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bdyini.F90 in branches/2013/dev_r3858_NOC_ZTC/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

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source: branches/2013/dev_r3858_NOC_ZTC/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 4267

Last change on this file since 4267 was 4254, checked in by acc, 10 years ago
Branch 2013/dev_r3858_NOC_ZTC, #863. Merge in final changes from the dev_r3867_MERCATOR1_DYN branch; mainly AGRIF and BDY compatibility
Property svn:keywords set to `Id`
File size: 80.9 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 wrk_nemo ! Memory Allocation
24	USE timing ! Timing
25	USE oce ! ocean dynamics and tracers variables
26	USE dom_oce ! ocean space and time domain
27	USE bdy_oce ! unstructured open boundary conditions
28	USE in_out_manager ! I/O units
29	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
30	USE lib_mpp ! for mpp_sum
31	USE iom ! I/O
32	USE sbctide, ONLY: lk_tide ! Tidal forcing or not
33	USE phycst, ONLY: rday
34
35	IMPLICIT NONE
36	PRIVATE
37
38	PUBLIC bdy_init ! routine called in nemo_init
39
40	INTEGER, PARAMETER :: jp_nseg = 100
41	INTEGER, PARAMETER :: nrimmax = 20 ! maximum rimwidth in structured
42	! open boundary data files
43	! Straight open boundary segment parameters:
44	INTEGER :: nbdysege, nbdysegw, nbdysegn, nbdysegs
45	INTEGER, DIMENSION(jp_nseg) :: jpieob, jpjedt, jpjeft, npckge
46	INTEGER, DIMENSION(jp_nseg) :: jpiwob, jpjwdt, jpjwft, npckgw
47	INTEGER, DIMENSION(jp_nseg) :: jpjnob, jpindt, jpinft, npckgn
48	INTEGER, DIMENSION(jp_nseg) :: jpjsob, jpisdt, jpisft, npckgs
49	!!----------------------------------------------------------------------
50	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
51	!! $Id$
52	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
53	!!----------------------------------------------------------------------
54	CONTAINS
55
56	SUBROUTINE bdy_init
57	!!----------------------------------------------------------------------
58	!! * ROUTINE bdy_init *
59	!!
60	!! ** Purpose : Initialization of the dynamics and tracer fields with
61	!! unstructured open boundaries.
62	!!
63	!! ** Method : Read initialization arrays (mask, indices) to identify
64	!! an unstructured open boundary
65	!!
66	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
67	!!----------------------------------------------------------------------
68	! namelist variables
69	!-------------------
70	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile
71	CHARACTER(LEN=1) :: ctypebdy
72	INTEGER :: nbdyind, nbdybeg, nbdyend
73
74	! local variables
75	!-------------------
76	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
77	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
78	INTEGER :: iw, ie, is, in, inum, id_dummy ! - -
79	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
80	INTEGER :: jpbdtau, jpbdtas ! - -
81	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
82	INTEGER :: i_offset, j_offset ! - -
83	INTEGER, POINTER :: nbi, nbj, nbr ! short cuts
84	REAL(wp), POINTER :: flagu, flagv ! - -
85	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
86	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
87	INTEGER, DIMENSION (2) :: kdimsz
88	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
89	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
90	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
91	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
92	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
93	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
94	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
95	REAL(wp), POINTER, DIMENSION(:,:) :: zfmask ! temporary fmask array excluding coastal boundary condition (shlat)
96
97	!!
98	NAMELIST/nambdy/ nb_bdy, ln_coords_file, cn_coords_file, &
99	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
100	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
101	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
102	#if defined key_lim2
103	& cn_ice_lim2, nn_ice_lim2_dta, &
104	#endif
105	& ln_vol, nn_volctl, nn_rimwidth
106	!!
107	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
108
109	!!----------------------------------------------------------------------
110
111	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
112
113	IF( bdy_oce_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'bdy_init : unable to allocate oce arrays' )
114
115	IF(lwp) WRITE(numout,*)
116	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
117	IF(lwp) WRITE(numout,*) '~~~~~~~~'
118	!
119
120	IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
121	& ' and general open boundary condition are not compatible' )
122
123	cgrid= (/'t','u','v'/)
124
125	! -----------------------------------------
126	! Initialise and read namelist parameters
127	! -----------------------------------------
128
129	nb_bdy = 0
130	ln_coords_file(:) = .false.
131	cn_coords_file(:) = ''
132	ln_mask_file = .false.
133	cn_mask_file(:) = ''
134	cn_dyn2d(:) = ''
135	nn_dyn2d_dta(:) = -1 ! uninitialised flag
136	cn_dyn3d(:) = ''
137	nn_dyn3d_dta(:) = -1 ! uninitialised flag
138	cn_tra(:) = ''
139	nn_tra_dta(:) = -1 ! uninitialised flag
140	ln_tra_dmp(:) = .false.
141	ln_dyn3d_dmp(:) = .false.
142	rn_time_dmp(:) = 1.
143	#if defined key_lim2
144	cn_ice_lim2(:) = ''
145	nn_ice_lim2_dta(:)= -1 ! uninitialised flag
146	#endif
147	ln_vol = .false.
148	nn_volctl = -1 ! uninitialised flag
149	nn_rimwidth(:) = -1 ! uninitialised flag
150
151	REWIND( numnam )
152	READ ( numnam, nambdy )
153
154	! -----------------------------------------
155	! Check and write out namelist parameters
156	! -----------------------------------------
157	! ! control prints
158	IF(lwp) WRITE(numout,*) ' nambdy'
159
160	IF( nb_bdy .eq. 0 ) THEN
161	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
162	ELSE
163	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ',nb_bdy
164	ENDIF
165
166	DO ib_bdy = 1,nb_bdy
167	IF(lwp) WRITE(numout,*) ' '
168	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
169
170	IF( ln_coords_file(ib_bdy) ) THEN
171	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
172	ELSE
173	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
174	ENDIF
175	IF(lwp) WRITE(numout,*)
176
177	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
178	SELECT CASE( cn_dyn2d(ib_bdy) )
179	CASE('none')
180	IF(lwp) WRITE(numout,*) ' no open boundary condition'
181	dta_bdy(ib_bdy)%ll_ssh = .false.
182	dta_bdy(ib_bdy)%ll_u2d = .false.
183	dta_bdy(ib_bdy)%ll_v2d = .false.
184	CASE('frs')
185	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
186	dta_bdy(ib_bdy)%ll_ssh = .false.
187	dta_bdy(ib_bdy)%ll_u2d = .true.
188	dta_bdy(ib_bdy)%ll_v2d = .true.
189	CASE('flather')
190	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
191	dta_bdy(ib_bdy)%ll_ssh = .true.
192	dta_bdy(ib_bdy)%ll_u2d = .true.
193	dta_bdy(ib_bdy)%ll_v2d = .true.
194	CASE('orlanski')
195	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
196	dta_bdy(ib_bdy)%ll_ssh = .false.
197	dta_bdy(ib_bdy)%ll_u2d = .true.
198	dta_bdy(ib_bdy)%ll_v2d = .true.
199	CASE('orlanski_npo')
200	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
201	dta_bdy(ib_bdy)%ll_ssh = .false.
202	dta_bdy(ib_bdy)%ll_u2d = .true.
203	dta_bdy(ib_bdy)%ll_v2d = .true.
204	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
205	END SELECT
206	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
207	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
208	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
209	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
210	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
211	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
212	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
213	END SELECT
214	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
215	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
216	ENDIF
217	ENDIF
218	IF(lwp) WRITE(numout,*)
219
220	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
221	SELECT CASE( cn_dyn3d(ib_bdy) )
222	CASE('none')
223	IF(lwp) WRITE(numout,*) ' no open boundary condition'
224	dta_bdy(ib_bdy)%ll_u3d = .false.
225	dta_bdy(ib_bdy)%ll_v3d = .false.
226	CASE('frs')
227	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
228	dta_bdy(ib_bdy)%ll_u3d = .true.
229	dta_bdy(ib_bdy)%ll_v3d = .true.
230	CASE('specified')
231	IF(lwp) WRITE(numout,*) ' Specified value'
232	dta_bdy(ib_bdy)%ll_u3d = .true.
233	dta_bdy(ib_bdy)%ll_v3d = .true.
234	CASE('zero')
235	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
236	dta_bdy(ib_bdy)%ll_u3d = .false.
237	dta_bdy(ib_bdy)%ll_v3d = .false.
238	CASE('orlanski')
239	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
240	dta_bdy(ib_bdy)%ll_u3d = .true.
241	dta_bdy(ib_bdy)%ll_v3d = .true.
242	CASE('orlanski_npo')
243	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
244	dta_bdy(ib_bdy)%ll_u3d = .true.
245	dta_bdy(ib_bdy)%ll_v3d = .true.
246	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
247	END SELECT
248	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
249	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
250	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
251	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
252	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
253	END SELECT
254	ENDIF
255
256	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
257	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
258	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
259	ln_dyn3d_dmp(ib_bdy)=.false.
260	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
261	CALL ctl_stop( 'Use FRS OR relaxation' )
262	ELSE
263	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
264	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
265	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
266	dta_bdy(ib_bdy)%ll_u3d = .true.
267	dta_bdy(ib_bdy)%ll_v3d = .true.
268	ENDIF
269	ELSE
270	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
271	ENDIF
272	IF(lwp) WRITE(numout,*)
273
274	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
275	SELECT CASE( cn_tra(ib_bdy) )
276	CASE('none')
277	IF(lwp) WRITE(numout,*) ' no open boundary condition'
278	dta_bdy(ib_bdy)%ll_tem = .false.
279	dta_bdy(ib_bdy)%ll_sal = .false.
280	CASE('frs')
281	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
282	dta_bdy(ib_bdy)%ll_tem = .true.
283	dta_bdy(ib_bdy)%ll_sal = .true.
284	CASE('specified')
285	IF(lwp) WRITE(numout,*) ' Specified value'
286	dta_bdy(ib_bdy)%ll_tem = .true.
287	dta_bdy(ib_bdy)%ll_sal = .true.
288	CASE('neumann')
289	IF(lwp) WRITE(numout,*) ' Neumann conditions'
290	dta_bdy(ib_bdy)%ll_tem = .false.
291	dta_bdy(ib_bdy)%ll_sal = .false.
292	CASE('runoff')
293	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
294	dta_bdy(ib_bdy)%ll_tem = .false.
295	dta_bdy(ib_bdy)%ll_sal = .false.
296	CASE('orlanski')
297	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
298	dta_bdy(ib_bdy)%ll_tem = .true.
299	dta_bdy(ib_bdy)%ll_sal = .true.
300	CASE('orlanski_npo')
301	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
302	dta_bdy(ib_bdy)%ll_tem = .true.
303	dta_bdy(ib_bdy)%ll_sal = .true.
304	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
305	END SELECT
306	IF( cn_tra(ib_bdy) /= 'none' ) THEN
307	SELECT CASE( nn_tra_dta(ib_bdy) ) !
308	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
309	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
310	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
311	END SELECT
312	ENDIF
313
314	IF ( ln_tra_dmp(ib_bdy) ) THEN
315	IF ( cn_tra(ib_bdy) == 'none' ) THEN
316	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
317	ln_tra_dmp(ib_bdy)=.false.
318	ELSEIF ( cn_tra(ib_bdy) == 'frs' ) THEN
319	CALL ctl_stop( 'Use FRS OR relaxation' )
320	ELSE
321	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
322	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
323	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
324	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
325	dta_bdy(ib_bdy)%ll_tem = .true.
326	dta_bdy(ib_bdy)%ll_sal = .true.
327	ENDIF
328	ELSE
329	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
330	ENDIF
331	IF(lwp) WRITE(numout,*)
332
333	#if defined key_lim2
334	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
335	SELECT CASE( cn_ice_lim2(ib_bdy) )
336	CASE('none')
337	IF(lwp) WRITE(numout,*) ' no open boundary condition'
338	dta_bdy(ib_bdy)%ll_frld = .false.
339	dta_bdy(ib_bdy)%ll_hicif = .false.
340	dta_bdy(ib_bdy)%ll_hsnif = .false.
341	CASE('frs')
342	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
343	dta_bdy(ib_bdy)%ll_frld = .true.
344	dta_bdy(ib_bdy)%ll_hicif = .true.
345	dta_bdy(ib_bdy)%ll_hsnif = .true.
346	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim2' )
347	END SELECT
348	IF( cn_ice_lim2(ib_bdy) /= 'none' ) THEN
349	SELECT CASE( nn_ice_lim2_dta(ib_bdy) ) !
350	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
351	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
352	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim2_dta must be 0 or 1' )
353	END SELECT
354	ENDIF
355	IF(lwp) WRITE(numout,*)
356	#endif
357
358	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
359	IF(lwp) WRITE(numout,*)
360
361	ENDDO
362
363	IF (nb_bdy .gt. 0) THEN
364	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
365	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
366	IF(lwp) WRITE(numout,*)
367	SELECT CASE ( nn_volctl )
368	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
369	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
370	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
371	END SELECT
372	IF(lwp) WRITE(numout,*)
373	ELSE
374	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
375	IF(lwp) WRITE(numout,*)
376	ENDIF
377	ENDIF
378
379	! -------------------------------------------------
380	! Initialise indices arrays for open boundaries
381	! -------------------------------------------------
382
383	! Work out global dimensions of boundary data
384	! ---------------------------------------------
385	REWIND( numnam )
386
387	nblendta(:,:) = 0
388	nbdysege = 0
389	nbdysegw = 0
390	nbdysegn = 0
391	nbdysegs = 0
392	icount = 0 ! count user defined segments
393	! Dimensions below are used to allocate arrays to read external data
394	jpbdtas = 1 ! Maximum size of boundary data (structured case)
395	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
396
397	DO ib_bdy = 1, nb_bdy
398
399	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
400
401	icount = icount + 1
402	! No REWIND here because may need to read more than one nambdy_index namelist.
403	READ ( numnam, nambdy_index )
404
405	SELECT CASE ( TRIM(ctypebdy) )
406	CASE( 'N' )
407	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
408	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
409	nbdybeg = 2
410	nbdyend = jpiglo - 1
411	ENDIF
412	nbdysegn = nbdysegn + 1
413	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
414	jpjnob(nbdysegn) = nbdyind
415	jpindt(nbdysegn) = nbdybeg
416	jpinft(nbdysegn) = nbdyend
417	!
418	CASE( 'S' )
419	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
420	nbdyind = 2 ! set boundary to whole side of model domain.
421	nbdybeg = 2
422	nbdyend = jpiglo - 1
423	ENDIF
424	nbdysegs = nbdysegs + 1
425	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
426	jpjsob(nbdysegs) = nbdyind
427	jpisdt(nbdysegs) = nbdybeg
428	jpisft(nbdysegs) = nbdyend
429	!
430	CASE( 'E' )
431	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
432	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
433	nbdybeg = 2
434	nbdyend = jpjglo - 1
435	ENDIF
436	nbdysege = nbdysege + 1
437	npckge(nbdysege) = ib_bdy ! Save bdy package number
438	jpieob(nbdysege) = nbdyind
439	jpjedt(nbdysege) = nbdybeg
440	jpjeft(nbdysege) = nbdyend
441	!
442	CASE( 'W' )
443	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
444	nbdyind = 2 ! set boundary to whole side of model domain.
445	nbdybeg = 2
446	nbdyend = jpjglo - 1
447	ENDIF
448	nbdysegw = nbdysegw + 1
449	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
450	jpiwob(nbdysegw) = nbdyind
451	jpjwdt(nbdysegw) = nbdybeg
452	jpjwft(nbdysegw) = nbdyend
453	!
454	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
455	END SELECT
456
457	! For simplicity we assume that in case of straight bdy, arrays have the same length
458	! (even if it is true that last tangential velocity points
459	! are useless). This simplifies a little bit boundary data format (and agrees with format
460	! used so far in obc package)
461
462	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
463	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
464	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
465	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
466
467	ELSE ! Read size of arrays in boundary coordinates file.
468	CALL iom_open( cn_coords_file(ib_bdy), inum )
469	DO igrd = 1, jpbgrd
470	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
471	nblendta(igrd,ib_bdy) = kdimsz(1)
472	jpbdtau = MAX(jpbdtau, kdimsz(1))
473	ENDDO
474	CALL iom_close( inum )
475
476	ENDIF
477
478	ENDDO ! ib_bdy
479
480	IF (nb_bdy>0) THEN
481	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
482
483	! Allocate arrays
484	!---------------
485	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
486	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
487
488	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
489	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
490	!
491	ENDIF
492
493	! Now look for crossings in user (namelist) defined open boundary segments:
494	!--------------------------------------------------------------------------
495	IF ( icount>0 ) CALL bdy_ctl_seg
496
497	! Calculate global boundary index arrays or read in from file
498	!------------------------------------------------------------
499	! 1. Read global index arrays from boundary coordinates file.
500	DO ib_bdy = 1, nb_bdy
501
502	IF( ln_coords_file(ib_bdy) ) THEN
503
504	CALL iom_open( cn_coords_file(ib_bdy), inum )
505	DO igrd = 1, jpbgrd
506	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
507	DO ii = 1,nblendta(igrd,ib_bdy)
508	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
509	END DO
510	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
511	DO ii = 1,nblendta(igrd,ib_bdy)
512	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
513	END DO
514	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
515	DO ii = 1,nblendta(igrd,ib_bdy)
516	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
517	END DO
518
519	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
520	IF(lwp) WRITE(numout,*)
521	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
522	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
523	IF (ibr_max < nn_rimwidth(ib_bdy)) &
524	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
525	END DO
526	CALL iom_close( inum )
527
528	ENDIF
529
530	ENDDO
531
532	! 2. Now fill indices corresponding to straight open boundary arrays:
533	! East
534	!-----
535	DO iseg = 1, nbdysege
536	ib_bdy = npckge(iseg)
537	!
538	! ------------ T points -------------
539	igrd=1
540	icount=0
541	DO ir = 1, nn_rimwidth(ib_bdy)
542	DO ij = jpjedt(iseg), jpjeft(iseg)
543	icount = icount + 1
544	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
545	nbjdta(icount, igrd, ib_bdy) = ij
546	nbrdta(icount, igrd, ib_bdy) = ir
547	ENDDO
548	ENDDO
549	!
550	! ------------ U points -------------
551	igrd=2
552	icount=0
553	DO ir = 1, nn_rimwidth(ib_bdy)
554	DO ij = jpjedt(iseg), jpjeft(iseg)
555	icount = icount + 1
556	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
557	nbjdta(icount, igrd, ib_bdy) = ij
558	nbrdta(icount, igrd, ib_bdy) = ir
559	ENDDO
560	ENDDO
561	!
562	! ------------ V points -------------
563	igrd=3
564	icount=0
565	DO ir = 1, nn_rimwidth(ib_bdy)
566	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
567	DO ij = jpjedt(iseg), jpjeft(iseg)
568	icount = icount + 1
569	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
570	nbjdta(icount, igrd, ib_bdy) = ij
571	nbrdta(icount, igrd, ib_bdy) = ir
572	ENDDO
573	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
574	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
575	ENDDO
576	ENDDO
577	!
578	! West
579	!-----
580	DO iseg = 1, nbdysegw
581	ib_bdy = npckgw(iseg)
582	!
583	! ------------ T points -------------
584	igrd=1
585	icount=0
586	DO ir = 1, nn_rimwidth(ib_bdy)
587	DO ij = jpjwdt(iseg), jpjwft(iseg)
588	icount = icount + 1
589	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
590	nbjdta(icount, igrd, ib_bdy) = ij
591	nbrdta(icount, igrd, ib_bdy) = ir
592	ENDDO
593	ENDDO
594	!
595	! ------------ U points -------------
596	igrd=2
597	icount=0
598	DO ir = 1, nn_rimwidth(ib_bdy)
599	DO ij = jpjwdt(iseg), jpjwft(iseg)
600	icount = icount + 1
601	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
602	nbjdta(icount, igrd, ib_bdy) = ij
603	nbrdta(icount, igrd, ib_bdy) = ir
604	ENDDO
605	ENDDO
606	!
607	! ------------ V points -------------
608	igrd=3
609	icount=0
610	DO ir = 1, nn_rimwidth(ib_bdy)
611	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
612	DO ij = jpjwdt(iseg), jpjwft(iseg)
613	icount = icount + 1
614	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
615	nbjdta(icount, igrd, ib_bdy) = ij
616	nbrdta(icount, igrd, ib_bdy) = ir
617	ENDDO
618	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
619	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
620	ENDDO
621	ENDDO
622	!
623	! North
624	!-----
625	DO iseg = 1, nbdysegn
626	ib_bdy = npckgn(iseg)
627	!
628	! ------------ T points -------------
629	igrd=1
630	icount=0
631	DO ir = 1, nn_rimwidth(ib_bdy)
632	DO ii = jpindt(iseg), jpinft(iseg)
633	icount = icount + 1
634	nbidta(icount, igrd, ib_bdy) = ii
635	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
636	nbrdta(icount, igrd, ib_bdy) = ir
637	ENDDO
638	ENDDO
639	!
640	! ------------ U points -------------
641	igrd=2
642	icount=0
643	DO ir = 1, nn_rimwidth(ib_bdy)
644	! DO ii = jpindt(iseg), jpinft(iseg) - 1
645	DO ii = jpindt(iseg), jpinft(iseg)
646	icount = icount + 1
647	nbidta(icount, igrd, ib_bdy) = ii
648	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
649	nbrdta(icount, igrd, ib_bdy) = ir
650	ENDDO
651	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
652	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
653	ENDDO
654	!
655	! ------------ V points -------------
656	igrd=3
657	icount=0
658	DO ir = 1, nn_rimwidth(ib_bdy)
659	DO ii = jpindt(iseg), jpinft(iseg)
660	icount = icount + 1
661	nbidta(icount, igrd, ib_bdy) = ii
662	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
663	nbrdta(icount, igrd, ib_bdy) = ir
664	ENDDO
665	ENDDO
666	ENDDO
667	!
668	! South
669	!-----
670	DO iseg = 1, nbdysegs
671	ib_bdy = npckgs(iseg)
672	!
673	! ------------ T points -------------
674	igrd=1
675	icount=0
676	DO ir = 1, nn_rimwidth(ib_bdy)
677	DO ii = jpisdt(iseg), jpisft(iseg)
678	icount = icount + 1
679	nbidta(icount, igrd, ib_bdy) = ii
680	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
681	nbrdta(icount, igrd, ib_bdy) = ir
682	ENDDO
683	ENDDO
684	!
685	! ------------ U points -------------
686	igrd=2
687	icount=0
688	DO ir = 1, nn_rimwidth(ib_bdy)
689	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
690	DO ii = jpisdt(iseg), jpisft(iseg)
691	icount = icount + 1
692	nbidta(icount, igrd, ib_bdy) = ii
693	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
694	nbrdta(icount, igrd, ib_bdy) = ir
695	ENDDO
696	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
697	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
698	ENDDO
699	!
700	! ------------ V points -------------
701	igrd=3
702	icount=0
703	DO ir = 1, nn_rimwidth(ib_bdy)
704	DO ii = jpisdt(iseg), jpisft(iseg)
705	icount = icount + 1
706	nbidta(icount, igrd, ib_bdy) = ii
707	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
708	nbrdta(icount, igrd, ib_bdy) = ir
709	ENDDO
710	ENDDO
711	ENDDO
712
713	! Deal with duplicated points
714	!-----------------------------
715	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
716	! if their distance to the bdy is greater than the other
717	! If their distance are the same, just keep only one to avoid updating a point twice
718	DO igrd = 1, jpbgrd
719	DO ib_bdy1 = 1, nb_bdy
720	DO ib_bdy2 = 1, nb_bdy
721	IF (ib_bdy1/=ib_bdy2) THEN
722	DO ib1 = 1, nblendta(igrd,ib_bdy1)
723	DO ib2 = 1, nblendta(igrd,ib_bdy2)
724	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
725	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
726	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
727	! & nbidta(ib1, igrd, ib_bdy1), &
728	! & nbjdta(ib2, igrd, ib_bdy2)
729	! keep only points with the lowest distance to boundary:
730	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
731	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
732	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
733	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
734	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
735	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
736	! Arbitrary choice if distances are the same:
737	ELSE
738	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
739	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
740	ENDIF
741	END IF
742	END DO
743	END DO
744	ENDIF
745	END DO
746	END DO
747	END DO
748
749	! Work out dimensions of boundary data on each processor
750	! ------------------------------------------------------
751
752	! Rather assume that boundary data indices are given on global domain
753	! TO BE DISCUSSED ?
754	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
755	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
756	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
757	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
758	iw = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
759	ie = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
760	is = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
761	in = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
762
763	ALLOCATE( nbondi_bdy(nb_bdy))
764	ALLOCATE( nbondj_bdy(nb_bdy))
765	nbondi_bdy(:)=2
766	nbondj_bdy(:)=2
767	ALLOCATE( nbondi_bdy_b(nb_bdy))
768	ALLOCATE( nbondj_bdy_b(nb_bdy))
769	nbondi_bdy_b(:)=2
770	nbondj_bdy_b(:)=2
771
772	! Work out dimensions of boundary data on each neighbour process
773	IF(nbondi .eq. 0) THEN
774	iw_b(1) = jpizoom + nimppt(nowe+1)
775	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
776	is_b(1) = jpjzoom + njmppt(nowe+1)
777	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
778
779	iw_b(2) = jpizoom + nimppt(noea+1)
780	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
781	is_b(2) = jpjzoom + njmppt(noea+1)
782	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
783	ELSEIF(nbondi .eq. 1) THEN
784	iw_b(1) = jpizoom + nimppt(nowe+1)
785	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
786	is_b(1) = jpjzoom + njmppt(nowe+1)
787	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
788	ELSEIF(nbondi .eq. -1) THEN
789	iw_b(2) = jpizoom + nimppt(noea+1)
790	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
791	is_b(2) = jpjzoom + njmppt(noea+1)
792	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
793	ENDIF
794
795	IF(nbondj .eq. 0) THEN
796	iw_b(3) = jpizoom + nimppt(noso+1)
797	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
798	is_b(3) = jpjzoom + njmppt(noso+1)
799	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
800
801	iw_b(4) = jpizoom + nimppt(nono+1)
802	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
803	is_b(4) = jpjzoom + njmppt(nono+1)
804	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
805	ELSEIF(nbondj .eq. 1) THEN
806	iw_b(3) = jpizoom + nimppt(noso+1)
807	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
808	is_b(3) = jpjzoom + njmppt(noso+1)
809	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
810	ELSEIF(nbondj .eq. -1) THEN
811	iw_b(4) = jpizoom + nimppt(nono+1)
812	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
813	is_b(4) = jpjzoom + njmppt(nono+1)
814	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
815	ENDIF
816
817	DO ib_bdy = 1, nb_bdy
818	DO igrd = 1, jpbgrd
819	icount = 0
820	icountr = 0
821	idx_bdy(ib_bdy)%nblen(igrd) = 0
822	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
823	DO ib = 1, nblendta(igrd,ib_bdy)
824	! check that data is in correct order in file
825	ibm1 = MAX(1,ib-1)
826	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
827	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
828	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined in order of distance from edge nbr.', &
829	'A utility for re-ordering boundary coordinates and data files exists in the TOOLS/OBC directory')
830	ENDIF
831	ENDIF
832	! check if point is in local domain
833	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
834	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in ) THEN
835	!
836	icount = icount + 1
837	!
838	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
839	ENDIF
840	ENDDO
841	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
842	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
843	ENDDO ! igrd
844
845	! Allocate index arrays for this boundary set
846	!--------------------------------------------
847	ilen1 = MAXVAL(idx_bdy(ib_bdy)%nblen(:))
848	ALLOCATE( idx_bdy(ib_bdy)%nbi(ilen1,jpbgrd) )
849	ALLOCATE( idx_bdy(ib_bdy)%nbj(ilen1,jpbgrd) )
850	ALLOCATE( idx_bdy(ib_bdy)%nbr(ilen1,jpbgrd) )
851	ALLOCATE( idx_bdy(ib_bdy)%nbd(ilen1,jpbgrd) )
852	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
853	ALLOCATE( idx_bdy(ib_bdy)%nbmap(ilen1,jpbgrd) )
854	ALLOCATE( idx_bdy(ib_bdy)%nbw(ilen1,jpbgrd) )
855	ALLOCATE( idx_bdy(ib_bdy)%flagu(ilen1,jpbgrd) )
856	ALLOCATE( idx_bdy(ib_bdy)%flagv(ilen1,jpbgrd) )
857
858	! Dispatch mapping indices and discrete distances on each processor
859	! -----------------------------------------------------------------
860
861	com_east = 0
862	com_west = 0
863	com_south = 0
864	com_north = 0
865
866	com_east_b = 0
867	com_west_b = 0
868	com_south_b = 0
869	com_north_b = 0
870	DO igrd = 1, jpbgrd
871	icount = 0
872	! Loop on rimwidth to ensure outermost points come first in the local arrays.
873	DO ir=1, nn_rimwidth(ib_bdy)
874	DO ib = 1, nblendta(igrd,ib_bdy)
875	! check if point is in local domain and equals ir
876	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
877	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in .AND. &
878	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
879	!
880	icount = icount + 1
881
882	! Rather assume that boundary data indices are given on global domain
883	! TO BE DISCUSSED ?
884	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
885	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
886	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
887	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
888	! check if point has to be sent
889	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
890	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
891	if((com_east .ne. 1) .and. (ii .eq. (nlci-1)) .and. (nbondi .le. 0)) then
892	com_east = 1
893	elseif((com_west .ne. 1) .and. (ii .eq. 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
894	com_west = 1
895	endif
896	if((com_south .ne. 1) .and. (ij .eq. 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
897	com_south = 1
898	elseif((com_north .ne. 1) .and. (ij .eq. (nlcj-1)) .and. (nbondj .le. 0)) then
899	com_north = 1
900	endif
901	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
902	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
903	ENDIF
904	! check if point has to be received from a neighbour
905	IF(nbondi .eq. 0) THEN
906	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
907	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
908	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
909	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
910	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
911	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
912	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
913	com_south = 1
914	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
915	com_north = 1
916	endif
917	com_west_b = 1
918	endif
919	ENDIF
920	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
921	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
922	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
923	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
924	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
925	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
926	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
927	com_south = 1
928	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
929	com_north = 1
930	endif
931	com_east_b = 1
932	endif
933	ENDIF
934	ELSEIF(nbondi .eq. 1) THEN
935	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
936	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
937	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
938	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
939	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
940	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
941	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
942	com_south = 1
943	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
944	com_north = 1
945	endif
946	com_west_b = 1
947	endif
948	ENDIF
949	ELSEIF(nbondi .eq. -1) THEN
950	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
951	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
952	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
953	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
954	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
955	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
956	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
957	com_south = 1
958	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
959	com_north = 1
960	endif
961	com_east_b = 1
962	endif
963	ENDIF
964	ENDIF
965	IF(nbondj .eq. 0) THEN
966	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
967	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
968	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
969	com_north_b = 1
970	ENDIF
971	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
972	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
973	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
974	com_south_b = 1
975	ENDIF
976	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
977	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
978	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
979	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
980	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
981	com_south_b = 1
982	endif
983	ENDIF
984	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
985	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
986	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
987	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
988	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
989	com_north_b = 1
990	endif
991	ENDIF
992	ELSEIF(nbondj .eq. 1) THEN
993	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
994	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
995	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
996	com_south_b = 1
997	ENDIF
998	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
999	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1000	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1001	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1002	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1003	com_south_b = 1
1004	endif
1005	ENDIF
1006	ELSEIF(nbondj .eq. -1) THEN
1007	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1008	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1009	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1010	com_north_b = 1
1011	ENDIF
1012	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1013	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1014	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1015	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1016	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1017	com_north_b = 1
1018	endif
1019	ENDIF
1020	ENDIF
1021	ENDDO
1022	ENDDO
1023	ENDDO
1024
1025	! definition of the i- and j- direction local boundaries arrays
1026	! used for sending the boudaries
1027	IF((com_east .eq. 1) .and. (com_west .eq. 1)) THEN
1028	nbondi_bdy(ib_bdy) = 0
1029	ELSEIF ((com_east .eq. 1) .and. (com_west .eq. 0)) THEN
1030	nbondi_bdy(ib_bdy) = -1
1031	ELSEIF ((com_east .eq. 0) .and. (com_west .eq. 1)) THEN
1032	nbondi_bdy(ib_bdy) = 1
1033	ENDIF
1034
1035	IF((com_north .eq. 1) .and. (com_south .eq. 1)) THEN
1036	nbondj_bdy(ib_bdy) = 0
1037	ELSEIF ((com_north .eq. 1) .and. (com_south .eq. 0)) THEN
1038	nbondj_bdy(ib_bdy) = -1
1039	ELSEIF ((com_north .eq. 0) .and. (com_south .eq. 1)) THEN
1040	nbondj_bdy(ib_bdy) = 1
1041	ENDIF
1042
1043	! definition of the i- and j- direction local boundaries arrays
1044	! used for receiving the boudaries
1045	IF((com_east_b .eq. 1) .and. (com_west_b .eq. 1)) THEN
1046	nbondi_bdy_b(ib_bdy) = 0
1047	ELSEIF ((com_east_b .eq. 1) .and. (com_west_b .eq. 0)) THEN
1048	nbondi_bdy_b(ib_bdy) = -1
1049	ELSEIF ((com_east_b .eq. 0) .and. (com_west_b .eq. 1)) THEN
1050	nbondi_bdy_b(ib_bdy) = 1
1051	ENDIF
1052
1053	IF((com_north_b .eq. 1) .and. (com_south_b .eq. 1)) THEN
1054	nbondj_bdy_b(ib_bdy) = 0
1055	ELSEIF ((com_north_b .eq. 1) .and. (com_south_b .eq. 0)) THEN
1056	nbondj_bdy_b(ib_bdy) = -1
1057	ELSEIF ((com_north_b .eq. 0) .and. (com_south_b .eq. 1)) THEN
1058	nbondj_bdy_b(ib_bdy) = 1
1059	ENDIF
1060
1061	! Compute rim weights for FRS scheme
1062	! ----------------------------------
1063	DO igrd = 1, jpbgrd
1064	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1065	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1066	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) ! tanh formulation
1067	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))**2. ! quadratic
1068	! idx_bdy(ib_bdy)%nbw(ib,igrd) = FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)) ! linear
1069	END DO
1070	END DO
1071
1072	! Compute damping coefficients
1073	! ----------------------------
1074	DO igrd = 1, jpbgrd
1075	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1076	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1077	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1078	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1079	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1080	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1081	END DO
1082	END DO
1083
1084	ENDDO
1085
1086	! ------------------------------------------------------
1087	! Initialise masks and find normal/tangential directions
1088	! ------------------------------------------------------
1089
1090	! Read global 2D mask at T-points: bdytmask
1091	! -----------------------------------------
1092	! bdytmask = 1 on the computational domain AND on open boundaries
1093	! = 0 elsewhere
1094
1095	IF( ln_mask_file ) THEN
1096	CALL iom_open( cn_mask_file, inum )
1097	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1098	CALL iom_close( inum )
1099
1100	! Derive mask on U and V grid from mask on T grid
1101	bdyumask(:,:) = 0.e0
1102	bdyvmask(:,:) = 0.e0
1103	DO ij=1, jpjm1
1104	DO ii=1, jpim1
1105	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1106	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1107	END DO
1108	END DO
1109	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1110
1111
1112	! Mask corrections
1113	! ----------------
1114	DO ik = 1, jpkm1
1115	DO ij = 1, jpj
1116	DO ii = 1, jpi
1117	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
1118	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
1119	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
1120	bmask(ii,ij) = bmask(ii,ij) * bdytmask(ii,ij)
1121	END DO
1122	END DO
1123	END DO
1124
1125	DO ik = 1, jpkm1
1126	DO ij = 2, jpjm1
1127	DO ii = 2, jpim1
1128	fmask(ii,ij,ik) = fmask(ii,ij,ik) * bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
1129	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
1130	END DO
1131	END DO
1132	END DO
1133
1134	tmask_i (:,:) = tmask(:,:,1) * tmask_i(:,:)
1135
1136	ENDIF ! ln_mask_file=.TRUE.
1137
1138	bdytmask(:,:) = tmask(:,:,1)
1139	IF( .not. ln_mask_file ) THEN
1140	! If .not. ln_mask_file then we need to derive mask on U and V grid
1141	! from mask on T grid here.
1142	bdyumask(:,:) = 0.e0
1143	bdyvmask(:,:) = 0.e0
1144	DO ij=1, jpjm1
1145	DO ii=1, jpim1
1146	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1147	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1148	END DO
1149	END DO
1150	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1151	ENDIF
1152
1153	! bdy masks and bmask are now set to zero on boundary points:
1154	igrd = 1 ! In the free surface case, bmask is at T-points
1155	DO ib_bdy = 1, nb_bdy
1156	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1157	bmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1158	ENDDO
1159	ENDDO
1160	!
1161	igrd = 1
1162	DO ib_bdy = 1, nb_bdy
1163	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1164	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1165	ENDDO
1166	ENDDO
1167	!
1168	igrd = 2
1169	DO ib_bdy = 1, nb_bdy
1170	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1171	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1172	ENDDO
1173	ENDDO
1174	!
1175	igrd = 3
1176	DO ib_bdy = 1, nb_bdy
1177	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1178	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1179	ENDDO
1180	ENDDO
1181
1182	! For the flagu/flagv calculation below we require a version of fmask without
1183	! the land boundary condition (shlat) included:
1184	CALL wrk_alloc(jpi,jpj,zfmask)
1185	DO ij = 2, jpjm1
1186	DO ii = 2, jpim1
1187	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1188	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1189	END DO
1190	END DO
1191
1192	! Lateral boundary conditions
1193	CALL lbc_lnk( zfmask , 'F', 1. )
1194	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1195	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1196
1197	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1198
1199	idx_bdy(ib_bdy)%flagu(:,:) = 0.e0
1200	idx_bdy(ib_bdy)%flagv(:,:) = 0.e0
1201	icount = 0
1202
1203	! Calculate relationship of U direction to the local orientation of the boundary
1204	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1205	! flagu = 0 : u is tangential
1206	! flagu = 1 : u is normal to the boundary and is direction is inward
1207
1208	DO igrd = 1,jpbgrd
1209	SELECT CASE( igrd )
1210	CASE( 1 )
1211	pmask => umask(:,:,1)
1212	i_offset = 0
1213	CASE( 2 )
1214	pmask => bdytmask
1215	i_offset = 1
1216	CASE( 3 )
1217	pmask => zfmask(:,:)
1218	i_offset = 0
1219	END SELECT
1220	icount = 0
1221	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1222	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1223	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1224	zefl = pmask(nbi+i_offset-1,nbj)
1225	zwfl = pmask(nbi+i_offset,nbj)
1226	! This error check only works if you are using the bdyXmask arrays
1227	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1228	icount = icount + 1
1229	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1230	ELSE
1231	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1232	ENDIF
1233	END DO
1234	IF( icount /= 0 ) THEN
1235	IF(lwp) WRITE(numout,*)
1236	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1237	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1238	IF(lwp) WRITE(numout,*) ' ========== '
1239	IF(lwp) WRITE(numout,*)
1240	nstop = nstop + 1
1241	ENDIF
1242	END DO
1243
1244	! Calculate relationship of V direction to the local orientation of the boundary
1245	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1246	! flagv = 0 : v is tangential
1247	! flagv = 1 : v is normal to the boundary and is direction is inward
1248
1249	DO igrd = 1,jpbgrd
1250	SELECT CASE( igrd )
1251	CASE( 1 )
1252	pmask => vmask(:,:,1)
1253	j_offset = 0
1254	CASE( 2 )
1255	pmask => zfmask(:,:)
1256	j_offset = 0
1257	CASE( 3 )
1258	pmask => bdytmask
1259	j_offset = 1
1260	END SELECT
1261	icount = 0
1262	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1263	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1264	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1265	znfl = pmask(nbi,nbj+j_offset-1 )
1266	zsfl = pmask(nbi,nbj+j_offset)
1267	! This error check only works if you are using the bdyXmask arrays
1268	IF( j_offset == 1 .and. znfl + zsfl == 2 ) 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(igrd),' 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	CALL wrk_dealloc(jpi,jpj,zfmask)
1328
1329	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1330
1331	END SUBROUTINE bdy_init
1332
1333	SUBROUTINE bdy_ctl_seg
1334	!!----------------------------------------------------------------------
1335	!! * ROUTINE bdy_ctl_seg *
1336	!!
1337	!! ** Purpose : Check straight open boundary segments location
1338	!!
1339	!! ** Method : - Look for open boundary corners
1340	!! - Check that segments start or end on land
1341	!!----------------------------------------------------------------------
1342	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1343	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1344	REAL(wp), DIMENSION(2) :: ztestmask
1345	!!----------------------------------------------------------------------
1346	!
1347	IF (lwp) WRITE(numout,*) ' '
1348	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1349	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1350	!
1351	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1352	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1353	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1354	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1355	! 1. Check bounds
1356	!----------------
1357	DO ib = 1, nbdysegn
1358	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1359	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1360	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1361	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1362	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1363	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1364	END DO
1365	!
1366	DO ib = 1, nbdysegs
1367	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1368	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1369	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1370	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1371	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1372	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1373	END DO
1374	!
1375	DO ib = 1, nbdysege
1376	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1377	IF ((jpieob(ib).ge.jpiglo-1).or.&
1378	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1379	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1380	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1381	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1382	END DO
1383	!
1384	DO ib = 1, nbdysegw
1385	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1386	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1387	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1388	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1389	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1390	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1391	ENDDO
1392	!
1393	!
1394	! 2. Look for segment crossings
1395	!------------------------------
1396	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1397	!
1398	itest = 0 ! corner number
1399	!
1400	! flag to detect if start or end of open boundary belongs to a corner
1401	! if not (=0), it must be on land.
1402	! if a corner is detected, save bdy package number for further tests
1403	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1404	! South/West crossings
1405	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1406	DO ib1 = 1, nbdysegw
1407	DO ib2 = 1, nbdysegs
1408	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1409	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1410	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1411	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1412	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1413	! We have a possible South-West corner
1414	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1415	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1416	icornw(ib1,1) = npckgs(ib2)
1417	icorns(ib2,1) = npckgw(ib1)
1418	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1419	IF(lwp) WRITE(numout,*)
1420	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1421	& jpisft(ib2), jpjwft(ib1)
1422	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1423	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1424	& ' and South segment: ',npckgs(ib2)
1425	IF(lwp) WRITE(numout,*)
1426	nstop = nstop + 1
1427	ELSE
1428	IF(lwp) WRITE(numout,*)
1429	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
1430	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1431	& ' and South segment: ',npckgs(ib2)
1432	IF(lwp) WRITE(numout,*)
1433	nstop = nstop+1
1434	END IF
1435	END IF
1436	END DO
1437	END DO
1438	END IF
1439	!
1440	! South/East crossings
1441	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1442	DO ib1 = 1, nbdysege
1443	DO ib2 = 1, nbdysegs
1444	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1445	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1446	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1447	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1448	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1449	! We have a possible South-East corner
1450	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1451	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1452	icorne(ib1,1) = npckgs(ib2)
1453	icorns(ib2,2) = npckge(ib1)
1454	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1455	IF(lwp) WRITE(numout,*)
1456	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1457	& jpisdt(ib2), jpjeft(ib1)
1458	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1459	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1460	& ' and South segment: ',npckgs(ib2)
1461	IF(lwp) WRITE(numout,*)
1462	nstop = nstop + 1
1463	ELSE
1464	IF(lwp) WRITE(numout,*)
1465	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
1466	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1467	& ' and South segment: ',npckgs(ib2)
1468	IF(lwp) WRITE(numout,*)
1469	nstop = nstop + 1
1470	END IF
1471	END IF
1472	END DO
1473	END DO
1474	END IF
1475	!
1476	! North/West crossings
1477	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1478	DO ib1 = 1, nbdysegw
1479	DO ib2 = 1, nbdysegn
1480	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1481	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1482	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1483	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1484	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1485	! We have a possible North-West corner
1486	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1487	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1488	icornw(ib1,2) = npckgn(ib2)
1489	icornn(ib2,1) = npckgw(ib1)
1490	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1491	IF(lwp) WRITE(numout,*)
1492	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1493	& jpinft(ib2), jpjwdt(ib1)
1494	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1495	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1496	& ' and North segment: ',npckgn(ib2)
1497	IF(lwp) WRITE(numout,*)
1498	nstop = nstop + 1
1499	ELSE
1500	IF(lwp) WRITE(numout,*)
1501	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1502	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1503	& ' and North segment: ',npckgn(ib2)
1504	IF(lwp) WRITE(numout,*)
1505	nstop = nstop + 1
1506	END IF
1507	END IF
1508	END DO
1509	END DO
1510	END IF
1511	!
1512	! North/East crossings
1513	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1514	DO ib1 = 1, nbdysege
1515	DO ib2 = 1, nbdysegn
1516	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1517	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1518	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1519	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1520	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1521	! We have a possible North-East corner
1522	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1523	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1524	icorne(ib1,2) = npckgn(ib2)
1525	icornn(ib2,2) = npckge(ib1)
1526	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1527	IF(lwp) WRITE(numout,*)
1528	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1529	& jpindt(ib2), jpjedt(ib1)
1530	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1531	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1532	& ' and North segment: ',npckgn(ib2)
1533	IF(lwp) WRITE(numout,*)
1534	nstop = nstop + 1
1535	ELSE
1536	IF(lwp) WRITE(numout,*)
1537	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1538	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1539	& ' and North segment: ',npckgn(ib2)
1540	IF(lwp) WRITE(numout,*)
1541	nstop = nstop + 1
1542	END IF
1543	END IF
1544	END DO
1545	END DO
1546	END IF
1547	!
1548	! 3. Check if segment extremities are on land
1549	!--------------------------------------------
1550	!
1551	! West segments
1552	DO ib = 1, nbdysegw
1553	! get mask at boundary extremities:
1554	ztestmask(1:2)=0.
1555	DO ji = 1, jpi
1556	DO jj = 1, jpj
1557	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1558	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1559	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1560	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1561	END DO
1562	END DO
1563	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1564
1565	IF (ztestmask(1)==1) THEN
1566	IF (icornw(ib,1)==0) THEN
1567	IF(lwp) WRITE(numout,*)
1568	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1569	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1570	IF(lwp) WRITE(numout,*)
1571	nstop = nstop + 1
1572	ELSE
1573	! This is a corner
1574	WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1575	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1576	itest=itest+1
1577	ENDIF
1578	ENDIF
1579	IF (ztestmask(2)==1) THEN
1580	IF (icornw(ib,2)==0) THEN
1581	IF(lwp) WRITE(numout,*)
1582	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1583	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1584	IF(lwp) WRITE(numout,*)
1585	nstop = nstop + 1
1586	ELSE
1587	! This is a corner
1588	WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1589	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1590	itest=itest+1
1591	ENDIF
1592	ENDIF
1593	END DO
1594	!
1595	! East segments
1596	DO ib = 1, nbdysege
1597	! get mask at boundary extremities:
1598	ztestmask(1:2)=0.
1599	DO ji = 1, jpi
1600	DO jj = 1, jpj
1601	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1602	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1603	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1604	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1605	END DO
1606	END DO
1607	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1608
1609	IF (ztestmask(1)==1) THEN
1610	IF (icorne(ib,1)==0) THEN
1611	IF(lwp) WRITE(numout,*)
1612	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1613	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1614	IF(lwp) WRITE(numout,*)
1615	nstop = nstop + 1
1616	ELSE
1617	! This is a corner
1618	WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1619	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1620	itest=itest+1
1621	ENDIF
1622	ENDIF
1623	IF (ztestmask(2)==1) THEN
1624	IF (icorne(ib,2)==0) THEN
1625	IF(lwp) WRITE(numout,*)
1626	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1627	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1628	IF(lwp) WRITE(numout,*)
1629	nstop = nstop + 1
1630	ELSE
1631	! This is a corner
1632	WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1633	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1634	itest=itest+1
1635	ENDIF
1636	ENDIF
1637	END DO
1638	!
1639	! South segments
1640	DO ib = 1, nbdysegs
1641	! get mask at boundary extremities:
1642	ztestmask(1:2)=0.
1643	DO ji = 1, jpi
1644	DO jj = 1, jpj
1645	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1646	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1647	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1648	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1649	END DO
1650	END DO
1651	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1652
1653	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1654	IF(lwp) WRITE(numout,*)
1655	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1656	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1657	IF(lwp) WRITE(numout,*)
1658	nstop = nstop + 1
1659	ENDIF
1660	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1661	IF(lwp) WRITE(numout,*)
1662	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1663	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1664	IF(lwp) WRITE(numout,*)
1665	nstop = nstop + 1
1666	ENDIF
1667	END DO
1668	!
1669	! North segments
1670	DO ib = 1, nbdysegn
1671	! get mask at boundary extremities:
1672	ztestmask(1:2)=0.
1673	DO ji = 1, jpi
1674	DO jj = 1, jpj
1675	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1676	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1677	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1678	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1679	END DO
1680	END DO
1681	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1682
1683	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1684	IF(lwp) WRITE(numout,*)
1685	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1686	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1687	IF(lwp) WRITE(numout,*)
1688	nstop = nstop + 1
1689	ENDIF
1690	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1691	IF(lwp) WRITE(numout,*)
1692	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1693	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1694	IF(lwp) WRITE(numout,*)
1695	nstop = nstop + 1
1696	ENDIF
1697	END DO
1698	!
1699	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1700	!
1701	! Other tests TBD:
1702	! segments completly on land
1703	! optimized open boundary array length according to landmask
1704	! Nudging layers that overlap with interior domain
1705	!
1706	END SUBROUTINE bdy_ctl_seg
1707
1708	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1709	!!----------------------------------------------------------------------
1710	!! * ROUTINE bdy_ctl_corn *
1711	!!
1712	!! ** Purpose : Check numerical schemes consistency between
1713	!! segments having a common corner
1714	!!
1715	!! ** Method :
1716	!!----------------------------------------------------------------------
1717	INTEGER, INTENT(in) :: ib1, ib2
1718	INTEGER :: itest
1719	!!----------------------------------------------------------------------
1720	itest = 0
1721
1722	IF (cn_dyn2d(ib1)/=cn_dyn2d(ib2)) itest = itest + 1
1723	IF (cn_dyn3d(ib1)/=cn_dyn3d(ib2)) itest = itest + 1
1724	IF (cn_tra(ib1)/=cn_tra(ib2)) itest = itest + 1
1725	!
1726	IF (nn_dyn2d_dta(ib1)/=nn_dyn2d_dta(ib2)) itest = itest + 1
1727	IF (nn_dyn3d_dta(ib1)/=nn_dyn3d_dta(ib2)) itest = itest + 1
1728	IF (nn_tra_dta(ib1)/=nn_tra_dta(ib2)) itest = itest + 1
1729	!
1730	IF (nn_rimwidth(ib1)/=nn_rimwidth(ib2)) itest = itest + 1
1731	!
1732	IF ( itest>0 ) THEN
1733	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1734	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1735	IF(lwp) WRITE(numout,*)
1736	nstop = nstop + 1
1737	ENDIF
1738	!
1739	END SUBROUTINE bdy_ctl_corn
1740
1741	#else
1742	!!---------------------------------------------------------------------------------
1743	!! Dummy module NO open boundaries
1744	!!---------------------------------------------------------------------------------
1745	CONTAINS
1746	SUBROUTINE bdy_init ! Dummy routine
1747	END SUBROUTINE bdy_init
1748	#endif
1749
1750	!!=================================================================================
1751	END MODULE bdyini

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