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bdyini.F90 @ 7029

Last change on this file since 7029 was 7029, checked in by jamesharle, 8 years ago
Adding ORCHESTRA configuration Merging with branches/2016/dev_r5549_BDY_ZEROGRAD Merging with branches/2016/dev_r5840_BDY_MSK Merging with branches/2014/dev_r4621_NOC4_BDY_VERT_INTERP
File size: 83.2 KB

Line
1	MODULE bdyini
2	!!======================================================================
3	!! * MODULE bdyini *
4	!! Unstructured open boundaries : initialisation
5	!!======================================================================
6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
8	!! - ! 2007-01 (D. Storkey) Tidal forcing
9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
10	!! 3.3 ! 2010-09 (E.O'Dea) updates for Shelf configurations
11	!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
12	!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
13	!! 3.4 ! 2012 (J. Chanut) straight open boundary case update
14	!! 3.5 ! 2012 (S. Mocavero, I. Epicoco) optimization of BDY communications
15	!!----------------------------------------------------------------------
16	#if defined key_bdy
17	!!----------------------------------------------------------------------
18	!! 'key_bdy' Unstructured Open Boundary Conditions
19	!!----------------------------------------------------------------------
20	!! bdy_init : Initialization of unstructured open boundaries
21	!!----------------------------------------------------------------------
22	USE oce ! ocean dynamics and tracers variables
23	USE dom_oce ! ocean space and time domain
24	USE bdy_oce ! unstructured open boundary conditions
25	USE sbctide , ONLY: lk_tide ! Tidal forcing or not
26	USE phycst , ONLY: rday
27	!
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 wrk_nemo ! Memory Allocation
33	USE timing ! Timing
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 3.7 , NEMO Consortium (2015)
51	!! $Id: bdyini.F90 6808 2016-07-19 08:38:35Z jamesharle $
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
69	! local variables
70	!-------------------
71	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
72	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
73	INTEGER :: iwe, ies, iso, ino, inum, id_dummy ! - -
74	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
75	INTEGER :: jpbdtau, jpbdtas ! - -
76	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
77	INTEGER :: i_offset, j_offset ! - -
78	INTEGER , POINTER :: nbi, nbj, nbr ! short cuts
79	REAL(wp), POINTER :: flagu, flagv ! - -
80	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
81	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
82	INTEGER, DIMENSION (2) :: kdimsz
83	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
84	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
85	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
86	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
87	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
88	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
89	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
90	REAL(wp), POINTER, DIMENSION(:,:) :: zfmask ! temporary fmask array excluding coastal boundary condition (shlat)
91	!!
92	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile ! Namelist variables
93	CHARACTER(LEN=1) :: ctypebdy ! - -
94	INTEGER :: nbdyind, nbdybeg, nbdyend
95	!!
96	NAMELIST/nambdy/ nb_bdy, ln_coords_file, cn_coords_file, &
97	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
98	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
99	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
100	& cn_ice_lim, nn_ice_lim_dta, &
101	& rn_ice_tem, rn_ice_sal, rn_ice_age, &
102	& ln_vol, nn_volctl, nn_rimwidth, nb_jpk_bdy
103	!
104	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
105	INTEGER :: ios ! Local integer output status for namelist read
106	!!----------------------------------------------------------------------
107	!
108	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
109	!
110	IF(lwp) WRITE(numout,*)
111	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
112	IF(lwp) WRITE(numout,*) '~~~~~~~~'
113	!
114	! IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
115	! & ' and general open boundary condition are not compatible' )
116
117	cgrid = (/'t','u','v'/)
118
119	! ------------------------
120	! Read namelist parameters
121	! ------------------------
122	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
123	READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 901)
124	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp )
125	!
126	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
127	READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 902 )
128	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp )
129	IF(lwm) WRITE ( numond, nambdy )
130
131	! -----------------------------------------
132	! Check and write out namelist parameters
133	! -----------------------------------------
134	! ! control prints
135	IF(lwp) WRITE(numout,*) ' nambdy'
136
137	IF( nb_bdy == 0 ) THEN
138	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
139	ELSE
140	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ', nb_bdy
141	ENDIF
142
143	DO ib_bdy = 1,nb_bdy
144	IF(lwp) WRITE(numout,*) ' '
145	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
146
147	IF( ln_coords_file(ib_bdy) ) THEN
148	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
149	ELSE
150	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
151	ENDIF
152	IF(lwp) WRITE(numout,*)
153
154	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
155	SELECT CASE( cn_dyn2d(ib_bdy) )
156	CASE( 'none' )
157	IF(lwp) WRITE(numout,*) ' no open boundary condition'
158	dta_bdy(ib_bdy)%ll_ssh = .false.
159	dta_bdy(ib_bdy)%ll_u2d = .false.
160	dta_bdy(ib_bdy)%ll_v2d = .false.
161	CASE( 'frs' )
162	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
163	dta_bdy(ib_bdy)%ll_ssh = .false.
164	dta_bdy(ib_bdy)%ll_u2d = .true.
165	dta_bdy(ib_bdy)%ll_v2d = .true.
166	CASE( 'flather' )
167	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
168	dta_bdy(ib_bdy)%ll_ssh = .true.
169	dta_bdy(ib_bdy)%ll_u2d = .true.
170	dta_bdy(ib_bdy)%ll_v2d = .true.
171	CASE( 'orlanski' )
172	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
173	dta_bdy(ib_bdy)%ll_ssh = .false.
174	dta_bdy(ib_bdy)%ll_u2d = .true.
175	dta_bdy(ib_bdy)%ll_v2d = .true.
176	CASE( 'orlanski_npo' )
177	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
178	dta_bdy(ib_bdy)%ll_ssh = .false.
179	dta_bdy(ib_bdy)%ll_u2d = .true.
180	dta_bdy(ib_bdy)%ll_v2d = .true.
181	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
182	END SELECT
183	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
184	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
185	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
186	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
187	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
188	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
189	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
190	END SELECT
191	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
192	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
193	ENDIF
194	ENDIF
195	IF(lwp) WRITE(numout,*)
196
197	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
198	SELECT CASE( cn_dyn3d(ib_bdy) )
199	CASE('none')
200	IF(lwp) WRITE(numout,*) ' no open boundary condition'
201	dta_bdy(ib_bdy)%ll_u3d = .false.
202	dta_bdy(ib_bdy)%ll_v3d = .false.
203	CASE('frs')
204	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
205	dta_bdy(ib_bdy)%ll_u3d = .true.
206	dta_bdy(ib_bdy)%ll_v3d = .true.
207	CASE('specified')
208	IF(lwp) WRITE(numout,*) ' Specified value'
209	dta_bdy(ib_bdy)%ll_u3d = .true.
210	dta_bdy(ib_bdy)%ll_v3d = .true.
211	CASE('neumann')
212	IF(lwp) WRITE(numout,*) ' Neumann conditions'
213	dta_bdy(ib_bdy)%ll_u3d = .false.
214	dta_bdy(ib_bdy)%ll_v3d = .false.
215	CASE('zerograd')
216	IF(lwp) WRITE(numout,*) ' Zero gradient for baroclinic velocities'
217	dta_bdy(ib_bdy)%ll_u3d = .false.
218	dta_bdy(ib_bdy)%ll_v3d = .false.
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	IF( nb_jpk_bdy > 0 ) THEN
389	IF(lwp) WRITE(numout,) ' open boundary will be interpolate in the vertical onto the native grid *'
390	ELSE
391	IF(lwp) WRITE(numout,) ' open boundary will be read straight onto the native grid without vertical interpolation *'
392	ENDIF
393	ENDIF
394
395	! -------------------------------------------------
396	! Initialise indices arrays for open boundaries
397	! -------------------------------------------------
398
399	! Work out global dimensions of boundary data
400	! ---------------------------------------------
401	REWIND( numnam_cfg )
402
403	nblendta(:,:) = 0
404	nbdysege = 0
405	nbdysegw = 0
406	nbdysegn = 0
407	nbdysegs = 0
408	icount = 0 ! count user defined segments
409	! Dimensions below are used to allocate arrays to read external data
410	jpbdtas = 1 ! Maximum size of boundary data (structured case)
411	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
412
413	DO ib_bdy = 1, nb_bdy
414
415	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
416
417	icount = icount + 1
418	! No REWIND here because may need to read more than one nambdy_index namelist.
419	! Read only namelist_cfg to avoid unseccessfull overwrite
420	!! REWIND( numnam_ref ) ! Namelist nambdy_index in reference namelist : Open boundaries indexes
421	!! READ ( numnam_ref, namrun, IOSTAT = ios, ERR = 903)
422	!!903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in reference namelist', lwp )
423
424	!! REWIND( numnam_cfg ) ! Namelist nambdy_index in configuration namelist : Open boundaries indexes
425	READ ( numnam_cfg, nambdy_index, IOSTAT = ios, ERR = 904 )
426	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in configuration namelist', lwp )
427	IF(lwm) WRITE ( numond, nambdy_index )
428
429	SELECT CASE ( TRIM(ctypebdy) )
430	CASE( 'N' )
431	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
432	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
433	nbdybeg = 2
434	nbdyend = jpiglo - 1
435	ENDIF
436	nbdysegn = nbdysegn + 1
437	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
438	jpjnob(nbdysegn) = nbdyind
439	jpindt(nbdysegn) = nbdybeg
440	jpinft(nbdysegn) = nbdyend
441	!
442	CASE( 'S' )
443	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
444	nbdyind = 2 ! set boundary to whole side of model domain.
445	nbdybeg = 2
446	nbdyend = jpiglo - 1
447	ENDIF
448	nbdysegs = nbdysegs + 1
449	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
450	jpjsob(nbdysegs) = nbdyind
451	jpisdt(nbdysegs) = nbdybeg
452	jpisft(nbdysegs) = nbdyend
453	!
454	CASE( 'E' )
455	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
456	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
457	nbdybeg = 2
458	nbdyend = jpjglo - 1
459	ENDIF
460	nbdysege = nbdysege + 1
461	npckge(nbdysege) = ib_bdy ! Save bdy package number
462	jpieob(nbdysege) = nbdyind
463	jpjedt(nbdysege) = nbdybeg
464	jpjeft(nbdysege) = nbdyend
465	!
466	CASE( 'W' )
467	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
468	nbdyind = 2 ! set boundary to whole side of model domain.
469	nbdybeg = 2
470	nbdyend = jpjglo - 1
471	ENDIF
472	nbdysegw = nbdysegw + 1
473	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
474	jpiwob(nbdysegw) = nbdyind
475	jpjwdt(nbdysegw) = nbdybeg
476	jpjwft(nbdysegw) = nbdyend
477	!
478	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
479	END SELECT
480
481	! For simplicity we assume that in case of straight bdy, arrays have the same length
482	! (even if it is true that last tangential velocity points
483	! are useless). This simplifies a little bit boundary data format (and agrees with format
484	! used so far in obc package)
485
486	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
487	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
488	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
489	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
490
491	ELSE ! Read size of arrays in boundary coordinates file.
492	CALL iom_open( cn_coords_file(ib_bdy), inum )
493	DO igrd = 1, jpbgrd
494	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
495	!clem nblendta(igrd,ib_bdy) = kdimsz(1)
496	!clem jpbdtau = MAX(jpbdtau, kdimsz(1))
497	nblendta(igrd,ib_bdy) = MAXVAL(kdimsz)
498	jpbdtau = MAX(jpbdtau, MAXVAL(kdimsz))
499	END DO
500	CALL iom_close( inum )
501	!
502	ENDIF
503	!
504	END DO ! ib_bdy
505
506	IF (nb_bdy>0) THEN
507	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
508
509	! Allocate arrays
510	!---------------
511	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
512	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
513
514	IF( nb_jpk_bdy>0 ) THEN
515	ALLOCATE( dta_global(jpbdtau, 1, nb_jpk_bdy) )
516	ALLOCATE( dta_global_z(jpbdtau, 1, nb_jpk_bdy) )
517	ALLOCATE( dta_global_dz(jpbdtau, 1, nb_jpk_bdy) )
518	ELSE
519	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
520	ALLOCATE( dta_global_z(jpbdtau, 1, jpk) ) ! needed ?? TODO
521	ALLOCATE( dta_global_dz(jpbdtau, 1, jpk) )! needed ?? TODO
522	ENDIF
523
524	IF ( icount>0 ) THEN
525	IF( nb_jpk_bdy>0 ) THEN
526	ALLOCATE( dta_global2(jpbdtas, nrimmax, nb_jpk_bdy) )
527	ALLOCATE( dta_global2_z(jpbdtas, nrimmax, nb_jpk_bdy) )
528	ALLOCATE( dta_global2_dz(jpbdtas, nrimmax, nb_jpk_bdy) )
529	ELSE
530	ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
531	ALLOCATE( dta_global2_z(jpbdtas, nrimmax, jpk) ) ! needed ?? TODO
532	ALLOCATE( dta_global2_dz(jpbdtas, nrimmax, jpk) )! needed ?? TODO
533	ENDIF
534	ENDIF
535	!
536	ENDIF
537
538	! Now look for crossings in user (namelist) defined open boundary segments:
539	!--------------------------------------------------------------------------
540	IF( icount>0 ) CALL bdy_ctl_seg
541
542	! Calculate global boundary index arrays or read in from file
543	!------------------------------------------------------------
544	! 1. Read global index arrays from boundary coordinates file.
545	DO ib_bdy = 1, nb_bdy
546	!
547	IF( ln_coords_file(ib_bdy) ) THEN
548	!
549	CALL iom_open( cn_coords_file(ib_bdy), inum )
550	DO igrd = 1, jpbgrd
551	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
552	DO ii = 1,nblendta(igrd,ib_bdy)
553	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
554	END DO
555	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
556	DO ii = 1,nblendta(igrd,ib_bdy)
557	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
558	END DO
559	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
560	DO ii = 1,nblendta(igrd,ib_bdy)
561	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
562	END DO
563	!
564	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
565	IF(lwp) WRITE(numout,*)
566	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
567	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
568	IF (ibr_max < nn_rimwidth(ib_bdy)) &
569	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
570	END DO
571	CALL iom_close( inum )
572	!
573	ENDIF
574	!
575	END DO
576
577	! 2. Now fill indices corresponding to straight open boundary arrays:
578	! East
579	!-----
580	DO iseg = 1, nbdysege
581	ib_bdy = npckge(iseg)
582	!
583	! ------------ T points -------------
584	igrd=1
585	icount=0
586	DO ir = 1, nn_rimwidth(ib_bdy)
587	DO ij = jpjedt(iseg), jpjeft(iseg)
588	icount = icount + 1
589	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
590	nbjdta(icount, igrd, ib_bdy) = ij
591	nbrdta(icount, igrd, ib_bdy) = ir
592	ENDDO
593	ENDDO
594	!
595	! ------------ U points -------------
596	igrd=2
597	icount=0
598	DO ir = 1, nn_rimwidth(ib_bdy)
599	DO ij = jpjedt(iseg), jpjeft(iseg)
600	icount = icount + 1
601	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
602	nbjdta(icount, igrd, ib_bdy) = ij
603	nbrdta(icount, igrd, ib_bdy) = ir
604	ENDDO
605	ENDDO
606	!
607	! ------------ V points -------------
608	igrd=3
609	icount=0
610	DO ir = 1, nn_rimwidth(ib_bdy)
611	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
612	DO ij = jpjedt(iseg), jpjeft(iseg)
613	icount = icount + 1
614	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
615	nbjdta(icount, igrd, ib_bdy) = ij
616	nbrdta(icount, igrd, ib_bdy) = ir
617	ENDDO
618	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
619	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
620	ENDDO
621	ENDDO
622	!
623	! West
624	!-----
625	DO iseg = 1, nbdysegw
626	ib_bdy = npckgw(iseg)
627	!
628	! ------------ T points -------------
629	igrd=1
630	icount=0
631	DO ir = 1, nn_rimwidth(ib_bdy)
632	DO ij = jpjwdt(iseg), jpjwft(iseg)
633	icount = icount + 1
634	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
635	nbjdta(icount, igrd, ib_bdy) = ij
636	nbrdta(icount, igrd, ib_bdy) = ir
637	ENDDO
638	ENDDO
639	!
640	! ------------ U points -------------
641	igrd=2
642	icount=0
643	DO ir = 1, nn_rimwidth(ib_bdy)
644	DO ij = jpjwdt(iseg), jpjwft(iseg)
645	icount = icount + 1
646	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
647	nbjdta(icount, igrd, ib_bdy) = ij
648	nbrdta(icount, igrd, ib_bdy) = ir
649	ENDDO
650	ENDDO
651	!
652	! ------------ V points -------------
653	igrd=3
654	icount=0
655	DO ir = 1, nn_rimwidth(ib_bdy)
656	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
657	DO ij = jpjwdt(iseg), jpjwft(iseg)
658	icount = icount + 1
659	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
660	nbjdta(icount, igrd, ib_bdy) = ij
661	nbrdta(icount, igrd, ib_bdy) = ir
662	ENDDO
663	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
664	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
665	ENDDO
666	ENDDO
667	!
668	! North
669	!-----
670	DO iseg = 1, nbdysegn
671	ib_bdy = npckgn(iseg)
672	!
673	! ------------ T points -------------
674	igrd=1
675	icount=0
676	DO ir = 1, nn_rimwidth(ib_bdy)
677	DO ii = jpindt(iseg), jpinft(iseg)
678	icount = icount + 1
679	nbidta(icount, igrd, ib_bdy) = ii
680	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
681	nbrdta(icount, igrd, ib_bdy) = ir
682	ENDDO
683	ENDDO
684	!
685	! ------------ U points -------------
686	igrd=2
687	icount=0
688	DO ir = 1, nn_rimwidth(ib_bdy)
689	! DO ii = jpindt(iseg), jpinft(iseg) - 1
690	DO ii = jpindt(iseg), jpinft(iseg)
691	icount = icount + 1
692	nbidta(icount, igrd, ib_bdy) = ii
693	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
694	nbrdta(icount, igrd, ib_bdy) = ir
695	ENDDO
696	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
697	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
698	ENDDO
699	!
700	! ------------ V points -------------
701	igrd=3
702	icount=0
703	DO ir = 1, nn_rimwidth(ib_bdy)
704	DO ii = jpindt(iseg), jpinft(iseg)
705	icount = icount + 1
706	nbidta(icount, igrd, ib_bdy) = ii
707	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
708	nbrdta(icount, igrd, ib_bdy) = ir
709	ENDDO
710	ENDDO
711	ENDDO
712	!
713	! South
714	!-----
715	DO iseg = 1, nbdysegs
716	ib_bdy = npckgs(iseg)
717	!
718	! ------------ T points -------------
719	igrd=1
720	icount=0
721	DO ir = 1, nn_rimwidth(ib_bdy)
722	DO ii = jpisdt(iseg), jpisft(iseg)
723	icount = icount + 1
724	nbidta(icount, igrd, ib_bdy) = ii
725	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
726	nbrdta(icount, igrd, ib_bdy) = ir
727	ENDDO
728	ENDDO
729	!
730	! ------------ U points -------------
731	igrd=2
732	icount=0
733	DO ir = 1, nn_rimwidth(ib_bdy)
734	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
735	DO ii = jpisdt(iseg), jpisft(iseg)
736	icount = icount + 1
737	nbidta(icount, igrd, ib_bdy) = ii
738	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
739	nbrdta(icount, igrd, ib_bdy) = ir
740	ENDDO
741	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
742	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
743	ENDDO
744	!
745	! ------------ V points -------------
746	igrd=3
747	icount=0
748	DO ir = 1, nn_rimwidth(ib_bdy)
749	DO ii = jpisdt(iseg), jpisft(iseg)
750	icount = icount + 1
751	nbidta(icount, igrd, ib_bdy) = ii
752	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
753	nbrdta(icount, igrd, ib_bdy) = ir
754	ENDDO
755	ENDDO
756	ENDDO
757
758	! Deal with duplicated points
759	!-----------------------------
760	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
761	! if their distance to the bdy is greater than the other
762	! If their distance are the same, just keep only one to avoid updating a point twice
763	DO igrd = 1, jpbgrd
764	DO ib_bdy1 = 1, nb_bdy
765	DO ib_bdy2 = 1, nb_bdy
766	IF (ib_bdy1/=ib_bdy2) THEN
767	DO ib1 = 1, nblendta(igrd,ib_bdy1)
768	DO ib2 = 1, nblendta(igrd,ib_bdy2)
769	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
770	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
771	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
772	! & nbidta(ib1, igrd, ib_bdy1), &
773	! & nbjdta(ib2, igrd, ib_bdy2)
774	! keep only points with the lowest distance to boundary:
775	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
776	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
777	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
778	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
779	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
780	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
781	! Arbitrary choice if distances are the same:
782	ELSE
783	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
784	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
785	ENDIF
786	END IF
787	END DO
788	END DO
789	ENDIF
790	END DO
791	END DO
792	END DO
793
794	! Work out dimensions of boundary data on each processor
795	! ------------------------------------------------------
796
797	! Rather assume that boundary data indices are given on global domain
798	! TO BE DISCUSSED ?
799	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
800	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
801	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
802	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
803	iwe = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
804	ies = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
805	iso = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
806	ino = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
807
808	ALLOCATE( nbondi_bdy(nb_bdy))
809	ALLOCATE( nbondj_bdy(nb_bdy))
810	nbondi_bdy(:)=2
811	nbondj_bdy(:)=2
812	ALLOCATE( nbondi_bdy_b(nb_bdy))
813	ALLOCATE( nbondj_bdy_b(nb_bdy))
814	nbondi_bdy_b(:)=2
815	nbondj_bdy_b(:)=2
816
817	! Work out dimensions of boundary data on each neighbour process
818	IF(nbondi == 0) THEN
819	iw_b(1) = jpizoom + nimppt(nowe+1)
820	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
821	is_b(1) = jpjzoom + njmppt(nowe+1)
822	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
823
824	iw_b(2) = jpizoom + nimppt(noea+1)
825	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
826	is_b(2) = jpjzoom + njmppt(noea+1)
827	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
828	ELSEIF(nbondi == 1) THEN
829	iw_b(1) = jpizoom + nimppt(nowe+1)
830	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
831	is_b(1) = jpjzoom + njmppt(nowe+1)
832	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
833	ELSEIF(nbondi == -1) THEN
834	iw_b(2) = jpizoom + nimppt(noea+1)
835	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
836	is_b(2) = jpjzoom + njmppt(noea+1)
837	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
838	ENDIF
839
840	IF(nbondj == 0) THEN
841	iw_b(3) = jpizoom + nimppt(noso+1)
842	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
843	is_b(3) = jpjzoom + njmppt(noso+1)
844	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
845
846	iw_b(4) = jpizoom + nimppt(nono+1)
847	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
848	is_b(4) = jpjzoom + njmppt(nono+1)
849	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
850	ELSEIF(nbondj == 1) THEN
851	iw_b(3) = jpizoom + nimppt(noso+1)
852	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
853	is_b(3) = jpjzoom + njmppt(noso+1)
854	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
855	ELSEIF(nbondj == -1) THEN
856	iw_b(4) = jpizoom + nimppt(nono+1)
857	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
858	is_b(4) = jpjzoom + njmppt(nono+1)
859	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
860	ENDIF
861
862	DO ib_bdy = 1, nb_bdy
863	DO igrd = 1, jpbgrd
864	icount = 0
865	icountr = 0
866	idx_bdy(ib_bdy)%nblen(igrd) = 0
867	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
868	DO ib = 1, nblendta(igrd,ib_bdy)
869	! check that data is in correct order in file
870	ibm1 = MAX(1,ib-1)
871	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
872	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
873	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined ', &
874	& ' in order of distance from edge nbr A utility for re-ordering ', &
875	& ' boundary coordinates and data files exists in the TOOLS/OBC directory')
876	ENDIF
877	ENDIF
878	! check if point is in local domain
879	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
880	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino ) THEN
881	!
882	icount = icount + 1
883	!
884	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
885	ENDIF
886	ENDDO
887	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
888	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
889	ENDDO ! igrd
890
891	! Allocate index arrays for this boundary set
892	!--------------------------------------------
893	ilen1 = MAXVAL( idx_bdy(ib_bdy)%nblen(:) )
894	ALLOCATE( idx_bdy(ib_bdy)%nbi (ilen1,jpbgrd) )
895	ALLOCATE( idx_bdy(ib_bdy)%nbj (ilen1,jpbgrd) )
896	ALLOCATE( idx_bdy(ib_bdy)%nbr (ilen1,jpbgrd) )
897	ALLOCATE( idx_bdy(ib_bdy)%nbd (ilen1,jpbgrd) )
898	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
899	ALLOCATE( idx_bdy(ib_bdy)%nbmap (ilen1,jpbgrd) )
900	ALLOCATE( idx_bdy(ib_bdy)%nbw (ilen1,jpbgrd) )
901	ALLOCATE( idx_bdy(ib_bdy)%flagu (ilen1,jpbgrd) )
902	ALLOCATE( idx_bdy(ib_bdy)%flagv (ilen1,jpbgrd) )
903
904	! Dispatch mapping indices and discrete distances on each processor
905	! -----------------------------------------------------------------
906
907	com_east = 0
908	com_west = 0
909	com_south = 0
910	com_north = 0
911
912	com_east_b = 0
913	com_west_b = 0
914	com_south_b = 0
915	com_north_b = 0
916
917	DO igrd = 1, jpbgrd
918	icount = 0
919	! Loop on rimwidth to ensure outermost points come first in the local arrays.
920	DO ir=1, nn_rimwidth(ib_bdy)
921	DO ib = 1, nblendta(igrd,ib_bdy)
922	! check if point is in local domain and equals ir
923	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
924	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino .AND. &
925	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
926	!
927	icount = icount + 1
928
929	! Rather assume that boundary data indices are given on global domain
930	! TO BE DISCUSSED ?
931	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
932	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
933	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
934	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
935	! check if point has to be sent
936	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
937	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
938	if((com_east .ne. 1) .and. (ii == (nlci-1)) .and. (nbondi .le. 0)) then
939	com_east = 1
940	elseif((com_west .ne. 1) .and. (ii == 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
941	com_west = 1
942	endif
943	if((com_south .ne. 1) .and. (ij == 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
944	com_south = 1
945	elseif((com_north .ne. 1) .and. (ij == (nlcj-1)) .and. (nbondj .le. 0)) then
946	com_north = 1
947	endif
948	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
949	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
950	ENDIF
951	! check if point has to be received from a neighbour
952	IF(nbondi == 0) THEN
953	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
954	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
955	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
956	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
957	if((com_west_b .ne. 1) .and. (ii == (nlcit(nowe+1)-1))) then
958	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
959	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
960	com_south = 1
961	elseif((ij == nlcjt(nowe+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
962	com_north = 1
963	endif
964	com_west_b = 1
965	endif
966	ENDIF
967	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
968	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
969	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
970	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
971	if((com_east_b .ne. 1) .and. (ii == 2)) then
972	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
973	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
974	com_south = 1
975	elseif((ij == nlcjt(noea+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
976	com_north = 1
977	endif
978	com_east_b = 1
979	endif
980	ENDIF
981	ELSEIF(nbondi == 1) THEN
982	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
983	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
984	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
985	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
986	if((com_west_b .ne. 1) .and. (ii == (nlcit(nowe+1)-1))) then
987	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
988	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
989	com_south = 1
990	elseif((ij == nlcjt(nowe+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
991	com_north = 1
992	endif
993	com_west_b = 1
994	endif
995	ENDIF
996	ELSEIF(nbondi == -1) THEN
997	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
998	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
999	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1000	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
1001	if((com_east_b .ne. 1) .and. (ii == 2)) then
1002	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
1003	if((ij == 2) .and. (nbondj == 0 .or. nbondj == 1)) then
1004	com_south = 1
1005	elseif((ij == nlcjt(noea+1)-1) .and. (nbondj == 0 .or. nbondj == -1)) then
1006	com_north = 1
1007	endif
1008	com_east_b = 1
1009	endif
1010	ENDIF
1011	ENDIF
1012	IF(nbondj == 0) THEN
1013	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1014	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1015	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1016	com_north_b = 1
1017	ENDIF
1018	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
1019	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1020	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1021	com_south_b = 1
1022	ENDIF
1023	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1024	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1025	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1026	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1027	if((com_south_b .ne. 1) .and. (ij == (nlcjt(noso+1)-1))) then
1028	com_south_b = 1
1029	endif
1030	ENDIF
1031	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1032	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1033	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1034	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1035	if((com_north_b .ne. 1) .and. (ij == 2)) then
1036	com_north_b = 1
1037	endif
1038	ENDIF
1039	ELSEIF(nbondj == 1) THEN
1040	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
1041	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1042	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1043	com_south_b = 1
1044	ENDIF
1045	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1046	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1047	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1048	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1049	if((com_south_b .ne. 1) .and. (ij == (nlcjt(noso+1)-1))) then
1050	com_south_b = 1
1051	endif
1052	ENDIF
1053	ELSEIF(nbondj == -1) THEN
1054	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1055	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1056	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1057	com_north_b = 1
1058	ENDIF
1059	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1060	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1061	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1062	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1063	if((com_north_b .ne. 1) .and. (ij == 2)) then
1064	com_north_b = 1
1065	endif
1066	ENDIF
1067	ENDIF
1068	ENDDO
1069	ENDDO
1070	ENDDO
1071
1072	! definition of the i- and j- direction local boundaries arrays used for sending the boundaries
1073	IF( (com_east == 1) .and. (com_west == 1) ) THEN ; nbondi_bdy(ib_bdy) = 0
1074	ELSEIF( (com_east == 1) .and. (com_west == 0) ) THEN ; nbondi_bdy(ib_bdy) = -1
1075	ELSEIF( (com_east == 0) .and. (com_west == 1) ) THEN ; nbondi_bdy(ib_bdy) = 1
1076	ENDIF
1077	IF( (com_north == 1) .and. (com_south == 1) ) THEN ; nbondj_bdy(ib_bdy) = 0
1078	ELSEIF( (com_north == 1) .and. (com_south == 0) ) THEN ; nbondj_bdy(ib_bdy) = -1
1079	ELSEIF( (com_north == 0) .and. (com_south == 1) ) THEN ; nbondj_bdy(ib_bdy) = 1
1080	ENDIF
1081
1082	! definition of the i- and j- direction local boundaries arrays used for receiving the boundaries
1083	IF( (com_east_b == 1) .and. (com_west_b == 1) ) THEN ; nbondi_bdy_b(ib_bdy) = 0
1084	ELSEIF( (com_east_b == 1) .and. (com_west_b == 0) ) THEN ; nbondi_bdy_b(ib_bdy) = -1
1085	ELSEIF( (com_east_b == 0) .and. (com_west_b == 1) ) THEN ; nbondi_bdy_b(ib_bdy) = 1
1086	ENDIF
1087	IF( (com_north_b == 1) .and. (com_south_b == 1) ) THEN ; nbondj_bdy_b(ib_bdy) = 0
1088	ELSEIF( (com_north_b == 1) .and. (com_south_b == 0) ) THEN ; nbondj_bdy_b(ib_bdy) = -1
1089	ELSEIF( (com_north_b == 0) .and. (com_south_b == 1) ) THEN ; nbondj_bdy_b(ib_bdy) = 1
1090	ENDIF
1091
1092	! Compute rim weights for FRS scheme
1093	! ----------------------------------
1094	DO igrd = 1, jpbgrd
1095	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1096	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1097	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( REAL( nbr - 1 ) *0.5 ) ! tanh formulation
1098	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))**2. ! quadratic
1099	! idx_bdy(ib_bdy)%nbw(ib,igrd) = REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)) ! linear
1100	END DO
1101	END DO
1102
1103	! Compute damping coefficients
1104	! ----------------------------
1105	DO igrd = 1, jpbgrd
1106	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1107	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1108	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1109	& (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))*2. ! quadratic
1110	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1111	& (REAL(nn_rimwidth(ib_bdy)+1-nbr)/REAL(nn_rimwidth(ib_bdy)))*2. ! quadratic
1112	END DO
1113	END DO
1114
1115	ENDDO
1116
1117	! ------------------------------------------------------
1118	! Initialise masks and find normal/tangential directions
1119	! ------------------------------------------------------
1120
1121	! Read global 2D mask at T-points: bdytmask
1122	! -----------------------------------------
1123	! bdytmask = 1 on the computational domain AND on open boundaries
1124	! = 0 elsewhere
1125
1126	bdytmask(:,:) = ssmask(:,:)
1127
1128	IF( ln_mask_file ) THEN
1129	CALL iom_open( cn_mask_file, inum )
1130	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1131	CALL iom_close( inum )
1132
1133	! Derive mask on U and V grid from mask on T grid
1134	bdyumask(:,:) = 0._wp
1135	bdyvmask(:,:) = 0._wp
1136	DO ij=1, jpjm1
1137	DO ii=1, jpim1
1138	bdyumask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii+1, ij )
1139	bdyvmask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii ,ij+1)
1140	END DO
1141	END DO
1142	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1143
1144	ENDIF ! ln_mask_file=.TRUE.
1145
1146	IF( .NOT.ln_mask_file ) THEN
1147	! If .not. ln_mask_file then we need to derive mask on U and V grid from mask on T grid here.
1148	bdyumask(:,:) = 0._wp
1149	bdyvmask(:,:) = 0._wp
1150	DO ij = 1, jpjm1
1151	DO ii = 1, jpim1
1152	bdyumask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii+1, ij )
1153	bdyvmask(ii,ij) = bdytmask(ii,ij) * bdytmask(ii ,ij+1)
1154	END DO
1155	END DO
1156	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1157	ENDIF
1158
1159	! bdy masks are now set to zero on boundary points:
1160	!
1161	igrd = 1
1162	DO ib_bdy = 1, nb_bdy
1163	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1164	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1165	END DO
1166	END DO
1167	!
1168	igrd = 2
1169	DO ib_bdy = 1, nb_bdy
1170	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1171	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1172	END DO
1173	END DO
1174	!
1175	igrd = 3
1176	DO ib_bdy = 1, nb_bdy
1177	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1178	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0._wp
1179	ENDDO
1180	ENDDO
1181
1182	! For the flagu/flagv calculation below we require a version of fmask without
1183	! the land boundary condition (shlat) included:
1184	CALL wrk_alloc(jpi,jpj, zfmask )
1185	DO ij = 2, jpjm1
1186	DO ii = 2, jpim1
1187	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1188	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1189	END DO
1190	END DO
1191
1192	! Lateral boundary conditions
1193	CALL lbc_lnk( zfmask , 'F', 1. )
1194	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1195	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1196
1197	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1198
1199	idx_bdy(ib_bdy)%flagu(:,:) = 0._wp
1200	idx_bdy(ib_bdy)%flagv(:,:) = 0._wp
1201	icount = 0
1202
1203	! Calculate relationship of U direction to the local orientation of the boundary
1204	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1205	! flagu = 0 : u is tangential
1206	! flagu = 1 : u is normal to the boundary and is direction is inward
1207
1208	DO igrd = 1,jpbgrd
1209	SELECT CASE( igrd )
1210	CASE( 1 ) ; pmask => umask (:,:,1) ; i_offset = 0
1211	CASE( 2 ) ; pmask => bdytmask(:,:) ; i_offset = 1
1212	CASE( 3 ) ; pmask => zfmask (:,:) ; i_offset = 0
1213	END SELECT
1214	icount = 0
1215	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1216	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1217	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1218	zefl = pmask(nbi+i_offset-1,nbj)
1219	zwfl = pmask(nbi+i_offset,nbj)
1220	! This error check only works if you are using the bdyXmask arrays
1221	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1222	icount = icount + 1
1223	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1224	ELSE
1225	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1226	ENDIF
1227	END DO
1228	IF( icount /= 0 ) THEN
1229	IF(lwp) WRITE(numout,*)
1230	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1231	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1232	IF(lwp) WRITE(numout,*) ' ========== '
1233	IF(lwp) WRITE(numout,*)
1234	nstop = nstop + 1
1235	ENDIF
1236	END DO
1237
1238	! Calculate relationship of V direction to the local orientation of the boundary
1239	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1240	! flagv = 0 : v is tangential
1241	! flagv = 1 : v is normal to the boundary and is direction is inward
1242
1243	DO igrd = 1, jpbgrd
1244	SELECT CASE( igrd )
1245	CASE( 1 ) ; pmask => vmask (:,:,1) ; j_offset = 0
1246	CASE( 2 ) ; pmask => zfmask(:,:) ; j_offset = 0
1247	CASE( 3 ) ; pmask => bdytmask ; j_offset = 1
1248	END SELECT
1249	icount = 0
1250	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1251	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1252	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1253	znfl = pmask(nbi,nbj+j_offset-1)
1254	zsfl = pmask(nbi,nbj+j_offset )
1255	! This error check only works if you are using the bdyXmask arrays
1256	IF( j_offset == 1 .and. znfl + zsfl == 2 ) THEN
1257	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1258	icount = icount + 1
1259	ELSE
1260	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1261	END IF
1262	END DO
1263	IF( icount /= 0 ) THEN
1264	IF(lwp) WRITE(numout,*)
1265	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1266	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1267	IF(lwp) WRITE(numout,*) ' ========== '
1268	IF(lwp) WRITE(numout,*)
1269	nstop = nstop + 1
1270	ENDIF
1271	END DO
1272	!
1273	END DO
1274
1275	! Compute total lateral surface for volume correction:
1276	! ----------------------------------------------------
1277	! JC: this must be done at each time step with non-linear free surface
1278	bdysurftot = 0._wp
1279	IF( ln_vol ) THEN
1280	igrd = 2 ! Lateral surface at U-points
1281	DO ib_bdy = 1, nb_bdy
1282	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1283	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1284	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1285	flagu => idx_bdy(ib_bdy)%flagu(ib,igrd)
1286	bdysurftot = bdysurftot + hu_n (nbi , nbj) &
1287	& * e2u (nbi , nbj) * ABS( flagu ) &
1288	& * tmask_i(nbi , nbj) &
1289	& * tmask_i(nbi+1, nbj)
1290	END DO
1291	END DO
1292
1293	igrd=3 ! Add lateral surface at V-points
1294	DO ib_bdy = 1, nb_bdy
1295	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1296	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1297	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1298	flagv => idx_bdy(ib_bdy)%flagv(ib,igrd)
1299	bdysurftot = bdysurftot + hv_n (nbi, nbj ) &
1300	& * e1v (nbi, nbj ) * ABS( flagv ) &
1301	& * tmask_i(nbi, nbj ) &
1302	& * tmask_i(nbi, nbj+1)
1303	END DO
1304	END DO
1305	!
1306	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
1307	END IF
1308	!
1309	! Tidy up
1310	!--------
1311	IF( nb_bdy>0 ) DEALLOCATE( nbidta, nbjdta, nbrdta )
1312	!
1313	CALL wrk_dealloc(jpi,jpj, zfmask )
1314	!
1315	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1316	!
1317	END SUBROUTINE bdy_init
1318
1319
1320	SUBROUTINE bdy_ctl_seg
1321	!!----------------------------------------------------------------------
1322	!! * ROUTINE bdy_ctl_seg *
1323	!!
1324	!! ** Purpose : Check straight open boundary segments location
1325	!!
1326	!! ** Method : - Look for open boundary corners
1327	!! - Check that segments start or end on land
1328	!!----------------------------------------------------------------------
1329	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1330	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1331	REAL(wp), DIMENSION(2) :: ztestmask
1332	!!----------------------------------------------------------------------
1333	!
1334	IF (lwp) WRITE(numout,*) ' '
1335	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1336	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1337	!
1338	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1339	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1340	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1341	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1342	! 1. Check bounds
1343	!----------------
1344	DO ib = 1, nbdysegn
1345	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1346	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1347	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1348	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1349	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1350	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1351	END DO
1352	!
1353	DO ib = 1, nbdysegs
1354	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1355	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1356	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1357	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1358	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1359	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1360	END DO
1361	!
1362	DO ib = 1, nbdysege
1363	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1364	IF ((jpieob(ib).ge.jpiglo-1).or.&
1365	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1366	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1367	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1368	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1369	END DO
1370	!
1371	DO ib = 1, nbdysegw
1372	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1373	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1374	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1375	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1376	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1377	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1378	ENDDO
1379	!
1380	!
1381	! 2. Look for segment crossings
1382	!------------------------------
1383	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1384	!
1385	itest = 0 ! corner number
1386	!
1387	! flag to detect if start or end of open boundary belongs to a corner
1388	! if not (=0), it must be on land.
1389	! if a corner is detected, save bdy package number for further tests
1390	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1391	! South/West crossings
1392	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1393	DO ib1 = 1, nbdysegw
1394	DO ib2 = 1, nbdysegs
1395	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1396	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1397	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1398	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1399	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1400	! We have a possible South-West corner
1401	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1402	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1403	icornw(ib1,1) = npckgs(ib2)
1404	icorns(ib2,1) = npckgw(ib1)
1405	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
1406	IF(lwp) WRITE(numout,*)
1407	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1408	& jpisft(ib2), jpjwft(ib1)
1409	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1410	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1411	& ' and South segment: ',npckgs(ib2)
1412	IF(lwp) WRITE(numout,*)
1413	nstop = nstop + 1
1414	ELSE
1415	IF(lwp) WRITE(numout,*)
1416	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
1417	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1418	& ' and South segment: ',npckgs(ib2)
1419	IF(lwp) WRITE(numout,*)
1420	nstop = nstop+1
1421	END IF
1422	END IF
1423	END DO
1424	END DO
1425	END IF
1426	!
1427	! South/East crossings
1428	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1429	DO ib1 = 1, nbdysege
1430	DO ib2 = 1, nbdysegs
1431	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1432	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1433	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1434	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1435	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1436	! We have a possible South-East corner
1437	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1438	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1439	icorne(ib1,1) = npckgs(ib2)
1440	icorns(ib2,2) = npckge(ib1)
1441	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
1442	IF(lwp) WRITE(numout,*)
1443	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1444	& jpisdt(ib2), jpjeft(ib1)
1445	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1446	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1447	& ' and South segment: ',npckgs(ib2)
1448	IF(lwp) WRITE(numout,*)
1449	nstop = nstop + 1
1450	ELSE
1451	IF(lwp) WRITE(numout,*)
1452	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
1453	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1454	& ' and South segment: ',npckgs(ib2)
1455	IF(lwp) WRITE(numout,*)
1456	nstop = nstop + 1
1457	END IF
1458	END IF
1459	END DO
1460	END DO
1461	END IF
1462	!
1463	! North/West crossings
1464	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1465	DO ib1 = 1, nbdysegw
1466	DO ib2 = 1, nbdysegn
1467	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1468	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1469	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1470	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1471	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1472	! We have a possible North-West corner
1473	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1474	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1475	icornw(ib1,2) = npckgn(ib2)
1476	icornn(ib2,1) = npckgw(ib1)
1477	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1478	IF(lwp) WRITE(numout,*)
1479	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1480	& jpinft(ib2), jpjwdt(ib1)
1481	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1482	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1483	& ' and North segment: ',npckgn(ib2)
1484	IF(lwp) WRITE(numout,*)
1485	nstop = nstop + 1
1486	ELSE
1487	IF(lwp) WRITE(numout,*)
1488	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1489	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1490	& ' and North segment: ',npckgn(ib2)
1491	IF(lwp) WRITE(numout,*)
1492	nstop = nstop + 1
1493	END IF
1494	END IF
1495	END DO
1496	END DO
1497	END IF
1498	!
1499	! North/East crossings
1500	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1501	DO ib1 = 1, nbdysege
1502	DO ib2 = 1, nbdysegn
1503	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1504	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1505	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1506	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1507	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1508	! We have a possible North-East corner
1509	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1510	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1511	icorne(ib1,2) = npckgn(ib2)
1512	icornn(ib2,2) = npckge(ib1)
1513	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1514	IF(lwp) WRITE(numout,*)
1515	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1516	& jpindt(ib2), jpjedt(ib1)
1517	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1518	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1519	& ' and North segment: ',npckgn(ib2)
1520	IF(lwp) WRITE(numout,*)
1521	nstop = nstop + 1
1522	ELSE
1523	IF(lwp) WRITE(numout,*)
1524	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1525	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1526	& ' and North segment: ',npckgn(ib2)
1527	IF(lwp) WRITE(numout,*)
1528	nstop = nstop + 1
1529	END IF
1530	END IF
1531	END DO
1532	END DO
1533	END IF
1534	!
1535	! 3. Check if segment extremities are on land
1536	!--------------------------------------------
1537	!
1538	! West segments
1539	DO ib = 1, nbdysegw
1540	! get mask at boundary extremities:
1541	ztestmask(1:2)=0.
1542	DO ji = 1, jpi
1543	DO jj = 1, jpj
1544	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1545	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1546	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1547	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1548	END DO
1549	END DO
1550	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1551
1552	IF (ztestmask(1)==1) THEN
1553	IF (icornw(ib,1)==0) THEN
1554	IF(lwp) WRITE(numout,*)
1555	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1556	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1557	IF(lwp) WRITE(numout,*)
1558	nstop = nstop + 1
1559	ELSE
1560	! This is a corner
1561	IF(lwp) WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1562	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1563	itest=itest+1
1564	ENDIF
1565	ENDIF
1566	IF (ztestmask(2)==1) THEN
1567	IF (icornw(ib,2)==0) THEN
1568	IF(lwp) WRITE(numout,*)
1569	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1570	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1571	IF(lwp) WRITE(numout,*)
1572	nstop = nstop + 1
1573	ELSE
1574	! This is a corner
1575	IF(lwp) WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1576	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1577	itest=itest+1
1578	ENDIF
1579	ENDIF
1580	END DO
1581	!
1582	! East segments
1583	DO ib = 1, nbdysege
1584	! get mask at boundary extremities:
1585	ztestmask(1:2)=0.
1586	DO ji = 1, jpi
1587	DO jj = 1, jpj
1588	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1589	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1590	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1591	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1592	END DO
1593	END DO
1594	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1595
1596	IF (ztestmask(1)==1) THEN
1597	IF (icorne(ib,1)==0) THEN
1598	IF(lwp) WRITE(numout,*)
1599	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1600	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1601	IF(lwp) WRITE(numout,*)
1602	nstop = nstop + 1
1603	ELSE
1604	! This is a corner
1605	IF(lwp) WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1606	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1607	itest=itest+1
1608	ENDIF
1609	ENDIF
1610	IF (ztestmask(2)==1) THEN
1611	IF (icorne(ib,2)==0) THEN
1612	IF(lwp) WRITE(numout,*)
1613	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1614	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1615	IF(lwp) WRITE(numout,*)
1616	nstop = nstop + 1
1617	ELSE
1618	! This is a corner
1619	IF(lwp) WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1620	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1621	itest=itest+1
1622	ENDIF
1623	ENDIF
1624	END DO
1625	!
1626	! South segments
1627	DO ib = 1, nbdysegs
1628	! get mask at boundary extremities:
1629	ztestmask(1:2)=0.
1630	DO ji = 1, jpi
1631	DO jj = 1, jpj
1632	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1633	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1634	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1635	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1636	END DO
1637	END DO
1638	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1639
1640	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1641	IF(lwp) WRITE(numout,*)
1642	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1643	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1644	IF(lwp) WRITE(numout,*)
1645	nstop = nstop + 1
1646	ENDIF
1647	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1648	IF(lwp) WRITE(numout,*)
1649	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1650	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1651	IF(lwp) WRITE(numout,*)
1652	nstop = nstop + 1
1653	ENDIF
1654	END DO
1655	!
1656	! North segments
1657	DO ib = 1, nbdysegn
1658	! get mask at boundary extremities:
1659	ztestmask(1:2)=0.
1660	DO ji = 1, jpi
1661	DO jj = 1, jpj
1662	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1663	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1664	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1665	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1666	END DO
1667	END DO
1668	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1669
1670	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1671	IF(lwp) WRITE(numout,*)
1672	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1673	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1674	IF(lwp) WRITE(numout,*)
1675	nstop = nstop + 1
1676	ENDIF
1677	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1678	IF(lwp) WRITE(numout,*)
1679	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1680	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1681	IF(lwp) WRITE(numout,*)
1682	nstop = nstop + 1
1683	ENDIF
1684	END DO
1685	!
1686	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1687	!
1688	! Other tests TBD:
1689	! segments completly on land
1690	! optimized open boundary array length according to landmask
1691	! Nudging layers that overlap with interior domain
1692	!
1693	END SUBROUTINE bdy_ctl_seg
1694
1695	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1696	!!----------------------------------------------------------------------
1697	!! * ROUTINE bdy_ctl_corn *
1698	!!
1699	!! ** Purpose : Check numerical schemes consistency between
1700	!! segments having a common corner
1701	!!
1702	!! ** Method :
1703	!!----------------------------------------------------------------------
1704	INTEGER, INTENT(in) :: ib1, ib2
1705	INTEGER :: itest
1706	!!----------------------------------------------------------------------
1707	itest = 0
1708
1709	IF( cn_dyn2d(ib1) /= cn_dyn2d(ib2) ) itest = itest + 1
1710	IF( cn_dyn3d(ib1) /= cn_dyn3d(ib2) ) itest = itest + 1
1711	IF( cn_tra (ib1) /= cn_tra (ib2) ) itest = itest + 1
1712	!
1713	IF( nn_dyn2d_dta(ib1) /= nn_dyn2d_dta(ib2) ) itest = itest + 1
1714	IF( nn_dyn3d_dta(ib1) /= nn_dyn3d_dta(ib2) ) itest = itest + 1
1715	IF( nn_tra_dta (ib1) /= nn_tra_dta (ib2) ) itest = itest + 1
1716	!
1717	IF( nn_rimwidth(ib1) /= nn_rimwidth(ib2) ) itest = itest + 1
1718	!
1719	IF( itest>0 ) THEN
1720	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1721	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1722	IF(lwp) WRITE(numout,*)
1723	nstop = nstop + 1
1724	ENDIF
1725	!
1726	END SUBROUTINE bdy_ctl_corn
1727
1728	#else
1729	!!---------------------------------------------------------------------------------
1730	!! Dummy module NO open boundaries
1731	!!---------------------------------------------------------------------------------
1732	CONTAINS
1733	SUBROUTINE bdy_init ! Dummy routine
1734	END SUBROUTINE bdy_init
1735	#endif
1736
1737	!!=================================================================================
1738	END MODULE bdyini

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source: branches/NERC/dev_r6998_ORCHESTRA/NEMOGCM/CONFIG/ORCHESTRA/MY_SRC/bdyini.F90 @ 7029

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