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bdyini.F90 in branches/2016/dev_r6522_SIMPLIF_3/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

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source: branches/2016/dev_r6522_SIMPLIF_3/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 6862

Last change on this file since 6862 was 6862, checked in by lovato, 8 years ago
#1729 - trunk: removed key_bdy from the code and set usage of ln_bdy. Tested with SETTE.
Property svn:keywords set to `Id`
File size: 82.5 KB

Line
1	MODULE bdyini
2	!!======================================================================
3	!! * MODULE bdyini *
4	!! Unstructured open boundaries : initialisation
5	!!======================================================================
6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
8	!! - ! 2007-01 (D. Storkey) Tidal forcing
9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
10	!! 3.3 ! 2010-09 (E.O'Dea) updates for Shelf configurations
11	!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
12	!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
13	!! 3.4 ! 2012 (J. Chanut) straight open boundary case update
14	!! 3.5 ! 2012 (S. Mocavero, I. Epicoco) optimization of BDY communications
15	!! 3.7 ! 2016 (T. Lovato) Remove bdy macro, call here init for dta and tides
16	!!----------------------------------------------------------------------
17	!! bdy_init : Initialization of unstructured open boundaries
18	!!----------------------------------------------------------------------
19	USE oce ! ocean dynamics and tracers variables
20	USE dom_oce ! ocean space and time domain
21	USE bdy_oce ! unstructured open boundary conditions
22	USE bdydta ! open boundary cond. setting (bdy_dta_init routine)
23	USE bdytides ! open boundary cond. setting (bdytide_init routine)
24	USE sbctide , ONLY: lk_tide ! Tidal forcing or not
25	USE phycst , ONLY: rday
26	!
27	USE in_out_manager ! I/O units
28	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
29	USE lib_mpp ! for mpp_sum
30	USE iom ! I/O
31	USE wrk_nemo ! Memory Allocation
32	USE timing ! Timing
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 3.7 , NEMO Consortium (2015)
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
68	! local variables
69	!-------------------
70	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
71	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
72	INTEGER :: iwe, ies, iso, ino, inum, id_dummy ! - -
73	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
74	INTEGER :: jpbdtau, jpbdtas ! - -
75	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
76	INTEGER :: i_offset, j_offset ! - -
77	INTEGER , POINTER :: nbi, nbj, nbr ! short cuts
78	REAL(wp), POINTER :: flagu, flagv ! - -
79	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
80	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
81	INTEGER, DIMENSION (2) :: kdimsz
82	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
83	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
84	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
85	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
86	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
87	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
88	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
89	REAL(wp), POINTER, DIMENSION(:,:) :: zfmask ! temporary fmask array excluding coastal boundary condition (shlat)
90	!!
91	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile ! Namelist variables
92	CHARACTER(LEN=1) :: ctypebdy ! - -
93	INTEGER :: nbdyind, nbdybeg, nbdyend
94	!!
95	NAMELIST/nambdy/ ln_bdy, nb_bdy, ln_coords_file, cn_coords_file, &
96	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
97	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
98	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
99	& cn_ice_lim, nn_ice_lim_dta, &
100	& rn_ice_tem, rn_ice_sal, rn_ice_age, &
101	& ln_vol, nn_volctl, nn_rimwidth
102	!
103	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
104	INTEGER :: ios ! Local integer output status for namelist read
105	!!----------------------------------------------------------------------
106	!
107	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
108	!
109	cgrid = (/'t','u','v'/)
110
111	! ------------------------
112	! Read namelist parameters
113	! ------------------------
114	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
115	READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 901)
116	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp )
117	!
118	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
119	READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 902 )
120	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp )
121	IF(lwm) WRITE ( numond, nambdy )
122
123	! -----------------------------------------
124	! Check and write out namelist parameters
125	! -----------------------------------------
126	! ! control prints
127	IF ( ln_bdy ) THEN
128	IF(lwp) WRITE(numout,*)
129	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
130	IF(lwp) WRITE(numout,*) '~~~~~~~~'
131	ELSE
132	IF(lwp) WRITE(numout,*)
133	IF(lwp) WRITE(numout,*) 'bdy_init : open boundaries not used (ln_bdy = F)'
134	IF(lwp) WRITE(numout,*) '~~~~~~~~'
135	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
136	return
137	ENDIF
138
139	IF( jperio /= 0 ) CALL ctl_stop( 'bdy_init: Cyclic or symmetric,', &
140	& ' and general open boundary condition are not compatible' )
141
142	IF( nb_bdy == 0 ) THEN
143	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
144	ELSE
145	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ', nb_bdy
146	ENDIF
147
148	DO ib_bdy = 1,nb_bdy
149	IF(lwp) WRITE(numout,*) ' '
150	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
151
152	IF( ln_coords_file(ib_bdy) ) THEN
153	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
154	ELSE
155	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
156	ENDIF
157	IF(lwp) WRITE(numout,*)
158
159	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
160	SELECT CASE( cn_dyn2d(ib_bdy) )
161	CASE( 'none' )
162	IF(lwp) WRITE(numout,*) ' no open boundary condition'
163	dta_bdy(ib_bdy)%ll_ssh = .false.
164	dta_bdy(ib_bdy)%ll_u2d = .false.
165	dta_bdy(ib_bdy)%ll_v2d = .false.
166	CASE( 'frs' )
167	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
168	dta_bdy(ib_bdy)%ll_ssh = .false.
169	dta_bdy(ib_bdy)%ll_u2d = .true.
170	dta_bdy(ib_bdy)%ll_v2d = .true.
171	CASE( 'flather' )
172	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
173	dta_bdy(ib_bdy)%ll_ssh = .true.
174	dta_bdy(ib_bdy)%ll_u2d = .true.
175	dta_bdy(ib_bdy)%ll_v2d = .true.
176	CASE( 'orlanski' )
177	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
178	dta_bdy(ib_bdy)%ll_ssh = .false.
179	dta_bdy(ib_bdy)%ll_u2d = .true.
180	dta_bdy(ib_bdy)%ll_v2d = .true.
181	CASE( 'orlanski_npo' )
182	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
183	dta_bdy(ib_bdy)%ll_ssh = .false.
184	dta_bdy(ib_bdy)%ll_u2d = .true.
185	dta_bdy(ib_bdy)%ll_v2d = .true.
186	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
187	END SELECT
188	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
189	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
190	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
191	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
192	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
193	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
194	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
195	END SELECT
196	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
197	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
198	ENDIF
199	ENDIF
200	IF(lwp) WRITE(numout,*)
201
202	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
203	SELECT CASE( cn_dyn3d(ib_bdy) )
204	CASE('none')
205	IF(lwp) WRITE(numout,*) ' no open boundary condition'
206	dta_bdy(ib_bdy)%ll_u3d = .false.
207	dta_bdy(ib_bdy)%ll_v3d = .false.
208	CASE('frs')
209	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
210	dta_bdy(ib_bdy)%ll_u3d = .true.
211	dta_bdy(ib_bdy)%ll_v3d = .true.
212	CASE('specified')
213	IF(lwp) WRITE(numout,*) ' Specified value'
214	dta_bdy(ib_bdy)%ll_u3d = .true.
215	dta_bdy(ib_bdy)%ll_v3d = .true.
216	CASE('zero')
217	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
218	dta_bdy(ib_bdy)%ll_u3d = .false.
219	dta_bdy(ib_bdy)%ll_v3d = .false.
220	CASE('orlanski')
221	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
222	dta_bdy(ib_bdy)%ll_u3d = .true.
223	dta_bdy(ib_bdy)%ll_v3d = .true.
224	CASE('orlanski_npo')
225	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
226	dta_bdy(ib_bdy)%ll_u3d = .true.
227	dta_bdy(ib_bdy)%ll_v3d = .true.
228	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
229	END SELECT
230	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
231	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
232	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
233	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
234	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
235	END SELECT
236	ENDIF
237
238	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
239	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
240	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
241	ln_dyn3d_dmp(ib_bdy)=.false.
242	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
243	CALL ctl_stop( 'Use FRS OR relaxation' )
244	ELSE
245	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
246	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
247	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
248	dta_bdy(ib_bdy)%ll_u3d = .true.
249	dta_bdy(ib_bdy)%ll_v3d = .true.
250	ENDIF
251	ELSE
252	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
253	ENDIF
254	IF(lwp) WRITE(numout,*)
255
256	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
257	SELECT CASE( cn_tra(ib_bdy) )
258	CASE('none')
259	IF(lwp) WRITE(numout,*) ' no open boundary condition'
260	dta_bdy(ib_bdy)%ll_tem = .false.
261	dta_bdy(ib_bdy)%ll_sal = .false.
262	CASE('frs')
263	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
264	dta_bdy(ib_bdy)%ll_tem = .true.
265	dta_bdy(ib_bdy)%ll_sal = .true.
266	CASE('specified')
267	IF(lwp) WRITE(numout,*) ' Specified value'
268	dta_bdy(ib_bdy)%ll_tem = .true.
269	dta_bdy(ib_bdy)%ll_sal = .true.
270	CASE('neumann')
271	IF(lwp) WRITE(numout,*) ' Neumann conditions'
272	dta_bdy(ib_bdy)%ll_tem = .false.
273	dta_bdy(ib_bdy)%ll_sal = .false.
274	CASE('runoff')
275	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
276	dta_bdy(ib_bdy)%ll_tem = .false.
277	dta_bdy(ib_bdy)%ll_sal = .false.
278	CASE('orlanski')
279	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
280	dta_bdy(ib_bdy)%ll_tem = .true.
281	dta_bdy(ib_bdy)%ll_sal = .true.
282	CASE('orlanski_npo')
283	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
284	dta_bdy(ib_bdy)%ll_tem = .true.
285	dta_bdy(ib_bdy)%ll_sal = .true.
286	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
287	END SELECT
288	IF( cn_tra(ib_bdy) /= 'none' ) THEN
289	SELECT CASE( nn_tra_dta(ib_bdy) ) !
290	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
291	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
292	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
293	END SELECT
294	ENDIF
295
296	IF ( ln_tra_dmp(ib_bdy) ) THEN
297	IF ( cn_tra(ib_bdy) == 'none' ) THEN
298	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
299	ln_tra_dmp(ib_bdy)=.false.
300	ELSEIF ( cn_tra(ib_bdy) == 'frs' ) THEN
301	CALL ctl_stop( 'Use FRS OR relaxation' )
302	ELSE
303	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
304	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
305	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
306	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
307	dta_bdy(ib_bdy)%ll_tem = .true.
308	dta_bdy(ib_bdy)%ll_sal = .true.
309	ENDIF
310	ELSE
311	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
312	ENDIF
313	IF(lwp) WRITE(numout,*)
314
315	#if defined key_lim2
316	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
317	SELECT CASE( cn_ice_lim(ib_bdy) )
318	CASE('none')
319	IF(lwp) WRITE(numout,*) ' no open boundary condition'
320	dta_bdy(ib_bdy)%ll_frld = .false.
321	dta_bdy(ib_bdy)%ll_hicif = .false.
322	dta_bdy(ib_bdy)%ll_hsnif = .false.
323	CASE('frs')
324	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
325	dta_bdy(ib_bdy)%ll_frld = .true.
326	dta_bdy(ib_bdy)%ll_hicif = .true.
327	dta_bdy(ib_bdy)%ll_hsnif = .true.
328	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
329	END SELECT
330	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
331	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
332	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
333	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
334	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
335	END SELECT
336	ENDIF
337	IF(lwp) WRITE(numout,*)
338	#elif defined key_lim3
339	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
340	SELECT CASE( cn_ice_lim(ib_bdy) )
341	CASE('none')
342	IF(lwp) WRITE(numout,*) ' no open boundary condition'
343	dta_bdy(ib_bdy)%ll_a_i = .false.
344	dta_bdy(ib_bdy)%ll_ht_i = .false.
345	dta_bdy(ib_bdy)%ll_ht_s = .false.
346	CASE('frs')
347	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
348	dta_bdy(ib_bdy)%ll_a_i = .true.
349	dta_bdy(ib_bdy)%ll_ht_i = .true.
350	dta_bdy(ib_bdy)%ll_ht_s = .true.
351	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
352	END SELECT
353	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
354	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
355	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
356	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
357	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
358	END SELECT
359	ENDIF
360	IF(lwp) WRITE(numout,*)
361	IF(lwp) WRITE(numout,*) ' tem of bdy sea-ice = ', rn_ice_tem(ib_bdy)
362	IF(lwp) WRITE(numout,*) ' sal of bdy sea-ice = ', rn_ice_sal(ib_bdy)
363	IF(lwp) WRITE(numout,*) ' age of bdy sea-ice = ', rn_ice_age(ib_bdy)
364	#endif
365
366	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
367	IF(lwp) WRITE(numout,*)
368
369	ENDDO
370
371	IF (nb_bdy .gt. 0) THEN
372	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
373	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
374	IF(lwp) WRITE(numout,*)
375	SELECT CASE ( nn_volctl )
376	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
377	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
378	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
379	END SELECT
380	IF(lwp) WRITE(numout,*)
381	ELSE
382	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
383	IF(lwp) WRITE(numout,*)
384	ENDIF
385	ENDIF
386
387	! -------------------------------------------------
388	! Initialise indices arrays for open boundaries
389	! -------------------------------------------------
390
391	! Work out global dimensions of boundary data
392	! ---------------------------------------------
393	REWIND( numnam_cfg )
394
395	nblendta(:,:) = 0
396	nbdysege = 0
397	nbdysegw = 0
398	nbdysegn = 0
399	nbdysegs = 0
400	icount = 0 ! count user defined segments
401	! Dimensions below are used to allocate arrays to read external data
402	jpbdtas = 1 ! Maximum size of boundary data (structured case)
403	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
404
405	DO ib_bdy = 1, nb_bdy
406
407	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
408
409	icount = icount + 1
410	! No REWIND here because may need to read more than one nambdy_index namelist.
411	! Read only namelist_cfg to avoid unseccessfull overwrite
412	!! REWIND( numnam_ref ) ! Namelist nambdy_index in reference namelist : Open boundaries indexes
413	!! READ ( numnam_ref, namrun, IOSTAT = ios, ERR = 903)
414	!!903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in reference namelist', lwp )
415
416	!! REWIND( numnam_cfg ) ! Namelist nambdy_index in configuration namelist : Open boundaries indexes
417	READ ( numnam_cfg, nambdy_index, IOSTAT = ios, ERR = 904 )
418	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in configuration namelist', lwp )
419	IF(lwm) WRITE ( numond, nambdy_index )
420
421	SELECT CASE ( TRIM(ctypebdy) )
422	CASE( 'N' )
423	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
424	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
425	nbdybeg = 2
426	nbdyend = jpiglo - 1
427	ENDIF
428	nbdysegn = nbdysegn + 1
429	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
430	jpjnob(nbdysegn) = nbdyind
431	jpindt(nbdysegn) = nbdybeg
432	jpinft(nbdysegn) = nbdyend
433	!
434	CASE( 'S' )
435	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
436	nbdyind = 2 ! set boundary to whole side of model domain.
437	nbdybeg = 2
438	nbdyend = jpiglo - 1
439	ENDIF
440	nbdysegs = nbdysegs + 1
441	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
442	jpjsob(nbdysegs) = nbdyind
443	jpisdt(nbdysegs) = nbdybeg
444	jpisft(nbdysegs) = nbdyend
445	!
446	CASE( 'E' )
447	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
448	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
449	nbdybeg = 2
450	nbdyend = jpjglo - 1
451	ENDIF
452	nbdysege = nbdysege + 1
453	npckge(nbdysege) = ib_bdy ! Save bdy package number
454	jpieob(nbdysege) = nbdyind
455	jpjedt(nbdysege) = nbdybeg
456	jpjeft(nbdysege) = nbdyend
457	!
458	CASE( 'W' )
459	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
460	nbdyind = 2 ! set boundary to whole side of model domain.
461	nbdybeg = 2
462	nbdyend = jpjglo - 1
463	ENDIF
464	nbdysegw = nbdysegw + 1
465	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
466	jpiwob(nbdysegw) = nbdyind
467	jpjwdt(nbdysegw) = nbdybeg
468	jpjwft(nbdysegw) = nbdyend
469	!
470	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
471	END SELECT
472
473	! For simplicity we assume that in case of straight bdy, arrays have the same length
474	! (even if it is true that last tangential velocity points
475	! are useless). This simplifies a little bit boundary data format (and agrees with format
476	! used so far in obc package)
477
478	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
479	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
480	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
481	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
482
483	ELSE ! Read size of arrays in boundary coordinates file.
484	CALL iom_open( cn_coords_file(ib_bdy), inum )
485	DO igrd = 1, jpbgrd
486	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
487	!clem nblendta(igrd,ib_bdy) = kdimsz(1)
488	!clem jpbdtau = MAX(jpbdtau, kdimsz(1))
489	nblendta(igrd,ib_bdy) = MAXVAL(kdimsz)
490	jpbdtau = MAX(jpbdtau, MAXVAL(kdimsz))
491	END DO
492	CALL iom_close( inum )
493	!
494	ENDIF
495	!
496	END DO ! ib_bdy
497
498	IF (nb_bdy>0) THEN
499	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
500
501	! Allocate arrays
502	!---------------
503	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
504	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
505
506	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
507	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
508	!
509	ENDIF
510
511	! Now look for crossings in user (namelist) defined open boundary segments:
512	!--------------------------------------------------------------------------
513	IF( icount>0 ) CALL bdy_ctl_seg
514
515	! Calculate global boundary index arrays or read in from file
516	!------------------------------------------------------------
517	! 1. Read global index arrays from boundary coordinates file.
518	DO ib_bdy = 1, nb_bdy
519	!
520	IF( ln_coords_file(ib_bdy) ) THEN
521	!
522	CALL iom_open( cn_coords_file(ib_bdy), inum )
523	DO igrd = 1, jpbgrd
524	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
525	DO ii = 1,nblendta(igrd,ib_bdy)
526	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
527	END DO
528	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
529	DO ii = 1,nblendta(igrd,ib_bdy)
530	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
531	END DO
532	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
533	DO ii = 1,nblendta(igrd,ib_bdy)
534	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
535	END DO
536	!
537	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
538	IF(lwp) WRITE(numout,*)
539	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
540	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
541	IF (ibr_max < nn_rimwidth(ib_bdy)) &
542	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
543	END DO
544	CALL iom_close( inum )
545	!
546	ENDIF
547	!
548	END DO
549
550	! 2. Now fill indices corresponding to straight open boundary arrays:
551	! East
552	!-----
553	DO iseg = 1, nbdysege
554	ib_bdy = npckge(iseg)
555	!
556	! ------------ T points -------------
557	igrd=1
558	icount=0
559	DO ir = 1, nn_rimwidth(ib_bdy)
560	DO ij = jpjedt(iseg), jpjeft(iseg)
561	icount = icount + 1
562	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
563	nbjdta(icount, igrd, ib_bdy) = ij
564	nbrdta(icount, igrd, ib_bdy) = ir
565	ENDDO
566	ENDDO
567	!
568	! ------------ U points -------------
569	igrd=2
570	icount=0
571	DO ir = 1, nn_rimwidth(ib_bdy)
572	DO ij = jpjedt(iseg), jpjeft(iseg)
573	icount = icount + 1
574	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
575	nbjdta(icount, igrd, ib_bdy) = ij
576	nbrdta(icount, igrd, ib_bdy) = ir
577	ENDDO
578	ENDDO
579	!
580	! ------------ V points -------------
581	igrd=3
582	icount=0
583	DO ir = 1, nn_rimwidth(ib_bdy)
584	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
585	DO ij = jpjedt(iseg), jpjeft(iseg)
586	icount = icount + 1
587	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
588	nbjdta(icount, igrd, ib_bdy) = ij
589	nbrdta(icount, igrd, ib_bdy) = ir
590	ENDDO
591	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
592	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
593	ENDDO
594	ENDDO
595	!
596	! West
597	!-----
598	DO iseg = 1, nbdysegw
599	ib_bdy = npckgw(iseg)
600	!
601	! ------------ T points -------------
602	igrd=1
603	icount=0
604	DO ir = 1, nn_rimwidth(ib_bdy)
605	DO ij = jpjwdt(iseg), jpjwft(iseg)
606	icount = icount + 1
607	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
608	nbjdta(icount, igrd, ib_bdy) = ij
609	nbrdta(icount, igrd, ib_bdy) = ir
610	ENDDO
611	ENDDO
612	!
613	! ------------ U points -------------
614	igrd=2
615	icount=0
616	DO ir = 1, nn_rimwidth(ib_bdy)
617	DO ij = jpjwdt(iseg), jpjwft(iseg)
618	icount = icount + 1
619	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
620	nbjdta(icount, igrd, ib_bdy) = ij
621	nbrdta(icount, igrd, ib_bdy) = ir
622	ENDDO
623	ENDDO
624	!
625	! ------------ V points -------------
626	igrd=3
627	icount=0
628	DO ir = 1, nn_rimwidth(ib_bdy)
629	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
630	DO ij = jpjwdt(iseg), jpjwft(iseg)
631	icount = icount + 1
632	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
633	nbjdta(icount, igrd, ib_bdy) = ij
634	nbrdta(icount, igrd, ib_bdy) = ir
635	ENDDO
636	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
637	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
638	ENDDO
639	ENDDO
640	!
641	! North
642	!-----
643	DO iseg = 1, nbdysegn
644	ib_bdy = npckgn(iseg)
645	!
646	! ------------ T points -------------
647	igrd=1
648	icount=0
649	DO ir = 1, nn_rimwidth(ib_bdy)
650	DO ii = jpindt(iseg), jpinft(iseg)
651	icount = icount + 1
652	nbidta(icount, igrd, ib_bdy) = ii
653	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
654	nbrdta(icount, igrd, ib_bdy) = ir
655	ENDDO
656	ENDDO
657	!
658	! ------------ U points -------------
659	igrd=2
660	icount=0
661	DO ir = 1, nn_rimwidth(ib_bdy)
662	! DO ii = jpindt(iseg), jpinft(iseg) - 1
663	DO ii = jpindt(iseg), jpinft(iseg)
664	icount = icount + 1
665	nbidta(icount, igrd, ib_bdy) = ii
666	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
667	nbrdta(icount, igrd, ib_bdy) = ir
668	ENDDO
669	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
670	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
671	ENDDO
672	!
673	! ------------ V points -------------
674	igrd=3
675	icount=0
676	DO ir = 1, nn_rimwidth(ib_bdy)
677	DO ii = jpindt(iseg), jpinft(iseg)
678	icount = icount + 1
679	nbidta(icount, igrd, ib_bdy) = ii
680	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
681	nbrdta(icount, igrd, ib_bdy) = ir
682	ENDDO
683	ENDDO
684	ENDDO
685	!
686	! South
687	!-----
688	DO iseg = 1, nbdysegs
689	ib_bdy = npckgs(iseg)
690	!
691	! ------------ T points -------------
692	igrd=1
693	icount=0
694	DO ir = 1, nn_rimwidth(ib_bdy)
695	DO ii = jpisdt(iseg), jpisft(iseg)
696	icount = icount + 1
697	nbidta(icount, igrd, ib_bdy) = ii
698	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
699	nbrdta(icount, igrd, ib_bdy) = ir
700	ENDDO
701	ENDDO
702	!
703	! ------------ U points -------------
704	igrd=2
705	icount=0
706	DO ir = 1, nn_rimwidth(ib_bdy)
707	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
708	DO ii = jpisdt(iseg), jpisft(iseg)
709	icount = icount + 1
710	nbidta(icount, igrd, ib_bdy) = ii
711	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
712	nbrdta(icount, igrd, ib_bdy) = ir
713	ENDDO
714	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
715	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
716	ENDDO
717	!
718	! ------------ V points -------------
719	igrd=3
720	icount=0
721	DO ir = 1, nn_rimwidth(ib_bdy)
722	DO ii = jpisdt(iseg), jpisft(iseg)
723	icount = icount + 1
724	nbidta(icount, igrd, ib_bdy) = ii
725	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
726	nbrdta(icount, igrd, ib_bdy) = ir
727	ENDDO
728	ENDDO
729	ENDDO
730
731	! Deal with duplicated points
732	!-----------------------------
733	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
734	! if their distance to the bdy is greater than the other
735	! If their distance are the same, just keep only one to avoid updating a point twice
736	DO igrd = 1, jpbgrd
737	DO ib_bdy1 = 1, nb_bdy
738	DO ib_bdy2 = 1, nb_bdy
739	IF (ib_bdy1/=ib_bdy2) THEN
740	DO ib1 = 1, nblendta(igrd,ib_bdy1)
741	DO ib2 = 1, nblendta(igrd,ib_bdy2)
742	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
743	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
744	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
745	! & nbidta(ib1, igrd, ib_bdy1), &
746	! & nbjdta(ib2, igrd, ib_bdy2)
747	! keep only points with the lowest distance to boundary:
748	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
749	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
750	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
751	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
752	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
753	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
754	! Arbitrary choice if distances are the same:
755	ELSE
756	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
757	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
758	ENDIF
759	END IF
760	END DO
761	END DO
762	ENDIF
763	END DO
764	END DO
765	END DO
766
767	! Work out dimensions of boundary data on each processor
768	! ------------------------------------------------------
769
770	! Rather assume that boundary data indices are given on global domain
771	! TO BE DISCUSSED ?
772	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
773	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
774	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
775	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
776	iwe = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
777	ies = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
778	iso = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
779	ino = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
780
781	ALLOCATE( nbondi_bdy(nb_bdy))
782	ALLOCATE( nbondj_bdy(nb_bdy))
783	nbondi_bdy(:)=2
784	nbondj_bdy(:)=2
785	ALLOCATE( nbondi_bdy_b(nb_bdy))
786	ALLOCATE( nbondj_bdy_b(nb_bdy))
787	nbondi_bdy_b(:)=2
788	nbondj_bdy_b(:)=2
789
790	! Work out dimensions of boundary data on each neighbour process
791	IF(nbondi == 0) THEN
792	iw_b(1) = jpizoom + nimppt(nowe+1)
793	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
794	is_b(1) = jpjzoom + njmppt(nowe+1)
795	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
796
797	iw_b(2) = jpizoom + nimppt(noea+1)
798	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
799	is_b(2) = jpjzoom + njmppt(noea+1)
800	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
801	ELSEIF(nbondi == 1) THEN
802	iw_b(1) = jpizoom + nimppt(nowe+1)
803	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
804	is_b(1) = jpjzoom + njmppt(nowe+1)
805	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
806	ELSEIF(nbondi == -1) THEN
807	iw_b(2) = jpizoom + nimppt(noea+1)
808	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
809	is_b(2) = jpjzoom + njmppt(noea+1)
810	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
811	ENDIF
812
813	IF(nbondj == 0) THEN
814	iw_b(3) = jpizoom + nimppt(noso+1)
815	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
816	is_b(3) = jpjzoom + njmppt(noso+1)
817	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
818
819	iw_b(4) = jpizoom + nimppt(nono+1)
820	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
821	is_b(4) = jpjzoom + njmppt(nono+1)
822	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
823	ELSEIF(nbondj == 1) THEN
824	iw_b(3) = jpizoom + nimppt(noso+1)
825	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
826	is_b(3) = jpjzoom + njmppt(noso+1)
827	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
828	ELSEIF(nbondj == -1) THEN
829	iw_b(4) = jpizoom + nimppt(nono+1)
830	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
831	is_b(4) = jpjzoom + njmppt(nono+1)
832	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
833	ENDIF
834
835	DO ib_bdy = 1, nb_bdy
836	DO igrd = 1, jpbgrd
837	icount = 0
838	icountr = 0
839	idx_bdy(ib_bdy)%nblen(igrd) = 0
840	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
841	DO ib = 1, nblendta(igrd,ib_bdy)
842	! check that data is in correct order in file
843	ibm1 = MAX(1,ib-1)
844	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
845	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
846	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined ', &
847	& ' in order of distance from edge nbr A utility for re-ordering ', &
848	& ' boundary coordinates and data files exists in the TOOLS/OBC directory')
849	ENDIF
850	ENDIF
851	! check if point is in local domain
852	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
853	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino ) THEN
854	!
855	icount = icount + 1
856	!
857	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
858	ENDIF
859	ENDDO
860	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
861	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
862	ENDDO ! igrd
863
864	! Allocate index arrays for this boundary set
865	!--------------------------------------------
866	ilen1 = MAXVAL( idx_bdy(ib_bdy)%nblen(:) )
867	ALLOCATE( idx_bdy(ib_bdy)%nbi (ilen1,jpbgrd) )
868	ALLOCATE( idx_bdy(ib_bdy)%nbj (ilen1,jpbgrd) )
869	ALLOCATE( idx_bdy(ib_bdy)%nbr (ilen1,jpbgrd) )
870	ALLOCATE( idx_bdy(ib_bdy)%nbd (ilen1,jpbgrd) )
871	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
872	ALLOCATE( idx_bdy(ib_bdy)%nbmap (ilen1,jpbgrd) )
873	ALLOCATE( idx_bdy(ib_bdy)%nbw (ilen1,jpbgrd) )
874	ALLOCATE( idx_bdy(ib_bdy)%flagu (ilen1,jpbgrd) )
875	ALLOCATE( idx_bdy(ib_bdy)%flagv (ilen1,jpbgrd) )
876
877	! Dispatch mapping indices and discrete distances on each processor
878	! -----------------------------------------------------------------
879
880	com_east = 0
881	com_west = 0
882	com_south = 0
883	com_north = 0
884
885	com_east_b = 0
886	com_west_b = 0
887	com_south_b = 0
888	com_north_b = 0
889
890	DO igrd = 1, jpbgrd
891	icount = 0
892	! Loop on rimwidth to ensure outermost points come first in the local arrays.
893	DO ir=1, nn_rimwidth(ib_bdy)
894	DO ib = 1, nblendta(igrd,ib_bdy)
895	! check if point is in local domain and equals ir
896	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
897	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino .AND. &
898	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
899	!
900	icount = icount + 1
901
902	! Rather assume that boundary data indices are given on global domain
903	! TO BE DISCUSSED ?
904	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
905	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
906	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
907	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
908	! check if point has to be sent
909	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
910	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
911	if((com_east .ne. 1) .and. (ii == (nlci-1)) .and. (nbondi .le. 0)) then
912	com_east = 1
913	elseif((com_west .ne. 1) .and. (ii == 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
914	com_west = 1
915	endif
916	if((com_south .ne. 1) .and. (ij == 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
917	com_south = 1
918	elseif((com_north .ne. 1) .and. (ij == (nlcj-1)) .and. (nbondj .le. 0)) then
919	com_north = 1
920	endif
921	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
922	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
923	ENDIF
924	! check if point has to be received from a neighbour
925	IF(nbondi == 0) THEN
926	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
927	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
928	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
929	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
930	if((com_west_b .ne. 1) .and. (ii == (nlcit(nowe+1)-1))) then
931	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
932	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
933	com_south = 1
934	elseif((ij == nlcjt(nowe+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
935	com_north = 1
936	endif
937	com_west_b = 1
938	endif
939	ENDIF
940	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
941	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
942	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
943	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
944	if((com_east_b .ne. 1) .and. (ii == 2)) then
945	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
946	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
947	com_south = 1
948	elseif((ij == nlcjt(noea+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
949	com_north = 1
950	endif
951	com_east_b = 1
952	endif
953	ENDIF
954	ELSEIF(nbondi == 1) THEN
955	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
956	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
957	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
958	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
959	if((com_west_b .ne. 1) .and. (ii == (nlcit(nowe+1)-1))) then
960	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
961	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
962	com_south = 1
963	elseif((ij == nlcjt(nowe+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
964	com_north = 1
965	endif
966	com_west_b = 1
967	endif
968	ENDIF
969	ELSEIF(nbondi == -1) THEN
970	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
971	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
972	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
973	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
974	if((com_east_b .ne. 1) .and. (ii == 2)) then
975	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
976	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
977	com_south = 1
978	elseif((ij == nlcjt(noea+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
979	com_north = 1
980	endif
981	com_east_b = 1
982	endif
983	ENDIF
984	ENDIF
985	IF(nbondj == 0) THEN
986	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
987	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
988	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
989	com_north_b = 1
990	ENDIF
991	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
992	&.OR. 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 == (nlcjt(noso+1)-1))) then
1001	com_south_b = 1
1002	endif
1003	ENDIF
1004	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1005	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1006	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1007	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1008	if((com_north_b .ne. 1) .and. (ij == 2)) then
1009	com_north_b = 1
1010	endif
1011	ENDIF
1012	ELSEIF(nbondj == 1) THEN
1013	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
1014	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1015	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1016	com_south_b = 1
1017	ENDIF
1018	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1019	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1020	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1021	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1022	if((com_south_b .ne. 1) .and. (ij == (nlcjt(noso+1)-1))) then
1023	com_south_b = 1
1024	endif
1025	ENDIF
1026	ELSEIF(nbondj == -1) THEN
1027	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1028	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1029	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1030	com_north_b = 1
1031	ENDIF
1032	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1033	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1034	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1035	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1036	if((com_north_b .ne. 1) .and. (ij == 2)) then
1037	com_north_b = 1
1038	endif
1039	ENDIF
1040	ENDIF
1041	ENDDO
1042	ENDDO
1043	ENDDO
1044
1045	! definition of the i- and j- direction local boundaries arrays used for sending the boundaries
1046	IF( (com_east == 1) .and. (com_west == 1) ) THEN ; nbondi_bdy(ib_bdy) = 0
1047	ELSEIF( (com_east == 1) .and. (com_west == 0) ) THEN ; nbondi_bdy(ib_bdy) = -1
1048	ELSEIF( (com_east == 0) .and. (com_west == 1) ) THEN ; nbondi_bdy(ib_bdy) = 1
1049	ENDIF
1050	IF( (com_north == 1) .and. (com_south == 1) ) THEN ; nbondj_bdy(ib_bdy) = 0
1051	ELSEIF( (com_north == 1) .and. (com_south == 0) ) THEN ; nbondj_bdy(ib_bdy) = -1
1052	ELSEIF( (com_north == 0) .and. (com_south == 1) ) THEN ; nbondj_bdy(ib_bdy) = 1
1053	ENDIF
1054
1055	! definition of the i- and j- direction local boundaries arrays used for receiving the boundaries
1056	IF( (com_east_b == 1) .and. (com_west_b == 1) ) THEN ; nbondi_bdy_b(ib_bdy) = 0
1057	ELSEIF( (com_east_b == 1) .and. (com_west_b == 0) ) THEN ; nbondi_bdy_b(ib_bdy) = -1
1058	ELSEIF( (com_east_b == 0) .and. (com_west_b == 1) ) THEN ; nbondi_bdy_b(ib_bdy) = 1
1059	ENDIF
1060	IF( (com_north_b == 1) .and. (com_south_b == 1) ) THEN ; nbondj_bdy_b(ib_bdy) = 0
1061	ELSEIF( (com_north_b == 1) .and. (com_south_b == 0) ) THEN ; nbondj_bdy_b(ib_bdy) = -1
1062	ELSEIF( (com_north_b == 0) .and. (com_south_b == 1) ) THEN ; nbondj_bdy_b(ib_bdy) = 1
1063	ENDIF
1064
1065	! Compute rim weights for FRS scheme
1066	! ----------------------------------
1067	DO igrd = 1, jpbgrd
1068	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1069	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1070	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( REAL( nbr - 1 ) *0.5 ) ! tanh formulation
1071	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))**2. ! quadratic
1072	! idx_bdy(ib_bdy)%nbw(ib,igrd) = REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)) ! linear
1073	END DO
1074	END DO
1075
1076	! Compute damping coefficients
1077	! ----------------------------
1078	DO igrd = 1, jpbgrd
1079	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1080	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1081	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1082	& (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))*2. ! quadratic
1083	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1084	& (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))*2. ! quadratic
1085	END DO
1086	END DO
1087
1088	ENDDO
1089
1090	! ------------------------------------------------------
1091	! Initialise masks and find normal/tangential directions
1092	! ------------------------------------------------------
1093
1094	! Read global 2D mask at T-points: bdytmask
1095	! -----------------------------------------
1096	! bdytmask = 1 on the computational domain AND on open boundaries
1097	! = 0 elsewhere
1098
1099	IF( ln_mask_file ) THEN
1100	CALL iom_open( cn_mask_file, inum )
1101	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1102	CALL iom_close( inum )
1103
1104	! Derive mask on U and V grid from mask on T grid
1105	bdyumask(:,:) = 0._wp
1106	bdyvmask(:,:) = 0._wp
1107	DO ij=1, jpjm1
1108	DO ii=1, jpim1
1109	bdyumask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii+1, ij )
1110	bdyvmask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii ,ij+1)
1111	END DO
1112	END DO
1113	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1114
1115
1116	! Mask corrections
1117	! ----------------
1118	DO ik = 1, jpkm1
1119	DO ij = 1, jpj
1120	DO ii = 1, jpi
1121	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
1122	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
1123	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
1124	END DO
1125	END DO
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	tmask_i (:,:) = ssmask(:,:) * tmask_i(:,:)
1134	!
1135	ENDIF ! ln_mask_file=.TRUE.
1136
1137	bdytmask(:,:) = ssmask(:,:)
1138	IF( .NOT.ln_mask_file ) THEN
1139	! If .not. ln_mask_file then we need to derive mask on U and V grid from mask on T grid here.
1140	bdyumask(:,:) = 0._wp
1141	bdyvmask(:,:) = 0._wp
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 are now set to zero on boundary points:
1152	!
1153	igrd = 1
1154	DO ib_bdy = 1, nb_bdy
1155	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1156	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1157	END DO
1158	END DO
1159	!
1160	igrd = 2
1161	DO ib_bdy = 1, nb_bdy
1162	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1163	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1164	END DO
1165	END DO
1166	!
1167	igrd = 3
1168	DO ib_bdy = 1, nb_bdy
1169	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1170	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1171	ENDDO
1172	ENDDO
1173
1174	! For the flagu/flagv calculation below we require a version of fmask without
1175	! the land boundary condition (shlat) included:
1176	CALL wrk_alloc(jpi,jpj, zfmask )
1177	DO ij = 2, jpjm1
1178	DO ii = 2, jpim1
1179	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1180	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1181	END DO
1182	END DO
1183
1184	! Lateral boundary conditions
1185	CALL lbc_lnk( zfmask , 'F', 1. )
1186	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1187	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1188
1189	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1190
1191	idx_bdy(ib_bdy)%flagu(:,:) = 0._wp
1192	idx_bdy(ib_bdy)%flagv(:,:) = 0._wp
1193	icount = 0
1194
1195	! Calculate relationship of U direction to the local orientation of the boundary
1196	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1197	! flagu = 0 : u is tangential
1198	! flagu = 1 : u is normal to the boundary and is direction is inward
1199
1200	DO igrd = 1,jpbgrd
1201	SELECT CASE( igrd )
1202	CASE( 1 ) ; pmask => umask (:,:,1) ; i_offset = 0
1203	CASE( 2 ) ; pmask => bdytmask(:,:) ; i_offset = 1
1204	CASE( 3 ) ; pmask => zfmask (:,:) ; i_offset = 0
1205	END SELECT
1206	icount = 0
1207	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1208	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1209	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1210	zefl = pmask(nbi+i_offset-1,nbj)
1211	zwfl = pmask(nbi+i_offset,nbj)
1212	! This error check only works if you are using the bdyXmask arrays
1213	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1214	icount = icount + 1
1215	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1216	ELSE
1217	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1218	ENDIF
1219	END DO
1220	IF( icount /= 0 ) THEN
1221	IF(lwp) WRITE(numout,*)
1222	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1223	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1224	IF(lwp) WRITE(numout,*) ' ========== '
1225	IF(lwp) WRITE(numout,*)
1226	nstop = nstop + 1
1227	ENDIF
1228	END DO
1229
1230	! Calculate relationship of V direction to the local orientation of the boundary
1231	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1232	! flagv = 0 : v is tangential
1233	! flagv = 1 : v is normal to the boundary and is direction is inward
1234
1235	DO igrd = 1, jpbgrd
1236	SELECT CASE( igrd )
1237	CASE( 1 ) ; pmask => vmask (:,:,1) ; j_offset = 0
1238	CASE( 2 ) ; pmask => zfmask(:,:) ; j_offset = 0
1239	CASE( 3 ) ; pmask => bdytmask ; j_offset = 1
1240	END SELECT
1241	icount = 0
1242	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1243	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1244	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1245	znfl = pmask(nbi,nbj+j_offset-1)
1246	zsfl = pmask(nbi,nbj+j_offset )
1247	! This error check only works if you are using the bdyXmask arrays
1248	IF( j_offset == 1 .and. znfl + zsfl == 2 ) THEN
1249	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1250	icount = icount + 1
1251	ELSE
1252	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1253	END IF
1254	END DO
1255	IF( icount /= 0 ) THEN
1256	IF(lwp) WRITE(numout,*)
1257	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1258	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1259	IF(lwp) WRITE(numout,*) ' ========== '
1260	IF(lwp) WRITE(numout,*)
1261	nstop = nstop + 1
1262	ENDIF
1263	END DO
1264	!
1265	END DO
1266
1267	! Compute total lateral surface for volume correction:
1268	! ----------------------------------------------------
1269	! JC: this must be done at each time step with non-linear free surface
1270	bdysurftot = 0._wp
1271	IF( ln_vol ) THEN
1272	igrd = 2 ! Lateral surface at U-points
1273	DO ib_bdy = 1, nb_bdy
1274	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1275	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1276	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1277	flagu => idx_bdy(ib_bdy)%flagu(ib,igrd)
1278	bdysurftot = bdysurftot + hu_n (nbi , nbj) &
1279	& * e2u (nbi , nbj) * ABS( flagu ) &
1280	& * tmask_i(nbi , nbj) &
1281	& * tmask_i(nbi+1, nbj)
1282	END DO
1283	END DO
1284
1285	igrd=3 ! Add lateral surface at V-points
1286	DO ib_bdy = 1, nb_bdy
1287	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1288	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1289	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1290	flagv => idx_bdy(ib_bdy)%flagv(ib,igrd)
1291	bdysurftot = bdysurftot + hv_n (nbi, nbj ) &
1292	& * e1v (nbi, nbj ) * ABS( flagv ) &
1293	& * tmask_i(nbi, nbj ) &
1294	& * tmask_i(nbi, nbj+1)
1295	END DO
1296	END DO
1297	!
1298	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
1299	END IF
1300	!
1301	! Tidy up
1302	!--------
1303	IF( nb_bdy>0 ) DEALLOCATE( nbidta, nbjdta, nbrdta )
1304	!
1305	CALL wrk_dealloc(jpi,jpj, zfmask )
1306	!
1307	! Open boundaries initialisation of external data arrays
1308	CALL bdy_dta_init
1309	!
1310	! Open boundaries initialisation of tidal harmonic forcing
1311	IF( lk_tide ) CALL bdytide_init
1312
1313	!
1314	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1315	!
1316	END SUBROUTINE bdy_init
1317
1318
1319	SUBROUTINE bdy_ctl_seg
1320	!!----------------------------------------------------------------------
1321	!! * ROUTINE bdy_ctl_seg *
1322	!!
1323	!! ** Purpose : Check straight open boundary segments location
1324	!!
1325	!! ** Method : - Look for open boundary corners
1326	!! - Check that segments start or end on land
1327	!!----------------------------------------------------------------------
1328	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1329	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1330	REAL(wp), DIMENSION(2) :: ztestmask
1331	!!----------------------------------------------------------------------
1332	!
1333	IF (lwp) WRITE(numout,*) ' '
1334	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1335	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1336	!
1337	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1338	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1339	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1340	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1341	! 1. Check bounds
1342	!----------------
1343	DO ib = 1, nbdysegn
1344	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1345	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1346	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1347	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1348	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1349	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1350	END DO
1351	!
1352	DO ib = 1, nbdysegs
1353	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1354	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1355	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1356	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1357	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1358	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1359	END DO
1360	!
1361	DO ib = 1, nbdysege
1362	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1363	IF ((jpieob(ib).ge.jpiglo-1).or.&
1364	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1365	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1366	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1367	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1368	END DO
1369	!
1370	DO ib = 1, nbdysegw
1371	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1372	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1373	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1374	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1375	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1376	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1377	ENDDO
1378	!
1379	!
1380	! 2. Look for segment crossings
1381	!------------------------------
1382	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1383	!
1384	itest = 0 ! corner number
1385	!
1386	! flag to detect if start or end of open boundary belongs to a corner
1387	! if not (=0), it must be on land.
1388	! if a corner is detected, save bdy package number for further tests
1389	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1390	! South/West crossings
1391	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1392	DO ib1 = 1, nbdysegw
1393	DO ib2 = 1, nbdysegs
1394	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1395	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1396	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1397	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1398	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1399	! We have a possible South-West corner
1400	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1401	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1402	icornw(ib1,1) = npckgs(ib2)
1403	icorns(ib2,1) = npckgw(ib1)
1404	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1405	IF(lwp) WRITE(numout,*)
1406	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1407	& jpisft(ib2), jpjwft(ib1)
1408	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1409	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1410	& ' and South segment: ',npckgs(ib2)
1411	IF(lwp) WRITE(numout,*)
1412	nstop = nstop + 1
1413	ELSE
1414	IF(lwp) WRITE(numout,*)
1415	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
1416	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1417	& ' and South segment: ',npckgs(ib2)
1418	IF(lwp) WRITE(numout,*)
1419	nstop = nstop+1
1420	END IF
1421	END IF
1422	END DO
1423	END DO
1424	END IF
1425	!
1426	! South/East crossings
1427	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1428	DO ib1 = 1, nbdysege
1429	DO ib2 = 1, nbdysegs
1430	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1431	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1432	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1433	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1434	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1435	! We have a possible South-East corner
1436	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1437	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1438	icorne(ib1,1) = npckgs(ib2)
1439	icorns(ib2,2) = npckge(ib1)
1440	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1441	IF(lwp) WRITE(numout,*)
1442	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1443	& jpisdt(ib2), jpjeft(ib1)
1444	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1445	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1446	& ' and South segment: ',npckgs(ib2)
1447	IF(lwp) WRITE(numout,*)
1448	nstop = nstop + 1
1449	ELSE
1450	IF(lwp) WRITE(numout,*)
1451	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
1452	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1453	& ' and South segment: ',npckgs(ib2)
1454	IF(lwp) WRITE(numout,*)
1455	nstop = nstop + 1
1456	END IF
1457	END IF
1458	END DO
1459	END DO
1460	END IF
1461	!
1462	! North/West crossings
1463	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1464	DO ib1 = 1, nbdysegw
1465	DO ib2 = 1, nbdysegn
1466	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1467	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1468	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1469	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1470	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1471	! We have a possible North-West corner
1472	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1473	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1474	icornw(ib1,2) = npckgn(ib2)
1475	icornn(ib2,1) = npckgw(ib1)
1476	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1477	IF(lwp) WRITE(numout,*)
1478	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1479	& jpinft(ib2), jpjwdt(ib1)
1480	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1481	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1482	& ' and North segment: ',npckgn(ib2)
1483	IF(lwp) WRITE(numout,*)
1484	nstop = nstop + 1
1485	ELSE
1486	IF(lwp) WRITE(numout,*)
1487	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1488	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1489	& ' and North segment: ',npckgn(ib2)
1490	IF(lwp) WRITE(numout,*)
1491	nstop = nstop + 1
1492	END IF
1493	END IF
1494	END DO
1495	END DO
1496	END IF
1497	!
1498	! North/East crossings
1499	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1500	DO ib1 = 1, nbdysege
1501	DO ib2 = 1, nbdysegn
1502	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1503	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1504	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1505	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1506	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1507	! We have a possible North-East corner
1508	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1509	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1510	icorne(ib1,2) = npckgn(ib2)
1511	icornn(ib2,2) = npckge(ib1)
1512	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1513	IF(lwp) WRITE(numout,*)
1514	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1515	& jpindt(ib2), jpjedt(ib1)
1516	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1517	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1518	& ' and North segment: ',npckgn(ib2)
1519	IF(lwp) WRITE(numout,*)
1520	nstop = nstop + 1
1521	ELSE
1522	IF(lwp) WRITE(numout,*)
1523	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1524	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1525	& ' and North segment: ',npckgn(ib2)
1526	IF(lwp) WRITE(numout,*)
1527	nstop = nstop + 1
1528	END IF
1529	END IF
1530	END DO
1531	END DO
1532	END IF
1533	!
1534	! 3. Check if segment extremities are on land
1535	!--------------------------------------------
1536	!
1537	! West segments
1538	DO ib = 1, nbdysegw
1539	! get mask at boundary extremities:
1540	ztestmask(1:2)=0.
1541	DO ji = 1, jpi
1542	DO jj = 1, jpj
1543	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1544	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1545	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1546	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1547	END DO
1548	END DO
1549	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1550
1551	IF (ztestmask(1)==1) THEN
1552	IF (icornw(ib,1)==0) THEN
1553	IF(lwp) WRITE(numout,*)
1554	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1555	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1556	IF(lwp) WRITE(numout,*)
1557	nstop = nstop + 1
1558	ELSE
1559	! This is a corner
1560	IF(lwp) WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1561	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1562	itest=itest+1
1563	ENDIF
1564	ENDIF
1565	IF (ztestmask(2)==1) THEN
1566	IF (icornw(ib,2)==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 end on land or on a corner'
1570	IF(lwp) WRITE(numout,*)
1571	nstop = nstop + 1
1572	ELSE
1573	! This is a corner
1574	IF(lwp) WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1575	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1576	itest=itest+1
1577	ENDIF
1578	ENDIF
1579	END DO
1580	!
1581	! East segments
1582	DO ib = 1, nbdysege
1583	! get mask at boundary extremities:
1584	ztestmask(1:2)=0.
1585	DO ji = 1, jpi
1586	DO jj = 1, jpj
1587	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1588	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1589	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1590	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1591	END DO
1592	END DO
1593	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1594
1595	IF (ztestmask(1)==1) THEN
1596	IF (icorne(ib,1)==0) THEN
1597	IF(lwp) WRITE(numout,*)
1598	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1599	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1600	IF(lwp) WRITE(numout,*)
1601	nstop = nstop + 1
1602	ELSE
1603	! This is a corner
1604	IF(lwp) WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1605	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1606	itest=itest+1
1607	ENDIF
1608	ENDIF
1609	IF (ztestmask(2)==1) THEN
1610	IF (icorne(ib,2)==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 end on land or on a corner'
1614	IF(lwp) WRITE(numout,*)
1615	nstop = nstop + 1
1616	ELSE
1617	! This is a corner
1618	IF(lwp) WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1619	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1620	itest=itest+1
1621	ENDIF
1622	ENDIF
1623	END DO
1624	!
1625	! South segments
1626	DO ib = 1, nbdysegs
1627	! get mask at boundary extremities:
1628	ztestmask(1:2)=0.
1629	DO ji = 1, jpi
1630	DO jj = 1, jpj
1631	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1632	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1633	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1634	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1635	END DO
1636	END DO
1637	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1638
1639	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1640	IF(lwp) WRITE(numout,*)
1641	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1642	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1643	IF(lwp) WRITE(numout,*)
1644	nstop = nstop + 1
1645	ENDIF
1646	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1647	IF(lwp) WRITE(numout,*)
1648	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1649	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1650	IF(lwp) WRITE(numout,*)
1651	nstop = nstop + 1
1652	ENDIF
1653	END DO
1654	!
1655	! North segments
1656	DO ib = 1, nbdysegn
1657	! get mask at boundary extremities:
1658	ztestmask(1:2)=0.
1659	DO ji = 1, jpi
1660	DO jj = 1, jpj
1661	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1662	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1663	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1664	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1665	END DO
1666	END DO
1667	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1668
1669	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1670	IF(lwp) WRITE(numout,*)
1671	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1672	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1673	IF(lwp) WRITE(numout,*)
1674	nstop = nstop + 1
1675	ENDIF
1676	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1677	IF(lwp) WRITE(numout,*)
1678	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1679	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1680	IF(lwp) WRITE(numout,*)
1681	nstop = nstop + 1
1682	ENDIF
1683	END DO
1684	!
1685	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1686	!
1687	! Other tests TBD:
1688	! segments completly on land
1689	! optimized open boundary array length according to landmask
1690	! Nudging layers that overlap with interior domain
1691	!
1692	END SUBROUTINE bdy_ctl_seg
1693
1694	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1695	!!----------------------------------------------------------------------
1696	!! * ROUTINE bdy_ctl_corn *
1697	!!
1698	!! ** Purpose : Check numerical schemes consistency between
1699	!! segments having a common corner
1700	!!
1701	!! ** Method :
1702	!!----------------------------------------------------------------------
1703	INTEGER, INTENT(in) :: ib1, ib2
1704	INTEGER :: itest
1705	!!----------------------------------------------------------------------
1706	itest = 0
1707
1708	IF( cn_dyn2d(ib1) /= cn_dyn2d(ib2) ) itest = itest + 1
1709	IF( cn_dyn3d(ib1) /= cn_dyn3d(ib2) ) itest = itest + 1
1710	IF( cn_tra (ib1) /= cn_tra (ib2) ) itest = itest + 1
1711	!
1712	IF( nn_dyn2d_dta(ib1) /= nn_dyn2d_dta(ib2) ) itest = itest + 1
1713	IF( nn_dyn3d_dta(ib1) /= nn_dyn3d_dta(ib2) ) itest = itest + 1
1714	IF( nn_tra_dta (ib1) /= nn_tra_dta (ib2) ) itest = itest + 1
1715	!
1716	IF( nn_rimwidth(ib1) /= nn_rimwidth(ib2) ) itest = itest + 1
1717	!
1718	IF( itest>0 ) THEN
1719	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1720	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1721	IF(lwp) WRITE(numout,*)
1722	nstop = nstop + 1
1723	ENDIF
1724	!
1725	END SUBROUTINE bdy_ctl_corn
1726
1727	!!=================================================================================
1728	END MODULE bdyini

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