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bdyini.F90 in trunk/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

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source: trunk/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 4689

Last change on this file since 4689 was 4689, checked in by clem, 10 years ago
new version of LIM3 with perfect conservation of heat, see ticket #1352
Property svn:keywords set to `Id`
File size: 83.0 KB

Line
1	MODULE bdyini
2	!!======================================================================
3	!! * MODULE bdyini *
4	!! Unstructured open boundaries : initialisation
5	!!======================================================================
6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
8	!! - ! 2007-01 (D. Storkey) Tidal forcing
9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
10	!! 3.3 ! 2010-09 (E.O'Dea) updates for Shelf configurations
11	!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
12	!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
13	!! 3.4 ! 2012 (J. Chanut) straight open boundary case update
14	!! 3.5 ! 2012 (S. Mocavero, I. Epicoco) Updates for the
15	!! optimization of BDY communications
16	!!----------------------------------------------------------------------
17	#if defined key_bdy
18	!!----------------------------------------------------------------------
19	!! 'key_bdy' Unstructured Open Boundary Conditions
20	!!----------------------------------------------------------------------
21	!! bdy_init : Initialization of unstructured open boundaries
22	!!----------------------------------------------------------------------
23	USE wrk_nemo ! Memory Allocation
24	USE timing ! Timing
25	USE oce ! ocean dynamics and tracers variables
26	USE dom_oce ! ocean space and time domain
27	USE bdy_oce ! unstructured open boundary conditions
28	USE in_out_manager ! I/O units
29	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
30	USE lib_mpp ! for mpp_sum
31	USE iom ! I/O
32	USE sbctide, ONLY: lk_tide ! Tidal forcing or not
33	USE phycst, ONLY: rday
34
35	IMPLICIT NONE
36	PRIVATE
37
38	PUBLIC bdy_init ! routine called in nemo_init
39
40	INTEGER, PARAMETER :: jp_nseg = 100
41	INTEGER, PARAMETER :: nrimmax = 20 ! maximum rimwidth in structured
42	! open boundary data files
43	! Straight open boundary segment parameters:
44	INTEGER :: nbdysege, nbdysegw, nbdysegn, nbdysegs
45	INTEGER, DIMENSION(jp_nseg) :: jpieob, jpjedt, jpjeft, npckge
46	INTEGER, DIMENSION(jp_nseg) :: jpiwob, jpjwdt, jpjwft, npckgw
47	INTEGER, DIMENSION(jp_nseg) :: jpjnob, jpindt, jpinft, npckgn
48	INTEGER, DIMENSION(jp_nseg) :: jpjsob, jpisdt, jpisft, npckgs
49	!!----------------------------------------------------------------------
50	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
51	!! $Id$
52	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
53	!!----------------------------------------------------------------------
54	CONTAINS
55
56	SUBROUTINE bdy_init
57	!!----------------------------------------------------------------------
58	!! * ROUTINE bdy_init *
59	!!
60	!! ** Purpose : Initialization of the dynamics and tracer fields with
61	!! unstructured open boundaries.
62	!!
63	!! ** Method : Read initialization arrays (mask, indices) to identify
64	!! an unstructured open boundary
65	!!
66	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
67	!!----------------------------------------------------------------------
68	! namelist variables
69	!-------------------
70	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile
71	CHARACTER(LEN=1) :: ctypebdy
72	INTEGER :: nbdyind, nbdybeg, nbdyend
73
74	! local variables
75	!-------------------
76	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
77	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
78	INTEGER :: iw, ie, is, in, inum, id_dummy ! - -
79	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
80	INTEGER :: jpbdtau, jpbdtas ! - -
81	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
82	INTEGER :: i_offset, j_offset ! - -
83	INTEGER, POINTER :: nbi, nbj, nbr ! short cuts
84	REAL(wp), POINTER :: flagu, flagv ! - -
85	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
86	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
87	INTEGER, DIMENSION (2) :: kdimsz
88	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
89	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
90	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
91	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
92	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
93	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
94	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
95	REAL(wp), POINTER, DIMENSION(:,:) :: zfmask ! temporary fmask array excluding coastal boundary condition (shlat)
96
97	!!
98	NAMELIST/nambdy/ nb_bdy, ln_coords_file, cn_coords_file, &
99	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
100	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
101	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
102	#if ( defined key_lim2 \|\| defined key_lim3 )
103	& cn_ice_lim, nn_ice_lim_dta, &
104	#endif
105	#if defined key_lim3
106	& rn_ice_tem, rn_ice_sal, rn_ice_age, &
107	#endif
108	& ln_vol, nn_volctl, nn_rimwidth
109	!!
110	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
111	INTEGER :: ios ! Local integer output status for namelist read
112	!!----------------------------------------------------------------------
113
114	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
115
116	IF(lwp) WRITE(numout,*)
117	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
118	IF(lwp) WRITE(numout,*) '~~~~~~~~'
119	!
120
121	IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
122	& ' and general open boundary condition are not compatible' )
123
124	cgrid= (/'t','u','v'/)
125
126	! ------------------------
127	! Read namelist parameters
128	! ------------------------
129
130	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
131	READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 901)
132	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp )
133
134	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
135	READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 902 )
136	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp )
137	IF(lwm) WRITE ( numond, nambdy )
138
139	! -----------------------------------------
140	! Check and write out namelist parameters
141	! -----------------------------------------
142	! ! control prints
143	IF(lwp) WRITE(numout,*) ' nambdy'
144
145	IF( nb_bdy .eq. 0 ) THEN
146	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
147	ELSE
148	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ',nb_bdy
149	ENDIF
150
151	DO ib_bdy = 1,nb_bdy
152	IF(lwp) WRITE(numout,*) ' '
153	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
154
155	IF( ln_coords_file(ib_bdy) ) THEN
156	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
157	ELSE
158	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
159	ENDIF
160	IF(lwp) WRITE(numout,*)
161
162	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
163	SELECT CASE( cn_dyn2d(ib_bdy) )
164	CASE('none')
165	IF(lwp) WRITE(numout,*) ' no open boundary condition'
166	dta_bdy(ib_bdy)%ll_ssh = .false.
167	dta_bdy(ib_bdy)%ll_u2d = .false.
168	dta_bdy(ib_bdy)%ll_v2d = .false.
169	CASE('frs')
170	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
171	dta_bdy(ib_bdy)%ll_ssh = .false.
172	dta_bdy(ib_bdy)%ll_u2d = .true.
173	dta_bdy(ib_bdy)%ll_v2d = .true.
174	CASE('flather')
175	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
176	dta_bdy(ib_bdy)%ll_ssh = .true.
177	dta_bdy(ib_bdy)%ll_u2d = .true.
178	dta_bdy(ib_bdy)%ll_v2d = .true.
179	CASE('orlanski')
180	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
181	dta_bdy(ib_bdy)%ll_ssh = .false.
182	dta_bdy(ib_bdy)%ll_u2d = .true.
183	dta_bdy(ib_bdy)%ll_v2d = .true.
184	CASE('orlanski_npo')
185	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
186	dta_bdy(ib_bdy)%ll_ssh = .false.
187	dta_bdy(ib_bdy)%ll_u2d = .true.
188	dta_bdy(ib_bdy)%ll_v2d = .true.
189	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
190	END SELECT
191	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
192	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
193	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
194	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
195	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
196	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
197	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
198	END SELECT
199	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
200	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
201	ENDIF
202	ENDIF
203	IF(lwp) WRITE(numout,*)
204
205	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
206	SELECT CASE( cn_dyn3d(ib_bdy) )
207	CASE('none')
208	IF(lwp) WRITE(numout,*) ' no open boundary condition'
209	dta_bdy(ib_bdy)%ll_u3d = .false.
210	dta_bdy(ib_bdy)%ll_v3d = .false.
211	CASE('frs')
212	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
213	dta_bdy(ib_bdy)%ll_u3d = .true.
214	dta_bdy(ib_bdy)%ll_v3d = .true.
215	CASE('specified')
216	IF(lwp) WRITE(numout,*) ' Specified value'
217	dta_bdy(ib_bdy)%ll_u3d = .true.
218	dta_bdy(ib_bdy)%ll_v3d = .true.
219	CASE('zero')
220	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
221	dta_bdy(ib_bdy)%ll_u3d = .false.
222	dta_bdy(ib_bdy)%ll_v3d = .false.
223	CASE('orlanski')
224	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
225	dta_bdy(ib_bdy)%ll_u3d = .true.
226	dta_bdy(ib_bdy)%ll_v3d = .true.
227	CASE('orlanski_npo')
228	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
229	dta_bdy(ib_bdy)%ll_u3d = .true.
230	dta_bdy(ib_bdy)%ll_v3d = .true.
231	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
232	END SELECT
233	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
234	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
235	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
236	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
237	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
238	END SELECT
239	ENDIF
240
241	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
242	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
243	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
244	ln_dyn3d_dmp(ib_bdy)=.false.
245	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
246	CALL ctl_stop( 'Use FRS OR relaxation' )
247	ELSE
248	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
249	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
250	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
251	dta_bdy(ib_bdy)%ll_u3d = .true.
252	dta_bdy(ib_bdy)%ll_v3d = .true.
253	ENDIF
254	ELSE
255	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
256	ENDIF
257	IF(lwp) WRITE(numout,*)
258
259	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
260	SELECT CASE( cn_tra(ib_bdy) )
261	CASE('none')
262	IF(lwp) WRITE(numout,*) ' no open boundary condition'
263	dta_bdy(ib_bdy)%ll_tem = .false.
264	dta_bdy(ib_bdy)%ll_sal = .false.
265	CASE('frs')
266	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
267	dta_bdy(ib_bdy)%ll_tem = .true.
268	dta_bdy(ib_bdy)%ll_sal = .true.
269	CASE('specified')
270	IF(lwp) WRITE(numout,*) ' Specified value'
271	dta_bdy(ib_bdy)%ll_tem = .true.
272	dta_bdy(ib_bdy)%ll_sal = .true.
273	CASE('neumann')
274	IF(lwp) WRITE(numout,*) ' Neumann conditions'
275	dta_bdy(ib_bdy)%ll_tem = .false.
276	dta_bdy(ib_bdy)%ll_sal = .false.
277	CASE('runoff')
278	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
279	dta_bdy(ib_bdy)%ll_tem = .false.
280	dta_bdy(ib_bdy)%ll_sal = .false.
281	CASE('orlanski')
282	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
283	dta_bdy(ib_bdy)%ll_tem = .true.
284	dta_bdy(ib_bdy)%ll_sal = .true.
285	CASE('orlanski_npo')
286	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
287	dta_bdy(ib_bdy)%ll_tem = .true.
288	dta_bdy(ib_bdy)%ll_sal = .true.
289	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
290	END SELECT
291	IF( cn_tra(ib_bdy) /= 'none' ) THEN
292	SELECT CASE( nn_tra_dta(ib_bdy) ) !
293	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
294	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
295	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
296	END SELECT
297	ENDIF
298
299	IF ( ln_tra_dmp(ib_bdy) ) THEN
300	IF ( cn_tra(ib_bdy) == 'none' ) THEN
301	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
302	ln_tra_dmp(ib_bdy)=.false.
303	ELSEIF ( cn_tra(ib_bdy) == 'frs' ) THEN
304	CALL ctl_stop( 'Use FRS OR relaxation' )
305	ELSE
306	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
307	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
308	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
309	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
310	dta_bdy(ib_bdy)%ll_tem = .true.
311	dta_bdy(ib_bdy)%ll_sal = .true.
312	ENDIF
313	ELSE
314	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
315	ENDIF
316	IF(lwp) WRITE(numout,*)
317
318	#if defined key_lim2
319	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
320	SELECT CASE( cn_ice_lim(ib_bdy) )
321	CASE('none')
322	IF(lwp) WRITE(numout,*) ' no open boundary condition'
323	dta_bdy(ib_bdy)%ll_frld = .false.
324	dta_bdy(ib_bdy)%ll_hicif = .false.
325	dta_bdy(ib_bdy)%ll_hsnif = .false.
326	CASE('frs')
327	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
328	dta_bdy(ib_bdy)%ll_frld = .true.
329	dta_bdy(ib_bdy)%ll_hicif = .true.
330	dta_bdy(ib_bdy)%ll_hsnif = .true.
331	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
332	END SELECT
333	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
334	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
335	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
336	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
337	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
338	END SELECT
339	ENDIF
340	IF(lwp) WRITE(numout,*)
341	#elif defined key_lim3
342	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
343	SELECT CASE( cn_ice_lim(ib_bdy) )
344	CASE('none')
345	IF(lwp) WRITE(numout,*) ' no open boundary condition'
346	dta_bdy(ib_bdy)%ll_a_i = .false.
347	dta_bdy(ib_bdy)%ll_ht_i = .false.
348	dta_bdy(ib_bdy)%ll_ht_s = .false.
349	CASE('frs')
350	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
351	dta_bdy(ib_bdy)%ll_a_i = .true.
352	dta_bdy(ib_bdy)%ll_ht_i = .true.
353	dta_bdy(ib_bdy)%ll_ht_s = .true.
354	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
355	END SELECT
356	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
357	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
358	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
359	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
360	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
361	END SELECT
362	ENDIF
363	IF(lwp) WRITE(numout,*)
364	IF(lwp) WRITE(numout,*) ' tem of bdy sea-ice = ', rn_ice_tem(ib_bdy)
365	IF(lwp) WRITE(numout,*) ' sal of bdy sea-ice = ', rn_ice_sal(ib_bdy)
366	IF(lwp) WRITE(numout,*) ' age of bdy sea-ice = ', rn_ice_age(ib_bdy)
367	#endif
368
369	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
370	IF(lwp) WRITE(numout,*)
371
372	ENDDO
373
374	IF (nb_bdy .gt. 0) THEN
375	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
376	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
377	IF(lwp) WRITE(numout,*)
378	SELECT CASE ( nn_volctl )
379	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
380	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
381	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
382	END SELECT
383	IF(lwp) WRITE(numout,*)
384	ELSE
385	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
386	IF(lwp) WRITE(numout,*)
387	ENDIF
388	ENDIF
389
390	! -------------------------------------------------
391	! Initialise indices arrays for open boundaries
392	! -------------------------------------------------
393
394	! Work out global dimensions of boundary data
395	! ---------------------------------------------
396	REWIND( numnam_cfg )
397
398	!!----------------------------------------------------------------------
399
400
401
402	nblendta(:,:) = 0
403	nbdysege = 0
404	nbdysegw = 0
405	nbdysegn = 0
406	nbdysegs = 0
407	icount = 0 ! count user defined segments
408	! Dimensions below are used to allocate arrays to read external data
409	jpbdtas = 1 ! Maximum size of boundary data (structured case)
410	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
411
412	DO ib_bdy = 1, nb_bdy
413
414	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
415
416	icount = icount + 1
417	! No REWIND here because may need to read more than one nambdy_index namelist.
418	! Read only namelist_cfg to avoid unseccessfull overwrite
419	!! REWIND( numnam_ref ) ! Namelist nambdy_index in reference namelist : Open boundaries indexes
420	!! READ ( numnam_ref, namrun, IOSTAT = ios, ERR = 903)
421	!!903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in reference namelist', lwp )
422
423	!! REWIND( numnam_cfg ) ! Namelist nambdy_index in configuration namelist : Open boundaries indexes
424	READ ( numnam_cfg, nambdy_index, IOSTAT = ios, ERR = 904 )
425	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in configuration namelist', lwp )
426	IF(lwm) WRITE ( numond, nambdy_index )
427
428	SELECT CASE ( TRIM(ctypebdy) )
429	CASE( 'N' )
430	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
431	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
432	nbdybeg = 2
433	nbdyend = jpiglo - 1
434	ENDIF
435	nbdysegn = nbdysegn + 1
436	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
437	jpjnob(nbdysegn) = nbdyind
438	jpindt(nbdysegn) = nbdybeg
439	jpinft(nbdysegn) = nbdyend
440	!
441	CASE( 'S' )
442	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
443	nbdyind = 2 ! set boundary to whole side of model domain.
444	nbdybeg = 2
445	nbdyend = jpiglo - 1
446	ENDIF
447	nbdysegs = nbdysegs + 1
448	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
449	jpjsob(nbdysegs) = nbdyind
450	jpisdt(nbdysegs) = nbdybeg
451	jpisft(nbdysegs) = nbdyend
452	!
453	CASE( 'E' )
454	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
455	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
456	nbdybeg = 2
457	nbdyend = jpjglo - 1
458	ENDIF
459	nbdysege = nbdysege + 1
460	npckge(nbdysege) = ib_bdy ! Save bdy package number
461	jpieob(nbdysege) = nbdyind
462	jpjedt(nbdysege) = nbdybeg
463	jpjeft(nbdysege) = nbdyend
464	!
465	CASE( 'W' )
466	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
467	nbdyind = 2 ! set boundary to whole side of model domain.
468	nbdybeg = 2
469	nbdyend = jpjglo - 1
470	ENDIF
471	nbdysegw = nbdysegw + 1
472	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
473	jpiwob(nbdysegw) = nbdyind
474	jpjwdt(nbdysegw) = nbdybeg
475	jpjwft(nbdysegw) = nbdyend
476	!
477	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
478	END SELECT
479
480	! For simplicity we assume that in case of straight bdy, arrays have the same length
481	! (even if it is true that last tangential velocity points
482	! are useless). This simplifies a little bit boundary data format (and agrees with format
483	! used so far in obc package)
484
485	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
486	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
487	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
488	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
489
490	ELSE ! Read size of arrays in boundary coordinates file.
491	CALL iom_open( cn_coords_file(ib_bdy), inum )
492	DO igrd = 1, jpbgrd
493	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
494	!clem nblendta(igrd,ib_bdy) = kdimsz(1)
495	!clem jpbdtau = MAX(jpbdtau, kdimsz(1))
496	nblendta(igrd,ib_bdy) = MAXVAL(kdimsz)
497	jpbdtau = MAX(jpbdtau, MAXVAL(kdimsz))
498	ENDDO
499	CALL iom_close( inum )
500
501	ENDIF
502
503	ENDDO ! ib_bdy
504
505	IF (nb_bdy>0) THEN
506	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
507
508	! Allocate arrays
509	!---------------
510	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
511	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
512
513	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
514	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
515	!
516	ENDIF
517
518	! Now look for crossings in user (namelist) defined open boundary segments:
519	!--------------------------------------------------------------------------
520	IF ( icount>0 ) CALL bdy_ctl_seg
521
522	! Calculate global boundary index arrays or read in from file
523	!------------------------------------------------------------
524	! 1. Read global index arrays from boundary coordinates file.
525	DO ib_bdy = 1, nb_bdy
526
527	IF( ln_coords_file(ib_bdy) ) THEN
528
529	CALL iom_open( cn_coords_file(ib_bdy), inum )
530	DO igrd = 1, jpbgrd
531	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
532	DO ii = 1,nblendta(igrd,ib_bdy)
533	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
534	END DO
535	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
536	DO ii = 1,nblendta(igrd,ib_bdy)
537	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
538	END DO
539	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
540	DO ii = 1,nblendta(igrd,ib_bdy)
541	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
542	END DO
543
544	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
545	IF(lwp) WRITE(numout,*)
546	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
547	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
548	IF (ibr_max < nn_rimwidth(ib_bdy)) &
549	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
550	END DO
551	CALL iom_close( inum )
552
553	ENDIF
554
555	ENDDO
556
557	! 2. Now fill indices corresponding to straight open boundary arrays:
558	! East
559	!-----
560	DO iseg = 1, nbdysege
561	ib_bdy = npckge(iseg)
562	!
563	! ------------ T points -------------
564	igrd=1
565	icount=0
566	DO ir = 1, nn_rimwidth(ib_bdy)
567	DO ij = jpjedt(iseg), jpjeft(iseg)
568	icount = icount + 1
569	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
570	nbjdta(icount, igrd, ib_bdy) = ij
571	nbrdta(icount, igrd, ib_bdy) = ir
572	ENDDO
573	ENDDO
574	!
575	! ------------ U points -------------
576	igrd=2
577	icount=0
578	DO ir = 1, nn_rimwidth(ib_bdy)
579	DO ij = jpjedt(iseg), jpjeft(iseg)
580	icount = icount + 1
581	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
582	nbjdta(icount, igrd, ib_bdy) = ij
583	nbrdta(icount, igrd, ib_bdy) = ir
584	ENDDO
585	ENDDO
586	!
587	! ------------ V points -------------
588	igrd=3
589	icount=0
590	DO ir = 1, nn_rimwidth(ib_bdy)
591	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
592	DO ij = jpjedt(iseg), jpjeft(iseg)
593	icount = icount + 1
594	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
595	nbjdta(icount, igrd, ib_bdy) = ij
596	nbrdta(icount, igrd, ib_bdy) = ir
597	ENDDO
598	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
599	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
600	ENDDO
601	ENDDO
602	!
603	! West
604	!-----
605	DO iseg = 1, nbdysegw
606	ib_bdy = npckgw(iseg)
607	!
608	! ------------ T points -------------
609	igrd=1
610	icount=0
611	DO ir = 1, nn_rimwidth(ib_bdy)
612	DO ij = jpjwdt(iseg), jpjwft(iseg)
613	icount = icount + 1
614	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
615	nbjdta(icount, igrd, ib_bdy) = ij
616	nbrdta(icount, igrd, ib_bdy) = ir
617	ENDDO
618	ENDDO
619	!
620	! ------------ U points -------------
621	igrd=2
622	icount=0
623	DO ir = 1, nn_rimwidth(ib_bdy)
624	DO ij = jpjwdt(iseg), jpjwft(iseg)
625	icount = icount + 1
626	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
627	nbjdta(icount, igrd, ib_bdy) = ij
628	nbrdta(icount, igrd, ib_bdy) = ir
629	ENDDO
630	ENDDO
631	!
632	! ------------ V points -------------
633	igrd=3
634	icount=0
635	DO ir = 1, nn_rimwidth(ib_bdy)
636	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
637	DO ij = jpjwdt(iseg), jpjwft(iseg)
638	icount = icount + 1
639	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
640	nbjdta(icount, igrd, ib_bdy) = ij
641	nbrdta(icount, igrd, ib_bdy) = ir
642	ENDDO
643	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
644	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
645	ENDDO
646	ENDDO
647	!
648	! North
649	!-----
650	DO iseg = 1, nbdysegn
651	ib_bdy = npckgn(iseg)
652	!
653	! ------------ T points -------------
654	igrd=1
655	icount=0
656	DO ir = 1, nn_rimwidth(ib_bdy)
657	DO ii = jpindt(iseg), jpinft(iseg)
658	icount = icount + 1
659	nbidta(icount, igrd, ib_bdy) = ii
660	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
661	nbrdta(icount, igrd, ib_bdy) = ir
662	ENDDO
663	ENDDO
664	!
665	! ------------ U points -------------
666	igrd=2
667	icount=0
668	DO ir = 1, nn_rimwidth(ib_bdy)
669	! DO ii = jpindt(iseg), jpinft(iseg) - 1
670	DO ii = jpindt(iseg), jpinft(iseg)
671	icount = icount + 1
672	nbidta(icount, igrd, ib_bdy) = ii
673	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
674	nbrdta(icount, igrd, ib_bdy) = ir
675	ENDDO
676	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
677	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
678	ENDDO
679	!
680	! ------------ V points -------------
681	igrd=3
682	icount=0
683	DO ir = 1, nn_rimwidth(ib_bdy)
684	DO ii = jpindt(iseg), jpinft(iseg)
685	icount = icount + 1
686	nbidta(icount, igrd, ib_bdy) = ii
687	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
688	nbrdta(icount, igrd, ib_bdy) = ir
689	ENDDO
690	ENDDO
691	ENDDO
692	!
693	! South
694	!-----
695	DO iseg = 1, nbdysegs
696	ib_bdy = npckgs(iseg)
697	!
698	! ------------ T points -------------
699	igrd=1
700	icount=0
701	DO ir = 1, nn_rimwidth(ib_bdy)
702	DO ii = jpisdt(iseg), jpisft(iseg)
703	icount = icount + 1
704	nbidta(icount, igrd, ib_bdy) = ii
705	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
706	nbrdta(icount, igrd, ib_bdy) = ir
707	ENDDO
708	ENDDO
709	!
710	! ------------ U points -------------
711	igrd=2
712	icount=0
713	DO ir = 1, nn_rimwidth(ib_bdy)
714	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
715	DO ii = jpisdt(iseg), jpisft(iseg)
716	icount = icount + 1
717	nbidta(icount, igrd, ib_bdy) = ii
718	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
719	nbrdta(icount, igrd, ib_bdy) = ir
720	ENDDO
721	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
722	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
723	ENDDO
724	!
725	! ------------ V points -------------
726	igrd=3
727	icount=0
728	DO ir = 1, nn_rimwidth(ib_bdy)
729	DO ii = jpisdt(iseg), jpisft(iseg)
730	icount = icount + 1
731	nbidta(icount, igrd, ib_bdy) = ii
732	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
733	nbrdta(icount, igrd, ib_bdy) = ir
734	ENDDO
735	ENDDO
736	ENDDO
737
738	! Deal with duplicated points
739	!-----------------------------
740	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
741	! if their distance to the bdy is greater than the other
742	! If their distance are the same, just keep only one to avoid updating a point twice
743	DO igrd = 1, jpbgrd
744	DO ib_bdy1 = 1, nb_bdy
745	DO ib_bdy2 = 1, nb_bdy
746	IF (ib_bdy1/=ib_bdy2) THEN
747	DO ib1 = 1, nblendta(igrd,ib_bdy1)
748	DO ib2 = 1, nblendta(igrd,ib_bdy2)
749	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
750	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
751	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
752	! & nbidta(ib1, igrd, ib_bdy1), &
753	! & nbjdta(ib2, igrd, ib_bdy2)
754	! keep only points with the lowest distance to boundary:
755	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
756	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
757	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
758	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
759	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
760	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
761	! Arbitrary choice if distances are the same:
762	ELSE
763	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
764	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
765	ENDIF
766	END IF
767	END DO
768	END DO
769	ENDIF
770	END DO
771	END DO
772	END DO
773
774	! Work out dimensions of boundary data on each processor
775	! ------------------------------------------------------
776
777	! Rather assume that boundary data indices are given on global domain
778	! TO BE DISCUSSED ?
779	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
780	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
781	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
782	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
783	iw = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
784	ie = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
785	is = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
786	in = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
787
788	ALLOCATE( nbondi_bdy(nb_bdy))
789	ALLOCATE( nbondj_bdy(nb_bdy))
790	nbondi_bdy(:)=2
791	nbondj_bdy(:)=2
792	ALLOCATE( nbondi_bdy_b(nb_bdy))
793	ALLOCATE( nbondj_bdy_b(nb_bdy))
794	nbondi_bdy_b(:)=2
795	nbondj_bdy_b(:)=2
796
797	! Work out dimensions of boundary data on each neighbour process
798	IF(nbondi .eq. 0) THEN
799	iw_b(1) = jpizoom + nimppt(nowe+1)
800	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
801	is_b(1) = jpjzoom + njmppt(nowe+1)
802	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
803
804	iw_b(2) = jpizoom + nimppt(noea+1)
805	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
806	is_b(2) = jpjzoom + njmppt(noea+1)
807	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
808	ELSEIF(nbondi .eq. 1) THEN
809	iw_b(1) = jpizoom + nimppt(nowe+1)
810	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
811	is_b(1) = jpjzoom + njmppt(nowe+1)
812	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
813	ELSEIF(nbondi .eq. -1) THEN
814	iw_b(2) = jpizoom + nimppt(noea+1)
815	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
816	is_b(2) = jpjzoom + njmppt(noea+1)
817	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
818	ENDIF
819
820	IF(nbondj .eq. 0) THEN
821	iw_b(3) = jpizoom + nimppt(noso+1)
822	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
823	is_b(3) = jpjzoom + njmppt(noso+1)
824	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
825
826	iw_b(4) = jpizoom + nimppt(nono+1)
827	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
828	is_b(4) = jpjzoom + njmppt(nono+1)
829	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
830	ELSEIF(nbondj .eq. 1) THEN
831	iw_b(3) = jpizoom + nimppt(noso+1)
832	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
833	is_b(3) = jpjzoom + njmppt(noso+1)
834	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
835	ELSEIF(nbondj .eq. -1) THEN
836	iw_b(4) = jpizoom + nimppt(nono+1)
837	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
838	is_b(4) = jpjzoom + njmppt(nono+1)
839	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
840	ENDIF
841
842	DO ib_bdy = 1, nb_bdy
843	DO igrd = 1, jpbgrd
844	icount = 0
845	icountr = 0
846	idx_bdy(ib_bdy)%nblen(igrd) = 0
847	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
848	DO ib = 1, nblendta(igrd,ib_bdy)
849	! check that data is in correct order in file
850	ibm1 = MAX(1,ib-1)
851	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
852	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
853	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined ', &
854	& ' in order of distance from edge nbr A utility for re-ordering ', &
855	& ' boundary coordinates and data files exists in the TOOLS/OBC directory')
856	ENDIF
857	ENDIF
858	! check if point is in local domain
859	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
860	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in ) THEN
861	!
862	icount = icount + 1
863	!
864	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
865	ENDIF
866	ENDDO
867	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
868	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
869	ENDDO ! igrd
870
871	! Allocate index arrays for this boundary set
872	!--------------------------------------------
873	ilen1 = MAXVAL(idx_bdy(ib_bdy)%nblen(:))
874	ALLOCATE( idx_bdy(ib_bdy)%nbi(ilen1,jpbgrd) )
875	ALLOCATE( idx_bdy(ib_bdy)%nbj(ilen1,jpbgrd) )
876	ALLOCATE( idx_bdy(ib_bdy)%nbr(ilen1,jpbgrd) )
877	ALLOCATE( idx_bdy(ib_bdy)%nbd(ilen1,jpbgrd) )
878	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
879	ALLOCATE( idx_bdy(ib_bdy)%nbmap(ilen1,jpbgrd) )
880	ALLOCATE( idx_bdy(ib_bdy)%nbw(ilen1,jpbgrd) )
881	ALLOCATE( idx_bdy(ib_bdy)%flagu(ilen1,jpbgrd) )
882	ALLOCATE( idx_bdy(ib_bdy)%flagv(ilen1,jpbgrd) )
883
884	! Dispatch mapping indices and discrete distances on each processor
885	! -----------------------------------------------------------------
886
887	com_east = 0
888	com_west = 0
889	com_south = 0
890	com_north = 0
891
892	com_east_b = 0
893	com_west_b = 0
894	com_south_b = 0
895	com_north_b = 0
896	DO igrd = 1, jpbgrd
897	icount = 0
898	! Loop on rimwidth to ensure outermost points come first in the local arrays.
899	DO ir=1, nn_rimwidth(ib_bdy)
900	DO ib = 1, nblendta(igrd,ib_bdy)
901	! check if point is in local domain and equals ir
902	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
903	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in .AND. &
904	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
905	!
906	icount = icount + 1
907
908	! Rather assume that boundary data indices are given on global domain
909	! TO BE DISCUSSED ?
910	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
911	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
912	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
913	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
914	! check if point has to be sent
915	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
916	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
917	if((com_east .ne. 1) .and. (ii .eq. (nlci-1)) .and. (nbondi .le. 0)) then
918	com_east = 1
919	elseif((com_west .ne. 1) .and. (ii .eq. 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
920	com_west = 1
921	endif
922	if((com_south .ne. 1) .and. (ij .eq. 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
923	com_south = 1
924	elseif((com_north .ne. 1) .and. (ij .eq. (nlcj-1)) .and. (nbondj .le. 0)) then
925	com_north = 1
926	endif
927	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
928	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
929	ENDIF
930	! check if point has to be received from a neighbour
931	IF(nbondi .eq. 0) THEN
932	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
933	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
934	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
935	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
936	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
937	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
938	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
939	com_south = 1
940	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
941	com_north = 1
942	endif
943	com_west_b = 1
944	endif
945	ENDIF
946	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
947	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
948	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
949	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
950	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
951	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
952	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
953	com_south = 1
954	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
955	com_north = 1
956	endif
957	com_east_b = 1
958	endif
959	ENDIF
960	ELSEIF(nbondi .eq. 1) THEN
961	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
962	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
963	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
964	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
965	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
966	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
967	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
968	com_south = 1
969	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
970	com_north = 1
971	endif
972	com_west_b = 1
973	endif
974	ENDIF
975	ELSEIF(nbondi .eq. -1) THEN
976	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
977	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
978	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
979	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
980	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
981	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
982	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
983	com_south = 1
984	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
985	com_north = 1
986	endif
987	com_east_b = 1
988	endif
989	ENDIF
990	ENDIF
991	IF(nbondj .eq. 0) THEN
992	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
993	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
994	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
995	com_north_b = 1
996	ENDIF
997	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
998	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
999	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1000	com_south_b = 1
1001	ENDIF
1002	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1003	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1004	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1005	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1006	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1007	com_south_b = 1
1008	endif
1009	ENDIF
1010	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1011	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1012	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1013	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1014	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1015	com_north_b = 1
1016	endif
1017	ENDIF
1018	ELSEIF(nbondj .eq. 1) THEN
1019	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
1020	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1021	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1022	com_south_b = 1
1023	ENDIF
1024	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1025	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1026	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1027	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1028	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1029	com_south_b = 1
1030	endif
1031	ENDIF
1032	ELSEIF(nbondj .eq. -1) THEN
1033	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1034	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1035	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1036	com_north_b = 1
1037	ENDIF
1038	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1039	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1040	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1041	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1042	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1043	com_north_b = 1
1044	endif
1045	ENDIF
1046	ENDIF
1047	ENDDO
1048	ENDDO
1049	ENDDO
1050
1051	! definition of the i- and j- direction local boundaries arrays
1052	! used for sending the boudaries
1053	IF((com_east .eq. 1) .and. (com_west .eq. 1)) THEN
1054	nbondi_bdy(ib_bdy) = 0
1055	ELSEIF ((com_east .eq. 1) .and. (com_west .eq. 0)) THEN
1056	nbondi_bdy(ib_bdy) = -1
1057	ELSEIF ((com_east .eq. 0) .and. (com_west .eq. 1)) THEN
1058	nbondi_bdy(ib_bdy) = 1
1059	ENDIF
1060
1061	IF((com_north .eq. 1) .and. (com_south .eq. 1)) THEN
1062	nbondj_bdy(ib_bdy) = 0
1063	ELSEIF ((com_north .eq. 1) .and. (com_south .eq. 0)) THEN
1064	nbondj_bdy(ib_bdy) = -1
1065	ELSEIF ((com_north .eq. 0) .and. (com_south .eq. 1)) THEN
1066	nbondj_bdy(ib_bdy) = 1
1067	ENDIF
1068
1069	! definition of the i- and j- direction local boundaries arrays
1070	! used for receiving the boudaries
1071	IF((com_east_b .eq. 1) .and. (com_west_b .eq. 1)) THEN
1072	nbondi_bdy_b(ib_bdy) = 0
1073	ELSEIF ((com_east_b .eq. 1) .and. (com_west_b .eq. 0)) THEN
1074	nbondi_bdy_b(ib_bdy) = -1
1075	ELSEIF ((com_east_b .eq. 0) .and. (com_west_b .eq. 1)) THEN
1076	nbondi_bdy_b(ib_bdy) = 1
1077	ENDIF
1078
1079	IF((com_north_b .eq. 1) .and. (com_south_b .eq. 1)) THEN
1080	nbondj_bdy_b(ib_bdy) = 0
1081	ELSEIF ((com_north_b .eq. 1) .and. (com_south_b .eq. 0)) THEN
1082	nbondj_bdy_b(ib_bdy) = -1
1083	ELSEIF ((com_north_b .eq. 0) .and. (com_south_b .eq. 1)) THEN
1084	nbondj_bdy_b(ib_bdy) = 1
1085	ENDIF
1086
1087	! Compute rim weights for FRS scheme
1088	! ----------------------------------
1089	DO igrd = 1, jpbgrd
1090	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1091	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1092	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) ! tanh formulation
1093	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))**2. ! quadratic
1094	! idx_bdy(ib_bdy)%nbw(ib,igrd) = FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)) ! linear
1095	END DO
1096	END DO
1097
1098	! Compute damping coefficients
1099	! ----------------------------
1100	DO igrd = 1, jpbgrd
1101	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1102	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1103	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1104	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1105	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1106	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1107	END DO
1108	END DO
1109
1110	ENDDO
1111
1112	! ------------------------------------------------------
1113	! Initialise masks and find normal/tangential directions
1114	! ------------------------------------------------------
1115
1116	! Read global 2D mask at T-points: bdytmask
1117	! -----------------------------------------
1118	! bdytmask = 1 on the computational domain AND on open boundaries
1119	! = 0 elsewhere
1120
1121	IF( ln_mask_file ) THEN
1122	CALL iom_open( cn_mask_file, inum )
1123	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1124	CALL iom_close( inum )
1125
1126	! Derive mask on U and V grid from mask on T grid
1127	bdyumask(:,:) = 0.e0
1128	bdyvmask(:,:) = 0.e0
1129	DO ij=1, jpjm1
1130	DO ii=1, jpim1
1131	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1132	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1133	END DO
1134	END DO
1135	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1136
1137
1138	! Mask corrections
1139	! ----------------
1140	DO ik = 1, jpkm1
1141	DO ij = 1, jpj
1142	DO ii = 1, jpi
1143	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
1144	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
1145	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
1146	bmask(ii,ij) = bmask(ii,ij) * bdytmask(ii,ij)
1147	END DO
1148	END DO
1149	END DO
1150
1151	DO ik = 1, jpkm1
1152	DO ij = 2, jpjm1
1153	DO ii = 2, jpim1
1154	fmask(ii,ij,ik) = fmask(ii,ij,ik) * bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
1155	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
1156	END DO
1157	END DO
1158	END DO
1159
1160	tmask_i (:,:) = tmask(:,:,1) * tmask_i(:,:)
1161
1162	ENDIF ! ln_mask_file=.TRUE.
1163
1164	bdytmask(:,:) = tmask(:,:,1)
1165	IF( .not. ln_mask_file ) THEN
1166	! If .not. ln_mask_file then we need to derive mask on U and V grid
1167	! from mask on T grid here.
1168	bdyumask(:,:) = 0.e0
1169	bdyvmask(:,:) = 0.e0
1170	DO ij=1, jpjm1
1171	DO ii=1, jpim1
1172	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1173	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1174	END DO
1175	END DO
1176	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1177	ENDIF
1178
1179	! bdy masks and bmask are now set to zero on boundary points:
1180	igrd = 1 ! In the free surface case, bmask is at T-points
1181	DO ib_bdy = 1, nb_bdy
1182	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1183	bmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1184	ENDDO
1185	ENDDO
1186	!
1187	igrd = 1
1188	DO ib_bdy = 1, nb_bdy
1189	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1190	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1191	ENDDO
1192	ENDDO
1193	!
1194	igrd = 2
1195	DO ib_bdy = 1, nb_bdy
1196	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1197	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1198	ENDDO
1199	ENDDO
1200	!
1201	igrd = 3
1202	DO ib_bdy = 1, nb_bdy
1203	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1204	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1205	ENDDO
1206	ENDDO
1207
1208	! For the flagu/flagv calculation below we require a version of fmask without
1209	! the land boundary condition (shlat) included:
1210	CALL wrk_alloc(jpi,jpj,zfmask)
1211	DO ij = 2, jpjm1
1212	DO ii = 2, jpim1
1213	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1214	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1215	END DO
1216	END DO
1217
1218	! Lateral boundary conditions
1219	CALL lbc_lnk( zfmask , 'F', 1. )
1220	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1221	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1222
1223	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1224
1225	idx_bdy(ib_bdy)%flagu(:,:) = 0.e0
1226	idx_bdy(ib_bdy)%flagv(:,:) = 0.e0
1227	icount = 0
1228
1229	! Calculate relationship of U direction to the local orientation of the boundary
1230	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1231	! flagu = 0 : u is tangential
1232	! flagu = 1 : u is normal to the boundary and is direction is inward
1233
1234	DO igrd = 1,jpbgrd
1235	SELECT CASE( igrd )
1236	CASE( 1 )
1237	pmask => umask(:,:,1)
1238	i_offset = 0
1239	CASE( 2 )
1240	pmask => bdytmask
1241	i_offset = 1
1242	CASE( 3 )
1243	pmask => zfmask(:,:)
1244	i_offset = 0
1245	END SELECT
1246	icount = 0
1247	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1248	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1249	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1250	zefl = pmask(nbi+i_offset-1,nbj)
1251	zwfl = pmask(nbi+i_offset,nbj)
1252	! This error check only works if you are using the bdyXmask arrays
1253	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1254	icount = icount + 1
1255	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1256	ELSE
1257	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1258	ENDIF
1259	END DO
1260	IF( icount /= 0 ) THEN
1261	IF(lwp) WRITE(numout,*)
1262	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1263	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1264	IF(lwp) WRITE(numout,*) ' ========== '
1265	IF(lwp) WRITE(numout,*)
1266	nstop = nstop + 1
1267	ENDIF
1268	END DO
1269
1270	! Calculate relationship of V direction to the local orientation of the boundary
1271	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1272	! flagv = 0 : v is tangential
1273	! flagv = 1 : v is normal to the boundary and is direction is inward
1274
1275	DO igrd = 1,jpbgrd
1276	SELECT CASE( igrd )
1277	CASE( 1 )
1278	pmask => vmask(:,:,1)
1279	j_offset = 0
1280	CASE( 2 )
1281	pmask => zfmask(:,:)
1282	j_offset = 0
1283	CASE( 3 )
1284	pmask => bdytmask
1285	j_offset = 1
1286	END SELECT
1287	icount = 0
1288	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1289	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1290	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1291	znfl = pmask(nbi,nbj+j_offset-1 )
1292	zsfl = pmask(nbi,nbj+j_offset)
1293	! This error check only works if you are using the bdyXmask arrays
1294	IF( j_offset == 1 .and. znfl + zsfl == 2 ) THEN
1295	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1296	icount = icount + 1
1297	ELSE
1298	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1299	END IF
1300	END DO
1301	IF( icount /= 0 ) THEN
1302	IF(lwp) WRITE(numout,*)
1303	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1304	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1305	IF(lwp) WRITE(numout,*) ' ========== '
1306	IF(lwp) WRITE(numout,*)
1307	nstop = nstop + 1
1308	ENDIF
1309	END DO
1310
1311	END DO
1312
1313	! Compute total lateral surface for volume correction:
1314	! ----------------------------------------------------
1315	! JC: this must be done at each time step with key_vvl
1316	bdysurftot = 0.e0
1317	IF( ln_vol ) THEN
1318	igrd = 2 ! Lateral surface at U-points
1319	DO ib_bdy = 1, nb_bdy
1320	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1321	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1322	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1323	flagu => idx_bdy(ib_bdy)%flagu(ib,igrd)
1324	bdysurftot = bdysurftot + hu (nbi , nbj) &
1325	& * e2u (nbi , nbj) * ABS( flagu ) &
1326	& * tmask_i(nbi , nbj) &
1327	& * tmask_i(nbi+1, nbj)
1328	ENDDO
1329	ENDDO
1330
1331	igrd=3 ! Add lateral surface at V-points
1332	DO ib_bdy = 1, nb_bdy
1333	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1334	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1335	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1336	flagv => idx_bdy(ib_bdy)%flagv(ib,igrd)
1337	bdysurftot = bdysurftot + hv (nbi, nbj ) &
1338	& * e1v (nbi, nbj ) * ABS( flagv ) &
1339	& * tmask_i(nbi, nbj ) &
1340	& * tmask_i(nbi, nbj+1)
1341	ENDDO
1342	ENDDO
1343	!
1344	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
1345	END IF
1346	!
1347	! Tidy up
1348	!--------
1349	IF (nb_bdy>0) THEN
1350	DEALLOCATE(nbidta, nbjdta, nbrdta)
1351	ENDIF
1352
1353	CALL wrk_dealloc(jpi,jpj,zfmask)
1354
1355	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1356
1357	END SUBROUTINE bdy_init
1358
1359	SUBROUTINE bdy_ctl_seg
1360	!!----------------------------------------------------------------------
1361	!! * ROUTINE bdy_ctl_seg *
1362	!!
1363	!! ** Purpose : Check straight open boundary segments location
1364	!!
1365	!! ** Method : - Look for open boundary corners
1366	!! - Check that segments start or end on land
1367	!!----------------------------------------------------------------------
1368	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1369	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1370	REAL(wp), DIMENSION(2) :: ztestmask
1371	!!----------------------------------------------------------------------
1372	!
1373	IF (lwp) WRITE(numout,*) ' '
1374	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1375	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1376	!
1377	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1378	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1379	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1380	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1381	! 1. Check bounds
1382	!----------------
1383	DO ib = 1, nbdysegn
1384	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1385	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1386	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1387	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1388	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1389	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1390	END DO
1391	!
1392	DO ib = 1, nbdysegs
1393	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1394	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1395	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1396	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1397	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1398	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1399	END DO
1400	!
1401	DO ib = 1, nbdysege
1402	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1403	IF ((jpieob(ib).ge.jpiglo-1).or.&
1404	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1405	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1406	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1407	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1408	END DO
1409	!
1410	DO ib = 1, nbdysegw
1411	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1412	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1413	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1414	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1415	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1416	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1417	ENDDO
1418	!
1419	!
1420	! 2. Look for segment crossings
1421	!------------------------------
1422	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1423	!
1424	itest = 0 ! corner number
1425	!
1426	! flag to detect if start or end of open boundary belongs to a corner
1427	! if not (=0), it must be on land.
1428	! if a corner is detected, save bdy package number for further tests
1429	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1430	! South/West crossings
1431	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1432	DO ib1 = 1, nbdysegw
1433	DO ib2 = 1, nbdysegs
1434	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1435	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1436	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1437	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1438	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1439	! We have a possible South-West corner
1440	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1441	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1442	icornw(ib1,1) = npckgs(ib2)
1443	icorns(ib2,1) = npckgw(ib1)
1444	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1445	IF(lwp) WRITE(numout,*)
1446	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1447	& jpisft(ib2), jpjwft(ib1)
1448	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1449	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1450	& ' and South segment: ',npckgs(ib2)
1451	IF(lwp) WRITE(numout,*)
1452	nstop = nstop + 1
1453	ELSE
1454	IF(lwp) WRITE(numout,*)
1455	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
1456	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1457	& ' and South segment: ',npckgs(ib2)
1458	IF(lwp) WRITE(numout,*)
1459	nstop = nstop+1
1460	END IF
1461	END IF
1462	END DO
1463	END DO
1464	END IF
1465	!
1466	! South/East crossings
1467	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1468	DO ib1 = 1, nbdysege
1469	DO ib2 = 1, nbdysegs
1470	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1471	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1472	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1473	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1474	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1475	! We have a possible South-East corner
1476	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1477	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1478	icorne(ib1,1) = npckgs(ib2)
1479	icorns(ib2,2) = npckge(ib1)
1480	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1481	IF(lwp) WRITE(numout,*)
1482	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1483	& jpisdt(ib2), jpjeft(ib1)
1484	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1485	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1486	& ' and South segment: ',npckgs(ib2)
1487	IF(lwp) WRITE(numout,*)
1488	nstop = nstop + 1
1489	ELSE
1490	IF(lwp) WRITE(numout,*)
1491	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
1492	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1493	& ' and South segment: ',npckgs(ib2)
1494	IF(lwp) WRITE(numout,*)
1495	nstop = nstop + 1
1496	END IF
1497	END IF
1498	END DO
1499	END DO
1500	END IF
1501	!
1502	! North/West crossings
1503	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1504	DO ib1 = 1, nbdysegw
1505	DO ib2 = 1, nbdysegn
1506	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1507	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1508	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1509	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1510	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1511	! We have a possible North-West corner
1512	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1513	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1514	icornw(ib1,2) = npckgn(ib2)
1515	icornn(ib2,1) = npckgw(ib1)
1516	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1517	IF(lwp) WRITE(numout,*)
1518	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1519	& jpinft(ib2), jpjwdt(ib1)
1520	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1521	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1522	& ' and North segment: ',npckgn(ib2)
1523	IF(lwp) WRITE(numout,*)
1524	nstop = nstop + 1
1525	ELSE
1526	IF(lwp) WRITE(numout,*)
1527	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1528	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1529	& ' and North segment: ',npckgn(ib2)
1530	IF(lwp) WRITE(numout,*)
1531	nstop = nstop + 1
1532	END IF
1533	END IF
1534	END DO
1535	END DO
1536	END IF
1537	!
1538	! North/East crossings
1539	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1540	DO ib1 = 1, nbdysege
1541	DO ib2 = 1, nbdysegn
1542	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1543	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1544	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1545	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1546	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1547	! We have a possible North-East corner
1548	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1549	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1550	icorne(ib1,2) = npckgn(ib2)
1551	icornn(ib2,2) = npckge(ib1)
1552	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1553	IF(lwp) WRITE(numout,*)
1554	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1555	& jpindt(ib2), jpjedt(ib1)
1556	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1557	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1558	& ' and North segment: ',npckgn(ib2)
1559	IF(lwp) WRITE(numout,*)
1560	nstop = nstop + 1
1561	ELSE
1562	IF(lwp) WRITE(numout,*)
1563	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1564	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1565	& ' and North segment: ',npckgn(ib2)
1566	IF(lwp) WRITE(numout,*)
1567	nstop = nstop + 1
1568	END IF
1569	END IF
1570	END DO
1571	END DO
1572	END IF
1573	!
1574	! 3. Check if segment extremities are on land
1575	!--------------------------------------------
1576	!
1577	! West segments
1578	DO ib = 1, nbdysegw
1579	! get mask at boundary extremities:
1580	ztestmask(1:2)=0.
1581	DO ji = 1, jpi
1582	DO jj = 1, jpj
1583	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1584	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1585	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1586	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1587	END DO
1588	END DO
1589	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1590
1591	IF (ztestmask(1)==1) THEN
1592	IF (icornw(ib,1)==0) THEN
1593	IF(lwp) WRITE(numout,*)
1594	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1595	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1596	IF(lwp) WRITE(numout,*)
1597	nstop = nstop + 1
1598	ELSE
1599	! This is a corner
1600	WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1601	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1602	itest=itest+1
1603	ENDIF
1604	ENDIF
1605	IF (ztestmask(2)==1) THEN
1606	IF (icornw(ib,2)==0) THEN
1607	IF(lwp) WRITE(numout,*)
1608	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1609	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1610	IF(lwp) WRITE(numout,*)
1611	nstop = nstop + 1
1612	ELSE
1613	! This is a corner
1614	WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1615	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1616	itest=itest+1
1617	ENDIF
1618	ENDIF
1619	END DO
1620	!
1621	! East segments
1622	DO ib = 1, nbdysege
1623	! get mask at boundary extremities:
1624	ztestmask(1:2)=0.
1625	DO ji = 1, jpi
1626	DO jj = 1, jpj
1627	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1628	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1629	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1630	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1631	END DO
1632	END DO
1633	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1634
1635	IF (ztestmask(1)==1) THEN
1636	IF (icorne(ib,1)==0) THEN
1637	IF(lwp) WRITE(numout,*)
1638	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1639	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1640	IF(lwp) WRITE(numout,*)
1641	nstop = nstop + 1
1642	ELSE
1643	! This is a corner
1644	WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1645	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1646	itest=itest+1
1647	ENDIF
1648	ENDIF
1649	IF (ztestmask(2)==1) THEN
1650	IF (icorne(ib,2)==0) THEN
1651	IF(lwp) WRITE(numout,*)
1652	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1653	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1654	IF(lwp) WRITE(numout,*)
1655	nstop = nstop + 1
1656	ELSE
1657	! This is a corner
1658	WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1659	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1660	itest=itest+1
1661	ENDIF
1662	ENDIF
1663	END DO
1664	!
1665	! South segments
1666	DO ib = 1, nbdysegs
1667	! get mask at boundary extremities:
1668	ztestmask(1:2)=0.
1669	DO ji = 1, jpi
1670	DO jj = 1, jpj
1671	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1672	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1673	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1674	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1675	END DO
1676	END DO
1677	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1678
1679	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1680	IF(lwp) WRITE(numout,*)
1681	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1682	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1683	IF(lwp) WRITE(numout,*)
1684	nstop = nstop + 1
1685	ENDIF
1686	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1687	IF(lwp) WRITE(numout,*)
1688	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1689	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1690	IF(lwp) WRITE(numout,*)
1691	nstop = nstop + 1
1692	ENDIF
1693	END DO
1694	!
1695	! North segments
1696	DO ib = 1, nbdysegn
1697	! get mask at boundary extremities:
1698	ztestmask(1:2)=0.
1699	DO ji = 1, jpi
1700	DO jj = 1, jpj
1701	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1702	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1703	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1704	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1705	END DO
1706	END DO
1707	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1708
1709	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1710	IF(lwp) WRITE(numout,*)
1711	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1712	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1713	IF(lwp) WRITE(numout,*)
1714	nstop = nstop + 1
1715	ENDIF
1716	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1717	IF(lwp) WRITE(numout,*)
1718	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1719	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1720	IF(lwp) WRITE(numout,*)
1721	nstop = nstop + 1
1722	ENDIF
1723	END DO
1724	!
1725	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1726	!
1727	! Other tests TBD:
1728	! segments completly on land
1729	! optimized open boundary array length according to landmask
1730	! Nudging layers that overlap with interior domain
1731	!
1732	END SUBROUTINE bdy_ctl_seg
1733
1734	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1735	!!----------------------------------------------------------------------
1736	!! * ROUTINE bdy_ctl_corn *
1737	!!
1738	!! ** Purpose : Check numerical schemes consistency between
1739	!! segments having a common corner
1740	!!
1741	!! ** Method :
1742	!!----------------------------------------------------------------------
1743	INTEGER, INTENT(in) :: ib1, ib2
1744	INTEGER :: itest
1745	!!----------------------------------------------------------------------
1746	itest = 0
1747
1748	IF (cn_dyn2d(ib1)/=cn_dyn2d(ib2)) itest = itest + 1
1749	IF (cn_dyn3d(ib1)/=cn_dyn3d(ib2)) itest = itest + 1
1750	IF (cn_tra(ib1)/=cn_tra(ib2)) itest = itest + 1
1751	!
1752	IF (nn_dyn2d_dta(ib1)/=nn_dyn2d_dta(ib2)) itest = itest + 1
1753	IF (nn_dyn3d_dta(ib1)/=nn_dyn3d_dta(ib2)) itest = itest + 1
1754	IF (nn_tra_dta(ib1)/=nn_tra_dta(ib2)) itest = itest + 1
1755	!
1756	IF (nn_rimwidth(ib1)/=nn_rimwidth(ib2)) itest = itest + 1
1757	!
1758	IF ( itest>0 ) THEN
1759	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1760	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1761	IF(lwp) WRITE(numout,*)
1762	nstop = nstop + 1
1763	ENDIF
1764	!
1765	END SUBROUTINE bdy_ctl_corn
1766
1767	#else
1768	!!---------------------------------------------------------------------------------
1769	!! Dummy module NO open boundaries
1770	!!---------------------------------------------------------------------------------
1771	CONTAINS
1772	SUBROUTINE bdy_init ! Dummy routine
1773	END SUBROUTINE bdy_init
1774	#endif
1775
1776	!!=================================================================================
1777	END MODULE bdyini

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