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bdyini.F90 in branches/UKMO/r6232_HZG_WAVE/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

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source: branches/UKMO/r6232_HZG_WAVE/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 7807

Last change on this file since 7807 was 7807, checked in by jcastill, 7 years ago
Changes as in HZG wave forcing branch, but adapted to r6232
Property svn:keywords set to `Id`
File size: 82.8 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 :: iwe, ies, iso, ino, 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	& cn_ice_lim, nn_ice_lim_dta, &
103	& rn_ice_tem, rn_ice_sal, rn_ice_age, &
104	& ln_vol, nn_volctl, nn_rimwidth
105	!!
106	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
107	INTEGER :: ios ! Local integer output status for namelist read
108	!!----------------------------------------------------------------------
109
110	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
111
112	IF(lwp) WRITE(numout,*)
113	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
114	IF(lwp) WRITE(numout,*) '~~~~~~~~'
115	!
116
117	IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
118	& ' and general open boundary condition are not compatible' )
119
120	cgrid= (/'t','u','v'/)
121
122	! ------------------------
123	! Read namelist parameters
124	! ------------------------
125
126	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
127	READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 901)
128	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp )
129
130	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
131	READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 902 )
132	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp )
133	IF(lwm) WRITE ( numond, nambdy )
134
135	! -----------------------------------------
136	! Check and write out namelist parameters
137	! -----------------------------------------
138	! ! control prints
139	IF(lwp) WRITE(numout,*) ' nambdy'
140
141	IF( nb_bdy .eq. 0 ) THEN
142	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
143	ELSE
144	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ',nb_bdy
145	ENDIF
146
147	DO ib_bdy = 1,nb_bdy
148	IF(lwp) WRITE(numout,*) ' '
149	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
150
151	IF( ln_coords_file(ib_bdy) ) THEN
152	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
153	ELSE
154	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
155	ENDIF
156	IF(lwp) WRITE(numout,*)
157
158	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
159	SELECT CASE( cn_dyn2d(ib_bdy) )
160	CASE('none')
161	IF(lwp) WRITE(numout,*) ' no open boundary condition'
162	dta_bdy(ib_bdy)%ll_ssh = .false.
163	dta_bdy(ib_bdy)%ll_u2d = .false.
164	dta_bdy(ib_bdy)%ll_v2d = .false.
165	CASE('frs')
166	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
167	dta_bdy(ib_bdy)%ll_ssh = .false.
168	dta_bdy(ib_bdy)%ll_u2d = .true.
169	dta_bdy(ib_bdy)%ll_v2d = .true.
170	CASE('flather')
171	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
172	dta_bdy(ib_bdy)%ll_ssh = .true.
173	dta_bdy(ib_bdy)%ll_u2d = .true.
174	dta_bdy(ib_bdy)%ll_v2d = .true.
175	CASE('orlanski')
176	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
177	dta_bdy(ib_bdy)%ll_ssh = .false.
178	dta_bdy(ib_bdy)%ll_u2d = .true.
179	dta_bdy(ib_bdy)%ll_v2d = .true.
180	CASE('orlanski_npo')
181	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
182	dta_bdy(ib_bdy)%ll_ssh = .false.
183	dta_bdy(ib_bdy)%ll_u2d = .true.
184	dta_bdy(ib_bdy)%ll_v2d = .true.
185	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
186	END SELECT
187	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
188	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
189	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
190	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
191	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
192	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
193	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
194	END SELECT
195	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
196	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
197	ENDIF
198	ENDIF
199	IF(lwp) WRITE(numout,*)
200
201	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
202	SELECT CASE( cn_dyn3d(ib_bdy) )
203	CASE('none')
204	IF(lwp) WRITE(numout,*) ' no open boundary condition'
205	dta_bdy(ib_bdy)%ll_u3d = .false.
206	dta_bdy(ib_bdy)%ll_v3d = .false.
207	CASE('frs')
208	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
209	dta_bdy(ib_bdy)%ll_u3d = .true.
210	dta_bdy(ib_bdy)%ll_v3d = .true.
211	CASE('specified')
212	IF(lwp) WRITE(numout,*) ' Specified value'
213	dta_bdy(ib_bdy)%ll_u3d = .true.
214	dta_bdy(ib_bdy)%ll_v3d = .true.
215	CASE('zero')
216	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
217	dta_bdy(ib_bdy)%ll_u3d = .false.
218	dta_bdy(ib_bdy)%ll_v3d = .false.
219	CASE('orlanski')
220	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
221	dta_bdy(ib_bdy)%ll_u3d = .true.
222	dta_bdy(ib_bdy)%ll_v3d = .true.
223	CASE('orlanski_npo')
224	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
225	dta_bdy(ib_bdy)%ll_u3d = .true.
226	dta_bdy(ib_bdy)%ll_v3d = .true.
227	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
228	END SELECT
229	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
230	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
231	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
232	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
233	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
234	END SELECT
235	ENDIF
236
237	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
238	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
239	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
240	ln_dyn3d_dmp(ib_bdy)=.false.
241	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
242	CALL ctl_stop( 'Use FRS OR relaxation' )
243	ELSE
244	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
245	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
246	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
247	dta_bdy(ib_bdy)%ll_u3d = .true.
248	dta_bdy(ib_bdy)%ll_v3d = .true.
249	ENDIF
250	ELSE
251	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
252	ENDIF
253	IF(lwp) WRITE(numout,*)
254
255	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
256	SELECT CASE( cn_tra(ib_bdy) )
257	CASE('none')
258	IF(lwp) WRITE(numout,*) ' no open boundary condition'
259	dta_bdy(ib_bdy)%ll_tem = .false.
260	dta_bdy(ib_bdy)%ll_sal = .false.
261	CASE('frs')
262	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
263	dta_bdy(ib_bdy)%ll_tem = .true.
264	dta_bdy(ib_bdy)%ll_sal = .true.
265	CASE('specified')
266	IF(lwp) WRITE(numout,*) ' Specified value'
267	dta_bdy(ib_bdy)%ll_tem = .true.
268	dta_bdy(ib_bdy)%ll_sal = .true.
269	CASE('neumann')
270	IF(lwp) WRITE(numout,*) ' Neumann conditions'
271	dta_bdy(ib_bdy)%ll_tem = .false.
272	dta_bdy(ib_bdy)%ll_sal = .false.
273	CASE('runoff')
274	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
275	dta_bdy(ib_bdy)%ll_tem = .false.
276	dta_bdy(ib_bdy)%ll_sal = .false.
277	CASE('orlanski')
278	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
279	dta_bdy(ib_bdy)%ll_tem = .true.
280	dta_bdy(ib_bdy)%ll_sal = .true.
281	CASE('orlanski_npo')
282	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
283	dta_bdy(ib_bdy)%ll_tem = .true.
284	dta_bdy(ib_bdy)%ll_sal = .true.
285	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
286	END SELECT
287	IF( cn_tra(ib_bdy) /= 'none' ) THEN
288	SELECT CASE( nn_tra_dta(ib_bdy) ) !
289	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
290	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
291	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
292	END SELECT
293	ENDIF
294
295	IF ( ln_tra_dmp(ib_bdy) ) THEN
296	IF ( cn_tra(ib_bdy) == 'none' ) THEN
297	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
298	ln_tra_dmp(ib_bdy)=.false.
299	ELSE
300	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
301	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
302	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
303	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
304	dta_bdy(ib_bdy)%ll_tem = .true.
305	dta_bdy(ib_bdy)%ll_sal = .true.
306	ENDIF
307	ELSE
308	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
309	ENDIF
310	IF(lwp) WRITE(numout,*)
311
312	#if defined key_lim2
313	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
314	SELECT CASE( cn_ice_lim(ib_bdy) )
315	CASE('none')
316	IF(lwp) WRITE(numout,*) ' no open boundary condition'
317	dta_bdy(ib_bdy)%ll_frld = .false.
318	dta_bdy(ib_bdy)%ll_hicif = .false.
319	dta_bdy(ib_bdy)%ll_hsnif = .false.
320	CASE('frs')
321	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
322	dta_bdy(ib_bdy)%ll_frld = .true.
323	dta_bdy(ib_bdy)%ll_hicif = .true.
324	dta_bdy(ib_bdy)%ll_hsnif = .true.
325	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
326	END SELECT
327	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
328	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
329	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
330	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
331	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
332	END SELECT
333	ENDIF
334	IF(lwp) WRITE(numout,*)
335	#elif defined key_lim3
336	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
337	SELECT CASE( cn_ice_lim(ib_bdy) )
338	CASE('none')
339	IF(lwp) WRITE(numout,*) ' no open boundary condition'
340	dta_bdy(ib_bdy)%ll_a_i = .false.
341	dta_bdy(ib_bdy)%ll_ht_i = .false.
342	dta_bdy(ib_bdy)%ll_ht_s = .false.
343	CASE('frs')
344	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
345	dta_bdy(ib_bdy)%ll_a_i = .true.
346	dta_bdy(ib_bdy)%ll_ht_i = .true.
347	dta_bdy(ib_bdy)%ll_ht_s = .true.
348	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
349	END SELECT
350	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
351	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
352	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
353	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
354	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
355	END SELECT
356	ENDIF
357	IF(lwp) WRITE(numout,*)
358	IF(lwp) WRITE(numout,*) ' tem of bdy sea-ice = ', rn_ice_tem(ib_bdy)
359	IF(lwp) WRITE(numout,*) ' sal of bdy sea-ice = ', rn_ice_sal(ib_bdy)
360	IF(lwp) WRITE(numout,*) ' age of bdy sea-ice = ', rn_ice_age(ib_bdy)
361	#endif
362
363	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
364	IF(lwp) WRITE(numout,*)
365
366	ENDDO
367
368	IF (nb_bdy .gt. 0) THEN
369	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
370	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
371	IF(lwp) WRITE(numout,*)
372	SELECT CASE ( nn_volctl )
373	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
374	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
375	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
376	END SELECT
377	IF(lwp) WRITE(numout,*)
378	ELSE
379	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
380	IF(lwp) WRITE(numout,*)
381	ENDIF
382	ENDIF
383
384	! -------------------------------------------------
385	! Initialise indices arrays for open boundaries
386	! -------------------------------------------------
387
388	! Work out global dimensions of boundary data
389	! ---------------------------------------------
390	REWIND( numnam_cfg )
391
392	!!----------------------------------------------------------------------
393
394
395
396	nblendta(:,:) = 0
397	nbdysege = 0
398	nbdysegw = 0
399	nbdysegn = 0
400	nbdysegs = 0
401	icount = 0 ! count user defined segments
402	! Dimensions below are used to allocate arrays to read external data
403	jpbdtas = 1 ! Maximum size of boundary data (structured case)
404	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
405
406	DO ib_bdy = 1, nb_bdy
407
408	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
409
410	icount = icount + 1
411	! No REWIND here because may need to read more than one nambdy_index namelist.
412	! Read only namelist_cfg to avoid unseccessfull overwrite
413	!! REWIND( numnam_ref ) ! Namelist nambdy_index in reference namelist : Open boundaries indexes
414	!! READ ( numnam_ref, namrun, IOSTAT = ios, ERR = 903)
415	!!903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in reference namelist', lwp )
416
417	!! REWIND( numnam_cfg ) ! Namelist nambdy_index in configuration namelist : Open boundaries indexes
418	READ ( numnam_cfg, nambdy_index, IOSTAT = ios, ERR = 904 )
419	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in configuration namelist', lwp )
420	IF(lwm) WRITE ( numond, nambdy_index )
421
422	SELECT CASE ( TRIM(ctypebdy) )
423	CASE( 'N' )
424	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
425	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
426	nbdybeg = 2
427	nbdyend = jpiglo - 1
428	ENDIF
429	nbdysegn = nbdysegn + 1
430	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
431	jpjnob(nbdysegn) = nbdyind
432	jpindt(nbdysegn) = nbdybeg
433	jpinft(nbdysegn) = nbdyend
434	!
435	CASE( 'S' )
436	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
437	nbdyind = 2 ! set boundary to whole side of model domain.
438	nbdybeg = 2
439	nbdyend = jpiglo - 1
440	ENDIF
441	nbdysegs = nbdysegs + 1
442	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
443	jpjsob(nbdysegs) = nbdyind
444	jpisdt(nbdysegs) = nbdybeg
445	jpisft(nbdysegs) = nbdyend
446	!
447	CASE( 'E' )
448	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
449	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
450	nbdybeg = 2
451	nbdyend = jpjglo - 1
452	ENDIF
453	nbdysege = nbdysege + 1
454	npckge(nbdysege) = ib_bdy ! Save bdy package number
455	jpieob(nbdysege) = nbdyind
456	jpjedt(nbdysege) = nbdybeg
457	jpjeft(nbdysege) = nbdyend
458	!
459	CASE( 'W' )
460	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
461	nbdyind = 2 ! set boundary to whole side of model domain.
462	nbdybeg = 2
463	nbdyend = jpjglo - 1
464	ENDIF
465	nbdysegw = nbdysegw + 1
466	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
467	jpiwob(nbdysegw) = nbdyind
468	jpjwdt(nbdysegw) = nbdybeg
469	jpjwft(nbdysegw) = nbdyend
470	!
471	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
472	END SELECT
473
474	! For simplicity we assume that in case of straight bdy, arrays have the same length
475	! (even if it is true that last tangential velocity points
476	! are useless). This simplifies a little bit boundary data format (and agrees with format
477	! used so far in obc package)
478
479	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
480	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
481	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
482	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
483
484	ELSE ! Read size of arrays in boundary coordinates file.
485	CALL iom_open( cn_coords_file(ib_bdy), inum )
486	DO igrd = 1, jpbgrd
487	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
488	!clem nblendta(igrd,ib_bdy) = kdimsz(1)
489	!clem jpbdtau = MAX(jpbdtau, kdimsz(1))
490	nblendta(igrd,ib_bdy) = MAXVAL(kdimsz)
491	jpbdtau = MAX(jpbdtau, MAXVAL(kdimsz))
492	ENDDO
493	CALL iom_close( inum )
494
495	ENDIF
496
497	ENDDO ! ib_bdy
498
499	IF (nb_bdy>0) THEN
500	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
501
502	! Allocate arrays
503	!---------------
504	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
505	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
506
507	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
508	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
509	!
510	ENDIF
511
512	! Now look for crossings in user (namelist) defined open boundary segments:
513	!--------------------------------------------------------------------------
514	IF ( icount>0 ) CALL bdy_ctl_seg
515
516	! Calculate global boundary index arrays or read in from file
517	!------------------------------------------------------------
518	! 1. Read global index arrays from boundary coordinates file.
519	DO ib_bdy = 1, nb_bdy
520
521	IF( ln_coords_file(ib_bdy) ) THEN
522
523	CALL iom_open( cn_coords_file(ib_bdy), inum )
524	DO igrd = 1, jpbgrd
525	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
526	DO ii = 1,nblendta(igrd,ib_bdy)
527	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
528	END DO
529	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
530	DO ii = 1,nblendta(igrd,ib_bdy)
531	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
532	END DO
533	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
534	DO ii = 1,nblendta(igrd,ib_bdy)
535	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
536	END DO
537
538	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
539	IF(lwp) WRITE(numout,*)
540	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
541	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
542	IF (ibr_max < nn_rimwidth(ib_bdy)) &
543	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
544	END DO
545	CALL iom_close( inum )
546
547	ENDIF
548
549	ENDDO
550
551	! 2. Now fill indices corresponding to straight open boundary arrays:
552	! East
553	!-----
554	DO iseg = 1, nbdysege
555	ib_bdy = npckge(iseg)
556	!
557	! ------------ T points -------------
558	igrd=1
559	icount=0
560	DO ir = 1, nn_rimwidth(ib_bdy)
561	DO ij = jpjedt(iseg), jpjeft(iseg)
562	icount = icount + 1
563	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
564	nbjdta(icount, igrd, ib_bdy) = ij
565	nbrdta(icount, igrd, ib_bdy) = ir
566	ENDDO
567	ENDDO
568	!
569	! ------------ U points -------------
570	igrd=2
571	icount=0
572	DO ir = 1, nn_rimwidth(ib_bdy)
573	DO ij = jpjedt(iseg), jpjeft(iseg)
574	icount = icount + 1
575	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
576	nbjdta(icount, igrd, ib_bdy) = ij
577	nbrdta(icount, igrd, ib_bdy) = ir
578	ENDDO
579	ENDDO
580	!
581	! ------------ V points -------------
582	igrd=3
583	icount=0
584	DO ir = 1, nn_rimwidth(ib_bdy)
585	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
586	DO ij = jpjedt(iseg), jpjeft(iseg)
587	icount = icount + 1
588	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
589	nbjdta(icount, igrd, ib_bdy) = ij
590	nbrdta(icount, igrd, ib_bdy) = ir
591	ENDDO
592	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
593	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
594	ENDDO
595	ENDDO
596	!
597	! West
598	!-----
599	DO iseg = 1, nbdysegw
600	ib_bdy = npckgw(iseg)
601	!
602	! ------------ T points -------------
603	igrd=1
604	icount=0
605	DO ir = 1, nn_rimwidth(ib_bdy)
606	DO ij = jpjwdt(iseg), jpjwft(iseg)
607	icount = icount + 1
608	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
609	nbjdta(icount, igrd, ib_bdy) = ij
610	nbrdta(icount, igrd, ib_bdy) = ir
611	ENDDO
612	ENDDO
613	!
614	! ------------ U points -------------
615	igrd=2
616	icount=0
617	DO ir = 1, nn_rimwidth(ib_bdy)
618	DO ij = jpjwdt(iseg), jpjwft(iseg)
619	icount = icount + 1
620	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
621	nbjdta(icount, igrd, ib_bdy) = ij
622	nbrdta(icount, igrd, ib_bdy) = ir
623	ENDDO
624	ENDDO
625	!
626	! ------------ V points -------------
627	igrd=3
628	icount=0
629	DO ir = 1, nn_rimwidth(ib_bdy)
630	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
631	DO ij = jpjwdt(iseg), jpjwft(iseg)
632	icount = icount + 1
633	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
634	nbjdta(icount, igrd, ib_bdy) = ij
635	nbrdta(icount, igrd, ib_bdy) = ir
636	ENDDO
637	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
638	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
639	ENDDO
640	ENDDO
641	!
642	! North
643	!-----
644	DO iseg = 1, nbdysegn
645	ib_bdy = npckgn(iseg)
646	!
647	! ------------ T points -------------
648	igrd=1
649	icount=0
650	DO ir = 1, nn_rimwidth(ib_bdy)
651	DO ii = jpindt(iseg), jpinft(iseg)
652	icount = icount + 1
653	nbidta(icount, igrd, ib_bdy) = ii
654	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
655	nbrdta(icount, igrd, ib_bdy) = ir
656	ENDDO
657	ENDDO
658	!
659	! ------------ U points -------------
660	igrd=2
661	icount=0
662	DO ir = 1, nn_rimwidth(ib_bdy)
663	! DO ii = jpindt(iseg), jpinft(iseg) - 1
664	DO ii = jpindt(iseg), jpinft(iseg)
665	icount = icount + 1
666	nbidta(icount, igrd, ib_bdy) = ii
667	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
668	nbrdta(icount, igrd, ib_bdy) = ir
669	ENDDO
670	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
671	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
672	ENDDO
673	!
674	! ------------ V points -------------
675	igrd=3
676	icount=0
677	DO ir = 1, nn_rimwidth(ib_bdy)
678	DO ii = jpindt(iseg), jpinft(iseg)
679	icount = icount + 1
680	nbidta(icount, igrd, ib_bdy) = ii
681	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
682	nbrdta(icount, igrd, ib_bdy) = ir
683	ENDDO
684	ENDDO
685	ENDDO
686	!
687	! South
688	!-----
689	DO iseg = 1, nbdysegs
690	ib_bdy = npckgs(iseg)
691	!
692	! ------------ T points -------------
693	igrd=1
694	icount=0
695	DO ir = 1, nn_rimwidth(ib_bdy)
696	DO ii = jpisdt(iseg), jpisft(iseg)
697	icount = icount + 1
698	nbidta(icount, igrd, ib_bdy) = ii
699	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
700	nbrdta(icount, igrd, ib_bdy) = ir
701	ENDDO
702	ENDDO
703	!
704	! ------------ U points -------------
705	igrd=2
706	icount=0
707	DO ir = 1, nn_rimwidth(ib_bdy)
708	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
709	DO ii = jpisdt(iseg), jpisft(iseg)
710	icount = icount + 1
711	nbidta(icount, igrd, ib_bdy) = ii
712	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
713	nbrdta(icount, igrd, ib_bdy) = ir
714	ENDDO
715	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
716	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
717	ENDDO
718	!
719	! ------------ V points -------------
720	igrd=3
721	icount=0
722	DO ir = 1, nn_rimwidth(ib_bdy)
723	DO ii = jpisdt(iseg), jpisft(iseg)
724	icount = icount + 1
725	nbidta(icount, igrd, ib_bdy) = ii
726	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
727	nbrdta(icount, igrd, ib_bdy) = ir
728	ENDDO
729	ENDDO
730	ENDDO
731
732	! Deal with duplicated points
733	!-----------------------------
734	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
735	! if their distance to the bdy is greater than the other
736	! If their distance are the same, just keep only one to avoid updating a point twice
737	DO igrd = 1, jpbgrd
738	DO ib_bdy1 = 1, nb_bdy
739	DO ib_bdy2 = 1, nb_bdy
740	IF (ib_bdy1/=ib_bdy2) THEN
741	DO ib1 = 1, nblendta(igrd,ib_bdy1)
742	DO ib2 = 1, nblendta(igrd,ib_bdy2)
743	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
744	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
745	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
746	! & nbidta(ib1, igrd, ib_bdy1), &
747	! & nbjdta(ib2, igrd, ib_bdy2)
748	! keep only points with the lowest distance to boundary:
749	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
750	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
751	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
752	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
753	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
754	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
755	! Arbitrary choice if distances are the same:
756	ELSE
757	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
758	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
759	ENDIF
760	END IF
761	END DO
762	END DO
763	ENDIF
764	END DO
765	END DO
766	END DO
767
768	! Work out dimensions of boundary data on each processor
769	! ------------------------------------------------------
770
771	! Rather assume that boundary data indices are given on global domain
772	! TO BE DISCUSSED ?
773	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
774	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
775	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
776	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
777	iwe = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
778	ies = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
779	iso = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
780	ino = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
781
782	ALLOCATE( nbondi_bdy(nb_bdy))
783	ALLOCATE( nbondj_bdy(nb_bdy))
784	nbondi_bdy(:)=2
785	nbondj_bdy(:)=2
786	ALLOCATE( nbondi_bdy_b(nb_bdy))
787	ALLOCATE( nbondj_bdy_b(nb_bdy))
788	nbondi_bdy_b(:)=2
789	nbondj_bdy_b(:)=2
790
791	! Work out dimensions of boundary data on each neighbour process
792	IF(nbondi .eq. 0) THEN
793	iw_b(1) = jpizoom + nimppt(nowe+1)
794	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
795	is_b(1) = jpjzoom + njmppt(nowe+1)
796	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
797
798	iw_b(2) = jpizoom + nimppt(noea+1)
799	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
800	is_b(2) = jpjzoom + njmppt(noea+1)
801	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
802	ELSEIF(nbondi .eq. 1) THEN
803	iw_b(1) = jpizoom + nimppt(nowe+1)
804	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
805	is_b(1) = jpjzoom + njmppt(nowe+1)
806	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
807	ELSEIF(nbondi .eq. -1) THEN
808	iw_b(2) = jpizoom + nimppt(noea+1)
809	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
810	is_b(2) = jpjzoom + njmppt(noea+1)
811	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
812	ENDIF
813
814	IF(nbondj .eq. 0) THEN
815	iw_b(3) = jpizoom + nimppt(noso+1)
816	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
817	is_b(3) = jpjzoom + njmppt(noso+1)
818	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
819
820	iw_b(4) = jpizoom + nimppt(nono+1)
821	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
822	is_b(4) = jpjzoom + njmppt(nono+1)
823	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
824	ELSEIF(nbondj .eq. 1) THEN
825	iw_b(3) = jpizoom + nimppt(noso+1)
826	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
827	is_b(3) = jpjzoom + njmppt(noso+1)
828	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
829	ELSEIF(nbondj .eq. -1) THEN
830	iw_b(4) = jpizoom + nimppt(nono+1)
831	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
832	is_b(4) = jpjzoom + njmppt(nono+1)
833	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
834	ENDIF
835
836	DO ib_bdy = 1, nb_bdy
837	DO igrd = 1, jpbgrd
838	icount = 0
839	icountr = 0
840	idx_bdy(ib_bdy)%nblen(igrd) = 0
841	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
842	DO ib = 1, nblendta(igrd,ib_bdy)
843	! check that data is in correct order in file
844	ibm1 = MAX(1,ib-1)
845	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
846	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
847	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined ', &
848	& ' in order of distance from edge nbr A utility for re-ordering ', &
849	& ' boundary coordinates and data files exists in the TOOLS/OBC directory')
850	ENDIF
851	ENDIF
852	! check if point is in local domain
853	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
854	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino ) THEN
855	!
856	icount = icount + 1
857	!
858	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
859	ENDIF
860	ENDDO
861	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
862	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
863	ENDDO ! igrd
864
865	! Allocate index arrays for this boundary set
866	!--------------------------------------------
867	ilen1 = MAXVAL(idx_bdy(ib_bdy)%nblen(:))
868	ALLOCATE( idx_bdy(ib_bdy)%nbi(ilen1,jpbgrd) )
869	ALLOCATE( idx_bdy(ib_bdy)%nbj(ilen1,jpbgrd) )
870	ALLOCATE( idx_bdy(ib_bdy)%nbr(ilen1,jpbgrd) )
871	ALLOCATE( idx_bdy(ib_bdy)%nbd(ilen1,jpbgrd) )
872	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
873	ALLOCATE( idx_bdy(ib_bdy)%nbmap(ilen1,jpbgrd) )
874	ALLOCATE( idx_bdy(ib_bdy)%nbw(ilen1,jpbgrd) )
875	ALLOCATE( idx_bdy(ib_bdy)%flagu(ilen1,jpbgrd) )
876	ALLOCATE( idx_bdy(ib_bdy)%flagv(ilen1,jpbgrd) )
877
878	! Dispatch mapping indices and discrete distances on each processor
879	! -----------------------------------------------------------------
880
881	com_east = 0
882	com_west = 0
883	com_south = 0
884	com_north = 0
885
886	com_east_b = 0
887	com_west_b = 0
888	com_south_b = 0
889	com_north_b = 0
890
891	DO igrd = 1, jpbgrd
892	icount = 0
893	! Loop on rimwidth to ensure outermost points come first in the local arrays.
894	DO ir=1, nn_rimwidth(ib_bdy)
895	DO ib = 1, nblendta(igrd,ib_bdy)
896	! check if point is in local domain and equals ir
897	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
898	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino .AND. &
899	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
900	!
901	icount = icount + 1
902
903	! Rather assume that boundary data indices are given on global domain
904	! TO BE DISCUSSED ?
905	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
906	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
907	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
908	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
909	! check if point has to be sent
910	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
911	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
912	if((com_east .ne. 1) .and. (ii .eq. (nlci-1)) .and. (nbondi .le. 0)) then
913	com_east = 1
914	elseif((com_west .ne. 1) .and. (ii .eq. 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
915	com_west = 1
916	endif
917	if((com_south .ne. 1) .and. (ij .eq. 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
918	com_south = 1
919	elseif((com_north .ne. 1) .and. (ij .eq. (nlcj-1)) .and. (nbondj .le. 0)) then
920	com_north = 1
921	endif
922	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
923	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
924	ENDIF
925	! check if point has to be received from a neighbour
926	IF(nbondi .eq. 0) THEN
927	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
928	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
929	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
930	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
931	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
932	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
933	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
934	com_south = 1
935	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
936	com_north = 1
937	endif
938	com_west_b = 1
939	endif
940	ENDIF
941	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
942	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
943	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
944	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
945	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
946	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
947	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
948	com_south = 1
949	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
950	com_north = 1
951	endif
952	com_east_b = 1
953	endif
954	ENDIF
955	ELSEIF(nbondi .eq. 1) THEN
956	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
957	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
958	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
959	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
960	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
961	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
962	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
963	com_south = 1
964	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
965	com_north = 1
966	endif
967	com_west_b = 1
968	endif
969	ENDIF
970	ELSEIF(nbondi .eq. -1) THEN
971	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
972	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
973	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
974	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
975	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
976	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
977	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
978	com_south = 1
979	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
980	com_north = 1
981	endif
982	com_east_b = 1
983	endif
984	ENDIF
985	ENDIF
986	IF(nbondj .eq. 0) THEN
987	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
988	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
989	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
990	com_north_b = 1
991	ENDIF
992	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
993	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
994	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
995	com_south_b = 1
996	ENDIF
997	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
998	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
999	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1000	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1001	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1002	com_south_b = 1
1003	endif
1004	ENDIF
1005	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1006	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1007	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1008	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1009	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1010	com_north_b = 1
1011	endif
1012	ENDIF
1013	ELSEIF(nbondj .eq. 1) THEN
1014	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
1015	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1016	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1017	com_south_b = 1
1018	ENDIF
1019	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1020	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1021	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1022	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1023	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1024	com_south_b = 1
1025	endif
1026	ENDIF
1027	ELSEIF(nbondj .eq. -1) THEN
1028	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1029	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1030	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1031	com_north_b = 1
1032	ENDIF
1033	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1034	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1035	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1036	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1037	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1038	com_north_b = 1
1039	endif
1040	ENDIF
1041	ENDIF
1042	ENDDO
1043	ENDDO
1044	ENDDO
1045
1046	! definition of the i- and j- direction local boundaries arrays
1047	! used for sending the boudaries
1048	IF((com_east .eq. 1) .and. (com_west .eq. 1)) THEN
1049	nbondi_bdy(ib_bdy) = 0
1050	ELSEIF ((com_east .eq. 1) .and. (com_west .eq. 0)) THEN
1051	nbondi_bdy(ib_bdy) = -1
1052	ELSEIF ((com_east .eq. 0) .and. (com_west .eq. 1)) THEN
1053	nbondi_bdy(ib_bdy) = 1
1054	ENDIF
1055
1056	IF((com_north .eq. 1) .and. (com_south .eq. 1)) THEN
1057	nbondj_bdy(ib_bdy) = 0
1058	ELSEIF ((com_north .eq. 1) .and. (com_south .eq. 0)) THEN
1059	nbondj_bdy(ib_bdy) = -1
1060	ELSEIF ((com_north .eq. 0) .and. (com_south .eq. 1)) THEN
1061	nbondj_bdy(ib_bdy) = 1
1062	ENDIF
1063
1064	! definition of the i- and j- direction local boundaries arrays
1065	! used for receiving the boudaries
1066	IF((com_east_b .eq. 1) .and. (com_west_b .eq. 1)) THEN
1067	nbondi_bdy_b(ib_bdy) = 0
1068	ELSEIF ((com_east_b .eq. 1) .and. (com_west_b .eq. 0)) THEN
1069	nbondi_bdy_b(ib_bdy) = -1
1070	ELSEIF ((com_east_b .eq. 0) .and. (com_west_b .eq. 1)) THEN
1071	nbondi_bdy_b(ib_bdy) = 1
1072	ENDIF
1073
1074	IF((com_north_b .eq. 1) .and. (com_south_b .eq. 1)) THEN
1075	nbondj_bdy_b(ib_bdy) = 0
1076	ELSEIF ((com_north_b .eq. 1) .and. (com_south_b .eq. 0)) THEN
1077	nbondj_bdy_b(ib_bdy) = -1
1078	ELSEIF ((com_north_b .eq. 0) .and. (com_south_b .eq. 1)) THEN
1079	nbondj_bdy_b(ib_bdy) = 1
1080	ENDIF
1081
1082	! Compute rim weights for FRS scheme
1083	! ----------------------------------
1084	DO igrd = 1, jpbgrd
1085	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1086	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1087	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) ! tanh formulation
1088	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))**2. ! quadratic
1089	! idx_bdy(ib_bdy)%nbw(ib,igrd) = FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)) ! linear
1090	END DO
1091	END DO
1092
1093	! Compute damping coefficients
1094	! ----------------------------
1095	DO igrd = 1, jpbgrd
1096	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1097	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1098	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1099	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1100	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1101	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1102	END DO
1103	END DO
1104
1105	ENDDO
1106
1107	! ------------------------------------------------------
1108	! Initialise masks and find normal/tangential directions
1109	! ------------------------------------------------------
1110
1111	! Read global 2D mask at T-points: bdytmask
1112	! -----------------------------------------
1113	! bdytmask = 1 on the computational domain AND on open boundaries
1114	! = 0 elsewhere
1115
1116	IF( ln_mask_file ) THEN
1117	CALL iom_open( cn_mask_file, inum )
1118	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1119	CALL iom_close( inum )
1120
1121	! Derive mask on U and V grid from mask on T grid
1122	bdyumask(:,:) = 0.e0
1123	bdyvmask(:,:) = 0.e0
1124	DO ij=1, jpjm1
1125	DO ii=1, jpim1
1126	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1127	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1128	END DO
1129	END DO
1130	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1131
1132
1133	! Mask corrections
1134	! ----------------
1135	DO ik = 1, jpkm1
1136	DO ij = 1, jpj
1137	DO ii = 1, jpi
1138	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
1139	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
1140	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
1141	bmask(ii,ij) = bmask(ii,ij) * bdytmask(ii,ij)
1142	END DO
1143	END DO
1144	END DO
1145
1146	DO ik = 1, jpkm1
1147	DO ij = 2, jpjm1
1148	DO ii = 2, jpim1
1149	fmask(ii,ij,ik) = fmask(ii,ij,ik) * bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
1150	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
1151	END DO
1152	END DO
1153	END DO
1154
1155	tmask_i (:,:) = ssmask(:,:) * tmask_i(:,:)
1156
1157	ENDIF ! ln_mask_file=.TRUE.
1158
1159	bdytmask(:,:) = ssmask(:,:)
1160	IF( .not. ln_mask_file ) THEN
1161	! If .not. ln_mask_file then we need to derive mask on U and V grid
1162	! from mask on T grid here.
1163	bdyumask(:,:) = 0.e0
1164	bdyvmask(:,:) = 0.e0
1165	DO ij=1, jpjm1
1166	DO ii=1, jpim1
1167	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1168	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1169	END DO
1170	END DO
1171	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1172	ENDIF
1173
1174	! bdy masks and bmask are now set to zero on boundary points:
1175	igrd = 1 ! In the free surface case, bmask is at T-points
1176	DO ib_bdy = 1, nb_bdy
1177	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1178	bmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1179	ENDDO
1180	ENDDO
1181	!
1182	igrd = 1
1183	DO ib_bdy = 1, nb_bdy
1184	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1185	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1186	ENDDO
1187	ENDDO
1188	!
1189	igrd = 2
1190	DO ib_bdy = 1, nb_bdy
1191	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1192	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1193	ENDDO
1194	ENDDO
1195	!
1196	igrd = 3
1197	DO ib_bdy = 1, nb_bdy
1198	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1199	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1200	ENDDO
1201	ENDDO
1202
1203	! For the flagu/flagv calculation below we require a version of fmask without
1204	! the land boundary condition (shlat) included:
1205	CALL wrk_alloc(jpi,jpj,zfmask)
1206	DO ij = 2, jpjm1
1207	DO ii = 2, jpim1
1208	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1209	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1210	END DO
1211	END DO
1212
1213	! Lateral boundary conditions
1214	CALL lbc_lnk( zfmask , 'F', 1. )
1215	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1216	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1217
1218	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1219
1220	idx_bdy(ib_bdy)%flagu(:,:) = 0.e0
1221	idx_bdy(ib_bdy)%flagv(:,:) = 0.e0
1222	icount = 0
1223
1224	! Calculate relationship of U direction to the local orientation of the boundary
1225	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1226	! flagu = 0 : u is tangential
1227	! flagu = 1 : u is normal to the boundary and is direction is inward
1228
1229	DO igrd = 1,jpbgrd
1230	SELECT CASE( igrd )
1231	CASE( 1 )
1232	pmask => umask(:,:,1)
1233	i_offset = 0
1234	CASE( 2 )
1235	pmask => bdytmask
1236	i_offset = 1
1237	CASE( 3 )
1238	pmask => zfmask(:,:)
1239	i_offset = 0
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	zefl = pmask(nbi+i_offset-1,nbj)
1246	zwfl = pmask(nbi+i_offset,nbj)
1247	! This error check only works if you are using the bdyXmask arrays
1248	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1249	icount = icount + 1
1250	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1251	ELSE
1252	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1253	ENDIF
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 (flagu 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	! Calculate relationship of V direction to the local orientation of the boundary
1266	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1267	! flagv = 0 : v is tangential
1268	! flagv = 1 : v is normal to the boundary and is direction is inward
1269
1270	DO igrd = 1,jpbgrd
1271	SELECT CASE( igrd )
1272	CASE( 1 )
1273	pmask => vmask(:,:,1)
1274	j_offset = 0
1275	CASE( 2 )
1276	pmask => zfmask(:,:)
1277	j_offset = 0
1278	CASE( 3 )
1279	pmask => bdytmask
1280	j_offset = 1
1281	END SELECT
1282	icount = 0
1283	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1284	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1285	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1286	znfl = pmask(nbi,nbj+j_offset-1 )
1287	zsfl = pmask(nbi,nbj+j_offset)
1288	! This error check only works if you are using the bdyXmask arrays
1289	IF( j_offset == 1 .and. znfl + zsfl == 2 ) THEN
1290	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1291	icount = icount + 1
1292	ELSE
1293	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1294	END IF
1295	END DO
1296	IF( icount /= 0 ) THEN
1297	IF(lwp) WRITE(numout,*)
1298	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1299	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1300	IF(lwp) WRITE(numout,*) ' ========== '
1301	IF(lwp) WRITE(numout,*)
1302	nstop = nstop + 1
1303	ENDIF
1304	END DO
1305
1306	END DO
1307
1308	! Compute total lateral surface for volume correction:
1309	! ----------------------------------------------------
1310	! JC: this must be done at each time step with key_vvl
1311	bdysurftot = 0.e0
1312	IF( ln_vol ) THEN
1313	igrd = 2 ! Lateral surface at U-points
1314	DO ib_bdy = 1, nb_bdy
1315	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1316	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1317	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1318	flagu => idx_bdy(ib_bdy)%flagu(ib,igrd)
1319	bdysurftot = bdysurftot + hu (nbi , nbj) &
1320	& * e2u (nbi , nbj) * ABS( flagu ) &
1321	& * tmask_i(nbi , nbj) &
1322	& * tmask_i(nbi+1, nbj)
1323	ENDDO
1324	ENDDO
1325
1326	igrd=3 ! Add lateral surface at V-points
1327	DO ib_bdy = 1, nb_bdy
1328	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1329	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1330	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1331	flagv => idx_bdy(ib_bdy)%flagv(ib,igrd)
1332	bdysurftot = bdysurftot + hv (nbi, nbj ) &
1333	& * e1v (nbi, nbj ) * ABS( flagv ) &
1334	& * tmask_i(nbi, nbj ) &
1335	& * tmask_i(nbi, nbj+1)
1336	ENDDO
1337	ENDDO
1338	!
1339	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
1340	END IF
1341	!
1342	! Tidy up
1343	!--------
1344	IF (nb_bdy>0) THEN
1345	DEALLOCATE(nbidta, nbjdta, nbrdta)
1346	ENDIF
1347
1348	CALL wrk_dealloc(jpi,jpj,zfmask)
1349
1350	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1351
1352	END SUBROUTINE bdy_init
1353
1354	SUBROUTINE bdy_ctl_seg
1355	!!----------------------------------------------------------------------
1356	!! * ROUTINE bdy_ctl_seg *
1357	!!
1358	!! ** Purpose : Check straight open boundary segments location
1359	!!
1360	!! ** Method : - Look for open boundary corners
1361	!! - Check that segments start or end on land
1362	!!----------------------------------------------------------------------
1363	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1364	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1365	REAL(wp), DIMENSION(2) :: ztestmask
1366	!!----------------------------------------------------------------------
1367	!
1368	IF (lwp) WRITE(numout,*) ' '
1369	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1370	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1371	!
1372	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1373	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1374	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1375	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1376	! 1. Check bounds
1377	!----------------
1378	DO ib = 1, nbdysegn
1379	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1380	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1381	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1382	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1383	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1384	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1385	END DO
1386	!
1387	DO ib = 1, nbdysegs
1388	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1389	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1390	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1391	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1392	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1393	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1394	END DO
1395	!
1396	DO ib = 1, nbdysege
1397	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1398	IF ((jpieob(ib).ge.jpiglo-1).or.&
1399	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1400	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1401	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1402	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1403	END DO
1404	!
1405	DO ib = 1, nbdysegw
1406	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1407	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1408	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1409	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1410	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1411	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1412	ENDDO
1413	!
1414	!
1415	! 2. Look for segment crossings
1416	!------------------------------
1417	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1418	!
1419	itest = 0 ! corner number
1420	!
1421	! flag to detect if start or end of open boundary belongs to a corner
1422	! if not (=0), it must be on land.
1423	! if a corner is detected, save bdy package number for further tests
1424	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1425	! South/West crossings
1426	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1427	DO ib1 = 1, nbdysegw
1428	DO ib2 = 1, nbdysegs
1429	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1430	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1431	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1432	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1433	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1434	! We have a possible South-West corner
1435	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1436	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1437	icornw(ib1,1) = npckgs(ib2)
1438	icorns(ib2,1) = npckgw(ib1)
1439	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1440	IF(lwp) WRITE(numout,*)
1441	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1442	& jpisft(ib2), jpjwft(ib1)
1443	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1444	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1445	& ' and South segment: ',npckgs(ib2)
1446	IF(lwp) WRITE(numout,*)
1447	nstop = nstop + 1
1448	ELSE
1449	IF(lwp) WRITE(numout,*)
1450	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
1451	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1452	& ' and South segment: ',npckgs(ib2)
1453	IF(lwp) WRITE(numout,*)
1454	nstop = nstop+1
1455	END IF
1456	END IF
1457	END DO
1458	END DO
1459	END IF
1460	!
1461	! South/East crossings
1462	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1463	DO ib1 = 1, nbdysege
1464	DO ib2 = 1, nbdysegs
1465	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1466	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1467	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1468	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1469	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1470	! We have a possible South-East corner
1471	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1472	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1473	icorne(ib1,1) = npckgs(ib2)
1474	icorns(ib2,2) = npckge(ib1)
1475	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1476	IF(lwp) WRITE(numout,*)
1477	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1478	& jpisdt(ib2), jpjeft(ib1)
1479	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1480	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1481	& ' and South segment: ',npckgs(ib2)
1482	IF(lwp) WRITE(numout,*)
1483	nstop = nstop + 1
1484	ELSE
1485	IF(lwp) WRITE(numout,*)
1486	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
1487	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1488	& ' and South segment: ',npckgs(ib2)
1489	IF(lwp) WRITE(numout,*)
1490	nstop = nstop + 1
1491	END IF
1492	END IF
1493	END DO
1494	END DO
1495	END IF
1496	!
1497	! North/West crossings
1498	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1499	DO ib1 = 1, nbdysegw
1500	DO ib2 = 1, nbdysegn
1501	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1502	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1503	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1504	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1505	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1506	! We have a possible North-West corner
1507	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1508	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1509	icornw(ib1,2) = npckgn(ib2)
1510	icornn(ib2,1) = npckgw(ib1)
1511	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1512	IF(lwp) WRITE(numout,*)
1513	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1514	& jpinft(ib2), jpjwdt(ib1)
1515	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1516	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1517	& ' and North segment: ',npckgn(ib2)
1518	IF(lwp) WRITE(numout,*)
1519	nstop = nstop + 1
1520	ELSE
1521	IF(lwp) WRITE(numout,*)
1522	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1523	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1524	& ' and North segment: ',npckgn(ib2)
1525	IF(lwp) WRITE(numout,*)
1526	nstop = nstop + 1
1527	END IF
1528	END IF
1529	END DO
1530	END DO
1531	END IF
1532	!
1533	! North/East crossings
1534	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1535	DO ib1 = 1, nbdysege
1536	DO ib2 = 1, nbdysegn
1537	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1538	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1539	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1540	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1541	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1542	! We have a possible North-East corner
1543	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1544	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1545	icorne(ib1,2) = npckgn(ib2)
1546	icornn(ib2,2) = npckge(ib1)
1547	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1548	IF(lwp) WRITE(numout,*)
1549	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1550	& jpindt(ib2), jpjedt(ib1)
1551	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1552	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1553	& ' and North segment: ',npckgn(ib2)
1554	IF(lwp) WRITE(numout,*)
1555	nstop = nstop + 1
1556	ELSE
1557	IF(lwp) WRITE(numout,*)
1558	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1559	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1560	& ' and North segment: ',npckgn(ib2)
1561	IF(lwp) WRITE(numout,*)
1562	nstop = nstop + 1
1563	END IF
1564	END IF
1565	END DO
1566	END DO
1567	END IF
1568	!
1569	! 3. Check if segment extremities are on land
1570	!--------------------------------------------
1571	!
1572	! West segments
1573	DO ib = 1, nbdysegw
1574	! get mask at boundary extremities:
1575	ztestmask(1:2)=0.
1576	DO ji = 1, jpi
1577	DO jj = 1, jpj
1578	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1579	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1580	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1581	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1582	END DO
1583	END DO
1584	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1585
1586	IF (ztestmask(1)==1) THEN
1587	IF (icornw(ib,1)==0) THEN
1588	IF(lwp) WRITE(numout,*)
1589	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1590	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1591	IF(lwp) WRITE(numout,*)
1592	nstop = nstop + 1
1593	ELSE
1594	! This is a corner
1595	IF(lwp) WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1596	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1597	itest=itest+1
1598	ENDIF
1599	ENDIF
1600	IF (ztestmask(2)==1) THEN
1601	IF (icornw(ib,2)==0) THEN
1602	IF(lwp) WRITE(numout,*)
1603	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1604	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1605	IF(lwp) WRITE(numout,*)
1606	nstop = nstop + 1
1607	ELSE
1608	! This is a corner
1609	IF(lwp) WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1610	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1611	itest=itest+1
1612	ENDIF
1613	ENDIF
1614	END DO
1615	!
1616	! East segments
1617	DO ib = 1, nbdysege
1618	! get mask at boundary extremities:
1619	ztestmask(1:2)=0.
1620	DO ji = 1, jpi
1621	DO jj = 1, jpj
1622	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1623	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1624	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1625	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1626	END DO
1627	END DO
1628	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1629
1630	IF (ztestmask(1)==1) THEN
1631	IF (icorne(ib,1)==0) THEN
1632	IF(lwp) WRITE(numout,*)
1633	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1634	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1635	IF(lwp) WRITE(numout,*)
1636	nstop = nstop + 1
1637	ELSE
1638	! This is a corner
1639	IF(lwp) WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1640	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1641	itest=itest+1
1642	ENDIF
1643	ENDIF
1644	IF (ztestmask(2)==1) THEN
1645	IF (icorne(ib,2)==0) THEN
1646	IF(lwp) WRITE(numout,*)
1647	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1648	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1649	IF(lwp) WRITE(numout,*)
1650	nstop = nstop + 1
1651	ELSE
1652	! This is a corner
1653	IF(lwp) WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1654	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1655	itest=itest+1
1656	ENDIF
1657	ENDIF
1658	END DO
1659	!
1660	! South segments
1661	DO ib = 1, nbdysegs
1662	! get mask at boundary extremities:
1663	ztestmask(1:2)=0.
1664	DO ji = 1, jpi
1665	DO jj = 1, jpj
1666	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1667	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1668	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1669	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1670	END DO
1671	END DO
1672	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1673
1674	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1675	IF(lwp) WRITE(numout,*)
1676	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1677	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1678	IF(lwp) WRITE(numout,*)
1679	nstop = nstop + 1
1680	ENDIF
1681	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1682	IF(lwp) WRITE(numout,*)
1683	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1684	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1685	IF(lwp) WRITE(numout,*)
1686	nstop = nstop + 1
1687	ENDIF
1688	END DO
1689	!
1690	! North segments
1691	DO ib = 1, nbdysegn
1692	! get mask at boundary extremities:
1693	ztestmask(1:2)=0.
1694	DO ji = 1, jpi
1695	DO jj = 1, jpj
1696	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1697	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1698	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1699	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1700	END DO
1701	END DO
1702	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1703
1704	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1705	IF(lwp) WRITE(numout,*)
1706	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1707	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1708	IF(lwp) WRITE(numout,*)
1709	nstop = nstop + 1
1710	ENDIF
1711	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1712	IF(lwp) WRITE(numout,*)
1713	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1714	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1715	IF(lwp) WRITE(numout,*)
1716	nstop = nstop + 1
1717	ENDIF
1718	END DO
1719	!
1720	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1721	!
1722	! Other tests TBD:
1723	! segments completly on land
1724	! optimized open boundary array length according to landmask
1725	! Nudging layers that overlap with interior domain
1726	!
1727	END SUBROUTINE bdy_ctl_seg
1728
1729	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1730	!!----------------------------------------------------------------------
1731	!! * ROUTINE bdy_ctl_corn *
1732	!!
1733	!! ** Purpose : Check numerical schemes consistency between
1734	!! segments having a common corner
1735	!!
1736	!! ** Method :
1737	!!----------------------------------------------------------------------
1738	INTEGER, INTENT(in) :: ib1, ib2
1739	INTEGER :: itest
1740	!!----------------------------------------------------------------------
1741	itest = 0
1742
1743	IF (cn_dyn2d(ib1)/=cn_dyn2d(ib2)) itest = itest + 1
1744	IF (cn_dyn3d(ib1)/=cn_dyn3d(ib2)) itest = itest + 1
1745	IF (cn_tra(ib1)/=cn_tra(ib2)) itest = itest + 1
1746	!
1747	IF (nn_dyn2d_dta(ib1)/=nn_dyn2d_dta(ib2)) itest = itest + 1
1748	IF (nn_dyn3d_dta(ib1)/=nn_dyn3d_dta(ib2)) itest = itest + 1
1749	IF (nn_tra_dta(ib1)/=nn_tra_dta(ib2)) itest = itest + 1
1750	!
1751	IF (nn_rimwidth(ib1)/=nn_rimwidth(ib2)) itest = itest + 1
1752	!
1753	IF ( itest>0 ) THEN
1754	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1755	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1756	IF(lwp) WRITE(numout,*)
1757	nstop = nstop + 1
1758	ENDIF
1759	!
1760	END SUBROUTINE bdy_ctl_corn
1761
1762	#else
1763	!!---------------------------------------------------------------------------------
1764	!! Dummy module NO open boundaries
1765	!!---------------------------------------------------------------------------------
1766	CONTAINS
1767	SUBROUTINE bdy_init ! Dummy routine
1768	END SUBROUTINE bdy_init
1769	#endif
1770
1771	!!=================================================================================
1772	END MODULE bdyini

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