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obcini.F90 in branches/DEV_r1879_FCM/NEMOGCM/NEMO/OPA_SRC/OBC – NEMO

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source: branches/DEV_r1879_FCM/NEMOGCM/NEMO/OPA_SRC/OBC/obcini.F90 @ 2204

Last change on this file since 2204 was 2204, checked in by rblod, 14 years ago
Merge FCM branch with the trunk
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 29.8 KB

Line
1	MODULE obcini
2	!!======================================================================
3	!! * MODULE obcini *
4	!! OBC initial state : Open boundary initial state
5	!!======================================================================
6	!! History : 8.0 ! 97-07 (J.M. Molines, G. Madec) Original code
7	!! NEMO 1.0 ! 02-11 (C. Talandier, A-M. Treguier) Free surface, F90
8	!! 2.0 ! 05-11 (V. Garnier) Surface pressure gradient organization
9	!!----------------------------------------------------------------------
10	#if defined key_obc
11	!!----------------------------------------------------------------------
12	!! 'key_obc' Open Boundary Conditions
13	!!----------------------------------------------------------------------
14	!! obc_init : initialization for the open boundary condition
15	!!----------------------------------------------------------------------
16	USE oce ! ocean dynamics and tracers variables
17	USE dom_oce ! ocean space and time domain variables
18	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
19	USE phycst ! physical constants
20	USE obc_oce ! ocean open boundary conditions
21	USE lib_mpp ! for mpp_sum
22	USE in_out_manager ! I/O units
23	USE dynspg_oce ! flag lk_dynspg_flt
24
25	IMPLICIT NONE
26	PRIVATE
27
28	PUBLIC obc_init ! routine called by opa.F90
29
30	!! * Substitutions
31	# include "obc_vectopt_loop_substitute.h90"
32	!!----------------------------------------------------------------------
33	!! NEMO/OPA 9.0 , LOCEAN-IPSL (2005)
34	!! $Id$
35	!! software governed by the CeCILL licence (NEMOGCM/License_CeCILL.txt)
36	!!----------------------------------------------------------------------
37
38	CONTAINS
39
40	SUBROUTINE obc_init
41	!!----------------------------------------------------------------------
42	!! * ROUTINE obc_init *
43	!!
44	!! ** Purpose : Initialization of the dynamics and tracer fields at
45	!! the open boundaries.
46	!!
47	!! ** Method : initialization of open boundary variables
48	!! (u, v) over 3 time step and 3 rows
49	!! (t, s) over 2 time step and 2 rows
50	!! if ln_rstart = .FALSE. : no restart, fields set to zero
51	!! if ln_rstart = .TRUE. : restart, fields are read in a file
52	!! if rdpxxx = 0 then lfbc is set true for this boundary.
53	!!
54	!! ** Input : restart.obc file, restart file for open boundaries
55	!!----------------------------------------------------------------------
56	USE obcrst, ONLY : obc_rst_read ! Make obc_rst_read routine available
57	!!
58	INTEGER :: ji, jj, istop , inumfbc
59	INTEGER, DIMENSION(4) :: icorner
60	REAL(wp), DIMENSION(2) :: ztestmask
61	!!
62	NAMELIST/namobc/ rn_dpein, rn_dpwin, rn_dpnin, rn_dpsin, &
63	& rn_dpeob, rn_dpwob, rn_dpnob, rn_dpsob, &
64	& rn_volemp, nn_obcdta, cn_obcdta, &
65	& ln_obc_clim, ln_vol_cst, ln_obc_fla
66	!!----------------------------------------------------------------------
67
68	REWIND( numnam ) ! Namelist namobc : open boundaries
69	READ ( numnam, namobc )
70
71	! convert DOCTOR namelist name into the OLD names
72	nbobc = 0
73	nobc_dta = nn_obcdta
74	cffile = cn_obcdta
75	rdpein = rn_dpein
76	rdpwin = rn_dpwin
77	rdpsin = rn_dpsin
78	rdpnin = rn_dpnin
79	rdpeob = rn_dpeob
80	rdpwob = rn_dpwob
81	rdpsob = rn_dpsob
82	rdpnob = rn_dpnob
83	volemp = rn_volemp
84
85
86
87	! By security we set rdpxin and rdpxob respectively to 1. and 15. if the corresponding OBC is not activated
88	IF( .NOT.lp_obc_east ) THEN ; rdpein = 1. ; rdpeob = 15. ; END IF
89	IF( .NOT.lp_obc_west ) THEN ; rdpwin = 1. ; rdpwob = 15. ; END IF
90	IF( .NOT.lp_obc_north ) THEN ; rdpnin = 1. ; rdpnob = 15. ; END IF
91	IF( .NOT.lp_obc_south ) THEN ; rdpsin = 1. ; rdpsob = 15. ; END IF
92
93	! number of open boudaries and open boundary indicators
94	nbobc = 0
95	IF( lp_obc_east ) nbobc = nbobc + 1
96	IF( lp_obc_west ) nbobc = nbobc + 1
97	IF( lp_obc_north ) nbobc = nbobc + 1
98	IF( lp_obc_south ) nbobc = nbobc + 1
99
100	IF(lwp) WRITE(numout,*)
101	IF(lwp) WRITE(numout,*) 'obc_init : initialization of open boundaries'
102	IF(lwp) WRITE(numout,*) '~~~~~~~~'
103	IF(lwp) WRITE(numout,*) ' Number of open boundaries nbobc = ', nbobc
104	IF(lwp) WRITE(numout,*)
105
106	! control prints
107	IF(lwp) WRITE(numout,*) ' Namelist namobc'
108	IF(lwp) WRITE(numout,*) ' data in file (=1) or initial state used (=0) nn_obcdta = ', nn_obcdta
109	IF(lwp) WRITE(numout,*) ' climatology (true) or not ln_obc_clim = ', ln_obc_clim
110	IF(lwp) WRITE(numout,*) ' vol_cst (true) or not: ln_vol_cst = ', ln_vol_cst
111	IF(lwp) WRITE(numout,*) ' '
112	IF(lwp) WRITE(numout,*) ' WARNING '
113	IF(lwp) WRITE(numout,*) ' Flather"s algorithm is applied with explicit free surface scheme '
114	IF(lwp) WRITE(numout,*) ' or with free surface time-splitting scheme '
115	IF(lwp) WRITE(numout,*) ' Nor radiation neither relaxation is allowed with explicit free surface scheme: '
116	IF(lwp) WRITE(numout,*) ' Radiation and/or relaxation is allowed with free surface time-splitting scheme '
117	IF(lwp) WRITE(numout,*) ' depending of the choice of rdpXin = rdpXob = 0. for open boundaries '
118	IF(lwp) WRITE(numout,*)
119	IF(lwp) WRITE(numout,*) ' For the filtered free surface case, '
120	IF(lwp) WRITE(numout,*) ' radiation, relaxation or presciption of data can be applied '
121	IF(lwp) WRITE(numout,*)
122
123	IF( lwp.AND.lp_obc_east ) THEN
124	WRITE(numout,*) ' East open boundary :'
125	WRITE(numout,*) ' i index jpieob = ', jpieob
126	WRITE(numout,*) ' damping time scale (days) rn_dpeob = ', rn_dpeob
127	WRITE(numout,*) ' damping time scale (days) rn_dpein = ', rn_dpein
128	ENDIF
129
130	IF( lwp.AND.lp_obc_west ) THEN
131	WRITE(numout,*) ' West open boundary :'
132	WRITE(numout,*) ' i index jpiwob = ', jpiwob
133	WRITE(numout,*) ' damping time scale (days) rn_dpwob = ', rn_dpwob
134	WRITE(numout,*) ' damping time scale (days) rn_dpwin = ', rn_dpwin
135	ENDIF
136
137	IF( lwp.AND.lp_obc_north ) THEN
138	WRITE(numout,*) ' North open boundary :'
139	WRITE(numout,*) ' j index jpjnob = ', jpjnob
140	WRITE(numout,*) ' damping time scale (days) rn_dpnob = ', rn_dpnob
141	WRITE(numout,*) ' damping time scale (days) rn_dpnin = ', rn_dpnin
142	ENDIF
143
144	IF( lwp.AND.lp_obc_south ) THEN
145	WRITE(numout,*) ' South open boundary :'
146	WRITE(numout,*) ' j index jpjsob = ', jpjsob
147	WRITE(numout,*) ' damping time scale (days) rn_dpsob = ', rn_dpsob
148	WRITE(numout,*) ' damping time scale (days) rn_dpsin = ', rn_dpsin
149	WRITE(numout,*)
150	ENDIF
151
152	IF( nbobc >= 2 .AND. jperio /= 0 ) &
153	& CALL ctl_stop( ' Cyclic or symmetric, and open boundary condition are not compatible' )
154
155	! 1. Initialisation of constants
156	! ------------------------------
157	! ... convert rdp$ob in seconds
158	! Fixed Bdy flag inbound outbound
159	lfbceast = .FALSE. ; rdpein = rdpein * rday ; rdpeob = rdpeob * rday
160	lfbcwest = .FALSE. ; rdpwin = rdpwin * rday ; rdpwob = rdpwob * rday
161	lfbcnorth = .FALSE. ; rdpnin = rdpnin * rday ; rdpnob = rdpnob * rday
162	lfbcsouth = .FALSE. ; rdpsin = rdpsin * rday ; rdpsob = rdpsob * rday
163	inumfbc = 0
164	! ... look for Fixed Boundaries (rdp = 0 )
165	! ... When specified, lbcxxx flags are set to TRUE and rdpxxx are set to
166	! ... a small arbitrary value, (to avoid division by zero further on).
167	! ... rdpxxx is not used anymore.
168	IF( lp_obc_east ) THEN
169	IF( (rdpein+rdpeob) == 0 ) THEN
170	lfbceast = .TRUE. ; rdpein = 1e-3 ; rdpeob = 1e-3
171	inumfbc = inumfbc+1
172	ELSEIF ( (rdpein*rdpeob) == 0 ) THEN
173	CALL ctl_stop( 'obc_init : rn_dpein & rn_dpeob must be both zero or non zero' )
174	END IF
175	END IF
176
177	IF( lp_obc_west ) THEN
178	IF( (rdpwin + rdpwob) == 0 ) THEN
179	lfbcwest = .TRUE. ; rdpwin = 1e-3 ; rdpwob = 1e-3
180	inumfbc = inumfbc+1
181	ELSEIF ( (rdpwin*rdpwob) == 0 ) THEN
182	CALL ctl_stop( 'obc_init : rn_dpwin & rn_dpwob must be both zero or non zero' )
183	END IF
184	END IF
185	IF( lp_obc_north ) THEN
186	IF( (rdpnin + rdpnob) == 0 ) THEN
187	lfbcnorth = .TRUE. ; rdpnin = 1e-3 ; rdpnob = 1e-3
188	inumfbc = inumfbc+1
189	ELSEIF ( (rdpnin*rdpnob) == 0 ) THEN
190	CALL ctl_stop( 'obc_init : rn_dpnin & rn_dpnob must be both zero or non zero' )
191	END IF
192	END IF
193	IF( lp_obc_south ) THEN
194	IF( (rdpsin + rdpsob) == 0 ) THEN
195	lfbcsouth = .TRUE. ; rdpsin = 1e-3 ; rdpsob = 1e-3
196	inumfbc = inumfbc+1
197	ELSEIF ( (rdpsin*rdpsob) == 0 ) THEN
198	CALL ctl_stop( 'obc_init : rn_dpsin & rn_dpsob must be both zero or non zero' )
199	END IF
200	END IF
201
202	! 2. Clever mpp indices for loops on the open boundaries.
203	! The loops will be performed only on the processors
204	! that contain a given open boundary.
205	! --------------------------------------------------------
206
207	IF( lp_obc_east ) THEN
208	! ... mpp initialization
209	nie0 = max( 1, min(jpieob - nimpp+1, jpi ) )
210	nie1 = max( 0, min(jpieob - nimpp+1, jpi - 1 ) )
211	nie0p1 = max( 1, min(jpieob+1 - nimpp+1, jpi ) )
212	nie1p1 = max( 0, min(jpieob+1 - nimpp+1, jpi - 1 ) )
213	nie0m1 = max( 1, min(jpieob-1 - nimpp+1, jpi ) )
214	nie1m1 = max( 0, min(jpieob-1 - nimpp+1, jpi - 1 ) )
215	nje0 = max( 2, min(jpjed - njmpp+1, jpj ) )
216	nje1 = max( 0, min(jpjef - njmpp+1, jpj - 1 ) )
217	nje0p1 = max( 1, min(jpjedp1 - njmpp+1, jpj ) )
218	nje0m1 = max( 1, min(jpjed - njmpp+1, jpj ) )
219	nje1m1 = max( 0, min(jpjefm1 - njmpp+1, jpj - 1 ) )
220	nje1m2 = max( 0, min(jpjefm1-1- njmpp+1, jpj - 1 ) )
221	IF(lwp) THEN
222	IF( lfbceast ) THEN
223	WRITE(numout,*)' '
224	WRITE(numout,*)' Specified East Open Boundary'
225	ELSE
226	WRITE(numout,*)' '
227	WRITE(numout,*)' Radiative East Open Boundary'
228	END IF
229	END IF
230	END IF
231
232	IF( lp_obc_west ) THEN
233	! ... mpp initialization
234	niw0 = max( 1, min(jpiwob - nimpp+1, jpi ) )
235	niw1 = max( 0, min(jpiwob - nimpp+1, jpi - 1 ) )
236	niw0p1 = max( 1, min(jpiwob+1 - nimpp+1, jpi ) )
237	niw1p1 = max( 0, min(jpiwob+1 - nimpp+1, jpi - 1 ) )
238	njw0 = max( 2, min(jpjwd - njmpp+1, jpj ) )
239	njw1 = max( 0, min(jpjwf - njmpp+1, jpj - 1 ) )
240	njw0p1 = max( 1, min(jpjwdp1 - njmpp+1, jpj ) )
241	njw0m1 = max( 1, min(jpjwd - njmpp+1, jpj ) )
242	njw1m1 = max( 0, min(jpjwfm1 - njmpp+1, jpj - 1 ) )
243	njw1m2 = max( 0, min(jpjwfm1-1- njmpp+1, jpj - 1 ) )
244	IF(lwp) THEN
245	IF( lfbcwest ) THEN
246	WRITE(numout,*)' '
247	WRITE(numout,*)' Specified West Open Boundary'
248	ELSE
249	WRITE(numout,*)' '
250	WRITE(numout,*)' Radiative West Open Boundary'
251	END IF
252	END IF
253	END IF
254
255	IF( lp_obc_north ) THEN
256	! ... mpp initialization
257	nin0 = max( 2, min(jpind - nimpp+1, jpi ) )
258	nin1 = max( 0, min(jpinf - nimpp+1, jpi - 1 ) )
259	nin0p1 = max( 1, min(jpindp1 - nimpp+1, jpi ) )
260	nin0m1 = max( 1, min(jpind - nimpp+1, jpi ) )
261	nin1m1 = max( 0, min(jpinfm1 - nimpp+1, jpi - 1 ) )
262	nin1m2 = max( 0, min(jpinfm1-1- nimpp+1, jpi - 1 ) )
263	njn0 = max( 1, min(jpjnob - njmpp+1, jpj ) )
264	njn1 = max( 0, min(jpjnob - njmpp+1, jpj - 1 ) )
265	njn0p1 = max( 1, min(jpjnob+1 - njmpp+1, jpj ) )
266	njn1p1 = max( 0, min(jpjnob+1 - njmpp+1, jpj - 1 ) )
267	njn0m1 = max( 1, min(jpjnob-1 - njmpp+1, jpj ) )
268	njn1m1 = max( 0, min(jpjnob-1 - njmpp+1, jpj - 1 ) )
269	IF(lwp) THEN
270	IF( lfbcnorth ) THEN
271	WRITE(numout,*)' '
272	WRITE(numout,*)' Specified North Open Boundary'
273	ELSE
274	WRITE(numout,*)' '
275	WRITE(numout,*)' Radiative North Open Boundary'
276	END IF
277	END IF
278	END IF
279
280	IF( lp_obc_south ) THEN
281	! ... mpp initialization
282	nis0 = max( 2, min(jpisd - nimpp+1, jpi ) )
283	nis1 = max( 0, min(jpisf - nimpp+1, jpi - 1 ) )
284	nis0p1 = max( 1, min(jpisdp1 - nimpp+1, jpi ) )
285	nis0m1 = max( 1, min(jpisd - nimpp+1, jpi ) )
286	nis1m1 = max( 0, min(jpisfm1 - nimpp+1, jpi - 1 ) )
287	nis1m2 = max( 0, min(jpisfm1-1- nimpp+1, jpi - 1 ) )
288	njs0 = max( 1, min(jpjsob - njmpp+1, jpj ) )
289	njs1 = max( 0, min(jpjsob - njmpp+1, jpj - 1 ) )
290	njs0p1 = max( 1, min(jpjsob+1 - njmpp+1, jpj ) )
291	njs1p1 = max( 0, min(jpjsob+1 - njmpp+1, jpj - 1 ) )
292	IF(lwp) THEN
293	IF( lfbcsouth ) THEN
294	WRITE(numout,*)' '
295	WRITE(numout,*)' Specified South Open Boundary'
296	ELSE
297	WRITE(numout,*)' '
298	WRITE(numout,*)' Radiative South Open Boundary'
299	END IF
300	END IF
301	END IF
302
303	! 3. mask correction for OBCs
304	! ---------------------------
305
306	IF( lp_obc_east ) THEN
307	!... (jpjed,jpjefm1),jpieob
308	bmask(nie0p1:nie1p1,nje0:nje1m1) = 0.e0
309
310	! ... initilization to zero
311	uemsk(:,:) = 0.e0 ; vemsk(:,:) = 0.e0 ; temsk(:,:) = 0.e0
312
313	! ... set 2D mask on East OBC, Vopt
314	DO ji = fs_nie0, fs_nie1
315	DO jj = nje0, nje1
316	uemsk(jj,:) = umask(ji, jj,:) * tmask_i(ji,jj) * tmask_i(ji+1,jj)
317	vemsk(jj,:) = vmask(ji+1,jj,:) * tmask_i(ji+1,jj)
318	temsk(jj,:) = tmask(ji+1,jj,:) * tmask_i(ji+1,jj)
319	END DO
320	END DO
321
322	END IF
323
324	IF( lp_obc_west ) THEN
325	! ... (jpjwd,jpjwfm1),jpiwob
326	bmask(niw0:niw1,njw0:njw1m1) = 0.e0
327
328	! ... initilization to zero
329	uwmsk(:,:) = 0.e0 ; vwmsk(:,:) = 0.e0 ; twmsk(:,:) = 0.e0
330
331	! ... set 2D mask on West OBC, Vopt
332	DO ji = fs_niw0, fs_niw1
333	DO jj = njw0, njw1
334	uwmsk(jj,:) = umask(ji,jj,:) * tmask_i(ji,jj) * tmask_i(ji+1,jj)
335	vwmsk(jj,:) = vmask(ji,jj,:) * tmask_i(ji,jj)
336	twmsk(jj,:) = tmask(ji,jj,:) * tmask_i(ji,jj)
337	END DO
338	END DO
339
340	END IF
341
342	IF( lp_obc_north ) THEN
343	! ... jpjnob,(jpind,jpisfm1)
344	bmask(nin0:nin1m1,njn0p1:njn1p1) = 0.e0
345
346	! ... initilization to zero
347	unmsk(:,:) = 0.e0 ; vnmsk(:,:) = 0.e0 ; tnmsk(:,:) = 0.e0
348
349	! ... set 2D mask on North OBC, Vopt
350	DO jj = fs_njn0, fs_njn1
351	DO ji = nin0, nin1
352	unmsk(ji,:) = umask(ji,jj+1,:) * tmask_i(ji,jj+1)
353	vnmsk(ji,:) = vmask(ji,jj ,:) * tmask_i(ji,jj) * tmask_i(ji,jj+1)
354	tnmsk(ji,:) = tmask(ji,jj+1,:) * tmask_i(ji,jj+1)
355	END DO
356	END DO
357
358	END IF
359
360	IF( lp_obc_south ) THEN
361	! ... jpjsob,(jpisd,jpisfm1)
362	bmask(nis0:nis1m1,njs0:njs1) = 0.e0
363
364	! ... initilization to zero
365	usmsk(:,:) = 0.e0 ; vsmsk(:,:) = 0.e0 ; tsmsk(:,:) = 0.e0
366
367	! ... set 2D mask on South OBC, Vopt
368	DO jj = fs_njs0, fs_njs1
369	DO ji = nis0, nis1
370	usmsk(ji,:) = umask(ji,jj,:) * tmask_i(ji,jj)
371	vsmsk(ji,:) = vmask(ji,jj,:) * tmask_i(ji,jj) * tmask_i(ji,jj+1)
372	tsmsk(ji,:) = tmask(ji,jj,:) * tmask_i(ji,jj)
373	END DO
374	END DO
375
376	END IF
377
378	! ... Initialize obcumask and obcvmask for the Force filtering
379	! boundary condition in dynspg_flt
380	obcumask(:,:) = umask(:,:,1)
381	obcvmask(:,:) = vmask(:,:,1)
382
383	! ... Initialize obctmsk on overlap region and obcs. This mask
384	! is used in obcvol.F90 to calculate cumulate flux E-P.
385	! obc Tracer point are outside the domain ( U/V obc points) ==> masked by obctmsk
386	! - no flux E-P on obcs and overlap region (jpreci = jprecj = 1)
387	obctmsk(:,:) = tmask_i(:,:)
388
389	IF( lp_obc_east ) THEN
390	! ... East obc Force filtering mask for the grad D
391	obcumask(nie0 :nie1 ,nje0p1:nje1m1) = 0.e0
392	obcvmask(nie0p1:nie1p1,nje0p1:nje1m1) = 0.e0
393	! ... set to 0 on East OBC
394	obctmsk(nie0p1:nie1p1,nje0:nje1) = 0.e0
395	END IF
396
397	IF( lp_obc_west ) THEN
398	! ... West obc Force filtering mask for the grad D
399	obcumask(niw0:niw1,njw0:njw1) = 0.e0
400	obcvmask(niw0:niw1,njw0:njw1) = 0.e0
401	! ... set to 0 on West OBC
402	obctmsk(niw0:niw1,njw0:njw1) = 0.e0
403	END IF
404
405	IF( lp_obc_north ) THEN
406	! ... North obc Force filtering mask for the grad D
407	obcumask(nin0p1:nin1m1,njn0p1:njn1p1) = 0.e0
408	obcvmask(nin0p1:nin1m1,njn0 :njn1 ) = 0.e0
409	! ... set to 0 on North OBC
410	obctmsk(nin0:nin1,njn0p1:njn1p1) = 0.e0
411	END IF
412
413	IF( lp_obc_south ) THEN
414	! ... South obc Force filtering mask for the grad D
415	obcumask(nis0p1:nis1m1,njs0:njs1) = 0.e0
416	obcvmask(nis0p1:nis1m1,njs0:njs1) = 0.e0
417	! ... set to 0 on South OBC
418	obctmsk(nis0:nis1,njs0:njs1) = 0.e0
419	END IF
420
421	! 3.1 Total lateral surface
422	! -------------------------
423	obcsurftot = 0.e0
424
425	IF( lp_obc_east ) THEN ! ... East open boundary lateral surface
426	DO ji = nie0, nie1
427	DO jj = 1, jpj
428	obcsurftot = obcsurftot+hu(ji,jj)e2u(ji,jj)uemsk(jj,1) * MAX(obctmsk(ji,jj),obctmsk(ji+1,jj) )
429	END DO
430	END DO
431	END IF
432	IF( lp_obc_west ) THEN ! ... West open boundary lateral surface
433	DO ji = niw0, niw1
434	DO jj = 1, jpj
435	obcsurftot = obcsurftot+hu(ji,jj)e2u(ji,jj)uwmsk(jj,1) * MAX(obctmsk(ji,jj),obctmsk(ji+1,jj) )
436	END DO
437	END DO
438	END IF
439	IF( lp_obc_north ) THEN ! ... North open boundary lateral surface
440	DO jj = njn0, njn1
441	DO ji = 1, jpi
442	obcsurftot = obcsurftot+hv(ji,jj)e1v(ji,jj)vnmsk(ji,1) * MAX(obctmsk(ji,jj),obctmsk(ji,jj+1) )
443	END DO
444	END DO
445	END IF
446
447	IF( lp_obc_south ) THEN ! ... South open boundary lateral surface
448	DO jj = njs0, njs1
449	DO ji = 1, jpi
450	obcsurftot = obcsurftot+hv(ji,jj)e1v(ji,jj)vsmsk(ji,1) * MAX(obctmsk(ji,jj),obctmsk(ji,jj+1) )
451	END DO
452	END DO
453	END IF
454
455	IF( lk_mpp ) CALL mpp_sum( obcsurftot ) ! sum over the global domain
456
457	! 5. Control print on mask
458	! The extremities of the open boundaries must be in land
459	! or else correspond to an "ocean corner" between two open boundaries.
460	! corner 1 is southwest, 2 is south east, 3 is northeast, 4 is northwest.
461	! --------------------------------------------------------------------------
462
463	icorner(:)=0
464
465	! ... control of the west boundary
466	IF( lp_obc_west ) THEN
467	IF( jpiwob < 2 .OR. jpiwob >= jpiglo-2 ) THEN
468	WRITE(ctmp1,*) ' jpiwob exceed ', jpiglo-2, 'or less than 2'
469	CALL ctl_stop( ctmp1 )
470	END IF
471	ztestmask(:)=0.
472	DO ji=niw0,niw1
473	IF( (njw0 + njmpp - 1) == jpjwd ) ztestmask(1)=ztestmask(1)+ tmask(ji,njw0,1)
474	IF( (njw1 + njmpp - 1) == jpjwf ) ztestmask(2)=ztestmask(2)+ tmask(ji,njw1,1)
475	END DO
476	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
477
478	IF( ztestmask(1) /= 0. ) icorner(1)=icorner(1)+1
479	IF( ztestmask(2) /= 0. ) icorner(4)=icorner(4)+1
480	END IF
481
482	! ... control of the east boundary
483	IF( lp_obc_east ) THEN
484	IF( jpieob < 4 .OR. jpieob >= jpiglo ) THEN
485	WRITE(ctmp1,*) ' jpieob exceed ', jpiglo, ' or less than 4'
486	CALL ctl_stop( ctmp1 )
487	END IF
488	ztestmask(:)=0.
489	DO ji=nie0p1,nie1p1
490	IF( (nje0 + njmpp - 1) == jpjed ) ztestmask(1)=ztestmask(1)+ tmask(ji,nje0,1)
491	IF( (nje1 + njmpp - 1) == jpjef ) ztestmask(2)=ztestmask(2)+ tmask(ji,nje1,1)
492	END DO
493	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
494
495	IF( ztestmask(1) /= 0. ) icorner(2)=icorner(2)+1
496	IF( ztestmask(2) /= 0. ) icorner(3)=icorner(3)+1
497	END IF
498
499	! ... control of the north boundary
500	IF( lp_obc_north ) THEN
501	IF( jpjnob < 4 .OR. jpjnob >= jpjglo ) THEN
502	WRITE(ctmp1,*) 'jpjnob exceed ', jpjglo, ' or less than 4'
503	CALL ctl_stop( ctmp1 )
504	END IF
505	ztestmask(:)=0.
506	DO jj=njn0p1,njn1p1
507	IF( (nin0 + nimpp - 1) == jpind ) ztestmask(1)=ztestmask(1)+ tmask(nin0,jj,1)
508	IF( (nin1 + nimpp - 1) == jpinf ) ztestmask(2)=ztestmask(2)+ tmask(nin1,jj,1)
509	END DO
510	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
511
512	IF( ztestmask(1) /= 0. ) icorner(4)=icorner(4)+1
513	IF( ztestmask(2) /= 0. ) icorner(3)=icorner(3)+1
514	END IF
515
516	! ... control of the south boundary
517	IF( lp_obc_south ) THEN
518	IF( jpjsob < 2 .OR. jpjsob >= jpjglo-2 ) THEN
519	WRITE(ctmp1,*) ' jpjsob exceed ', jpjglo-2, ' or less than 2'
520	CALL ctl_stop( ctmp1 )
521	END IF
522	ztestmask(:)=0.
523	DO jj=njs0,njs1
524	IF( (nis0 + nimpp - 1) == jpisd ) ztestmask(1)=ztestmask(1)+ tmask(nis0,jj,1)
525	IF( (nis1 + nimpp - 1) == jpisf ) ztestmask(2)=ztestmask(2)+ tmask(nis1,jj,1)
526	END DO
527	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
528
529	IF( ztestmask(1) /= 0. ) icorner(1)=icorner(1)+1
530	IF( ztestmask(2) /= 0. ) icorner(2)=icorner(2)+1
531	END IF
532
533	IF( icorner(1) == 2 ) THEN
534	IF(lwp) WRITE(numout,*)
535	IF(lwp) WRITE(numout,*) ' South West ocean corner, two open boudaries'
536	IF(lwp) WRITE(numout,*) ' ========== '
537	IF(lwp) WRITE(numout,*)
538	IF( jpisd /= jpiwob.OR.jpjsob /= jpjwd ) &
539	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
540
541	ELSE IF( icorner(1) == 1 ) THEN
542	CALL ctl_stop( ' Open boundaries do not fit at SW corner, we stop' )
543	END IF
544
545	IF( icorner(2) == 2 ) THEN
546	IF(lwp) WRITE(numout,*)
547	IF(lwp) WRITE(numout,*) ' South East ocean corner, two open boudaries'
548	IF(lwp) WRITE(numout,*) ' ========== '
549	IF(lwp) WRITE(numout,*)
550	IF( jpisf /= jpieob+1.OR.jpjsob /= jpjed ) &
551	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
552	ELSE IF( icorner(2) == 1 ) THEN
553	CALL ctl_stop( ' Open boundaries do not fit at SE corner, we stop' )
554	END IF
555
556	IF( icorner(3) == 2 ) THEN
557	IF(lwp) WRITE(numout,*)
558	IF(lwp) WRITE(numout,*) ' North East ocean corner, two open boudaries'
559	IF(lwp) WRITE(numout,*) ' ========== '
560	IF(lwp) WRITE(numout,*)
561	IF( jpinf /= jpieob+1 .OR. jpjnob+1 /= jpjef ) &
562	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
563	ELSE IF( icorner(3) == 1 ) THEN
564	CALL ctl_stop( ' Open boundaries do not fit at NE corner, we stop' )
565	END IF
566
567	IF( icorner(4) == 2 ) THEN
568	IF(lwp) WRITE(numout,*)
569	IF(lwp) WRITE(numout,*) ' North West ocean corner, two open boudaries'
570	IF(lwp) WRITE(numout,*) ' ========== '
571	IF(lwp) WRITE(numout,*)
572	IF( jpind /= jpiwob.OR.jpjnob+1 /= jpjwf ) &
573	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
574	ELSE IF( icorner(4) == 1 ) THEN
575	CALL ctl_stop( ' Open boundaries do not fit at NW corner, we stop' )
576	END IF
577
578	! 6. Initialization of open boundary variables (u, v, t, s)
579	! --------------------------------------------------------------
580	! only if at least one boundary is radiative
581	IF ( inumfbc < nbobc .AND. ln_rstart ) THEN
582	! Restart from restart.obc
583	CALL obc_rst_read
584	ELSE
585
586	! ! ... Initialization to zero of radiation arrays.
587	! ! Those have dimensions of local subdomains
588
589	uebnd(:,:,:,:) = 0.e0 ; unbnd(:,:,:,:) = 0.e0
590	vebnd(:,:,:,:) = 0.e0 ; vnbnd(:,:,:,:) = 0.e0
591	tebnd(:,:,:,:) = 0.e0 ; tnbnd(:,:,:,:) = 0.e0
592	sebnd(:,:,:,:) = 0.e0 ; snbnd(:,:,:,:) = 0.e0
593
594	uwbnd(:,:,:,:) = 0.e0 ; usbnd(:,:,:,:) = 0.e0
595	vwbnd(:,:,:,:) = 0.e0 ; vsbnd(:,:,:,:) = 0.e0
596	twbnd(:,:,:,:) = 0.e0 ; tsbnd(:,:,:,:) = 0.e0
597	swbnd(:,:,:,:) = 0.e0 ; ssbnd(:,:,:,:) = 0.e0
598
599	END IF
600
601	! 7. Control print
602	! -----------------------------------------------------------------
603
604	! ... control of the east boundary
605	IF( lp_obc_east ) THEN
606	istop = 0
607	IF( jpieob < 4 .OR. jpieob >= jpiglo ) THEN
608	IF(lwp) WRITE(numout,cform_err)
609	IF(lwp) WRITE(numout,*) ' jpieob exceed ', jpim1, ' or less than 4'
610	istop = istop + 1
611	END IF
612
613	IF( lk_mpp ) THEN
614	! ...
615	IF( nimpp > jpieob-5) THEN
616	IF(lwp) WRITE(numout,cform_err)
617	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the East OBC'
618	IF(lwp) WRITE(numout,*) ' nimpp must be < jpieob-5'
619	istop = istop + 1
620	ENDIF
621	ELSE
622
623	! ... stop if e r r o r (s) detected
624	IF( istop /= 0 ) THEN
625	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
626	CALL ctl_stop( ctmp1 )
627	ENDIF
628	ENDIF
629	ENDIF
630
631	! ... control of the west boundary
632	IF( lp_obc_west ) THEN
633	istop = 0
634	IF( jpiwob < 2 .OR. jpiwob >= jpiglo ) THEN
635	IF(lwp) WRITE(numout,cform_err)
636	IF(lwp) WRITE(numout,*) ' jpiwob exceed ', jpim1, ' or less than 2'
637	istop = istop + 1
638	END IF
639
640	IF( lk_mpp ) THEN
641	IF( (nimpp < jpiwob+5) .AND. (nimpp > 1) ) THEN
642	IF(lwp) WRITE(numout,cform_err)
643	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the West OBC'
644	IF(lwp) WRITE(numout,*) ' nimpp must be > jpiwob-5 or =1'
645	istop = istop + 1
646	ENDIF
647	ELSE
648
649	! ... stop if e r r o r (s) detected
650	IF( istop /= 0 ) THEN
651	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
652	CALL ctl_stop( ctmp1 )
653	ENDIF
654	ENDIF
655	ENDIF
656
657	! control of the north boundary
658	IF( lp_obc_north ) THEN
659	istop = 0
660	IF( jpjnob < 4 .OR. jpjnob >= jpjglo ) THEN
661	IF(lwp) WRITE(numout,cform_err)
662	IF(lwp) WRITE(numout,*) ' jpjnob exceed ', jpjm1,' or less than 4'
663	istop = istop + 1
664	END IF
665
666	IF( lk_mpp ) THEN
667	IF( njmpp > jpjnob-5) THEN
668	IF(lwp) WRITE(numout,cform_err)
669	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the North OBC'
670	IF(lwp) WRITE(numout,*) ' njmpp must be < jpjnob-5'
671	istop = istop + 1
672	ENDIF
673	ELSE
674
675	! ... stop if e r r o r (s) detected
676	IF( istop /= 0 ) THEN
677	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
678	CALL ctl_stop( ctmp1 )
679	ENDIF
680	ENDIF
681	ENDIF
682
683	! control of the south boundary
684	IF( lp_obc_south ) THEN
685	istop = 0
686	IF( jpjsob < 2 .OR. jpjsob >= jpjglo ) THEN
687	IF(lwp) WRITE(numout,cform_err)
688	IF(lwp) WRITE(numout,*) ' jpjsob exceed ', jpjm1,' or less than 2'
689	istop = istop + 1
690	END IF
691
692	IF( lk_mpp ) THEN
693	IF( (njmpp < jpjsob+5) .AND. (njmpp > 1) ) THEN
694	IF(lwp) WRITE(numout,cform_err)
695	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the South OBC'
696	IF(lwp) WRITE(numout,*) ' njmpp must be > jpjsob+5 or =1'
697	istop = istop + 1
698	ENDIF
699	ELSE
700
701	! ... stop if e r r o r (s) detected
702	IF( istop /= 0 ) THEN
703	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
704	CALL ctl_stop( ctmp1 )
705	ENDIF
706	ENDIF
707	ENDIF
708
709	END SUBROUTINE obc_init
710
711	#else
712	!!---------------------------------------------------------------------------------
713	!! Dummy module NO open boundaries
714	!!---------------------------------------------------------------------------------
715	CONTAINS
716	SUBROUTINE obc_init ! Dummy routine
717	END SUBROUTINE obc_init
718	#endif
719
720	!!=================================================================================
721	END MODULE obcini

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