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bdyini.F90 @ 10064

Last change on this file since 10064 was 10064, checked in by csanchez, 6 years ago
Added changes from Bijoy and Enda's for sponge layer, no tidal harm, and rimwidth=1
File size: 86.5 KB

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1	MODULE bdyini
2	!!======================================================================
3	!! * MODULE bdyini *
4	!! Unstructured open boundaries : initialisation
5	!!======================================================================
6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
8	!! - ! 2007-01 (D. Storkey) Tidal forcing
9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
10	!! 3.3 ! 2010-09 (E.O'Dea) updates for Shelf configurations
11	!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
12	!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
13	!! 3.4 ! 2012 (J. Chanut) straight open boundary case update
14	!! 3.5 ! 2012 (S. Mocavero, I. Epicoco) Updates for the
15	!! optimization of BDY communications
16	!!----------------------------------------------------------------------
17	#if defined key_bdy
18	!!----------------------------------------------------------------------
19	!! 'key_bdy' Unstructured Open Boundary Conditions
20	!!----------------------------------------------------------------------
21	!! bdy_init : Initialization of unstructured open boundaries
22	!!----------------------------------------------------------------------
23	USE wrk_nemo ! Memory Allocation
24	USE timing ! Timing
25	USE oce ! ocean dynamics and tracers variables
26	USE dom_oce ! ocean space and time domain
27	USE bdy_oce ! unstructured open boundary conditions
28	USE in_out_manager ! I/O units
29	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
30	USE lib_mpp ! for mpp_sum
31	USE iom ! I/O
32	USE sbctide, ONLY: lk_tide ! Tidal forcing or not
33	USE phycst, ONLY: rday
34
35	IMPLICIT NONE
36	PRIVATE
37
38	PUBLIC bdy_init ! routine called in nemo_init
39
40	INTEGER, PARAMETER :: jp_nseg = 100
41	INTEGER, PARAMETER :: nrimmax = 20 ! maximum rimwidth in structured
42	! open boundary data files
43	! Straight open boundary segment parameters:
44	INTEGER :: nbdysege, nbdysegw, nbdysegn, nbdysegs
45	INTEGER, DIMENSION(jp_nseg) :: jpieob, jpjedt, jpjeft, npckge
46	INTEGER, DIMENSION(jp_nseg) :: jpiwob, jpjwdt, jpjwft, npckgw
47	INTEGER, DIMENSION(jp_nseg) :: jpjnob, jpindt, jpinft, npckgn
48	INTEGER, DIMENSION(jp_nseg) :: jpjsob, jpisdt, jpisft, npckgs
49	!!----------------------------------------------------------------------
50	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
51	!! $Id$
52	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
53	!!----------------------------------------------------------------------
54	CONTAINS
55
56	SUBROUTINE bdy_init
57	!!----------------------------------------------------------------------
58	!! * ROUTINE bdy_init *
59	!!
60	!! ** Purpose : Initialization of the dynamics and tracer fields with
61	!! unstructured open boundaries.
62	!!
63	!! ** Method : Read initialization arrays (mask, indices) to identify
64	!! an unstructured open boundary
65	!!
66	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
67	!!----------------------------------------------------------------------
68	! namelist variables
69	!-------------------
70	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile
71	CHARACTER(LEN=1) :: ctypebdy
72	INTEGER :: nbdyind, nbdybeg, nbdyend
73
74	! local variables
75	!-------------------
76	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
77	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
78	INTEGER :: iwe, ies, iso, ino, inum, id_dummy ! - -
79	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
80	INTEGER :: jpbdtau, jpbdtas ! - -
81	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
82	INTEGER :: i_offset, j_offset ! - -
83	INTEGER, POINTER :: nbi, nbj, nbr ! short cuts
84	REAL(wp), POINTER :: flagu, flagv ! - -
85	REAL(wp), POINTER, DIMENSION(:,:) :: pmask ! pointer to 2D mask fields
86	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
87	INTEGER, DIMENSION (2) :: kdimsz
88	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
89	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
90	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
91	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
92	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
93	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
94	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
95	REAL(wp), POINTER, DIMENSION(:,:) :: zfmask ! temporary fmask array excluding coastal boundary condition (shlat)
96
97	!! CEOD sponge
98	NAMELIST/nambdy/ nb_bdy, ln_coords_file, cn_coords_file, &
99	& ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, &
100	& cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, &
101	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, &
102	& cn_ice_lim, nn_ice_lim_dta, &
103	& rn_ice_tem, rn_ice_sal, rn_ice_age, &
104	& ln_vol, nn_volctl, nn_rimwidth, &
105	& ln_sponge, rn_sponge !CEOD
106	!!
107	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
108
109
110	! ! JT
111	NAMELIST/nambdy_ssh/ ln_ssh_bdy
112	! ! JT
113	INTEGER :: ios ! Local integer output status for namelist read
114	!!----------------------------------------------------------------------
115
116	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
117
118	IF(lwp) WRITE(numout,*)
119	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
120	IF(lwp) WRITE(numout,*) '~~~~~~~~'
121	!
122
123	IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
124	& ' and general open boundary condition are not compatible' )
125
126	cgrid= (/'t','u','v'/)
127
128	! ------------------------
129	! Read namelist parameters
130	! ------------------------
131
132	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
133	READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 901)
134	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp )
135
136	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
137	READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 902 )
138	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp )
139	IF(lwm) WRITE ( numond, nambdy )
140	!JT Read nambdy_ssh namelist
141	REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries
142	READ ( numnam_ref, nambdy_ssh, IOSTAT = ios, ERR = 905)
143	905 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_ssh in reference namelist', lwp )
144
145	REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries
146	READ ( numnam_cfg, nambdy_ssh, IOSTAT = ios, ERR = 906)
147	906 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_ssh in configuration namelist', lwp )
148	IF(lwm) WRITE ( numond, nambdy_ssh )
149
150	IF(lwp) WRITE(numout,*)
151	IF(lwp) WRITE(numout,*) 'nambdy_ssh : use of ssh boundaries'
152	IF(lwp) WRITE(numout,*) '~~~~~~~~'
153	IF(lwp) WRITE(numout,*) ' ln_ssh_bdy: '
154	DO ib_bdy = 1,nb_bdy
155	IF(lwp) WRITE(numout,*) ' ln_ssh_bdy(',ib_bdy,'): ',ln_ssh_bdy(ib_bdy)
156	ENDDO
157	IF(lwp) WRITE(numout,*) '~~~~~~~~'
158	IF(lwp) WRITE(numout,*)
159	!JT
160
161	! -----------------------------------------
162	! Check and write out namelist parameters
163	! -----------------------------------------
164	! ! control prints
165	IF(lwp) WRITE(numout,*) ' nambdy'
166
167	IF( nb_bdy .eq. 0 ) THEN
168	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
169	ELSE
170	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ',nb_bdy
171	ENDIF
172
173	DO ib_bdy = 1,nb_bdy
174	IF(lwp) WRITE(numout,*) ' '
175	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
176
177	IF( ln_coords_file(ib_bdy) ) THEN
178	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
179	ELSE
180	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
181	ENDIF
182	IF(lwp) WRITE(numout,*)
183
184	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
185	SELECT CASE( cn_dyn2d(ib_bdy) )
186	CASE('none')
187	IF(lwp) WRITE(numout,*) ' no open boundary condition'
188	dta_bdy(ib_bdy)%ll_ssh = .false.
189	dta_bdy(ib_bdy)%ll_u2d = .false.
190	dta_bdy(ib_bdy)%ll_v2d = .false.
191	CASE('frs')
192	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
193	dta_bdy(ib_bdy)%ll_ssh = .false.
194	dta_bdy(ib_bdy)%ll_u2d = .true.
195	dta_bdy(ib_bdy)%ll_v2d = .true.
196	CASE('flather')
197	IF(lwp) WRITE(numout,*) ' Flather radiation condition'
198	dta_bdy(ib_bdy)%ll_ssh = .true.
199	dta_bdy(ib_bdy)%ll_u2d = .true.
200	dta_bdy(ib_bdy)%ll_v2d = .true.
201	CASE('orlanski')
202	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
203	dta_bdy(ib_bdy)%ll_ssh = .false.
204	dta_bdy(ib_bdy)%ll_u2d = .true.
205	dta_bdy(ib_bdy)%ll_v2d = .true.
206	CASE('orlanski_npo')
207	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
208	dta_bdy(ib_bdy)%ll_ssh = .false.
209	dta_bdy(ib_bdy)%ll_u2d = .true.
210	dta_bdy(ib_bdy)%ll_v2d = .true.
211	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn2d' )
212	END SELECT
213
214	!JT override dta_bdy(ib_bdy)%ll_ssh with namelist value (ln_ssh_bdy)
215	IF(lwp) WRITE(numout,*) 'nambdy_ssh : use of ssh boundaries'
216	IF(lwp) WRITE(numout,*) '~~~~~~~~'
217	IF(lwp) WRITE(numout,*) ' ib_bdy: ',ib_bdy
218	IF(lwp) WRITE(numout,*) ' Prior to Implementation of nambdy_ssh'
219	IF(lwp) WRITE(numout,*) ' dta_bdy(ib_bdy)%ll_ssh: ',dta_bdy(ib_bdy)%ll_ssh
220
221	dta_bdy(ib_bdy)%ll_ssh = ln_ssh_bdy(ib_bdy)
222
223	IF(lwp) WRITE(numout,*) ' After to Implementation of nambdy_ssh'
224	IF(lwp) WRITE(numout,*) ' dta_bdy(ib_bdy)%ll_ssh: ',dta_bdy(ib_bdy)%ll_ssh
225	IF(lwp) WRITE(numout,*) '~~~~~~~~'
226
227	!JT
228
229	IF( cn_dyn2d(ib_bdy) /= 'none' ) THEN
230	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
231	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
232	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
233	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
234	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
235	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
236	END SELECT
237	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
238	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
239	ENDIF
240	ENDIF
241	IF(lwp) WRITE(numout,*)
242
243	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
244	SELECT CASE( cn_dyn3d(ib_bdy) )
245	CASE('none')
246	IF(lwp) WRITE(numout,*) ' no open boundary condition'
247	dta_bdy(ib_bdy)%ll_u3d = .false.
248	dta_bdy(ib_bdy)%ll_v3d = .false.
249	CASE('frs')
250	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
251	dta_bdy(ib_bdy)%ll_u3d = .true.
252	dta_bdy(ib_bdy)%ll_v3d = .true.
253	CASE('specified')
254	IF(lwp) WRITE(numout,*) ' Specified value'
255	dta_bdy(ib_bdy)%ll_u3d = .true.
256	dta_bdy(ib_bdy)%ll_v3d = .true.
257	CASE('neumann')
258	IF(lwp) WRITE(numout,*) ' Neumann conditions'
259	dta_bdy(ib_bdy)%ll_u3d = .false.
260	dta_bdy(ib_bdy)%ll_v3d = .false.
261	CASE('zerograd')
262	IF(lwp) WRITE(numout,*) ' Zero gradient for baroclinic velocities'
263	dta_bdy(ib_bdy)%ll_u3d = .false.
264	dta_bdy(ib_bdy)%ll_v3d = .false.
265	CASE('zero')
266	IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
267	dta_bdy(ib_bdy)%ll_u3d = .false.
268	dta_bdy(ib_bdy)%ll_v3d = .false.
269	CASE('orlanski')
270	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
271	dta_bdy(ib_bdy)%ll_u3d = .true.
272	dta_bdy(ib_bdy)%ll_v3d = .true.
273	CASE('orlanski_npo')
274	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
275	dta_bdy(ib_bdy)%ll_u3d = .true.
276	dta_bdy(ib_bdy)%ll_v3d = .true.
277	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_dyn3d' )
278	END SELECT
279	IF( cn_dyn3d(ib_bdy) /= 'none' ) THEN
280	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
281	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
282	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
283	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
284	END SELECT
285	ENDIF
286
287	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
288	IF ( cn_dyn3d(ib_bdy) == 'none' ) THEN
289	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
290	ln_dyn3d_dmp(ib_bdy)=.false.
291	ELSEIF ( cn_dyn3d(ib_bdy) == 'frs' ) THEN
292	CALL ctl_stop( 'Use FRS OR relaxation' )
293	ELSE
294	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
295	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
296	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
297	dta_bdy(ib_bdy)%ll_u3d = .true.
298	dta_bdy(ib_bdy)%ll_v3d = .true.
299	ENDIF
300	ELSE
301	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
302	ENDIF
303	IF(lwp) WRITE(numout,*)
304
305	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
306	SELECT CASE( cn_tra(ib_bdy) )
307	CASE('none')
308	IF(lwp) WRITE(numout,*) ' no open boundary condition'
309	dta_bdy(ib_bdy)%ll_tem = .false.
310	dta_bdy(ib_bdy)%ll_sal = .false.
311	CASE('frs')
312	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
313	dta_bdy(ib_bdy)%ll_tem = .true.
314	dta_bdy(ib_bdy)%ll_sal = .true.
315	CASE('specified')
316	IF(lwp) WRITE(numout,*) ' Specified value'
317	dta_bdy(ib_bdy)%ll_tem = .true.
318	dta_bdy(ib_bdy)%ll_sal = .true.
319	CASE('neumann')
320	IF(lwp) WRITE(numout,*) ' Neumann conditions'
321	dta_bdy(ib_bdy)%ll_tem = .false.
322	dta_bdy(ib_bdy)%ll_sal = .false.
323	CASE('runoff')
324	IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
325	dta_bdy(ib_bdy)%ll_tem = .false.
326	dta_bdy(ib_bdy)%ll_sal = .false.
327	CASE('orlanski')
328	IF(lwp) WRITE(numout,*) ' Orlanski (fully oblique) radiation condition with adaptive nudging'
329	dta_bdy(ib_bdy)%ll_tem = .true.
330	dta_bdy(ib_bdy)%ll_sal = .true.
331	CASE('orlanski_npo')
332	IF(lwp) WRITE(numout,*) ' Orlanski (NPO) radiation condition with adaptive nudging'
333	dta_bdy(ib_bdy)%ll_tem = .true.
334	dta_bdy(ib_bdy)%ll_sal = .true.
335	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_tra' )
336	END SELECT
337	IF( cn_tra(ib_bdy) /= 'none' ) THEN
338	SELECT CASE( nn_tra_dta(ib_bdy) ) !
339	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
340	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
341	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
342	END SELECT
343	ENDIF
344
345	IF ( ln_tra_dmp(ib_bdy) ) THEN
346	IF ( cn_tra(ib_bdy) == 'none' ) THEN
347	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
348	ln_tra_dmp(ib_bdy)=.false.
349	ELSEIF ( cn_tra(ib_bdy) == 'frs' ) THEN
350	CALL ctl_stop( 'Use FRS OR relaxation' )
351	ELSE
352	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
353	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
354	IF(lwp) WRITE(numout,*) ' Outflow damping time scale: ',rn_time_dmp_out(ib_bdy),' days'
355	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
356	dta_bdy(ib_bdy)%ll_tem = .true.
357	dta_bdy(ib_bdy)%ll_sal = .true.
358	ENDIF
359	ELSE
360	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
361	ENDIF
362	IF(lwp) WRITE(numout,*)
363
364	#if defined key_lim2
365	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
366	SELECT CASE( cn_ice_lim(ib_bdy) )
367	CASE('none')
368	IF(lwp) WRITE(numout,*) ' no open boundary condition'
369	dta_bdy(ib_bdy)%ll_frld = .false.
370	dta_bdy(ib_bdy)%ll_hicif = .false.
371	dta_bdy(ib_bdy)%ll_hsnif = .false.
372	CASE('frs')
373	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
374	dta_bdy(ib_bdy)%ll_frld = .true.
375	dta_bdy(ib_bdy)%ll_hicif = .true.
376	dta_bdy(ib_bdy)%ll_hsnif = .true.
377	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
378	END SELECT
379	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
380	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
381	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
382	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
383	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
384	END SELECT
385	ENDIF
386	IF(lwp) WRITE(numout,*)
387	#elif defined key_lim3
388	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
389	SELECT CASE( cn_ice_lim(ib_bdy) )
390	CASE('none')
391	IF(lwp) WRITE(numout,*) ' no open boundary condition'
392	dta_bdy(ib_bdy)%ll_a_i = .false.
393	dta_bdy(ib_bdy)%ll_ht_i = .false.
394	dta_bdy(ib_bdy)%ll_ht_s = .false.
395	CASE('frs')
396	IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
397	dta_bdy(ib_bdy)%ll_a_i = .true.
398	dta_bdy(ib_bdy)%ll_ht_i = .true.
399	dta_bdy(ib_bdy)%ll_ht_s = .true.
400	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for cn_ice_lim' )
401	END SELECT
402	IF( cn_ice_lim(ib_bdy) /= 'none' ) THEN
403	SELECT CASE( nn_ice_lim_dta(ib_bdy) ) !
404	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
405	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
406	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim_dta must be 0 or 1' )
407	END SELECT
408	ENDIF
409	IF(lwp) WRITE(numout,*)
410	IF(lwp) WRITE(numout,*) ' tem of bdy sea-ice = ', rn_ice_tem(ib_bdy)
411	IF(lwp) WRITE(numout,*) ' sal of bdy sea-ice = ', rn_ice_sal(ib_bdy)
412	IF(lwp) WRITE(numout,*) ' age of bdy sea-ice = ', rn_ice_age(ib_bdy)
413	#endif
414
415	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
416	IF(lwp) WRITE(numout,*)
417	!CEOD
418	IF( ln_sponge(ib_bdy) ) THEN ! check sponge layer choice
419	IF(lwp) WRITE(numout,*) 'Sponge layer applied at open boundaries'
420	IF(lwp) WRITE(numout,*) 'Multiplier for diffusion in sponge layer :', rn_sponge
421	IF(lwp) WRITE(numout,*)
422	ELSE
423	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
424	IF(lwp) WRITE(numout,*)
425	ENDIF
426	!
427	ENDDO
428
429	IF (nb_bdy .gt. 0) THEN
430	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
431	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
432	IF(lwp) WRITE(numout,*)
433	SELECT CASE ( nn_volctl )
434	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
435	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
436	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
437	END SELECT
438	IF(lwp) WRITE(numout,*)
439	ELSE
440	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
441	IF(lwp) WRITE(numout,*)
442	ENDIF
443	ENDIF
444	sponge_factor(:,:) = 1.0 !CEOD
445
446	! -------------------------------------------------
447	! Initialise indices arrays for open boundaries
448	! -------------------------------------------------
449
450	! Work out global dimensions of boundary data
451	! ---------------------------------------------
452	REWIND( numnam_cfg )
453
454	!!----------------------------------------------------------------------
455
456
457
458	nblendta(:,:) = 0
459	nbdysege = 0
460	nbdysegw = 0
461	nbdysegn = 0
462	nbdysegs = 0
463	icount = 0 ! count user defined segments
464	! Dimensions below are used to allocate arrays to read external data
465	jpbdtas = 1 ! Maximum size of boundary data (structured case)
466	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
467
468	DO ib_bdy = 1, nb_bdy
469
470	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
471
472	icount = icount + 1
473	! No REWIND here because may need to read more than one nambdy_index namelist.
474	! Read only namelist_cfg to avoid unseccessfull overwrite
475	!! REWIND( numnam_ref ) ! Namelist nambdy_index in reference namelist : Open boundaries indexes
476	!! READ ( numnam_ref, namrun, IOSTAT = ios, ERR = 903)
477	!!903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in reference namelist', lwp )
478
479	!! REWIND( numnam_cfg ) ! Namelist nambdy_index in configuration namelist : Open boundaries indexes
480	READ ( numnam_cfg, nambdy_index, IOSTAT = ios, ERR = 904 )
481	904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy_index in configuration namelist', lwp )
482	IF(lwm) WRITE ( numond, nambdy_index )
483
484	SELECT CASE ( TRIM(ctypebdy) )
485	CASE( 'N' )
486	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
487	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
488	nbdybeg = 2
489	nbdyend = jpiglo - 1
490	ENDIF
491	nbdysegn = nbdysegn + 1
492	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
493	jpjnob(nbdysegn) = nbdyind
494	jpindt(nbdysegn) = nbdybeg
495	jpinft(nbdysegn) = nbdyend
496	!
497	CASE( 'S' )
498	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
499	nbdyind = 2 ! set boundary to whole side of model domain.
500	nbdybeg = 2
501	nbdyend = jpiglo - 1
502	ENDIF
503	nbdysegs = nbdysegs + 1
504	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
505	jpjsob(nbdysegs) = nbdyind
506	jpisdt(nbdysegs) = nbdybeg
507	jpisft(nbdysegs) = nbdyend
508	!
509	CASE( 'E' )
510	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
511	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
512	nbdybeg = 2
513	nbdyend = jpjglo - 1
514	ENDIF
515	nbdysege = nbdysege + 1
516	npckge(nbdysege) = ib_bdy ! Save bdy package number
517	jpieob(nbdysege) = nbdyind
518	jpjedt(nbdysege) = nbdybeg
519	jpjeft(nbdysege) = nbdyend
520	!
521	CASE( 'W' )
522	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
523	nbdyind = 2 ! set boundary to whole side of model domain.
524	nbdybeg = 2
525	nbdyend = jpjglo - 1
526	ENDIF
527	nbdysegw = nbdysegw + 1
528	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
529	jpiwob(nbdysegw) = nbdyind
530	jpjwdt(nbdysegw) = nbdybeg
531	jpjwft(nbdysegw) = nbdyend
532	!
533	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
534	END SELECT
535
536	! For simplicity we assume that in case of straight bdy, arrays have the same length
537	! (even if it is true that last tangential velocity points
538	! are useless). This simplifies a little bit boundary data format (and agrees with format
539	! used so far in obc package)
540
541	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
542	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
543	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
544	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
545
546	ELSE ! Read size of arrays in boundary coordinates file.
547	CALL iom_open( cn_coords_file(ib_bdy), inum )
548	DO igrd = 1, jpbgrd
549	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
550	!clem nblendta(igrd,ib_bdy) = kdimsz(1)
551	!clem jpbdtau = MAX(jpbdtau, kdimsz(1))
552	nblendta(igrd,ib_bdy) = MAXVAL(kdimsz)
553	jpbdtau = MAX(jpbdtau, MAXVAL(kdimsz))
554	ENDDO
555	CALL iom_close( inum )
556
557	ENDIF
558
559	ENDDO ! ib_bdy
560
561	IF (nb_bdy>0) THEN
562	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
563
564	! Allocate arrays
565	!---------------
566	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
567	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
568
569	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
570	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
571	!
572	ENDIF
573
574	! Now look for crossings in user (namelist) defined open boundary segments:
575	!--------------------------------------------------------------------------
576	IF ( icount>0 ) CALL bdy_ctl_seg
577
578	! Calculate global boundary index arrays or read in from file
579	!------------------------------------------------------------
580	! 1. Read global index arrays from boundary coordinates file.
581	DO ib_bdy = 1, nb_bdy
582
583	IF( ln_coords_file(ib_bdy) ) THEN
584
585	CALL iom_open( cn_coords_file(ib_bdy), inum )
586	DO igrd = 1, jpbgrd
587	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
588	DO ii = 1,nblendta(igrd,ib_bdy)
589	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
590	END DO
591	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
592	DO ii = 1,nblendta(igrd,ib_bdy)
593	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
594	END DO
595	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
596	DO ii = 1,nblendta(igrd,ib_bdy)
597	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
598	END DO
599
600	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
601	IF(lwp) WRITE(numout,*)
602	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
603	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
604	IF (ibr_max < nn_rimwidth(ib_bdy)) &
605	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
606	END DO
607	CALL iom_close( inum )
608
609	ENDIF
610
611	ENDDO
612
613	! 2. Now fill indices corresponding to straight open boundary arrays:
614	! East
615	!-----
616	DO iseg = 1, nbdysege
617	ib_bdy = npckge(iseg)
618	!
619	! ------------ T points -------------
620	igrd=1
621	icount=0
622	DO ir = 1, nn_rimwidth(ib_bdy)
623	DO ij = jpjedt(iseg), jpjeft(iseg)
624	icount = icount + 1
625	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
626	nbjdta(icount, igrd, ib_bdy) = ij
627	nbrdta(icount, igrd, ib_bdy) = ir
628	ENDDO
629	ENDDO
630	!
631	! ------------ U points -------------
632	igrd=2
633	icount=0
634	DO ir = 1, nn_rimwidth(ib_bdy)
635	DO ij = jpjedt(iseg), jpjeft(iseg)
636	icount = icount + 1
637	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
638	nbjdta(icount, igrd, ib_bdy) = ij
639	nbrdta(icount, igrd, ib_bdy) = ir
640	ENDDO
641	ENDDO
642	!
643	! ------------ V points -------------
644	igrd=3
645	icount=0
646	DO ir = 1, nn_rimwidth(ib_bdy)
647	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
648	DO ij = jpjedt(iseg), jpjeft(iseg)
649	icount = icount + 1
650	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
651	nbjdta(icount, igrd, ib_bdy) = ij
652	nbrdta(icount, igrd, ib_bdy) = ir
653	ENDDO
654	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
655	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
656	ENDDO
657	ENDDO
658	!
659	! West
660	!-----
661	DO iseg = 1, nbdysegw
662	ib_bdy = npckgw(iseg)
663	!
664	! ------------ T points -------------
665	igrd=1
666	icount=0
667	DO ir = 1, nn_rimwidth(ib_bdy)
668	DO ij = jpjwdt(iseg), jpjwft(iseg)
669	icount = icount + 1
670	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
671	nbjdta(icount, igrd, ib_bdy) = ij
672	nbrdta(icount, igrd, ib_bdy) = ir
673	ENDDO
674	ENDDO
675	!
676	! ------------ U points -------------
677	igrd=2
678	icount=0
679	DO ir = 1, nn_rimwidth(ib_bdy)
680	DO ij = jpjwdt(iseg), jpjwft(iseg)
681	icount = icount + 1
682	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
683	nbjdta(icount, igrd, ib_bdy) = ij
684	nbrdta(icount, igrd, ib_bdy) = ir
685	ENDDO
686	ENDDO
687	!
688	! ------------ V points -------------
689	igrd=3
690	icount=0
691	DO ir = 1, nn_rimwidth(ib_bdy)
692	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
693	DO ij = jpjwdt(iseg), jpjwft(iseg)
694	icount = icount + 1
695	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
696	nbjdta(icount, igrd, ib_bdy) = ij
697	nbrdta(icount, igrd, ib_bdy) = ir
698	ENDDO
699	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
700	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
701	ENDDO
702	ENDDO
703	!
704	! North
705	!-----
706	DO iseg = 1, nbdysegn
707	ib_bdy = npckgn(iseg)
708	!
709	! ------------ T points -------------
710	igrd=1
711	icount=0
712	DO ir = 1, nn_rimwidth(ib_bdy)
713	DO ii = jpindt(iseg), jpinft(iseg)
714	icount = icount + 1
715	nbidta(icount, igrd, ib_bdy) = ii
716	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
717	nbrdta(icount, igrd, ib_bdy) = ir
718	ENDDO
719	ENDDO
720	!
721	! ------------ U points -------------
722	igrd=2
723	icount=0
724	DO ir = 1, nn_rimwidth(ib_bdy)
725	! DO ii = jpindt(iseg), jpinft(iseg) - 1
726	DO ii = jpindt(iseg), jpinft(iseg)
727	icount = icount + 1
728	nbidta(icount, igrd, ib_bdy) = ii
729	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
730	nbrdta(icount, igrd, ib_bdy) = ir
731	ENDDO
732	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
733	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
734	ENDDO
735	!
736	! ------------ V points -------------
737	igrd=3
738	icount=0
739	DO ir = 1, nn_rimwidth(ib_bdy)
740	DO ii = jpindt(iseg), jpinft(iseg)
741	icount = icount + 1
742	nbidta(icount, igrd, ib_bdy) = ii
743	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
744	nbrdta(icount, igrd, ib_bdy) = ir
745	ENDDO
746	ENDDO
747	ENDDO
748	!
749	! South
750	!-----
751	DO iseg = 1, nbdysegs
752	ib_bdy = npckgs(iseg)
753	!
754	! ------------ T points -------------
755	igrd=1
756	icount=0
757	DO ir = 1, nn_rimwidth(ib_bdy)
758	DO ii = jpisdt(iseg), jpisft(iseg)
759	icount = icount + 1
760	nbidta(icount, igrd, ib_bdy) = ii
761	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
762	nbrdta(icount, igrd, ib_bdy) = ir
763	ENDDO
764	ENDDO
765	!
766	! ------------ U points -------------
767	igrd=2
768	icount=0
769	DO ir = 1, nn_rimwidth(ib_bdy)
770	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
771	DO ii = jpisdt(iseg), jpisft(iseg)
772	icount = icount + 1
773	nbidta(icount, igrd, ib_bdy) = ii
774	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
775	nbrdta(icount, igrd, ib_bdy) = ir
776	ENDDO
777	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
778	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
779	ENDDO
780	!
781	! ------------ V points -------------
782	igrd=3
783	icount=0
784	DO ir = 1, nn_rimwidth(ib_bdy)
785	DO ii = jpisdt(iseg), jpisft(iseg)
786	icount = icount + 1
787	nbidta(icount, igrd, ib_bdy) = ii
788	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
789	nbrdta(icount, igrd, ib_bdy) = ir
790	ENDDO
791	ENDDO
792	ENDDO
793
794	! Deal with duplicated points
795	!-----------------------------
796	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
797	! if their distance to the bdy is greater than the other
798	! If their distance are the same, just keep only one to avoid updating a point twice
799	DO igrd = 1, jpbgrd
800	DO ib_bdy1 = 1, nb_bdy
801	DO ib_bdy2 = 1, nb_bdy
802	IF (ib_bdy1/=ib_bdy2) THEN
803	DO ib1 = 1, nblendta(igrd,ib_bdy1)
804	DO ib2 = 1, nblendta(igrd,ib_bdy2)
805	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
806	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
807	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
808	! & nbidta(ib1, igrd, ib_bdy1), &
809	! & nbjdta(ib2, igrd, ib_bdy2)
810	! keep only points with the lowest distance to boundary:
811	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
812	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
813	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
814	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
815	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
816	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
817	! Arbitrary choice if distances are the same:
818	ELSE
819	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
820	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
821	ENDIF
822	END IF
823	END DO
824	END DO
825	ENDIF
826	END DO
827	END DO
828	END DO
829
830	! Work out dimensions of boundary data on each processor
831	! ------------------------------------------------------
832
833	! Rather assume that boundary data indices are given on global domain
834	! TO BE DISCUSSED ?
835	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
836	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
837	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
838	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
839	iwe = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
840	ies = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
841	iso = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
842	ino = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
843
844	ALLOCATE( nbondi_bdy(nb_bdy))
845	ALLOCATE( nbondj_bdy(nb_bdy))
846	nbondi_bdy(:)=2
847	nbondj_bdy(:)=2
848	ALLOCATE( nbondi_bdy_b(nb_bdy))
849	ALLOCATE( nbondj_bdy_b(nb_bdy))
850	nbondi_bdy_b(:)=2
851	nbondj_bdy_b(:)=2
852
853	! Work out dimensions of boundary data on each neighbour process
854	IF(nbondi .eq. 0) THEN
855	iw_b(1) = jpizoom + nimppt(nowe+1)
856	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
857	is_b(1) = jpjzoom + njmppt(nowe+1)
858	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
859
860	iw_b(2) = jpizoom + nimppt(noea+1)
861	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
862	is_b(2) = jpjzoom + njmppt(noea+1)
863	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
864	ELSEIF(nbondi .eq. 1) THEN
865	iw_b(1) = jpizoom + nimppt(nowe+1)
866	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
867	is_b(1) = jpjzoom + njmppt(nowe+1)
868	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
869	ELSEIF(nbondi .eq. -1) THEN
870	iw_b(2) = jpizoom + nimppt(noea+1)
871	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
872	is_b(2) = jpjzoom + njmppt(noea+1)
873	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
874	ENDIF
875
876	IF(nbondj .eq. 0) THEN
877	iw_b(3) = jpizoom + nimppt(noso+1)
878	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
879	is_b(3) = jpjzoom + njmppt(noso+1)
880	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
881
882	iw_b(4) = jpizoom + nimppt(nono+1)
883	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
884	is_b(4) = jpjzoom + njmppt(nono+1)
885	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
886	ELSEIF(nbondj .eq. 1) THEN
887	iw_b(3) = jpizoom + nimppt(noso+1)
888	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
889	is_b(3) = jpjzoom + njmppt(noso+1)
890	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
891	ELSEIF(nbondj .eq. -1) THEN
892	iw_b(4) = jpizoom + nimppt(nono+1)
893	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
894	is_b(4) = jpjzoom + njmppt(nono+1)
895	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
896	ENDIF
897
898	DO ib_bdy = 1, nb_bdy
899	DO igrd = 1, jpbgrd
900	icount = 0
901	icountr = 0
902	idx_bdy(ib_bdy)%nblen(igrd) = 0
903	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
904	DO ib = 1, nblendta(igrd,ib_bdy)
905	! check that data is in correct order in file
906	ibm1 = MAX(1,ib-1)
907	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
908	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
909	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined ', &
910	& ' in order of distance from edge nbr A utility for re-ordering ', &
911	& ' boundary coordinates and data files exists in the TOOLS/OBC directory')
912	ENDIF
913	ENDIF
914	! check if point is in local domain
915	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
916	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino ) THEN
917	!
918	icount = icount + 1
919	!
920	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
921	ENDIF
922	ENDDO
923	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
924	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
925	ENDDO ! igrd
926
927	! Allocate index arrays for this boundary set
928	!--------------------------------------------
929	ilen1 = MAXVAL(idx_bdy(ib_bdy)%nblen(:))
930	ALLOCATE( idx_bdy(ib_bdy)%nbi(ilen1,jpbgrd) )
931	ALLOCATE( idx_bdy(ib_bdy)%nbj(ilen1,jpbgrd) )
932	ALLOCATE( idx_bdy(ib_bdy)%nbr(ilen1,jpbgrd) )
933	ALLOCATE( idx_bdy(ib_bdy)%nbd(ilen1,jpbgrd) )
934	ALLOCATE( idx_bdy(ib_bdy)%nbdout(ilen1,jpbgrd) )
935	ALLOCATE( idx_bdy(ib_bdy)%nbmap(ilen1,jpbgrd) )
936	ALLOCATE( idx_bdy(ib_bdy)%nbw(ilen1,jpbgrd) )
937	ALLOCATE( idx_bdy(ib_bdy)%flagu(ilen1,jpbgrd) )
938	ALLOCATE( idx_bdy(ib_bdy)%flagv(ilen1,jpbgrd) )
939
940	! Dispatch mapping indices and discrete distances on each processor
941	! -----------------------------------------------------------------
942
943	com_east = 0
944	com_west = 0
945	com_south = 0
946	com_north = 0
947
948	com_east_b = 0
949	com_west_b = 0
950	com_south_b = 0
951	com_north_b = 0
952
953	DO igrd = 1, jpbgrd
954	icount = 0
955	! Loop on rimwidth to ensure outermost points come first in the local arrays.
956	DO ir=1, nn_rimwidth(ib_bdy)
957	DO ib = 1, nblendta(igrd,ib_bdy)
958	! check if point is in local domain and equals ir
959	IF( nbidta(ib,igrd,ib_bdy) >= iwe .AND. nbidta(ib,igrd,ib_bdy) <= ies .AND. &
960	& nbjdta(ib,igrd,ib_bdy) >= iso .AND. nbjdta(ib,igrd,ib_bdy) <= ino .AND. &
961	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
962	!
963	icount = icount + 1
964
965	! Rather assume that boundary data indices are given on global domain
966	! TO BE DISCUSSED ?
967	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
968	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
969	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
970	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
971	! check if point has to be sent
972	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
973	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
974	if((com_east .ne. 1) .and. (ii .eq. (nlci-1)) .and. (nbondi .le. 0)) then
975	com_east = 1
976	elseif((com_west .ne. 1) .and. (ii .eq. 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
977	com_west = 1
978	endif
979	if((com_south .ne. 1) .and. (ij .eq. 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
980	com_south = 1
981	elseif((com_north .ne. 1) .and. (ij .eq. (nlcj-1)) .and. (nbondj .le. 0)) then
982	com_north = 1
983	endif
984	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
985	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
986	ENDIF
987	! check if point has to be received from a neighbour
988	IF(nbondi .eq. 0) THEN
989	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
990	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
991	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
992	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
993	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
994	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
995	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
996	com_south = 1
997	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
998	com_north = 1
999	endif
1000	com_west_b = 1
1001	endif
1002	ENDIF
1003	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
1004	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
1005	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1006	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
1007	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
1008	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
1009	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
1010	com_south = 1
1011	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
1012	com_north = 1
1013	endif
1014	com_east_b = 1
1015	endif
1016	ENDIF
1017	ELSEIF(nbondi .eq. 1) THEN
1018	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
1019	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
1020	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1021	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
1022	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
1023	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
1024	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
1025	com_south = 1
1026	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
1027	com_north = 1
1028	endif
1029	com_west_b = 1
1030	endif
1031	ENDIF
1032	ELSEIF(nbondi .eq. -1) THEN
1033	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
1034	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
1035	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1036	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
1037	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
1038	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
1039	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
1040	com_south = 1
1041	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
1042	com_north = 1
1043	endif
1044	com_east_b = 1
1045	endif
1046	ENDIF
1047	ENDIF
1048	IF(nbondj .eq. 0) THEN
1049	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1050	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1051	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1052	com_north_b = 1
1053	ENDIF
1054	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 &
1055	&.OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1056	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1057	com_south_b = 1
1058	ENDIF
1059	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1060	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1061	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1062	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1063	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1064	com_south_b = 1
1065	endif
1066	ENDIF
1067	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1068	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1069	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1070	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1071	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1072	com_north_b = 1
1073	endif
1074	ENDIF
1075	ELSEIF(nbondj .eq. 1) THEN
1076	IF( com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. &
1077	& nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
1078	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1079	com_south_b = 1
1080	ENDIF
1081	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
1082	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
1083	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1084	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
1085	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
1086	com_south_b = 1
1087	endif
1088	ENDIF
1089	ELSEIF(nbondj .eq. -1) THEN
1090	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 &
1091	& .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
1092	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
1093	com_north_b = 1
1094	ENDIF
1095	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
1096	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
1097	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
1098	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
1099	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
1100	com_north_b = 1
1101	endif
1102	ENDIF
1103	ENDIF
1104	ENDDO
1105	ENDDO
1106	ENDDO
1107
1108	! definition of the i- and j- direction local boundaries arrays
1109	! used for sending the boudaries
1110	IF((com_east .eq. 1) .and. (com_west .eq. 1)) THEN
1111	nbondi_bdy(ib_bdy) = 0
1112	ELSEIF ((com_east .eq. 1) .and. (com_west .eq. 0)) THEN
1113	nbondi_bdy(ib_bdy) = -1
1114	ELSEIF ((com_east .eq. 0) .and. (com_west .eq. 1)) THEN
1115	nbondi_bdy(ib_bdy) = 1
1116	ENDIF
1117
1118	IF((com_north .eq. 1) .and. (com_south .eq. 1)) THEN
1119	nbondj_bdy(ib_bdy) = 0
1120	ELSEIF ((com_north .eq. 1) .and. (com_south .eq. 0)) THEN
1121	nbondj_bdy(ib_bdy) = -1
1122	ELSEIF ((com_north .eq. 0) .and. (com_south .eq. 1)) THEN
1123	nbondj_bdy(ib_bdy) = 1
1124	ENDIF
1125
1126	! definition of the i- and j- direction local boundaries arrays
1127	! used for receiving the boudaries
1128	IF((com_east_b .eq. 1) .and. (com_west_b .eq. 1)) THEN
1129	nbondi_bdy_b(ib_bdy) = 0
1130	ELSEIF ((com_east_b .eq. 1) .and. (com_west_b .eq. 0)) THEN
1131	nbondi_bdy_b(ib_bdy) = -1
1132	ELSEIF ((com_east_b .eq. 0) .and. (com_west_b .eq. 1)) THEN
1133	nbondi_bdy_b(ib_bdy) = 1
1134	ENDIF
1135
1136	IF((com_north_b .eq. 1) .and. (com_south_b .eq. 1)) THEN
1137	nbondj_bdy_b(ib_bdy) = 0
1138	ELSEIF ((com_north_b .eq. 1) .and. (com_south_b .eq. 0)) THEN
1139	nbondj_bdy_b(ib_bdy) = -1
1140	ELSEIF ((com_north_b .eq. 0) .and. (com_south_b .eq. 1)) THEN
1141	nbondj_bdy_b(ib_bdy) = 1
1142	ENDIF
1143
1144	! Compute rim weights for FRS scheme
1145	! ----------------------------------
1146	DO igrd = 1, jpbgrd
1147	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1148	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1149	! idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) * 0.5 &
1150	! & *(10./ FLOAT(nn_rimwidth(ib_bdy))) ) ! JGraham:modified for rim=15
1151	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) ! tanh formulation !CBIJ MC config rim=1
1152	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))**2. ! quadratic
1153	! idx_bdy(ib_bdy)%nbw(ib,igrd) = FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)) ! linear
1154	END DO
1155	END DO
1156
1157	! Compute damping coefficients
1158	! ----------------------------
1159	DO igrd = 1, jpbgrd
1160	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1161	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1162	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
1163	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1164	idx_bdy(ib_bdy)%nbdout(ib,igrd) = 1. / ( rn_time_dmp_out(ib_bdy) * rday ) &
1165	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
1166	END DO
1167	END DO
1168	! Compute multiplier for diffusion for sponge layer !CEOD
1169	! -------------------------------------------------
1170	IF( ln_sponge(ib_bdy) ) THEN
1171	igrd=1
1172	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
1173	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1174	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1175	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
1176	sponge_factor(nbi,nbj) = 1.0 + (rn_sponge-1.0) * ( 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) )
1177	! 0.5 factor says how fast tanh goes to 1 - reduce this to have
1178	! effect on more of the rimwidth
1179	END DO
1180	ENDIF
1181
1182	ENDDO
1183
1184	! ------------------------------------------------------
1185	! Initialise masks and find normal/tangential directions
1186	! ------------------------------------------------------
1187
1188	! Read global 2D mask at T-points: bdytmask
1189	! -----------------------------------------
1190	! bdytmask = 1 on the computational domain AND on open boundaries
1191	! = 0 elsewhere
1192
1193	IF( ln_mask_file ) THEN
1194	CALL iom_open( cn_mask_file, inum )
1195	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
1196	CALL iom_close( inum )
1197
1198	! Derive mask on U and V grid from mask on T grid
1199	bdyumask(:,:) = 0.e0
1200	bdyvmask(:,:) = 0.e0
1201	DO ij=1, jpjm1
1202	DO ii=1, jpim1
1203	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1204	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1205	END DO
1206	END DO
1207	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1208
1209
1210	! Mask corrections
1211	! ----------------
1212	DO ik = 1, jpkm1
1213	DO ij = 1, jpj
1214	DO ii = 1, jpi
1215	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
1216	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
1217	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
1218	bmask(ii,ij) = bmask(ii,ij) * bdytmask(ii,ij)
1219	END DO
1220	END DO
1221	END DO
1222
1223	DO ik = 1, jpkm1
1224	DO ij = 2, jpjm1
1225	DO ii = 2, jpim1
1226	fmask(ii,ij,ik) = fmask(ii,ij,ik) * bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
1227	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
1228	END DO
1229	END DO
1230	END DO
1231
1232	tmask_i (:,:) = ssmask(:,:) * tmask_i(:,:)
1233
1234	ENDIF ! ln_mask_file=.TRUE.
1235
1236	bdytmask(:,:) = ssmask(:,:)
1237	IF( .not. ln_mask_file ) THEN
1238	! If .not. ln_mask_file then we need to derive mask on U and V grid
1239	! from mask on T grid here.
1240	bdyumask(:,:) = 0.e0
1241	bdyvmask(:,:) = 0.e0
1242	DO ij=1, jpjm1
1243	DO ii=1, jpim1
1244	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
1245	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
1246	END DO
1247	END DO
1248	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
1249	ENDIF
1250
1251	! bdy masks and bmask are now set to zero on boundary points:
1252	igrd = 1 ! In the free surface case, bmask is at T-points
1253	DO ib_bdy = 1, nb_bdy
1254	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1255	bmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1256	ENDDO
1257	ENDDO
1258	!
1259	igrd = 1
1260	DO ib_bdy = 1, nb_bdy
1261	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1262	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1263	ENDDO
1264	ENDDO
1265	!
1266	igrd = 2
1267	DO ib_bdy = 1, nb_bdy
1268	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1269	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1270	ENDDO
1271	ENDDO
1272	!
1273	igrd = 3
1274	DO ib_bdy = 1, nb_bdy
1275	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1276	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
1277	ENDDO
1278	ENDDO
1279
1280	! For the flagu/flagv calculation below we require a version of fmask without
1281	! the land boundary condition (shlat) included:
1282	CALL wrk_alloc(jpi,jpj,zfmask)
1283	DO ij = 2, jpjm1
1284	DO ii = 2, jpim1
1285	zfmask(ii,ij) = tmask(ii,ij ,1) * tmask(ii+1,ij ,1) &
1286	& * tmask(ii,ij+1,1) * tmask(ii+1,ij+1,1)
1287	END DO
1288	END DO
1289
1290	! Lateral boundary conditions
1291	CALL lbc_lnk( zfmask , 'F', 1. )
1292	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
1293	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
1294
1295	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
1296
1297	idx_bdy(ib_bdy)%flagu(:,:) = 0.e0
1298	idx_bdy(ib_bdy)%flagv(:,:) = 0.e0
1299	icount = 0
1300
1301	! Calculate relationship of U direction to the local orientation of the boundary
1302	! flagu = -1 : u component is normal to the dynamical boundary and its direction is outward
1303	! flagu = 0 : u is tangential
1304	! flagu = 1 : u is normal to the boundary and is direction is inward
1305
1306	DO igrd = 1,jpbgrd
1307	SELECT CASE( igrd )
1308	CASE( 1 )
1309	pmask => umask(:,:,1)
1310	i_offset = 0
1311	CASE( 2 )
1312	pmask => bdytmask
1313	i_offset = 1
1314	CASE( 3 )
1315	pmask => zfmask(:,:)
1316	i_offset = 0
1317	END SELECT
1318	icount = 0
1319	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1320	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1321	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1322	zefl = pmask(nbi+i_offset-1,nbj)
1323	zwfl = pmask(nbi+i_offset,nbj)
1324	! This error check only works if you are using the bdyXmask arrays
1325	IF( i_offset == 1 .and. zefl + zwfl == 2 ) THEN
1326	icount = icount + 1
1327	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1328	ELSE
1329	idx_bdy(ib_bdy)%flagu(ib,igrd) = -zefl + zwfl
1330	ENDIF
1331	END DO
1332	IF( icount /= 0 ) THEN
1333	IF(lwp) WRITE(numout,*)
1334	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1335	' are not boundary points (flagu calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1336	IF(lwp) WRITE(numout,*) ' ========== '
1337	IF(lwp) WRITE(numout,*)
1338	nstop = nstop + 1
1339	ENDIF
1340	END DO
1341
1342	! Calculate relationship of V direction to the local orientation of the boundary
1343	! flagv = -1 : v component is normal to the dynamical boundary but its direction is outward
1344	! flagv = 0 : v is tangential
1345	! flagv = 1 : v is normal to the boundary and is direction is inward
1346
1347	DO igrd = 1,jpbgrd
1348	SELECT CASE( igrd )
1349	CASE( 1 )
1350	pmask => vmask(:,:,1)
1351	j_offset = 0
1352	CASE( 2 )
1353	pmask => zfmask(:,:)
1354	j_offset = 0
1355	CASE( 3 )
1356	pmask => bdytmask
1357	j_offset = 1
1358	END SELECT
1359	icount = 0
1360	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1361	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1362	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1363	znfl = pmask(nbi,nbj+j_offset-1 )
1364	zsfl = pmask(nbi,nbj+j_offset)
1365	! This error check only works if you are using the bdyXmask arrays
1366	IF( j_offset == 1 .and. znfl + zsfl == 2 ) THEN
1367	IF(lwp) WRITE(numout,*) 'Problem with igrd = ',igrd,' at (global) nbi, nbj : ',mig(nbi),mjg(nbj)
1368	icount = icount + 1
1369	ELSE
1370	idx_bdy(ib_bdy)%flagv(ib,igrd) = -znfl + zsfl
1371	END IF
1372	END DO
1373	IF( icount /= 0 ) THEN
1374	IF(lwp) WRITE(numout,*)
1375	IF(lwp) WRITE(numout,*) ' E R R O R : Some ',cgrid(igrd),' grid points,', &
1376	' are not boundary points (flagv calculation). Check nbi, nbj, indices for boundary set ',ib_bdy
1377	IF(lwp) WRITE(numout,*) ' ========== '
1378	IF(lwp) WRITE(numout,*)
1379	nstop = nstop + 1
1380	ENDIF
1381	END DO
1382
1383	END DO
1384
1385	! Compute total lateral surface for volume correction:
1386	! ----------------------------------------------------
1387	! JC: this must be done at each time step with key_vvl
1388	bdysurftot = 0.e0
1389	IF( ln_vol ) THEN
1390	igrd = 2 ! Lateral surface at U-points
1391	DO ib_bdy = 1, nb_bdy
1392	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1393	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1394	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1395	flagu => idx_bdy(ib_bdy)%flagu(ib,igrd)
1396	bdysurftot = bdysurftot + hu (nbi , nbj) &
1397	& * e2u (nbi , nbj) * ABS( flagu ) &
1398	& * tmask_i(nbi , nbj) &
1399	& * tmask_i(nbi+1, nbj)
1400	ENDDO
1401	ENDDO
1402
1403	igrd=3 ! Add lateral surface at V-points
1404	DO ib_bdy = 1, nb_bdy
1405	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
1406	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
1407	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
1408	flagv => idx_bdy(ib_bdy)%flagv(ib,igrd)
1409	bdysurftot = bdysurftot + hv (nbi, nbj ) &
1410	& * e1v (nbi, nbj ) * ABS( flagv ) &
1411	& * tmask_i(nbi, nbj ) &
1412	& * tmask_i(nbi, nbj+1)
1413	ENDDO
1414	ENDDO
1415	!
1416	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
1417	END IF
1418	!
1419	! Tidy up
1420	!--------
1421	IF (nb_bdy>0) THEN
1422	DEALLOCATE(nbidta, nbjdta, nbrdta)
1423	ENDIF
1424
1425	CALL wrk_dealloc(jpi,jpj,zfmask)
1426
1427	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
1428
1429	END SUBROUTINE bdy_init
1430
1431	SUBROUTINE bdy_ctl_seg
1432	!!----------------------------------------------------------------------
1433	!! * ROUTINE bdy_ctl_seg *
1434	!!
1435	!! ** Purpose : Check straight open boundary segments location
1436	!!
1437	!! ** Method : - Look for open boundary corners
1438	!! - Check that segments start or end on land
1439	!!----------------------------------------------------------------------
1440	INTEGER :: ib, ib1, ib2, ji ,jj, itest
1441	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
1442	REAL(wp), DIMENSION(2) :: ztestmask
1443	!!----------------------------------------------------------------------
1444	!
1445	IF (lwp) WRITE(numout,*) ' '
1446	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
1447	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
1448	!
1449	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
1450	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
1451	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
1452	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
1453	! 1. Check bounds
1454	!----------------
1455	DO ib = 1, nbdysegn
1456	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
1457	IF ((jpjnob(ib).ge.jpjglo-1).or.&
1458	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1459	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1460	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1461	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1462	END DO
1463	!
1464	DO ib = 1, nbdysegs
1465	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
1466	IF ((jpjsob(ib).ge.jpjglo-1).or.&
1467	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1468	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1469	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1470	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
1471	END DO
1472	!
1473	DO ib = 1, nbdysege
1474	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
1475	IF ((jpieob(ib).ge.jpiglo-1).or.&
1476	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1477	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1478	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1479	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1480	END DO
1481	!
1482	DO ib = 1, nbdysegw
1483	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
1484	IF ((jpiwob(ib).ge.jpiglo-1).or.&
1485	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
1486	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
1487	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
1488	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
1489	ENDDO
1490	!
1491	!
1492	! 2. Look for segment crossings
1493	!------------------------------
1494	IF (lwp) WRITE(numout,) '*Look for segments corners :'
1495	!
1496	itest = 0 ! corner number
1497	!
1498	! flag to detect if start or end of open boundary belongs to a corner
1499	! if not (=0), it must be on land.
1500	! if a corner is detected, save bdy package number for further tests
1501	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
1502	! South/West crossings
1503	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
1504	DO ib1 = 1, nbdysegw
1505	DO ib2 = 1, nbdysegs
1506	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
1507	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
1508	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
1509	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
1510	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
1511	! We have a possible South-West corner
1512	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
1513	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
1514	icornw(ib1,1) = npckgs(ib2)
1515	icorns(ib2,1) = npckgw(ib1)
1516	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) 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	& jpisft(ib2), jpjwft(ib1)
1520	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1521	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1522	& ' and South segment: ',npckgs(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 South and West Open boundary indices'
1528	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
1529	& ' and South segment: ',npckgs(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	! South/East crossings
1539	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
1540	DO ib1 = 1, nbdysege
1541	DO ib2 = 1, nbdysegs
1542	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
1543	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
1544	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
1545	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
1546	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
1547	! We have a possible South-East corner
1548	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
1549	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
1550	icorne(ib1,1) = npckgs(ib2)
1551	icorns(ib2,2) = npckge(ib1)
1552	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(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	& jpisdt(ib2), jpjeft(ib1)
1556	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1557	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1558	& ' and South segment: ',npckgs(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 South and East Open boundary indices'
1564	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1565	& ' and South segment: ',npckgs(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	! North/West crossings
1575	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
1576	DO ib1 = 1, nbdysegw
1577	DO ib2 = 1, nbdysegn
1578	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
1579	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
1580	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
1581	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
1582	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
1583	! We have a possible North-West corner
1584	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
1585	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
1586	icornw(ib1,2) = npckgn(ib2)
1587	icornn(ib2,1) = npckgw(ib1)
1588	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
1589	IF(lwp) WRITE(numout,*)
1590	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1591	& jpinft(ib2), jpjwdt(ib1)
1592	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1593	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
1594	& ' and North segment: ',npckgn(ib2)
1595	IF(lwp) WRITE(numout,*)
1596	nstop = nstop + 1
1597	ELSE
1598	IF(lwp) WRITE(numout,*)
1599	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
1600	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
1601	& ' and North segment: ',npckgn(ib2)
1602	IF(lwp) WRITE(numout,*)
1603	nstop = nstop + 1
1604	END IF
1605	END IF
1606	END DO
1607	END DO
1608	END IF
1609	!
1610	! North/East crossings
1611	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
1612	DO ib1 = 1, nbdysege
1613	DO ib2 = 1, nbdysegn
1614	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
1615	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
1616	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
1617	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
1618	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
1619	! We have a possible North-East corner
1620	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
1621	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
1622	icorne(ib1,2) = npckgn(ib2)
1623	icornn(ib2,2) = npckge(ib1)
1624	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
1625	IF(lwp) WRITE(numout,*)
1626	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
1627	& jpindt(ib2), jpjedt(ib1)
1628	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
1629	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
1630	& ' and North segment: ',npckgn(ib2)
1631	IF(lwp) WRITE(numout,*)
1632	nstop = nstop + 1
1633	ELSE
1634	IF(lwp) WRITE(numout,*)
1635	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
1636	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
1637	& ' and North segment: ',npckgn(ib2)
1638	IF(lwp) WRITE(numout,*)
1639	nstop = nstop + 1
1640	END IF
1641	END IF
1642	END DO
1643	END DO
1644	END IF
1645	!
1646	! 3. Check if segment extremities are on land
1647	!--------------------------------------------
1648	!
1649	! West segments
1650	DO ib = 1, nbdysegw
1651	! get mask at boundary extremities:
1652	ztestmask(1:2)=0.
1653	DO ji = 1, jpi
1654	DO jj = 1, jpj
1655	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1656	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1657	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
1658	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
1659	END DO
1660	END DO
1661	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1662
1663	IF (ztestmask(1)==1) THEN
1664	IF (icornw(ib,1)==0) THEN
1665	IF(lwp) WRITE(numout,*)
1666	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1667	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1668	IF(lwp) WRITE(numout,*)
1669	nstop = nstop + 1
1670	ELSE
1671	! This is a corner
1672	IF(lwp) WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
1673	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
1674	itest=itest+1
1675	ENDIF
1676	ENDIF
1677	IF (ztestmask(2)==1) THEN
1678	IF (icornw(ib,2)==0) THEN
1679	IF(lwp) WRITE(numout,*)
1680	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
1681	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1682	IF(lwp) WRITE(numout,*)
1683	nstop = nstop + 1
1684	ELSE
1685	! This is a corner
1686	IF(lwp) WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
1687	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
1688	itest=itest+1
1689	ENDIF
1690	ENDIF
1691	END DO
1692	!
1693	! East segments
1694	DO ib = 1, nbdysege
1695	! get mask at boundary extremities:
1696	ztestmask(1:2)=0.
1697	DO ji = 1, jpi
1698	DO jj = 1, jpj
1699	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1700	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
1701	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
1702	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
1703	END DO
1704	END DO
1705	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1706
1707	IF (ztestmask(1)==1) THEN
1708	IF (icorne(ib,1)==0) THEN
1709	IF(lwp) WRITE(numout,*)
1710	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1711	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1712	IF(lwp) WRITE(numout,*)
1713	nstop = nstop + 1
1714	ELSE
1715	! This is a corner
1716	IF(lwp) WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
1717	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
1718	itest=itest+1
1719	ENDIF
1720	ENDIF
1721	IF (ztestmask(2)==1) THEN
1722	IF (icorne(ib,2)==0) THEN
1723	IF(lwp) WRITE(numout,*)
1724	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
1725	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1726	IF(lwp) WRITE(numout,*)
1727	nstop = nstop + 1
1728	ELSE
1729	! This is a corner
1730	IF(lwp) WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
1731	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
1732	itest=itest+1
1733	ENDIF
1734	ENDIF
1735	END DO
1736	!
1737	! South segments
1738	DO ib = 1, nbdysegs
1739	! get mask at boundary extremities:
1740	ztestmask(1:2)=0.
1741	DO ji = 1, jpi
1742	DO jj = 1, jpj
1743	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1744	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
1745	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
1746	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
1747	END DO
1748	END DO
1749	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1750
1751	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
1752	IF(lwp) WRITE(numout,*)
1753	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1754	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
1755	IF(lwp) WRITE(numout,*)
1756	nstop = nstop + 1
1757	ENDIF
1758	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
1759	IF(lwp) WRITE(numout,*)
1760	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
1761	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
1762	IF(lwp) WRITE(numout,*)
1763	nstop = nstop + 1
1764	ENDIF
1765	END DO
1766	!
1767	! North segments
1768	DO ib = 1, nbdysegn
1769	! get mask at boundary extremities:
1770	ztestmask(1:2)=0.
1771	DO ji = 1, jpi
1772	DO jj = 1, jpj
1773	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1774	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
1775	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
1776	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
1777	END DO
1778	END DO
1779	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
1780
1781	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
1782	IF(lwp) WRITE(numout,*)
1783	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1784	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
1785	IF(lwp) WRITE(numout,*)
1786	nstop = nstop + 1
1787	ENDIF
1788	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
1789	IF(lwp) WRITE(numout,*)
1790	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
1791	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
1792	IF(lwp) WRITE(numout,*)
1793	nstop = nstop + 1
1794	ENDIF
1795	END DO
1796	!
1797	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
1798	!
1799	! Other tests TBD:
1800	! segments completly on land
1801	! optimized open boundary array length according to landmask
1802	! Nudging layers that overlap with interior domain
1803	!
1804	END SUBROUTINE bdy_ctl_seg
1805
1806	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
1807	!!----------------------------------------------------------------------
1808	!! * ROUTINE bdy_ctl_corn *
1809	!!
1810	!! ** Purpose : Check numerical schemes consistency between
1811	!! segments having a common corner
1812	!!
1813	!! ** Method :
1814	!!----------------------------------------------------------------------
1815	INTEGER, INTENT(in) :: ib1, ib2
1816	INTEGER :: itest
1817	!!----------------------------------------------------------------------
1818	itest = 0
1819
1820	IF (cn_dyn2d(ib1)/=cn_dyn2d(ib2)) itest = itest + 1
1821	IF (cn_dyn3d(ib1)/=cn_dyn3d(ib2)) itest = itest + 1
1822	IF (cn_tra(ib1)/=cn_tra(ib2)) itest = itest + 1
1823	!
1824	IF (nn_dyn2d_dta(ib1)/=nn_dyn2d_dta(ib2)) itest = itest + 1
1825	IF (nn_dyn3d_dta(ib1)/=nn_dyn3d_dta(ib2)) itest = itest + 1
1826	IF (nn_tra_dta(ib1)/=nn_tra_dta(ib2)) itest = itest + 1
1827	!
1828	IF (nn_rimwidth(ib1)/=nn_rimwidth(ib2)) itest = itest + 1
1829	!
1830	IF ( itest>0 ) THEN
1831	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
1832	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
1833	IF(lwp) WRITE(numout,*)
1834	nstop = nstop + 1
1835	ENDIF
1836	!
1837	END SUBROUTINE bdy_ctl_corn
1838
1839	#else
1840	!!---------------------------------------------------------------------------------
1841	!! Dummy module NO open boundaries
1842	!!---------------------------------------------------------------------------------
1843	CONTAINS
1844	SUBROUTINE bdy_init ! Dummy routine
1845	END SUBROUTINE bdy_init
1846	#endif
1847
1848	!!=================================================================================
1849	END MODULE bdyini

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source: branches/UKMO/CCRS_NUS_MC_STABLE/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 10064

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