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bdyini.F90 in branches/2013/dev_r3987_METO1_MERCATOR6_OBC_BDY_merge/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

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source: branches/2013/dev_r3987_METO1_MERCATOR6_OBC_BDY_merge/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 3991

Last change on this file since 3991 was 3991, checked in by davestorkey, 11 years ago
New branch from later branch point on trunk so you can do a clean diff of all the changes. Copy in changes from dev_r3891_METO1_MERCATOR6_OBC_BDY_merge.
Property svn:keywords set to `Id`
File size: 80.6 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) Updates for the
15	!! optimization of BDY communications
16	!!----------------------------------------------------------------------
17	#if defined key_bdy
18	!!----------------------------------------------------------------------
19	!! 'key_bdy' Unstructured Open Boundary Conditions
20	!!----------------------------------------------------------------------
21	!! bdy_init : Initialization of unstructured open boundaries
22	!!----------------------------------------------------------------------
23	USE timing ! Timing
24	USE oce ! ocean dynamics and tracers variables
25	USE dom_oce ! ocean space and time domain
26	USE bdy_oce ! unstructured open boundary conditions
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	USE sbctide, ONLY: lk_tide ! Tidal forcing or not
32	USE phycst, ONLY: rday
33
34	IMPLICIT NONE
35	PRIVATE
36
37	PUBLIC bdy_init ! routine called in nemo_init
38
39	INTEGER, PARAMETER :: jp_nseg = 100
40	INTEGER, PARAMETER :: nrimmax = 20 ! maximum rimwidth in structured
41	! open boundary data files
42	! Straight open boundary segment parameters:
43	INTEGER :: nbdysege, nbdysegw, nbdysegn, nbdysegs
44	INTEGER, DIMENSION(jp_nseg) :: jpieob, jpjedt, jpjeft, npckge
45	INTEGER, DIMENSION(jp_nseg) :: jpiwob, jpjwdt, jpjwft, npckgw
46	INTEGER, DIMENSION(jp_nseg) :: jpjnob, jpindt, jpinft, npckgn
47	INTEGER, DIMENSION(jp_nseg) :: jpjsob, jpisdt, jpisft, npckgs
48	!!----------------------------------------------------------------------
49	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
50	!! $Id$
51	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
52	!!----------------------------------------------------------------------
53	CONTAINS
54
55	SUBROUTINE bdy_init
56	!!----------------------------------------------------------------------
57	!! * ROUTINE bdy_init *
58	!!
59	!! ** Purpose : Initialization of the dynamics and tracer fields with
60	!! unstructured open boundaries.
61	!!
62	!! ** Method : Read initialization arrays (mask, indices) to identify
63	!! an unstructured open boundary
64	!!
65	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
66	!!----------------------------------------------------------------------
67	! namelist variables
68	!-------------------
69	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile
70	CHARACTER(LEN=1) :: ctypebdy
71	INTEGER :: nbdyind, nbdybeg, nbdyend
72
73	! local variables
74	!-------------------
75	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
76	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
77	INTEGER :: iw, ie, is, in, inum, id_dummy ! - -
78	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
79	INTEGER :: jpbdtau, jpbdtas ! - -
80	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
81	INTEGER :: i_offset, j_offset ! - -
82	INTEGER, POINTER :: nbi, nbj, nbr ! short cuts
83	REAL(wp), POINTER :: flagu, flagv ! - -
84	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
85	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
86	INTEGER, DIMENSION (2) :: kdimsz
87	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
88	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
89	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
90	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
91	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
92	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
93	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
94
95	!!
96	NAMELIST/nambdy/ nb_bdy, ln_coords_file, cn_coords_file, &
97	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
98	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
99	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
100	#if defined key_lim2
101	& cn_ice_lim2, nn_ice_lim2_dta, &
102	#endif
103	& ln_vol, nn_volctl, nn_rimwidth
104	!!
105	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
106
107	!!----------------------------------------------------------------------
108
109	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
110
111	IF( bdy_oce_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'bdy_init : unable to allocate oce arrays' )
112
113	IF(lwp) WRITE(numout,*)
114	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
115	IF(lwp) WRITE(numout,*) '~~~~~~~~'
116	!
117
118	IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
119	& ' and general open boundary condition are not compatible' )
120
121	cgrid= (/'t','u','v'/)
122
123	! -----------------------------------------
124	! Initialise and read namelist parameters
125	! -----------------------------------------
126
127	nb_bdy = 0
128	ln_coords_file(:) = .false.
129	cn_coords_file(:) = ''
130	ln_mask_file = .false.
131	cn_mask_file(:) = ''
132	cn_dyn2d(:) = ''
133	nn_dyn2d_dta(:) = -1 ! uninitialised flag
134	cn_dyn3d(:) = ''
135	nn_dyn3d_dta(:) = -1 ! uninitialised flag
136	cn_tra(:) = ''
137	nn_tra_dta(:) = -1 ! uninitialised flag
138	ln_tra_dmp(:) = .false.
139	ln_dyn3d_dmp(:) = .false.
140	rn_time_dmp(:) = 1.
141	#if defined key_lim2
142	cn_ice_lim2(:) = ''
143	nn_ice_lim2_dta(:)= -1 ! uninitialised flag
144	#endif
145	ln_vol = .false.
146	nn_volctl = -1 ! uninitialised flag
147	nn_rimwidth(:) = -1 ! uninitialised flag
148
149	REWIND( numnam )
150	READ ( numnam, nambdy )
151
152	! -----------------------------------------
153	! Check and write out namelist parameters
154	! -----------------------------------------
155	! ! control prints
156	IF(lwp) WRITE(numout,*) ' nambdy'
157
158	IF( nb_bdy .eq. 0 ) THEN
159	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
160	ELSE
161	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ',nb_bdy
162	ENDIF
163
164	DO ib_bdy = 1,nb_bdy
165	IF(lwp) WRITE(numout,*) ' '
166	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
167
168	IF( ln_coords_file(ib_bdy) ) THEN
169	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
170	ELSE
171	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
172	ENDIF
173	IF(lwp) WRITE(numout,*)
174
175	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
176	SELECT CASE( cn_dyn2d(ib_bdy) )
177	CASE('none')
178	IF(lwp) WRITE(numout,*) ' no open boundary condition'
179	dta_bdy(ib_bdy)%ll_ssh = .false.
180	dta_bdy(ib_bdy)%ll_u2d = .false.
181	dta_bdy(ib_bdy)%ll_v2d = .false.
182	CASE('frs')
183	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
184	dta_bdy(ib_bdy)%ll_ssh = .false.
185	dta_bdy(ib_bdy)%ll_u2d = .true.
186	dta_bdy(ib_bdy)%ll_v2d = .true.
187	CASE('flather')
188	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
189	dta_bdy(ib_bdy)%ll_ssh = .true.
190	dta_bdy(ib_bdy)%ll_u2d = .true.
191	dta_bdy(ib_bdy)%ll_v2d = .true.
192	CASE('orlanski')
193	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
194	dta_bdy(ib_bdy)%ll_ssh = .false.
195	dta_bdy(ib_bdy)%ll_u2d = .true.
196	dta_bdy(ib_bdy)%ll_v2d = .true.
197	CASE('orlanski_npo')
198	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) 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 DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
203	END SELECT
204	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
205	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
206	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
207	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
208	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
209	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
210	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
211	END SELECT
212	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
213	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
214	ENDIF
215	ENDIF
216	IF(lwp) WRITE(numout,*)
217
218	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
219	SELECT CASE( cn_dyn3d(ib_bdy) )
220	CASE('none')
221	IF(lwp) WRITE(numout,*) ' no open boundary condition'
222	dta_bdy(ib_bdy)%ll_u3d = .false.
223	dta_bdy(ib_bdy)%ll_v3d = .false.
224	CASE('frs')
225	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
226	dta_bdy(ib_bdy)%ll_u3d = .true.
227	dta_bdy(ib_bdy)%ll_v3d = .true.
228	CASE('specified')
229	IF(lwp) WRITE(numout,*) ' Specified value'
230	dta_bdy(ib_bdy)%ll_u3d = .true.
231	dta_bdy(ib_bdy)%ll_v3d = .true.
232	CASE('zero')
233	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
234	dta_bdy(ib_bdy)%ll_u3d = .false.
235	dta_bdy(ib_bdy)%ll_v3d = .false.
236	CASE('orlanski')
237	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
238	dta_bdy(ib_bdy)%ll_u3d = .true.
239	dta_bdy(ib_bdy)%ll_v3d = .true.
240	CASE('orlanski_npo')
241	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
242	dta_bdy(ib_bdy)%ll_u3d = .true.
243	dta_bdy(ib_bdy)%ll_v3d = .true.
244	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
245	END SELECT
246	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
247	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
248	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
249	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
250	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
251	END SELECT
252	ENDIF
253
254	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
255	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
256	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
257	ln_dyn3d_dmp(ib_bdy)=.false.
258	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
259	CALL ctl_stop( 'Use FRS OR relaxation' )
260	ELSE
261	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
262	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
263	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
264	dta_bdy(ib_bdy)%ll_u3d = .true.
265	dta_bdy(ib_bdy)%ll_v3d = .true.
266	ENDIF
267	ELSE
268	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
269	ENDIF
270	IF(lwp) WRITE(numout,*)
271
272	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
273	SELECT CASE( cn_tra(ib_bdy) )
274	CASE('none')
275	IF(lwp) WRITE(numout,*) ' no open boundary condition'
276	dta_bdy(ib_bdy)%ll_tem = .false.
277	dta_bdy(ib_bdy)%ll_sal = .false.
278	CASE('frs')
279	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
280	dta_bdy(ib_bdy)%ll_tem = .true.
281	dta_bdy(ib_bdy)%ll_sal = .true.
282	CASE('specified')
283	IF(lwp) WRITE(numout,*) ' Specified value'
284	dta_bdy(ib_bdy)%ll_tem = .true.
285	dta_bdy(ib_bdy)%ll_sal = .true.
286	CASE('neumann')
287	IF(lwp) WRITE(numout,*) ' Neumann conditions'
288	dta_bdy(ib_bdy)%ll_tem = .false.
289	dta_bdy(ib_bdy)%ll_sal = .false.
290	CASE('runoff')
291	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
292	dta_bdy(ib_bdy)%ll_tem = .false.
293	dta_bdy(ib_bdy)%ll_sal = .false.
294	CASE('orlanski')
295	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
296	dta_bdy(ib_bdy)%ll_tem = .true.
297	dta_bdy(ib_bdy)%ll_sal = .true.
298	CASE('orlanski_npo')
299	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
300	dta_bdy(ib_bdy)%ll_tem = .true.
301	dta_bdy(ib_bdy)%ll_sal = .true.
302	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
303	END SELECT
304	IF( cn_tra(ib_bdy) /= 'none' ) THEN
305	SELECT CASE( nn_tra_dta(ib_bdy) ) !
306	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
307	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
308	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
309	END SELECT
310	ENDIF
311
312	IF ( ln_tra_dmp(ib_bdy) ) THEN
313	IF ( cn_tra(ib_bdy) == 'none' ) THEN
314	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
315	ln_tra_dmp(ib_bdy)=.false.
316	ELSEIF ( cn_tra(ib_bdy) == 'frs' ) THEN
317	CALL ctl_stop( 'Use FRS OR relaxation' )
318	ELSE
319	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
320	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
321	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
322	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
323	dta_bdy(ib_bdy)%ll_tem = .true.
324	dta_bdy(ib_bdy)%ll_sal = .true.
325	ENDIF
326	ELSE
327	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
328	ENDIF
329	IF(lwp) WRITE(numout,*)
330
331	#if defined key_lim2
332	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
333	SELECT CASE( cn_ice_lim2(ib_bdy) )
334	CASE('none')
335	IF(lwp) WRITE(numout,*) ' no open boundary condition'
336	dta_bdy(ib_bdy)%ll_frld = .false.
337	dta_bdy(ib_bdy)%ll_hicif = .false.
338	dta_bdy(ib_bdy)%ll_hsnif = .false.
339	CASE('frs')
340	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
341	dta_bdy(ib_bdy)%ll_frld = .true.
342	dta_bdy(ib_bdy)%ll_hicif = .true.
343	dta_bdy(ib_bdy)%ll_hsnif = .true.
344	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim2' )
345	END SELECT
346	IF( cn_ice_lim2(ib_bdy) /= 'none' ) THEN
347	SELECT CASE( nn_ice_lim2_dta(ib_bdy) ) !
348	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
349	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
350	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim2_dta must be 0 or 1' )
351	END SELECT
352	ENDIF
353	IF(lwp) WRITE(numout,*)
354	#endif
355
356	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
357	IF(lwp) WRITE(numout,*)
358
359	ENDDO
360
361	IF (nb_bdy .gt. 0) THEN
362	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
363	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
364	IF(lwp) WRITE(numout,*)
365	SELECT CASE ( nn_volctl )
366	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
367	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
368	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
369	END SELECT
370	IF(lwp) WRITE(numout,*)
371	ELSE
372	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
373	IF(lwp) WRITE(numout,*)
374	ENDIF
375	ENDIF
376
377	! -------------------------------------------------
378	! Initialise indices arrays for open boundaries
379	! -------------------------------------------------
380
381	! Work out global dimensions of boundary data
382	! ---------------------------------------------
383	REWIND( numnam )
384
385	nblendta(:,:) = 0
386	nbdysege = 0
387	nbdysegw = 0
388	nbdysegn = 0
389	nbdysegs = 0
390	icount = 0 ! count user defined segments
391	! Dimensions below are used to allocate arrays to read external data
392	jpbdtas = 1 ! Maximum size of boundary data (structured case)
393	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
394
395	DO ib_bdy = 1, nb_bdy
396
397	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
398
399	icount = icount + 1
400	! No REWIND here because may need to read more than one nambdy_index namelist.
401	READ ( numnam, nambdy_index )
402
403	SELECT CASE ( TRIM(ctypebdy) )
404	CASE( 'N' )
405	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
406	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
407	nbdybeg = 2
408	nbdyend = jpiglo - 1
409	ENDIF
410	nbdysegn = nbdysegn + 1
411	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
412	jpjnob(nbdysegn) = nbdyind
413	jpindt(nbdysegn) = nbdybeg
414	jpinft(nbdysegn) = nbdyend
415	!
416	CASE( 'S' )
417	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
418	nbdyind = 2 ! set boundary to whole side of model domain.
419	nbdybeg = 2
420	nbdyend = jpiglo - 1
421	ENDIF
422	nbdysegs = nbdysegs + 1
423	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
424	jpjsob(nbdysegs) = nbdyind
425	jpisdt(nbdysegs) = nbdybeg
426	jpisft(nbdysegs) = nbdyend
427	!
428	CASE( 'E' )
429	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
430	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
431	nbdybeg = 2
432	nbdyend = jpjglo - 1
433	ENDIF
434	nbdysege = nbdysege + 1
435	npckge(nbdysege) = ib_bdy ! Save bdy package number
436	jpieob(nbdysege) = nbdyind
437	jpjedt(nbdysege) = nbdybeg
438	jpjeft(nbdysege) = nbdyend
439	!
440	CASE( 'W' )
441	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
442	nbdyind = 2 ! set boundary to whole side of model domain.
443	nbdybeg = 2
444	nbdyend = jpjglo - 1
445	ENDIF
446	nbdysegw = nbdysegw + 1
447	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
448	jpiwob(nbdysegw) = nbdyind
449	jpjwdt(nbdysegw) = nbdybeg
450	jpjwft(nbdysegw) = nbdyend
451	!
452	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
453	END SELECT
454
455	! For simplicity we assume that in case of straight bdy, arrays have the same length
456	! (even if it is true that last tangential velocity points
457	! are useless). This simplifies a little bit boundary data format (and agrees with format
458	! used so far in obc package)
459
460	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
461	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
462	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
463	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
464
465	ELSE ! Read size of arrays in boundary coordinates file.
466	CALL iom_open( cn_coords_file(ib_bdy), inum )
467	DO igrd = 1, jpbgrd
468	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
469	nblendta(igrd,ib_bdy) = kdimsz(1)
470	jpbdtau = MAX(jpbdtau, kdimsz(1))
471	ENDDO
472	CALL iom_close( inum )
473
474	ENDIF
475
476	ENDDO ! ib_bdy
477
478	IF (nb_bdy>0) THEN
479	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
480
481	! Allocate arrays
482	!---------------
483	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
484	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
485
486	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
487	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
488	!
489	ENDIF
490
491	! Now look for crossings in user (namelist) defined open boundary segments:
492	!--------------------------------------------------------------------------
493	IF ( icount>0 ) CALL bdy_ctl_seg
494
495	! Calculate global boundary index arrays or read in from file
496	!------------------------------------------------------------
497	! 1. Read global index arrays from boundary coordinates file.
498	DO ib_bdy = 1, nb_bdy
499
500	IF( ln_coords_file(ib_bdy) ) THEN
501
502	CALL iom_open( cn_coords_file(ib_bdy), inum )
503	DO igrd = 1, jpbgrd
504	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
505	DO ii = 1,nblendta(igrd,ib_bdy)
506	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
507	END DO
508	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
509	DO ii = 1,nblendta(igrd,ib_bdy)
510	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
511	END DO
512	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
513	DO ii = 1,nblendta(igrd,ib_bdy)
514	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
515	END DO
516
517	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
518	IF(lwp) WRITE(numout,*)
519	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
520	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
521	IF (ibr_max < nn_rimwidth(ib_bdy)) &
522	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
523	END DO
524	CALL iom_close( inum )
525
526	ENDIF
527
528	ENDDO
529
530	! 2. Now fill indices corresponding to straight open boundary arrays:
531	! East
532	!-----
533	DO iseg = 1, nbdysege
534	ib_bdy = npckge(iseg)
535	!
536	! ------------ T points -------------
537	igrd=1
538	icount=0
539	DO ir = 1, nn_rimwidth(ib_bdy)
540	DO ij = jpjedt(iseg), jpjeft(iseg)
541	icount = icount + 1
542	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
543	nbjdta(icount, igrd, ib_bdy) = ij
544	nbrdta(icount, igrd, ib_bdy) = ir
545	ENDDO
546	ENDDO
547	!
548	! ------------ U points -------------
549	igrd=2
550	icount=0
551	DO ir = 1, nn_rimwidth(ib_bdy)
552	DO ij = jpjedt(iseg), jpjeft(iseg)
553	icount = icount + 1
554	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
555	nbjdta(icount, igrd, ib_bdy) = ij
556	nbrdta(icount, igrd, ib_bdy) = ir
557	ENDDO
558	ENDDO
559	!
560	! ------------ V points -------------
561	igrd=3
562	icount=0
563	DO ir = 1, nn_rimwidth(ib_bdy)
564	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
565	DO ij = jpjedt(iseg), jpjeft(iseg)
566	icount = icount + 1
567	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
568	nbjdta(icount, igrd, ib_bdy) = ij
569	nbrdta(icount, igrd, ib_bdy) = ir
570	ENDDO
571	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
572	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
573	ENDDO
574	ENDDO
575	!
576	! West
577	!-----
578	DO iseg = 1, nbdysegw
579	ib_bdy = npckgw(iseg)
580	!
581	! ------------ T points -------------
582	igrd=1
583	icount=0
584	DO ir = 1, nn_rimwidth(ib_bdy)
585	DO ij = jpjwdt(iseg), jpjwft(iseg)
586	icount = icount + 1
587	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
588	nbjdta(icount, igrd, ib_bdy) = ij
589	nbrdta(icount, igrd, ib_bdy) = ir
590	ENDDO
591	ENDDO
592	!
593	! ------------ U points -------------
594	igrd=2
595	icount=0
596	DO ir = 1, nn_rimwidth(ib_bdy)
597	DO ij = jpjwdt(iseg), jpjwft(iseg)
598	icount = icount + 1
599	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
600	nbjdta(icount, igrd, ib_bdy) = ij
601	nbrdta(icount, igrd, ib_bdy) = ir
602	ENDDO
603	ENDDO
604	!
605	! ------------ V points -------------
606	igrd=3
607	icount=0
608	DO ir = 1, nn_rimwidth(ib_bdy)
609	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
610	DO ij = jpjwdt(iseg), jpjwft(iseg)
611	icount = icount + 1
612	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
613	nbjdta(icount, igrd, ib_bdy) = ij
614	nbrdta(icount, igrd, ib_bdy) = ir
615	ENDDO
616	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
617	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
618	ENDDO
619	ENDDO
620	!
621	! North
622	!-----
623	DO iseg = 1, nbdysegn
624	ib_bdy = npckgn(iseg)
625	!
626	! ------------ T points -------------
627	igrd=1
628	icount=0
629	DO ir = 1, nn_rimwidth(ib_bdy)
630	DO ii = jpindt(iseg), jpinft(iseg)
631	icount = icount + 1
632	nbidta(icount, igrd, ib_bdy) = ii
633	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
634	nbrdta(icount, igrd, ib_bdy) = ir
635	ENDDO
636	ENDDO
637	!
638	! ------------ U points -------------
639	igrd=2
640	icount=0
641	DO ir = 1, nn_rimwidth(ib_bdy)
642	! DO ii = jpindt(iseg), jpinft(iseg) - 1
643	DO ii = jpindt(iseg), jpinft(iseg)
644	icount = icount + 1
645	nbidta(icount, igrd, ib_bdy) = ii
646	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
647	nbrdta(icount, igrd, ib_bdy) = ir
648	ENDDO
649	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
650	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
651	ENDDO
652	!
653	! ------------ V points -------------
654	igrd=3
655	icount=0
656	DO ir = 1, nn_rimwidth(ib_bdy)
657	DO ii = jpindt(iseg), jpinft(iseg)
658	icount = icount + 1
659	nbidta(icount, igrd, ib_bdy) = ii
660	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
661	nbrdta(icount, igrd, ib_bdy) = ir
662	ENDDO
663	ENDDO
664	ENDDO
665	!
666	! South
667	!-----
668	DO iseg = 1, nbdysegs
669	ib_bdy = npckgs(iseg)
670	!
671	! ------------ T points -------------
672	igrd=1
673	icount=0
674	DO ir = 1, nn_rimwidth(ib_bdy)
675	DO ii = jpisdt(iseg), jpisft(iseg)
676	icount = icount + 1
677	nbidta(icount, igrd, ib_bdy) = ii
678	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
679	nbrdta(icount, igrd, ib_bdy) = ir
680	ENDDO
681	ENDDO
682	!
683	! ------------ U points -------------
684	igrd=2
685	icount=0
686	DO ir = 1, nn_rimwidth(ib_bdy)
687	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
688	DO ii = jpisdt(iseg), jpisft(iseg)
689	icount = icount + 1
690	nbidta(icount, igrd, ib_bdy) = ii
691	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
692	nbrdta(icount, igrd, ib_bdy) = ir
693	ENDDO
694	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
695	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
696	ENDDO
697	!
698	! ------------ V points -------------
699	igrd=3
700	icount=0
701	DO ir = 1, nn_rimwidth(ib_bdy)
702	DO ii = jpisdt(iseg), jpisft(iseg)
703	icount = icount + 1
704	nbidta(icount, igrd, ib_bdy) = ii
705	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
706	nbrdta(icount, igrd, ib_bdy) = ir
707	ENDDO
708	ENDDO
709	ENDDO
710
711	! Deal with duplicated points
712	!-----------------------------
713	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
714	! if their distance to the bdy is greater than the other
715	! If their distance are the same, just keep only one to avoid updating a point twice
716	DO igrd = 1, jpbgrd
717	DO ib_bdy1 = 1, nb_bdy
718	DO ib_bdy2 = 1, nb_bdy
719	IF (ib_bdy1/=ib_bdy2) THEN
720	DO ib1 = 1, nblendta(igrd,ib_bdy1)
721	DO ib2 = 1, nblendta(igrd,ib_bdy2)
722	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
723	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
724	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
725	! & nbidta(ib1, igrd, ib_bdy1), &
726	! & nbjdta(ib2, igrd, ib_bdy2)
727	! keep only points with the lowest distance to boundary:
728	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
729	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
730	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
731	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
732	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
733	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
734	! Arbitrary choice if distances are the same:
735	ELSE
736	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
737	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
738	ENDIF
739	END IF
740	END DO
741	END DO
742	ENDIF
743	END DO
744	END DO
745	END DO
746
747	! Work out dimensions of boundary data on each processor
748	! ------------------------------------------------------
749
750	! Rather assume that boundary data indices are given on global domain
751	! TO BE DISCUSSED ?
752	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
753	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
754	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
755	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
756	iw = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
757	ie = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
758	is = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
759	in = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
760
761	ALLOCATE( nbondi_bdy(nb_bdy))
762	ALLOCATE( nbondj_bdy(nb_bdy))
763	nbondi_bdy(:)=2
764	nbondj_bdy(:)=2
765	ALLOCATE( nbondi_bdy_b(nb_bdy))
766	ALLOCATE( nbondj_bdy_b(nb_bdy))
767	nbondi_bdy_b(:)=2
768	nbondj_bdy_b(:)=2
769
770	! Work out dimensions of boundary data on each neighbour process
771	IF(nbondi .eq. 0) THEN
772	iw_b(1) = jpizoom + nimppt(nowe+1)
773	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
774	is_b(1) = jpjzoom + njmppt(nowe+1)
775	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
776
777	iw_b(2) = jpizoom + nimppt(noea+1)
778	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
779	is_b(2) = jpjzoom + njmppt(noea+1)
780	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
781	ELSEIF(nbondi .eq. 1) THEN
782	iw_b(1) = jpizoom + nimppt(nowe+1)
783	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
784	is_b(1) = jpjzoom + njmppt(nowe+1)
785	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
786	ELSEIF(nbondi .eq. -1) THEN
787	iw_b(2) = jpizoom + nimppt(noea+1)
788	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
789	is_b(2) = jpjzoom + njmppt(noea+1)
790	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
791	ENDIF
792
793	IF(nbondj .eq. 0) THEN
794	iw_b(3) = jpizoom + nimppt(noso+1)
795	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
796	is_b(3) = jpjzoom + njmppt(noso+1)
797	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
798
799	iw_b(4) = jpizoom + nimppt(nono+1)
800	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
801	is_b(4) = jpjzoom + njmppt(nono+1)
802	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
803	ELSEIF(nbondj .eq. 1) THEN
804	iw_b(3) = jpizoom + nimppt(noso+1)
805	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
806	is_b(3) = jpjzoom + njmppt(noso+1)
807	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
808	ELSEIF(nbondj .eq. -1) THEN
809	iw_b(4) = jpizoom + nimppt(nono+1)
810	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
811	is_b(4) = jpjzoom + njmppt(nono+1)
812	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
813	ENDIF
814
815	DO ib_bdy = 1, nb_bdy
816	DO igrd = 1, jpbgrd
817	icount = 0
818	icountr = 0
819	idx_bdy(ib_bdy)%nblen(igrd) = 0
820	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
821	DO ib = 1, nblendta(igrd,ib_bdy)
822	! check that data is in correct order in file
823	ibm1 = MAX(1,ib-1)
824	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
825	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
826	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined in order of distance from edge nbr.', &
827	'A utility for re-ordering boundary coordinates and data files exists in the TOOLS/OBC directory')
828	ENDIF
829	ENDIF
830	! check if point is in local domain
831	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
832	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in ) THEN
833	!
834	icount = icount + 1
835	!
836	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
837	ENDIF
838	ENDDO
839	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
840	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
841	ENDDO ! igrd
842
843	! Allocate index arrays for this boundary set
844	!--------------------------------------------
845	ilen1 = MAXVAL(idx_bdy(ib_bdy)%nblen(:))
846	ALLOCATE( idx_bdy(ib_bdy)%nbi(ilen1,jpbgrd) )
847	ALLOCATE( idx_bdy(ib_bdy)%nbj(ilen1,jpbgrd) )
848	ALLOCATE( idx_bdy(ib_bdy)%nbr(ilen1,jpbgrd) )
849	ALLOCATE( idx_bdy(ib_bdy)%nbd(ilen1,jpbgrd) )
850	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
851	ALLOCATE( idx_bdy(ib_bdy)%nbmap(ilen1,jpbgrd) )
852	ALLOCATE( idx_bdy(ib_bdy)%nbw(ilen1,jpbgrd) )
853	ALLOCATE( idx_bdy(ib_bdy)%flagu(ilen1,jpbgrd) )
854	ALLOCATE( idx_bdy(ib_bdy)%flagv(ilen1,jpbgrd) )
855
856	! Dispatch mapping indices and discrete distances on each processor
857	! -----------------------------------------------------------------
858
859	com_east = 0
860	com_west = 0
861	com_south = 0
862	com_north = 0
863
864	com_east_b = 0
865	com_west_b = 0
866	com_south_b = 0
867	com_north_b = 0
868	DO igrd = 1, jpbgrd
869	icount = 0
870	! Loop on rimwidth to ensure outermost points come first in the local arrays.
871	DO ir=1, nn_rimwidth(ib_bdy)
872	DO ib = 1, nblendta(igrd,ib_bdy)
873	! check if point is in local domain and equals ir
874	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
875	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in .AND. &
876	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
877	!
878	icount = icount + 1
879
880	! Rather assume that boundary data indices are given on global domain
881	! TO BE DISCUSSED ?
882	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
883	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
884	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
885	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
886	! check if point has to be sent
887	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
888	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
889	if((com_east .ne. 1) .and. (ii .eq. (nlci-1)) .and. (nbondi .le. 0)) then
890	com_east = 1
891	elseif((com_west .ne. 1) .and. (ii .eq. 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
892	com_west = 1
893	endif
894	if((com_south .ne. 1) .and. (ij .eq. 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
895	com_south = 1
896	elseif((com_north .ne. 1) .and. (ij .eq. (nlcj-1)) .and. (nbondj .le. 0)) then
897	com_north = 1
898	endif
899	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
900	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
901	ENDIF
902	! check if point has to be received from a neighbour
903	IF(nbondi .eq. 0) THEN
904	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
905	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
906	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
907	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
908	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
909	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
910	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
911	com_south = 1
912	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
913	com_north = 1
914	endif
915	com_west_b = 1
916	endif
917	ENDIF
918	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
919	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
920	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
921	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
922	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
923	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
924	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
925	com_south = 1
926	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
927	com_north = 1
928	endif
929	com_east_b = 1
930	endif
931	ENDIF
932	ELSEIF(nbondi .eq. 1) THEN
933	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
934	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
935	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
936	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
937	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
938	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
939	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
940	com_south = 1
941	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
942	com_north = 1
943	endif
944	com_west_b = 1
945	endif
946	ENDIF
947	ELSEIF(nbondi .eq. -1) THEN
948	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
949	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
950	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
951	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
952	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
953	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
954	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
955	com_south = 1
956	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
957	com_north = 1
958	endif
959	com_east_b = 1
960	endif
961	ENDIF
962	ENDIF
963	IF(nbondj .eq. 0) THEN
964	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
965	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
966	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
967	com_north_b = 1
968	ENDIF
969	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
970	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
971	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
972	com_south_b = 1
973	ENDIF
974	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
975	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
976	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
977	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
978	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
979	com_south_b = 1
980	endif
981	ENDIF
982	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
983	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
984	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
985	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
986	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
987	com_north_b = 1
988	endif
989	ENDIF
990	ELSEIF(nbondj .eq. 1) THEN
991	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
992	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
993	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
994	com_south_b = 1
995	ENDIF
996	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
997	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
998	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
999	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1000	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1001	com_south_b = 1
1002	endif
1003	ENDIF
1004	ELSEIF(nbondj .eq. -1) THEN
1005	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1006	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1007	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1008	com_north_b = 1
1009	ENDIF
1010	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1011	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1012	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1013	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1014	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1015	com_north_b = 1
1016	endif
1017	ENDIF
1018	ENDIF
1019	ENDDO
1020	ENDDO
1021	ENDDO
1022
1023	! definition of the i- and j- direction local boundaries arrays
1024	! used for sending the boudaries
1025	IF((com_east .eq. 1) .and. (com_west .eq. 1)) THEN
1026	nbondi_bdy(ib_bdy) = 0
1027	ELSEIF ((com_east .eq. 1) .and. (com_west .eq. 0)) THEN
1028	nbondi_bdy(ib_bdy) = -1
1029	ELSEIF ((com_east .eq. 0) .and. (com_west .eq. 1)) THEN
1030	nbondi_bdy(ib_bdy) = 1
1031	ENDIF
1032
1033	IF((com_north .eq. 1) .and. (com_south .eq. 1)) THEN
1034	nbondj_bdy(ib_bdy) = 0
1035	ELSEIF ((com_north .eq. 1) .and. (com_south .eq. 0)) THEN
1036	nbondj_bdy(ib_bdy) = -1
1037	ELSEIF ((com_north .eq. 0) .and. (com_south .eq. 1)) THEN
1038	nbondj_bdy(ib_bdy) = 1
1039	ENDIF
1040
1041	! definition of the i- and j- direction local boundaries arrays
1042	! used for receiving the boudaries
1043	IF((com_east_b .eq. 1) .and. (com_west_b .eq. 1)) THEN
1044	nbondi_bdy_b(ib_bdy) = 0
1045	ELSEIF ((com_east_b .eq. 1) .and. (com_west_b .eq. 0)) THEN
1046	nbondi_bdy_b(ib_bdy) = -1
1047	ELSEIF ((com_east_b .eq. 0) .and. (com_west_b .eq. 1)) THEN
1048	nbondi_bdy_b(ib_bdy) = 1
1049	ENDIF
1050
1051	IF((com_north_b .eq. 1) .and. (com_south_b .eq. 1)) THEN
1052	nbondj_bdy_b(ib_bdy) = 0
1053	ELSEIF ((com_north_b .eq. 1) .and. (com_south_b .eq. 0)) THEN
1054	nbondj_bdy_b(ib_bdy) = -1
1055	ELSEIF ((com_north_b .eq. 0) .and. (com_south_b .eq. 1)) THEN
1056	nbondj_bdy_b(ib_bdy) = 1
1057	ENDIF
1058
1059	! Compute rim weights for FRS scheme
1060	! ----------------------------------
1061	DO igrd = 1, jpbgrd
1062	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1063	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1064	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) ! tanh formulation
1065	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))**2. ! quadratic
1066	! idx_bdy(ib_bdy)%nbw(ib,igrd) = FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)) ! linear
1067	END DO
1068	END DO
1069
1070	! Compute damping coefficients
1071	! ----------------------------
1072	DO igrd = 1, jpbgrd
1073	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1074	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1075	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1076	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1077	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1078	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1079	END DO
1080	END DO
1081
1082	ENDDO
1083
1084	! ------------------------------------------------------
1085	! Initialise masks and find normal/tangential directions
1086	! ------------------------------------------------------
1087
1088	! Read global 2D mask at T-points: bdytmask
1089	! -----------------------------------------
1090	! bdytmask = 1 on the computational domain AND on open boundaries
1091	! = 0 elsewhere
1092
1093	IF( ln_mask_file ) THEN
1094	CALL iom_open( cn_mask_file, inum )
1095	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1096	CALL iom_close( inum )
1097
1098	! Derive mask on U and V grid from mask on T grid
1099	bdyumask(:,:) = 0.e0
1100	bdyvmask(:,:) = 0.e0
1101	DO ij=1, jpjm1
1102	DO ii=1, jpim1
1103	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1104	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1105	END DO
1106	END DO
1107	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1108
1109
1110	! Mask corrections
1111	! ----------------
1112	DO ik = 1, jpkm1
1113	DO ij = 1, jpj
1114	DO ii = 1, jpi
1115	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
1116	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
1117	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
1118	bmask(ii,ij) = bmask(ii,ij) * bdytmask(ii,ij)
1119	END DO
1120	END DO
1121	END DO
1122
1123	DO ik = 1, jpkm1
1124	DO ij = 2, jpjm1
1125	DO ii = 2, jpim1
1126	fmask(ii,ij,ik) = fmask(ii,ij,ik) * bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
1127	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
1128	END DO
1129	END DO
1130	END DO
1131
1132	tmask_i (:,:) = tmask(:,:,1) * tmask_i(:,:)
1133
1134	ENDIF ! ln_mask_file=.TRUE.
1135
1136	bdytmask(:,:) = tmask(:,:,1)
1137	IF( .not. ln_mask_file ) THEN
1138	! If .not. ln_mask_file then we need to derive mask on U and V grid
1139	! from mask on T grid here.
1140	bdyumask(:,:) = 0.e0
1141	bdyvmask(:,:) = 0.e0
1142	DO ij=1, jpjm1
1143	DO ii=1, jpim1
1144	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1145	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1146	END DO
1147	END DO
1148	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1149	ENDIF
1150
1151	! bdy masks and bmask are now set to zero on boundary points:
1152	igrd = 1 ! In the free surface case, bmask is at T-points
1153	DO ib_bdy = 1, nb_bdy
1154	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1155	bmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1156	ENDDO
1157	ENDDO
1158	!
1159	igrd = 1
1160	DO ib_bdy = 1, nb_bdy
1161	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1162	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1163	ENDDO
1164	ENDDO
1165	!
1166	igrd = 2
1167	DO ib_bdy = 1, nb_bdy
1168	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1169	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1170	ENDDO
1171	ENDDO
1172	!
1173	igrd = 3
1174	DO ib_bdy = 1, nb_bdy
1175	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1176	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1177	ENDDO
1178	ENDDO
1179
1180	! bdyfmask required for flagu, flagv calculations below even though F-points
1181	! not defined for BDY grid.
1182	DO ij = 2, jpjm1
1183	DO ii = 2, jpim1
1184	bdyfmask(ii,ij) = bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
1185	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
1186	END DO
1187	END DO
1188
1189	! Lateral boundary conditions
1190	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1191	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1192
1193	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1194
1195	idx_bdy(ib_bdy)%flagu(:,:) = 0.e0
1196	idx_bdy(ib_bdy)%flagv(:,:) = 0.e0
1197	icount = 0
1198
1199	! Calculate relationship of U direction to the local orientation of the boundary
1200	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1201	! flagu = 0 : u is tangential
1202	! flagu = 1 : u is normal to the boundary and is direction is inward
1203
1204	DO igrd = 1,jpbgrd
1205	SELECT CASE( igrd )
1206	CASE( 1 )
1207	cgrid = 'T'
1208	pmask => umask(:,:,1)
1209	i_offset = 0
1210	CASE( 2 )
1211	cgrid = 'U'
1212	pmask => bdytmask
1213	i_offset = 1
1214	CASE( 3 )
1215	cgrid = 'V'
1216	pmask => fmask(:,:,1)
1217	i_offset = 0
1218	END SELECT
1219	icount = 0
1220	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1221	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1222	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1223	zefl = pmask(nbi+i_offset-1,nbj)
1224	zwfl = pmask(nbi+i_offset,nbj)
1225	IF( zefl + zwfl == 2 * i_offset ) THEN
1226	icount = icount + 1
1227	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1228	ELSE
1229	idx_bdy(ib_bdy)%flagu(ib,igrd)=-zefl+zwfl
1230	ENDIF
1231	END DO
1232	IF( icount /= 0 ) THEN
1233	IF(lwp) WRITE(numout,*)
1234	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid,' grid points,', &
1235	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1236	IF(lwp) WRITE(numout,*) ' ========== '
1237	IF(lwp) WRITE(numout,*)
1238	nstop = nstop + 1
1239	ENDIF
1240	END DO
1241
1242	! Calculate relationship of V direction to the local orientation of the boundary
1243	! flagv = -1 : u component is normal to the dynamical boundary but its direction is outward
1244	! flagv = 0 : u is tangential
1245	! flagv = 1 : u is normal to the boundary and is direction is inward
1246
1247	DO igrd = 1,jpbgrd
1248	SELECT CASE( igrd )
1249	CASE( 1 )
1250	cgrid = 'T'
1251	pmask => vmask(:,:,1)
1252	j_offset = 0
1253	CASE( 2 )
1254	cgrid = 'U'
1255	pmask => fmask(:,:,1)
1256	j_offset = 0
1257	CASE( 3 )
1258	cgrid = 'V'
1259	pmask => bdytmask
1260	j_offset = 1
1261	END SELECT
1262	icount = 0
1263	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1264	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1265	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1266	znfl = pmask(nbi,nbj+j_offset-1 )
1267	zsfl = pmask(nbi,nbj+j_offset)
1268	IF( znfl + zsfl == 2 * j_offset ) THEN
1269	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1270	icount = icount + 1
1271	ELSE
1272	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1273	END IF
1274	END DO
1275	IF( icount /= 0 ) THEN
1276	IF(lwp) WRITE(numout,*)
1277	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid,' grid points,', &
1278	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1279	IF(lwp) WRITE(numout,*) ' ========== '
1280	IF(lwp) WRITE(numout,*)
1281	nstop = nstop + 1
1282	ENDIF
1283	END DO
1284
1285	END DO
1286
1287	! Compute total lateral surface for volume correction:
1288	! ----------------------------------------------------
1289	! JC: this must be done at each time step with key_vvl
1290	bdysurftot = 0.e0
1291	IF( ln_vol ) THEN
1292	igrd = 2 ! Lateral surface at U-points
1293	DO ib_bdy = 1, nb_bdy
1294	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1295	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1296	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1297	flagu => idx_bdy(ib_bdy)%flagu(ib,igrd)
1298	bdysurftot = bdysurftot + hu (nbi , nbj) &
1299	& * e2u (nbi , nbj) * ABS( flagu ) &
1300	& * tmask_i(nbi , nbj) &
1301	& * tmask_i(nbi+1, nbj)
1302	ENDDO
1303	ENDDO
1304
1305	igrd=3 ! Add lateral surface at V-points
1306	DO ib_bdy = 1, nb_bdy
1307	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1308	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1309	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1310	flagv => idx_bdy(ib_bdy)%flagv(ib,igrd)
1311	bdysurftot = bdysurftot + hv (nbi, nbj ) &
1312	& * e1v (nbi, nbj ) * ABS( flagv ) &
1313	& * tmask_i(nbi, nbj ) &
1314	& * tmask_i(nbi, nbj+1)
1315	ENDDO
1316	ENDDO
1317	!
1318	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
1319	END IF
1320	!
1321	! Tidy up
1322	!--------
1323	IF (nb_bdy>0) THEN
1324	DEALLOCATE(nbidta, nbjdta, nbrdta)
1325	ENDIF
1326
1327	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1328
1329	END SUBROUTINE bdy_init
1330
1331	SUBROUTINE bdy_ctl_seg
1332	!!----------------------------------------------------------------------
1333	!! * ROUTINE bdy_ctl_seg *
1334	!!
1335	!! ** Purpose : Check straight open boundary segments location
1336	!!
1337	!! ** Method : - Look for open boundary corners
1338	!! - Check that segments start or end on land
1339	!!----------------------------------------------------------------------
1340	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1341	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1342	REAL(wp), DIMENSION(2) :: ztestmask
1343	!!----------------------------------------------------------------------
1344	!
1345	IF (lwp) WRITE(numout,*) ' '
1346	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1347	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1348	!
1349	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1350	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1351	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1352	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1353	! 1. Check bounds
1354	!----------------
1355	DO ib = 1, nbdysegn
1356	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1357	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1358	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1359	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1360	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1361	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1362	END DO
1363	!
1364	DO ib = 1, nbdysegs
1365	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1366	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1367	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1368	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1369	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1370	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1371	END DO
1372	!
1373	DO ib = 1, nbdysege
1374	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1375	IF ((jpieob(ib).ge.jpiglo-1).or.&
1376	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1377	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1378	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1379	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1380	END DO
1381	!
1382	DO ib = 1, nbdysegw
1383	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1384	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1385	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1386	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1387	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1388	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1389	ENDDO
1390	!
1391	!
1392	! 2. Look for segment crossings
1393	!------------------------------
1394	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1395	!
1396	itest = 0 ! corner number
1397	!
1398	! flag to detect if start or end of open boundary belongs to a corner
1399	! if not (=0), it must be on land.
1400	! if a corner is detected, save bdy package number for further tests
1401	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1402	! South/West crossings
1403	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1404	DO ib1 = 1, nbdysegw
1405	DO ib2 = 1, nbdysegs
1406	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1407	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1408	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1409	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1410	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1411	! We have a possible South-West corner
1412	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1413	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1414	icornw(ib1,1) = npckgs(ib2)
1415	icorns(ib2,1) = npckgw(ib1)
1416	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1417	IF(lwp) WRITE(numout,*)
1418	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1419	& jpisft(ib2), jpjwft(ib1)
1420	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1421	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1422	& ' and South segment: ',npckgs(ib2)
1423	IF(lwp) WRITE(numout,*)
1424	nstop = nstop + 1
1425	ELSE
1426	IF(lwp) WRITE(numout,*)
1427	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
1428	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1429	& ' and South segment: ',npckgs(ib2)
1430	IF(lwp) WRITE(numout,*)
1431	nstop = nstop+1
1432	END IF
1433	END IF
1434	END DO
1435	END DO
1436	END IF
1437	!
1438	! South/East crossings
1439	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1440	DO ib1 = 1, nbdysege
1441	DO ib2 = 1, nbdysegs
1442	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1443	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1444	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1445	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1446	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1447	! We have a possible South-East corner
1448	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1449	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1450	icorne(ib1,1) = npckgs(ib2)
1451	icorns(ib2,2) = npckge(ib1)
1452	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1453	IF(lwp) WRITE(numout,*)
1454	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1455	& jpisdt(ib2), jpjeft(ib1)
1456	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1457	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1458	& ' and South segment: ',npckgs(ib2)
1459	IF(lwp) WRITE(numout,*)
1460	nstop = nstop + 1
1461	ELSE
1462	IF(lwp) WRITE(numout,*)
1463	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
1464	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1465	& ' and South segment: ',npckgs(ib2)
1466	IF(lwp) WRITE(numout,*)
1467	nstop = nstop + 1
1468	END IF
1469	END IF
1470	END DO
1471	END DO
1472	END IF
1473	!
1474	! North/West crossings
1475	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1476	DO ib1 = 1, nbdysegw
1477	DO ib2 = 1, nbdysegn
1478	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1479	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1480	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1481	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1482	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1483	! We have a possible North-West corner
1484	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1485	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1486	icornw(ib1,2) = npckgn(ib2)
1487	icornn(ib2,1) = npckgw(ib1)
1488	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1489	IF(lwp) WRITE(numout,*)
1490	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1491	& jpinft(ib2), jpjwdt(ib1)
1492	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1493	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1494	& ' and North segment: ',npckgn(ib2)
1495	IF(lwp) WRITE(numout,*)
1496	nstop = nstop + 1
1497	ELSE
1498	IF(lwp) WRITE(numout,*)
1499	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1500	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1501	& ' and North segment: ',npckgn(ib2)
1502	IF(lwp) WRITE(numout,*)
1503	nstop = nstop + 1
1504	END IF
1505	END IF
1506	END DO
1507	END DO
1508	END IF
1509	!
1510	! North/East crossings
1511	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1512	DO ib1 = 1, nbdysege
1513	DO ib2 = 1, nbdysegn
1514	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1515	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1516	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1517	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1518	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1519	! We have a possible North-East corner
1520	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1521	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1522	icorne(ib1,2) = npckgn(ib2)
1523	icornn(ib2,2) = npckge(ib1)
1524	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1525	IF(lwp) WRITE(numout,*)
1526	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1527	& jpindt(ib2), jpjedt(ib1)
1528	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1529	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1530	& ' and North segment: ',npckgn(ib2)
1531	IF(lwp) WRITE(numout,*)
1532	nstop = nstop + 1
1533	ELSE
1534	IF(lwp) WRITE(numout,*)
1535	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1536	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1537	& ' and North segment: ',npckgn(ib2)
1538	IF(lwp) WRITE(numout,*)
1539	nstop = nstop + 1
1540	END IF
1541	END IF
1542	END DO
1543	END DO
1544	END IF
1545	!
1546	! 3. Check if segment extremities are on land
1547	!--------------------------------------------
1548	!
1549	! West segments
1550	DO ib = 1, nbdysegw
1551	! get mask at boundary extremities:
1552	ztestmask(1:2)=0.
1553	DO ji = 1, jpi
1554	DO jj = 1, jpj
1555	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1556	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1557	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1558	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1559	END DO
1560	END DO
1561	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1562
1563	IF (ztestmask(1)==1) THEN
1564	IF (icornw(ib,1)==0) THEN
1565	IF(lwp) WRITE(numout,*)
1566	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1567	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1568	IF(lwp) WRITE(numout,*)
1569	nstop = nstop + 1
1570	ELSE
1571	! This is a corner
1572	WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1573	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1574	itest=itest+1
1575	ENDIF
1576	ENDIF
1577	IF (ztestmask(2)==1) THEN
1578	IF (icornw(ib,2)==0) THEN
1579	IF(lwp) WRITE(numout,*)
1580	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1581	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1582	IF(lwp) WRITE(numout,*)
1583	nstop = nstop + 1
1584	ELSE
1585	! This is a corner
1586	WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1587	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1588	itest=itest+1
1589	ENDIF
1590	ENDIF
1591	END DO
1592	!
1593	! East segments
1594	DO ib = 1, nbdysege
1595	! get mask at boundary extremities:
1596	ztestmask(1:2)=0.
1597	DO ji = 1, jpi
1598	DO jj = 1, jpj
1599	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1600	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1601	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1602	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1603	END DO
1604	END DO
1605	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1606
1607	IF (ztestmask(1)==1) THEN
1608	IF (icorne(ib,1)==0) THEN
1609	IF(lwp) WRITE(numout,*)
1610	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1611	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1612	IF(lwp) WRITE(numout,*)
1613	nstop = nstop + 1
1614	ELSE
1615	! This is a corner
1616	WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1617	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1618	itest=itest+1
1619	ENDIF
1620	ENDIF
1621	IF (ztestmask(2)==1) THEN
1622	IF (icorne(ib,2)==0) THEN
1623	IF(lwp) WRITE(numout,*)
1624	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1625	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1626	IF(lwp) WRITE(numout,*)
1627	nstop = nstop + 1
1628	ELSE
1629	! This is a corner
1630	WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1631	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1632	itest=itest+1
1633	ENDIF
1634	ENDIF
1635	END DO
1636	!
1637	! South segments
1638	DO ib = 1, nbdysegs
1639	! get mask at boundary extremities:
1640	ztestmask(1:2)=0.
1641	DO ji = 1, jpi
1642	DO jj = 1, jpj
1643	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1644	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1645	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1646	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1647	END DO
1648	END DO
1649	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1650
1651	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1652	IF(lwp) WRITE(numout,*)
1653	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1654	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1655	IF(lwp) WRITE(numout,*)
1656	nstop = nstop + 1
1657	ENDIF
1658	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1659	IF(lwp) WRITE(numout,*)
1660	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1661	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1662	IF(lwp) WRITE(numout,*)
1663	nstop = nstop + 1
1664	ENDIF
1665	END DO
1666	!
1667	! North segments
1668	DO ib = 1, nbdysegn
1669	! get mask at boundary extremities:
1670	ztestmask(1:2)=0.
1671	DO ji = 1, jpi
1672	DO jj = 1, jpj
1673	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1674	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1675	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1676	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1677	END DO
1678	END DO
1679	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1680
1681	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1682	IF(lwp) WRITE(numout,*)
1683	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1684	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1685	IF(lwp) WRITE(numout,*)
1686	nstop = nstop + 1
1687	ENDIF
1688	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1689	IF(lwp) WRITE(numout,*)
1690	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1691	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1692	IF(lwp) WRITE(numout,*)
1693	nstop = nstop + 1
1694	ENDIF
1695	END DO
1696	!
1697	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1698	!
1699	! Other tests TBD:
1700	! segments completly on land
1701	! optimized open boundary array length according to landmask
1702	! Nudging layers that overlap with interior domain
1703	!
1704	END SUBROUTINE bdy_ctl_seg
1705
1706	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1707	!!----------------------------------------------------------------------
1708	!! * ROUTINE bdy_ctl_corn *
1709	!!
1710	!! ** Purpose : Check numerical schemes consistency between
1711	!! segments having a common corner
1712	!!
1713	!! ** Method :
1714	!!----------------------------------------------------------------------
1715	INTEGER, INTENT(in) :: ib1, ib2
1716	INTEGER :: itest
1717	!!----------------------------------------------------------------------
1718	itest = 0
1719
1720	IF (cn_dyn2d(ib1)/=cn_dyn2d(ib2)) itest = itest + 1
1721	IF (cn_dyn3d(ib1)/=cn_dyn3d(ib2)) itest = itest + 1
1722	IF (cn_tra(ib1)/=cn_tra(ib2)) itest = itest + 1
1723	!
1724	IF (nn_dyn2d_dta(ib1)/=nn_dyn2d_dta(ib2)) itest = itest + 1
1725	IF (nn_dyn3d_dta(ib1)/=nn_dyn3d_dta(ib2)) itest = itest + 1
1726	IF (nn_tra_dta(ib1)/=nn_tra_dta(ib2)) itest = itest + 1
1727	!
1728	IF (nn_rimwidth(ib1)/=nn_rimwidth(ib2)) itest = itest + 1
1729	!
1730	IF ( itest>0 ) THEN
1731	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1732	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1733	IF(lwp) WRITE(numout,*)
1734	nstop = nstop + 1
1735	ENDIF
1736	!
1737	END SUBROUTINE bdy_ctl_corn
1738
1739	#else
1740	!!---------------------------------------------------------------------------------
1741	!! Dummy module NO open boundaries
1742	!!---------------------------------------------------------------------------------
1743	CONTAINS
1744	SUBROUTINE bdy_init ! Dummy routine
1745	END SUBROUTINE bdy_init
1746	#endif
1747
1748	!!=================================================================================
1749	END MODULE bdyini

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