd=2
639	icount=0
640	DO ir = 1, nn_rimwidth(ib_bdy)
641	DO ij = jpjwdt(iseg), jpjwft(iseg)
642	icount = icount + 1
643	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
644	nbjdta(icount, igrd, ib_bdy) = ij
645	nbrdta(icount, igrd, ib_bdy) = ir
646	ENDDO
647	ENDDO
648	!
649	! ------------ V points -------------
650	igrd=3
651	icount=0
652	DO ir = 1, nn_rimwidth(ib_bdy)
653	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
654	DO ij = jpjwdt(iseg), jpjwft(iseg)
655	icount = icount + 1
656	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
657	nbjdta(icount, igrd, ib_bdy) = ij
658	nbrdta(icount, igrd, ib_bdy) = ir
659	ENDDO
660	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
661	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
662	ENDDO
663	ENDDO
664	!
665	! North
666	!-----
667	DO iseg = 1, nbdysegn
668	ib_bdy = npckgn(iseg)
669	!
670	! ------------ T points -------------
671	igrd=1
672	icount=0
673	DO ir = 1, nn_rimwidth(ib_bdy)
674	DO ii = jpindt(iseg), jpinft(iseg)
675	icount = icount + 1
676	nbidta(icount, igrd, ib_bdy) = ii
677	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
678	nbrdta(icount, igrd, ib_bdy) = ir
679	ENDDO
680	ENDDO
681	!
682	! ------------ U points -------------
683	igrd=2
684	icount=0
685	DO ir = 1, nn_rimwidth(ib_bdy)
686	! DO ii = jpindt(iseg), jpinft(iseg) - 1
687	DO ii = jpindt(iseg), jpinft(iseg)
688	icount = icount + 1
689	nbidta(icount, igrd, ib_bdy) = ii
690	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
691	nbrdta(icount, igrd, ib_bdy) = ir
692	ENDDO
693	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
694	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
695	ENDDO
696	!
697	! ------------ V points -------------
698	igrd=3
699	icount=0
700	DO ir = 1, nn_rimwidth(ib_bdy)
701	DO ii = jpindt(iseg), jpinft(iseg)
702	icount = icount + 1
703	nbidta(icount, igrd, ib_bdy) = ii
704	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
705	nbrdta(icount, igrd, ib_bdy) = ir
706	ENDDO
707	ENDDO
708	ENDDO
709	!
710	! South
711	!-----
712	DO iseg = 1, nbdysegs
713	ib_bdy = npckgs(iseg)
714	!
715	! ------------ T points -------------
716	igrd=1
717	icount=0
718	DO ir = 1, nn_rimwidth(ib_bdy)
719	DO ii = jpisdt(iseg), jpisft(iseg)
720	icount = icount + 1
721	nbidta(icount, igrd, ib_bdy) = ii
722	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
723	nbrdta(icount, igrd, ib_bdy) = ir
724	ENDDO
725	ENDDO
726	!
727	! ------------ U points -------------
728	igrd=2
729	icount=0
730	DO ir = 1, nn_rimwidth(ib_bdy)
731	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
732	DO ii = jpisdt(iseg), jpisft(iseg)
733	icount = icount + 1
734	nbidta(icount, igrd, ib_bdy) = ii
735	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
736	nbrdta(icount, igrd, ib_bdy) = ir
737	ENDDO
738	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
739	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
740	ENDDO
741	!
742	! ------------ V points -------------
743	igrd=3
744	icount=0
745	DO ir = 1, nn_rimwidth(ib_bdy)
746	DO ii = jpisdt(iseg), jpisft(iseg)
747	icount = icount + 1
748	nbidta(icount, igrd, ib_bdy) = ii
749	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
750	nbrdta(icount, igrd, ib_bdy) = ir
751	ENDDO
752	ENDDO
753	ENDDO
754
755	! Deal with duplicated points
756	!-----------------------------
757	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
758	! if their distance to the bdy is greater than the other
759	! If their distance are the same, just keep only one to avoid updating a point twice
760	DO igrd = 1, jpbgrd
761	DO ib_bdy1 = 1, nb_bdy
762	DO ib_bdy2 = 1, nb_bdy
763	IF (ib_bdy1/=ib_bdy2) THEN
764	DO ib1 = 1, nblendta(igrd,ib_bdy1)
765	DO ib2 = 1, nblendta(igrd,ib_bdy2)
766	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
767	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
768	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
769	! & nbidta(ib1, igrd, ib_bdy1), &
770	! & nbjdta(ib2, igrd, ib_bdy2)
771	! keep only points with the lowest distance to boundary:
772	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
773	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
774	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
775	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
776	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
777	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
778	! Arbitrary choice if distances are the same:
779	ELSE
780	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
781	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
782	ENDIF
783	END IF
784	END DO
785	END DO
786	ENDIF
787	END DO
788	END DO
789	END DO
790
791	! Work out dimensions of boundary data on each processor
792	! ------------------------------------------------------
793
794	! Rather assume that boundary data indices are given on global domain
795	! TO BE DISCUSSED ?
796	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
797	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
798	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
799	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
800	iwe = mig(1) - 1 + 2 ! if monotasking and no zoom, iw=2
801	ies = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
802	iso = mjg(1) - 1 + 2 ! if monotasking and no zoom, is=2
803	ino = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
804
805	ALLOCATE( nbondi_bdy(nb_bdy))
806	ALLOCATE( nbondj_bdy(nb_bdy))
807	nbondi_bdy(:)=2
808	nbondj_bdy(:)=2
809	ALLOCATE( nbondi_bdy_b(nb_bdy))
810	ALLOCATE( nbondj_bdy_b(nb_bdy))
811	nbondi_bdy_b(:)=2
812	nbondj_bdy_b(:)=2
813
814	! Work out dimensions of boundary data on each neighbour process
815	IF(nbondi == 0) THEN
816	iw_b(1) = 1 + nimppt(nowe+1)
817	ie_b(1) = 1 + nimppt(nowe+1)+nlcit(nowe+1)-3
818	is_b(1) = 1 + njmppt(nowe+1)
819	in_b(1) = 1 + njmppt(nowe+1)+nlcjt(nowe+1)-3
820
821	iw_b(2) = 1 + nimppt(noea+1)
822	ie_b(2) = 1 + nimppt(noea+1)+nlcit(noea+1)-3
823	is_b(2) = 1 + njmppt(noea+1)
824	in_b(2) = 1 + njmppt(noea+1)+nlcjt(noea+1)-3
825	ELSEIF(nbondi == 1) THEN
826	iw_b(1) = 1 + nimppt(nowe+1)
827	ie_b(1) = 1 + nimppt(nowe+1)+nlcit(nowe+1)-3
828	is_b(1) = 1 + njmppt(nowe+1)
829	in_b(1) = 1 + njmppt(nowe+1)+nlcjt(nowe+1)-3
830	ELSEIF(nbondi == -1) THEN
831	iw_b(2) = 1 + nimppt(noea+1)
832	ie_b(2) = 1 + nimppt(noea+1)+nlcit(noea+1)-3
833	is_b(2) = 1 + njmppt(noea+1)
834	in_b(2) = 1 + njmppt(noea+1)+nlcjt(noea+1)-3
835	ENDIF
836
837	IF(nbondj == 0) THEN
838	iw_b(3) = 1 + nimppt(noso+1)
839	ie_b(3) = 1 + nimppt(noso+1)+nlcit(noso+1)-3
840	is_b(3) = 1 + njmppt(noso+1)
841	in_b(3) = 1 + njmppt(noso+1)+nlcjt(noso+1)-3
842
843	iw_b(4) = 1 + nimppt(nono+1)
844	ie_b(4) = 1 + nimppt(nono+1)+nlcit(nono+1)-3
845	is_b(4) = 1 + njmppt(nono+1)
846	in_b(4) = 1 + njmppt(nono+1)+nlcjt(nono+1)-3
847	ELSEIF(nbondj == 1) THEN
848	iw_b(3) = 1 + nimppt(noso+1)
849	ie_b(3) = 1 + nimppt(noso+1)+nlcit(noso+1)-3
850	is_b(3) = 1 + njmppt(noso+1)
851	in_b(3) = 1 + njmppt(noso+1)+nlcjt(noso+1)-3
852	ELSEIF(nbondj == -1) THEN
853	iw_b(4) = 1 + nimppt(nono+1)
854	ie_b(4) = 1 + nimppt(nono+1)+nlcit(nono+1)-3
855	is_b(4) = 1 + njmppt(nono+1)
856	in_b(4) = 1 + njmppt(nono+1)+nlcjt(nono+1)-3
857	ENDIF
858
859	DO ib_bdy = 1, nb_bdy
860	DO igrd = 1, jpbgrd
861	icount = 0
862	icountr = 0
863	idx_bdy(ib_bdy)%nblen(igrd) = 0
864	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
865	DO ib = 1, nblendta(igrd,ib_bdy)
866	! check that data is in correct order in file
867	ibm1 = MAX(1,ib-1)
868	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
869	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
870	CALL ctl_stop('bdy_segs : ERROR : boundary data in file must be defined ', &
871	& ' in order of distance from edge nbr A utility for re-ordering ', &
872	& ' boundary coordinates and data files exists in the TOOLS/OBC directory')
873	ENDIF
874	ENDIF
875	! check if point is in local domain
876	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
877	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino ) THEN
878	!
879	icount = icount + 1
880	!
881	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
882	ENDIF
883	END DO
884	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
885	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
886	END DO ! igrd
887
888	! Allocate index arrays for this boundary set
889	!--------------------------------------------
890	ilen1 = MAXVAL( idx_bdy(ib_bdy)%nblen(:) )
891	ALLOCATE( idx_bdy(ib_bdy)%nbi (ilen1,jpbgrd) , &
892	& idx_bdy(ib_bdy)%nbj (ilen1,jpbgrd) , &
893	& idx_bdy(ib_bdy)%nbr (ilen1,jpbgrd) , &
894	& idx_bdy(ib_bdy)%nbd (ilen1,jpbgrd) , &
895	& idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) , &
896	& idx_bdy(ib_bdy)%ntreat(ilen1,jpbgrd) , &
897	& idx_bdy(ib_bdy)%nbmap (ilen1,jpbgrd) , &
898	& idx_bdy(ib_bdy)%nbw (ilen1,jpbgrd) , &
899	& idx_bdy(ib_bdy)%flagu (ilen1,jpbgrd) , &
900	& idx_bdy(ib_bdy)%flagv (ilen1,jpbgrd) )
901
902	! Dispatch mapping indices and discrete distances on each processor
903	! -----------------------------------------------------------------
904
905	com_east = 0
906	com_west = 0
907	com_south = 0
908	com_north = 0
909
910	com_east_b = 0
911	com_west_b = 0
912	com_south_b = 0
913	com_north_b = 0
914
915	DO igrd = 1, jpbgrd
916	icount = 0
917	! Loop on rimwidth to ensure outermost points come first in the local arrays.
918	DO ir=1, nn_rimwidth(ib_bdy)
919	DO ib = 1, nblendta(igrd,ib_bdy)
920	! check if point is in local domain and equals ir
921	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
922	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino .AND. &
923	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
924	!
925	icount = icount + 1
926
927	! Rather assume that boundary data indices are given on global domain
928	! TO BE DISCUSSED ?
929	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
930	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
931	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
932	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
933	! check if point has to be sent
934	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
935	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
936	if((com_east .ne. 1) .and. (ii == (nlci-1)) .and. (nbondi .le. 0)) then
937	com_east = 1
938	elseif((com_west .ne. 1) .and. (ii == 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
939	com_west = 1
940	endif
941	if((com_south .ne. 1) .and. (ij == 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
942	com_south = 1
943	elseif((com_north .ne. 1) .and. (ij == (nlcj-1)) .and. (nbondj .le. 0)) then
944	com_north = 1
945	endif
946	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
947	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
948	ENDIF
949	! check if point has to be received from a neighbour
950	IF(nbondi == 0) THEN
951	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
952	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
953	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
954	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
955	if( ii == (nlcit(nowe+1)-1) ) then
956	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
957	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
958	com_south = 1
959	elseif((ij == nlcjt(nowe+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
960	com_north = 1
961	endif
962	com_west_b = 1
963	endif
964	ENDIF
965	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
966	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
967	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
968	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
969	if( ii == 2 ) then
970	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
971	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
972	com_south = 1
973	elseif((ij == nlcjt(noea+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
974	com_north = 1
975	endif
976	com_east_b = 1
977	endif
978	ENDIF
979	ELSEIF(nbondi == 1) THEN
980	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
981	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
982	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
983	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
984	if( ii == (nlcit(nowe+1)-1) ) then
985	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
986	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
987	com_south = 1
988	elseif((ij == nlcjt(nowe+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
989	com_north = 1
990	endif
991	com_west_b = 1
992	endif
993	ENDIF
994	ELSEIF(nbondi == -1) THEN
995	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
996	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
997	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
998	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
999	if( ii == 2 ) then
1000	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
1001	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
1002	com_south = 1
1003	elseif((ij == nlcjt(noea+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
1004	com_north = 1
1005	endif
1006	com_east_b = 1
1007	endif
1008	ENDIF
1009	ENDIF
1010	IF(nbondj == 0) THEN
1011	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1012	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1013	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1014	com_north_b = 1
1015	ENDIF
1016	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
1017	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1018	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1019	com_south_b = 1
1020	ENDIF
1021	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1022	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1023	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1024	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1025	if((com_south_b .ne. 1) .and. (ij == (nlcjt(noso+1)-1))) then
1026	com_south_b = 1
1027	endif
1028	ENDIF
1029	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1030	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1031	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1032	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1033	if((com_north_b .ne. 1) .and. (ij == 2)) then
1034	com_north_b = 1
1035	endif
1036	ENDIF
1037	ELSEIF(nbondj == 1) THEN
1038	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
1039	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1040	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1041	com_south_b = 1
1042	ENDIF
1043	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1044	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1045	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1046	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1047	if((com_south_b .ne. 1) .and. (ij == (nlcjt(noso+1)-1))) then
1048	com_south_b = 1
1049	endif
1050	ENDIF
1051	ELSEIF(nbondj == -1) THEN
1052	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1053	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1054	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1055	com_north_b = 1
1056	ENDIF
1057	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1058	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1059	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1060	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1061	if((com_north_b .ne. 1) .and. (ij == 2)) then
1062	com_north_b = 1
1063	endif
1064	ENDIF
1065	ENDIF
1066	ENDDO
1067	ENDDO
1068	ENDDO
1069
1070	! definition of the i- and j- direction local boundaries arrays used for sending the boundaries
1071	IF( (com_east == 1) .and. (com_west == 1) ) THEN ; nbondi_bdy(ib_bdy) = 0
1072	ELSEIF( (com_east == 1) .and. (com_west == 0) ) THEN ; nbondi_bdy(ib_bdy) = -1
1073	ELSEIF( (com_east == 0) .and. (com_west == 1) ) THEN ; nbondi_bdy(ib_bdy) = 1
1074	ENDIF
1075	IF( (com_north == 1) .and. (com_south == 1) ) THEN ; nbondj_bdy(ib_bdy) = 0
1076	ELSEIF( (com_north == 1) .and. (com_south == 0) ) THEN ; nbondj_bdy(ib_bdy) = -1
1077	ELSEIF( (com_north == 0) .and. (com_south == 1) ) THEN ; nbondj_bdy(ib_bdy) = 1
1078	ENDIF
1079
1080	! definition of the i- and j- direction local boundaries arrays used for receiving the boundaries
1081	IF( (com_east_b == 1) .and. (com_west_b == 1) ) THEN ; nbondi_bdy_b(ib_bdy) = 0
1082	ELSEIF( (com_east_b == 1) .and. (com_west_b == 0) ) THEN ; nbondi_bdy_b(ib_bdy) = -1
1083	ELSEIF( (com_east_b == 0) .and. (com_west_b == 1) ) THEN ; nbondi_bdy_b(ib_bdy) = 1
1084	ENDIF
1085	IF( (com_north_b == 1) .and. (com_south_b == 1) ) THEN ; nbondj_bdy_b(ib_bdy) = 0
1086	ELSEIF( (com_north_b == 1) .and. (com_south_b == 0) ) THEN ; nbondj_bdy_b(ib_bdy) = -1
1087	ELSEIF( (com_north_b == 0) .and. (com_south_b == 1) ) THEN ; nbondj_bdy_b(ib_bdy) = 1
1088	ENDIF
1089
1090	! Compute rim weights for FRS scheme
1091	! ----------------------------------
1092	DO igrd = 1, jpbgrd
1093	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1094	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1095	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( REAL( nbr - 1 ) *0.5 ) ! tanh formulation
1096	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))**2. ! quadratic
1097	! idx_bdy(ib_bdy)%nbw(ib,igrd) = REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)) ! linear
1098	END DO
1099	END DO
1100
1101	! Compute damping coefficients
1102	! ----------------------------
1103	DO igrd = 1, jpbgrd
1104	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1105	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1106	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1107	& (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))*2. ! quadratic
1108	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1109	& (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))*2. ! quadratic
1110	END DO
1111	END DO
1112
1113	END DO
1114
1115	! ------------------------------------------------------
1116	! Initialise masks and find normal/tangential directions
1117	! ------------------------------------------------------
1118
1119	! Read global 2D mask at T-points: bdytmask
1120	! -----------------------------------------
1121	! bdytmask = 1 on the computational domain AND on open boundaries
1122	! = 0 elsewhere
1123
1124	bdytmask(:,:) = ssmask(:,:)
1125
1126	! Derive mask on U and V grid from mask on T grid
1127
1128	bdyumask(:,:) = 0._wp
1129	bdyvmask(:,:) = 0._wp
1130	DO ij = 1, jpjm1
1131	DO ii = 1, jpim1
1132	bdyumask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii+1, ij )
1133	bdyvmask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii ,ij+1)
1134	END DO
1135	END DO
1136	CALL lbc_lnk_multi( 'bdyini', bdyumask, 'U', 1. , bdyvmask, 'V', 1. ) ! Lateral boundary cond.
1137
1138	! bdy masks are now set to zero on boundary points:
1139	!
1140	igrd = 1
1141	DO ib_bdy = 1, nb_bdy
1142	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1143	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1144	END DO
1145	END DO
1146	!
1147	igrd = 2
1148	DO ib_bdy = 1, nb_bdy
1149	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1150	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1151	END DO
1152	END DO
1153	!
1154	igrd = 3
1155	DO ib_bdy = 1, nb_bdy
1156	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1157	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1158	END DO
1159	END DO
1160
1161	! For the flagu/flagv calculation below we require a version of fmask without
1162	! the land boundary condition (shlat) included:
1163	zfmask(:,:) = 0
1164	DO ij = 2, jpjm1
1165	DO ii = 2, jpim1
1166	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1167	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1168	END DO
1169	END DO
1170
1171	! Lateral boundary conditions
1172	CALL lbc_lnk( 'bdyini', zfmask, 'F', 1. )
1173	CALL lbc_lnk_multi( 'bdyini', bdyumask, 'U', 1. , bdyvmask, 'V', 1., bdytmask, 'T', 1. )
1174	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1175
1176	idx_bdy(ib_bdy)%flagu(:,:) = 0._wp
1177	idx_bdy(ib_bdy)%flagv(:,:) = 0._wp
1178	icount = 0
1179
1180	! Calculate relationship of U direction to the local orientation of the boundary
1181	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1182	! flagu = 0 : u is tangential
1183	! flagu = 1 : u is normal to the boundary and is direction is inward
1184
1185	DO igrd = 1, jpbgrd
1186	SELECT CASE( igrd )
1187	CASE( 1 ) ; pmask => umask (:,:,1) ; i_offset = 0
1188	CASE( 2 ) ; pmask => bdytmask(:,:) ; i_offset = 1
1189	CASE( 3 ) ; pmask => zfmask (:,:) ; i_offset = 0
1190	END SELECT
1191	icount = 0
1192	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1193	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1194	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1195	zefl = pmask(nbi+i_offset-1,nbj)
1196	zwfl = pmask(nbi+i_offset,nbj)
1197	! This error check only works if you are using the bdyXmask arrays
1198	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1199	icount = icount + 1
1200	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1201	ELSE
1202	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1203	ENDIF
1204	END DO
1205	IF( icount /= 0 ) THEN
1206	WRITE(ctmp1,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1207	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1208	WRITE(ctmp2,*) ' ========== '
1209	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1210	ENDIF
1211	END DO
1212
1213	! Calculate relationship of V direction to the local orientation of the boundary
1214	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1215	! flagv = 0 : v is tangential
1216	! flagv = 1 : v is normal to the boundary and is direction is inward
1217
1218	DO igrd = 1, jpbgrd
1219	SELECT CASE( igrd )
1220	CASE( 1 ) ; pmask => vmask (:,:,1) ; j_offset = 0
1221	CASE( 2 ) ; pmask => zfmask(:,:) ; j_offset = 0
1222	CASE( 3 ) ; pmask => bdytmask ; j_offset = 1
1223	END SELECT
1224	icount = 0
1225	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1226	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1227	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1228	znfl = pmask(nbi,nbj+j_offset-1)
1229	zsfl = pmask(nbi,nbj+j_offset )
1230	! This error check only works if you are using the bdyXmask arrays
1231	IF( j_offset == 1 .and. znfl + zsfl == 2 ) THEN
1232	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1233	icount = icount + 1
1234	ELSE
1235	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1236	END IF
1237	END DO
1238	IF( icount /= 0 ) THEN
1239	WRITE(ctmp1,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1240	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1241	WRITE(ctmp2,*) ' ========== '
1242	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1243	ENDIF
1244	END DO
1245	!
1246	END DO
1247
1248	! detect corners and their orientation index 1 to 4 depending on the orientation
1249	! detect geometries with 3 neighbours index 5 to 8 depending on the orientation
1250	! else index 0
1251	DO ib_bdy = 1, nb_bdy
1252	DO igrd = 1, jpbgrd
1253	SELECT CASE( igrd )
1254	CASE( 1 ) ; pmask => bdytmask
1255	CASE( 2 ) ; pmask => bdyumask
1256	CASE( 3 ) ; pmask => bdyvmask
1257	END SELECT
1258	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1259	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
1260	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
1261	!IF( ii == 1 .OR. ii == jpi .OR. ij == 1 .OR. ij == jpj ) CYCLE
1262	llnobdy = pmask(ii ,ij+1) == 1.
1263	llsobdy = pmask(ii ,ij-1) == 1.
1264	lleabdy = pmask(ii+1,ij ) == 1.
1265	llwebdy = pmask(ii-1,ij ) == 1.
1266	inbdy = COUNT( (/ llnobdy, llsobdy, lleabdy, llwebdy /) )
1267	IF( inbdy == 0 ) THEN ! no neighbours -> interior of a corner
1268	! ! ! _____ ! _____
1269	! 1 \| o ! 2 o \| ! 3 \| x ! 4 x \|
1270	! \|_x_ _ ! _ _x_\| ! \| o ! o \|
1271	IF( pmask(ii+1,ij+1) == 1. ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 1
1272	IF( pmask(ii-1,ij+1) == 1. ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 2
1273	IF( pmask(ii+1,ij-1) == 1. ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 3
1274	IF( pmask(ii-1,ij-1) == 1. ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 4
1275	END IF
1276	IF( inbdy == 1 ) THEN ! middle of linear bdy
1277	idx_bdy(ib_bdy)%ntreat(ib,igrd) = 0 ! regular treatment with flags
1278	END IF
1279	IF( inbdy == 2 ) THEN ! exterior of a corner
1280	idx_bdy(ib_bdy)%ntreat(ib,igrd) = 0 ! regular treatment with flags
1281	END IF
1282	IF( inbdy == 3 ) THEN ! 3 neighbours __ __
1283	! \|_ o ! o _\| ! \|_\| ! o
1284	! 5 _\| x o ! 6 o x \|_ ! 7 o x o ! 8 o x o
1285	! \| o ! o \| ! o ! __\|¨\|__
1286	IF( llnobdy .AND. lleabdy .AND. llsobdy ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 5
1287	IF( llnobdy .AND. llwebdy .AND. llsobdy ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 6
1288	IF( llwebdy .AND. llsobdy .AND. lleabdy ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 7
1289	IF( llwebdy .AND. llnobdy .AND. lleabdy ) idx_bdy(ib_bdy)%ntreat(ib,igrd) = 8
1290	END IF
1291	IF( inbdy == 4 ) THEN
1292	WRITE(ctmp1,*) ' E R R O R : Problem with ',cgrid(igrd) ,' grid points,', &
1293	' some points on boundary set ', ib_bdy, ' have 4 neighbours'
1294	WRITE(ctmp2,*) ' ========== '
1295	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1296	END IF
1297	END DO
1298	END DO
1299	!CALL lbc_lnk( 'bdyini', )
1300	END DO
1301	!
1302	! Tidy up
1303	!--------
1304	IF( nb_bdy>0 ) DEALLOCATE( nbidta, nbjdta, nbrdta )
1305	!
1306	END SUBROUTINE bdy_segs
1307
1308	SUBROUTINE bdy_ctl_seg
1309	!!----------------------------------------------------------------------
1310	!! * ROUTINE bdy_ctl_seg *
1311	!!
1312	!! ** Purpose : Check straight open boundary segments location
1313	!!
1314	!! ** Method : - Look for open boundary corners
1315	!! - Check that segments start or end on land
1316	!!----------------------------------------------------------------------
1317	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1318	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1319	REAL(wp), DIMENSION(2) :: ztestmask
1320	!!----------------------------------------------------------------------
1321	!
1322	IF (lwp) WRITE(numout,*) ' '
1323	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1324	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1325	!
1326	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1327	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1328	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1329	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1330	! 1. Check bounds
1331	!----------------
1332	DO ib = 1, nbdysegn
1333	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1334	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1335	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1336	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1337	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1338	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1339	END DO
1340	!
1341	DO ib = 1, nbdysegs
1342	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1343	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1344	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1345	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1346	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1347	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1348	END DO
1349	!
1350	DO ib = 1, nbdysege
1351	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1352	IF ((jpieob(ib).ge.jpiglo-1).or.&
1353	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1354	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1355	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1356	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1357	END DO
1358	!
1359	DO ib = 1, nbdysegw
1360	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1361	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1362	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1363	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1364	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1365	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1366	ENDDO
1367	!
1368	!
1369	! 2. Look for segment crossings
1370	!------------------------------
1371	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1372	!
1373	itest = 0 ! corner number
1374	!
1375	! flag to detect if start or end of open boundary belongs to a corner
1376	! if not (=0), it must be on land.
1377	! if a corner is detected, save bdy package number for further tests
1378	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1379	! South/West crossings
1380	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1381	DO ib1 = 1, nbdysegw
1382	DO ib2 = 1, nbdysegs
1383	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1384	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1385	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1386	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1387	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1388	! We have a possible South-West corner
1389	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1390	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1391	icornw(ib1,1) = npckgs(ib2)
1392	icorns(ib2,1) = npckgw(ib1)
1393	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1394	WRITE(ctmp1,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1395	& jpisft(ib2), jpjwft(ib1)
1396	WRITE(ctmp2,*) ' ========== Not allowed yet'
1397	WRITE(ctmp3,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1398	& ' and South segment: ',npckgs(ib2)
1399	CALL ctl_stop( ' ', ctmp1, ctmp2, ctmp3, ' ' )
1400	ELSE
1401	WRITE(ctmp1,*) ' E R R O R : Check South and West Open boundary indices'
1402	WRITE(ctmp2,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1403	& ' and South segment: ',npckgs(ib2)
1404	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1405	END IF
1406	END IF
1407	END DO
1408	END DO
1409	END IF
1410	!
1411	! South/East crossings
1412	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1413	DO ib1 = 1, nbdysege
1414	DO ib2 = 1, nbdysegs
1415	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1416	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1417	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1418	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1419	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1420	! We have a possible South-East corner
1421	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1422	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1423	icorne(ib1,1) = npckgs(ib2)
1424	icorns(ib2,2) = npckge(ib1)
1425	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1426	WRITE(ctmp1,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1427	& jpisdt(ib2), jpjeft(ib1)
1428	WRITE(ctmp2,*) ' ========== Not allowed yet'
1429	WRITE(ctmp3,*) ' Crossing problem with East segment: ',npckge(ib1), &
1430	& ' and South segment: ',npckgs(ib2)
1431	CALL ctl_stop( ' ', ctmp1, ctmp2, ctmp3, ' ' )
1432	ELSE
1433	WRITE(ctmp1,*) ' E R R O R : Check South and East Open boundary indices'
1434	WRITE(ctmp2,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1435	& ' and South segment: ',npckgs(ib2)
1436	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1437	END IF
1438	END IF
1439	END DO
1440	END DO
1441	END IF
1442	!
1443	! North/West crossings
1444	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1445	DO ib1 = 1, nbdysegw
1446	DO ib2 = 1, nbdysegn
1447	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1448	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1449	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1450	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1451	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1452	! We have a possible North-West corner
1453	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1454	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1455	icornw(ib1,2) = npckgn(ib2)
1456	icornn(ib2,1) = npckgw(ib1)
1457	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1458	WRITE(ctmp1,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1459	& jpinft(ib2), jpjwdt(ib1)
1460	WRITE(ctmp2,*) ' ========== Not allowed yet'
1461	WRITE(ctmp3,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1462	& ' and North segment: ',npckgn(ib2)
1463	CALL ctl_stop( ' ', ctmp1, ctmp2, ctmp3, ' ' )
1464	ELSE
1465	WRITE(ctmp1,*) ' E R R O R : Check North and West Open boundary indices'
1466	WRITE(ctmp2,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1467	& ' and North segment: ',npckgn(ib2)
1468	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1469	END IF
1470	END IF
1471	END DO
1472	END DO
1473	END IF
1474	!
1475	! North/East crossings
1476	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1477	DO ib1 = 1, nbdysege
1478	DO ib2 = 1, nbdysegn
1479	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1480	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1481	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1482	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1483	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1484	! We have a possible North-East corner
1485	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1486	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1487	icorne(ib1,2) = npckgn(ib2)
1488	icornn(ib2,2) = npckge(ib1)
1489	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1490	WRITE(ctmp1,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1491	& jpindt(ib2), jpjedt(ib1)
1492	WRITE(ctmp2,*) ' ========== Not allowed yet'
1493	WRITE(ctmp3,*) ' Crossing problem with East segment: ',npckge(ib1), &
1494	& ' and North segment: ',npckgn(ib2)
1495	CALL ctl_stop( ' ', ctmp1, ctmp2, ctmp3, ' ' )
1496	ELSE
1497	WRITE(ctmp1,*) ' E R R O R : Check North and East Open boundary indices'
1498	WRITE(ctmp2,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1499	& ' and North segment: ',npckgn(ib2)
1500	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1501	END IF
1502	END IF
1503	END DO
1504	END DO
1505	END IF
1506	!
1507	! 3. Check if segment extremities are on land
1508	!--------------------------------------------
1509	!
1510	! West segments
1511	DO ib = 1, nbdysegw
1512	! get mask at boundary extremities:
1513	ztestmask(1:2)=0.
1514	DO ji = 1, jpi
1515	DO jj = 1, jpj
1516	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1517	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1518	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1519	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1520	END DO
1521	END DO
1522	CALL mpp_sum( 'bdyini', ztestmask, 2 ) ! sum over the global domain
1523
1524	IF (ztestmask(1)==1) THEN
1525	IF (icornw(ib,1)==0) THEN
1526	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1527	WRITE(ctmp2,*) ' ========== does not start on land or on a corner'
1528	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1529	ELSE
1530	! This is a corner
1531	IF(lwp) WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1532	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1533	itest=itest+1
1534	ENDIF
1535	ENDIF
1536	IF (ztestmask(2)==1) THEN
1537	IF (icornw(ib,2)==0) THEN
1538	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1539	WRITE(ctmp2,*) ' ========== does not end on land or on a corner'
1540	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1541	ELSE
1542	! This is a corner
1543	IF(lwp) WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1544	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1545	itest=itest+1
1546	ENDIF
1547	ENDIF
1548	END DO
1549	!
1550	! East segments
1551	DO ib = 1, nbdysege
1552	! get mask at boundary extremities:
1553	ztestmask(1:2)=0.
1554	DO ji = 1, jpi
1555	DO jj = 1, jpj
1556	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1557	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1558	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1559	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1560	END DO
1561	END DO
1562	CALL mpp_sum( 'bdyini', ztestmask, 2 ) ! sum over the global domain
1563
1564	IF (ztestmask(1)==1) THEN
1565	IF (icorne(ib,1)==0) THEN
1566	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckge(ib)
1567	WRITE(ctmp2,*) ' ========== does not start on land or on a corner'
1568	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1569	ELSE
1570	! This is a corner
1571	IF(lwp) WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1572	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1573	itest=itest+1
1574	ENDIF
1575	ENDIF
1576	IF (ztestmask(2)==1) THEN
1577	IF (icorne(ib,2)==0) THEN
1578	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckge(ib)
1579	WRITE(ctmp2,*) ' ========== does not end on land or on a corner'
1580	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1581	ELSE
1582	! This is a corner
1583	IF(lwp) WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1584	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1585	itest=itest+1
1586	ENDIF
1587	ENDIF
1588	END DO
1589	!
1590	! South segments
1591	DO ib = 1, nbdysegs
1592	! get mask at boundary extremities:
1593	ztestmask(1:2)=0.
1594	DO ji = 1, jpi
1595	DO jj = 1, jpj
1596	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1597	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1598	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1599	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1600	END DO
1601	END DO
1602	CALL mpp_sum( 'bdyini', ztestmask, 2 ) ! sum over the global domain
1603
1604	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1605	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1606	WRITE(ctmp2,*) ' ========== does not start on land or on a corner'
1607	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1608	ENDIF
1609	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1610	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1611	WRITE(ctmp2,*) ' ========== does not end on land or on a corner'
1612	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1613	ENDIF
1614	END DO
1615	!
1616	! North segments
1617	DO ib = 1, nbdysegn
1618	! get mask at boundary extremities:
1619	ztestmask(1:2)=0.
1620	DO ji = 1, jpi
1621	DO jj = 1, jpj
1622	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1623	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1624	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1625	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1626	END DO
1627	END DO
1628	CALL mpp_sum( 'bdyini', ztestmask, 2 ) ! sum over the global domain
1629
1630	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1631	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1632	WRITE(ctmp2,*) ' ========== does not start on land'
1633	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1634	ENDIF
1635	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1636	WRITE(ctmp1,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1637	WRITE(ctmp2,*) ' ========== does not end on land'
1638	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1639	ENDIF
1640	END DO
1641	!
1642	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1643	!
1644	! Other tests TBD:
1645	! segments completly on land
1646	! optimized open boundary array length according to landmask
1647	! Nudging layers that overlap with interior domain
1648	!
1649	END SUBROUTINE bdy_ctl_seg
1650
1651
1652	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1653	!!----------------------------------------------------------------------
1654	!! * ROUTINE bdy_ctl_corn *
1655	!!
1656	!! ** Purpose : Check numerical schemes consistency between
1657	!! segments having a common corner
1658	!!
1659	!! ** Method :
1660	!!----------------------------------------------------------------------
1661	INTEGER, INTENT(in) :: ib1, ib2
1662	INTEGER :: itest
1663	!!----------------------------------------------------------------------
1664	itest = 0
1665
1666	IF( cn_dyn2d(ib1) /= cn_dyn2d(ib2) ) itest = itest + 1
1667	IF( cn_dyn3d(ib1) /= cn_dyn3d(ib2) ) itest = itest + 1
1668	IF( cn_tra (ib1) /= cn_tra (ib2) ) itest = itest + 1
1669	!
1670	IF( nn_dyn2d_dta(ib1) /= nn_dyn2d_dta(ib2) ) itest = itest + 1
1671	IF( nn_dyn3d_dta(ib1) /= nn_dyn3d_dta(ib2) ) itest = itest + 1
1672	IF( nn_tra_dta (ib1) /= nn_tra_dta (ib2) ) itest = itest + 1
1673	!
1674	IF( nn_rimwidth(ib1) /= nn_rimwidth(ib2) ) itest = itest + 1
1675	!
1676	IF( itest>0 ) THEN
1677	WRITE(ctmp1,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1678	WRITE(ctmp2,*) ' ========== have different open bdy schemes'
1679	CALL ctl_stop( ' ', ctmp1, ctmp2, ' ' )
1680	ENDIF
1681	!
1682	END SUBROUTINE bdy_ctl_corn
1683
1684	!!=================================================================================
1685	END MODULE bdyini

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