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obcini.F90 in trunk/NEMOGCM/NEMO/OPA_SRC/OBC – NEMO

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source: trunk/NEMOGCM/NEMO/OPA_SRC/OBC/obcini.F90 @ 2565

Last change on this file since 2565 was 2565, checked in by rblod, 13 years ago
Suppress duplicated code in obcini, see ticket #788
Property svn:keywords set to `Id`
File size: 29.7 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 3.3 , NEMO Consortium (2010)
34	!! $Id$
35	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_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	nobc_dta = nn_obcdta
73	cffile = cn_obcdta
74	rdpein = rn_dpein
75	rdpwin = rn_dpwin
76	rdpsin = rn_dpsin
77	rdpnin = rn_dpnin
78	rdpeob = rn_dpeob
79	rdpwob = rn_dpwob
80	rdpsob = rn_dpsob
81	rdpnob = rn_dpnob
82	volemp = rn_volemp
83
84
85
86	! By security we set rdpxin and rdpxob respectively to 1. and 15. if the corresponding OBC is not activated
87	IF( .NOT.lp_obc_east ) THEN ; rdpein = 1. ; rdpeob = 15. ; END IF
88	IF( .NOT.lp_obc_west ) THEN ; rdpwin = 1. ; rdpwob = 15. ; END IF
89	IF( .NOT.lp_obc_north ) THEN ; rdpnin = 1. ; rdpnob = 15. ; END IF
90	IF( .NOT.lp_obc_south ) THEN ; rdpsin = 1. ; rdpsob = 15. ; END IF
91
92	! number of open boudaries and open boundary indicators
93	nbobc = 0
94	IF( lp_obc_east ) nbobc = nbobc + 1
95	IF( lp_obc_west ) nbobc = nbobc + 1
96	IF( lp_obc_north ) nbobc = nbobc + 1
97	IF( lp_obc_south ) nbobc = nbobc + 1
98
99	IF(lwp) WRITE(numout,*)
100	IF(lwp) WRITE(numout,*) 'obc_init : initialization of open boundaries'
101	IF(lwp) WRITE(numout,*) '~~~~~~~~'
102	IF(lwp) WRITE(numout,*) ' Number of open boundaries nbobc = ', nbobc
103	IF(lwp) WRITE(numout,*)
104
105	! control prints
106	IF(lwp) WRITE(numout,*) ' Namelist namobc'
107	IF(lwp) WRITE(numout,*) ' data in file (=1) or initial state used (=0) nn_obcdta = ', nn_obcdta
108	IF(lwp) WRITE(numout,*) ' climatology (true) or not ln_obc_clim = ', ln_obc_clim
109	IF(lwp) WRITE(numout,*) ' vol_cst (true) or not: ln_vol_cst = ', ln_vol_cst
110	IF(lwp) WRITE(numout,*) ' '
111	IF(lwp) WRITE(numout,*) ' WARNING '
112	IF(lwp) WRITE(numout,*) ' Flather"s algorithm is applied with explicit free surface scheme '
113	IF(lwp) WRITE(numout,*) ' or with free surface time-splitting scheme '
114	IF(lwp) WRITE(numout,*) ' Nor radiation neither relaxation is allowed with explicit free surface scheme: '
115	IF(lwp) WRITE(numout,*) ' Radiation and/or relaxation is allowed with free surface time-splitting scheme '
116	IF(lwp) WRITE(numout,*) ' depending of the choice of rdpXin = rdpXob = 0. for open boundaries '
117	IF(lwp) WRITE(numout,*)
118	IF(lwp) WRITE(numout,*) ' For the filtered free surface case, '
119	IF(lwp) WRITE(numout,*) ' radiation, relaxation or presciption of data can be applied '
120	IF(lwp) WRITE(numout,*)
121
122	IF( lwp.AND.lp_obc_east ) THEN
123	WRITE(numout,*) ' East open boundary :'
124	WRITE(numout,*) ' i index jpieob = ', jpieob
125	WRITE(numout,*) ' damping time scale (days) rn_dpeob = ', rn_dpeob
126	WRITE(numout,*) ' damping time scale (days) rn_dpein = ', rn_dpein
127	ENDIF
128
129	IF( lwp.AND.lp_obc_west ) THEN
130	WRITE(numout,*) ' West open boundary :'
131	WRITE(numout,*) ' i index jpiwob = ', jpiwob
132	WRITE(numout,*) ' damping time scale (days) rn_dpwob = ', rn_dpwob
133	WRITE(numout,*) ' damping time scale (days) rn_dpwin = ', rn_dpwin
134	ENDIF
135
136	IF( lwp.AND.lp_obc_north ) THEN
137	WRITE(numout,*) ' North open boundary :'
138	WRITE(numout,*) ' j index jpjnob = ', jpjnob
139	WRITE(numout,*) ' damping time scale (days) rn_dpnob = ', rn_dpnob
140	WRITE(numout,*) ' damping time scale (days) rn_dpnin = ', rn_dpnin
141	ENDIF
142
143	IF( lwp.AND.lp_obc_south ) THEN
144	WRITE(numout,*) ' South open boundary :'
145	WRITE(numout,*) ' j index jpjsob = ', jpjsob
146	WRITE(numout,*) ' damping time scale (days) rn_dpsob = ', rn_dpsob
147	WRITE(numout,*) ' damping time scale (days) rn_dpsin = ', rn_dpsin
148	WRITE(numout,*)
149	ENDIF
150
151	IF( nbobc >= 2 .AND. jperio /= 0 ) &
152	& CALL ctl_stop( ' Cyclic or symmetric, and open boundary condition are not compatible' )
153
154	! 1. Initialisation of constants
155	! ------------------------------
156	! ... convert rdp$ob in seconds
157	! Fixed Bdy flag inbound outbound
158	lfbceast = .FALSE. ; rdpein = rdpein * rday ; rdpeob = rdpeob * rday
159	lfbcwest = .FALSE. ; rdpwin = rdpwin * rday ; rdpwob = rdpwob * rday
160	lfbcnorth = .FALSE. ; rdpnin = rdpnin * rday ; rdpnob = rdpnob * rday
161	lfbcsouth = .FALSE. ; rdpsin = rdpsin * rday ; rdpsob = rdpsob * rday
162	inumfbc = 0
163	! ... look for Fixed Boundaries (rdp = 0 )
164	! ... When specified, lbcxxx flags are set to TRUE and rdpxxx are set to
165	! ... a small arbitrary value, (to avoid division by zero further on).
166	! ... rdpxxx is not used anymore.
167	IF( lp_obc_east ) THEN
168	IF( (rdpein+rdpeob) == 0 ) THEN
169	lfbceast = .TRUE. ; rdpein = 1e-3 ; rdpeob = 1e-3
170	inumfbc = inumfbc+1
171	ELSEIF ( (rdpein*rdpeob) == 0 ) THEN
172	CALL ctl_stop( 'obc_init : rn_dpein & rn_dpeob must be both zero or non zero' )
173	END IF
174	END IF
175
176	IF( lp_obc_west ) THEN
177	IF( (rdpwin + rdpwob) == 0 ) THEN
178	lfbcwest = .TRUE. ; rdpwin = 1e-3 ; rdpwob = 1e-3
179	inumfbc = inumfbc+1
180	ELSEIF ( (rdpwin*rdpwob) == 0 ) THEN
181	CALL ctl_stop( 'obc_init : rn_dpwin & rn_dpwob must be both zero or non zero' )
182	END IF
183	END IF
184	IF( lp_obc_north ) THEN
185	IF( (rdpnin + rdpnob) == 0 ) THEN
186	lfbcnorth = .TRUE. ; rdpnin = 1e-3 ; rdpnob = 1e-3
187	inumfbc = inumfbc+1
188	ELSEIF ( (rdpnin*rdpnob) == 0 ) THEN
189	CALL ctl_stop( 'obc_init : rn_dpnin & rn_dpnob must be both zero or non zero' )
190	END IF
191	END IF
192	IF( lp_obc_south ) THEN
193	IF( (rdpsin + rdpsob) == 0 ) THEN
194	lfbcsouth = .TRUE. ; rdpsin = 1e-3 ; rdpsob = 1e-3
195	inumfbc = inumfbc+1
196	ELSEIF ( (rdpsin*rdpsob) == 0 ) THEN
197	CALL ctl_stop( 'obc_init : rn_dpsin & rn_dpsob must be both zero or non zero' )
198	END IF
199	END IF
200
201	! 2. Clever mpp indices for loops on the open boundaries.
202	! The loops will be performed only on the processors
203	! that contain a given open boundary.
204	! --------------------------------------------------------
205
206	IF( lp_obc_east ) THEN
207	! ... mpp initialization
208	nie0 = max( 1, min(jpieob - nimpp+1, jpi ) )
209	nie1 = max( 0, min(jpieob - nimpp+1, jpi - 1 ) )
210	nie0p1 = max( 1, min(jpieob+1 - nimpp+1, jpi ) )
211	nie1p1 = max( 0, min(jpieob+1 - nimpp+1, jpi - 1 ) )
212	nie0m1 = max( 1, min(jpieob-1 - nimpp+1, jpi ) )
213	nie1m1 = max( 0, min(jpieob-1 - nimpp+1, jpi - 1 ) )
214	nje0 = max( 2, min(jpjed - njmpp+1, jpj ) )
215	nje1 = max( 0, min(jpjef - njmpp+1, jpj - 1 ) )
216	nje0p1 = max( 1, min(jpjedp1 - njmpp+1, jpj ) )
217	nje0m1 = max( 1, min(jpjed - njmpp+1, jpj ) )
218	nje1m1 = max( 0, min(jpjefm1 - njmpp+1, jpj - 1 ) )
219	nje1m2 = max( 0, min(jpjefm1-1- njmpp+1, jpj - 1 ) )
220	IF(lwp) THEN
221	IF( lfbceast ) THEN
222	WRITE(numout,*)' '
223	WRITE(numout,*)' Specified East Open Boundary'
224	ELSE
225	WRITE(numout,*)' '
226	WRITE(numout,*)' Radiative East Open Boundary'
227	END IF
228	END IF
229	END IF
230
231	IF( lp_obc_west ) THEN
232	! ... mpp initialization
233	niw0 = max( 1, min(jpiwob - nimpp+1, jpi ) )
234	niw1 = max( 0, min(jpiwob - nimpp+1, jpi - 1 ) )
235	niw0p1 = max( 1, min(jpiwob+1 - nimpp+1, jpi ) )
236	niw1p1 = max( 0, min(jpiwob+1 - nimpp+1, jpi - 1 ) )
237	njw0 = max( 2, min(jpjwd - njmpp+1, jpj ) )
238	njw1 = max( 0, min(jpjwf - njmpp+1, jpj - 1 ) )
239	njw0p1 = max( 1, min(jpjwdp1 - njmpp+1, jpj ) )
240	njw0m1 = max( 1, min(jpjwd - njmpp+1, jpj ) )
241	njw1m1 = max( 0, min(jpjwfm1 - njmpp+1, jpj - 1 ) )
242	njw1m2 = max( 0, min(jpjwfm1-1- njmpp+1, jpj - 1 ) )
243	IF(lwp) THEN
244	IF( lfbcwest ) THEN
245	WRITE(numout,*)' '
246	WRITE(numout,*)' Specified West Open Boundary'
247	ELSE
248	WRITE(numout,*)' '
249	WRITE(numout,*)' Radiative West Open Boundary'
250	END IF
251	END IF
252	END IF
253
254	IF( lp_obc_north ) THEN
255	! ... mpp initialization
256	nin0 = max( 2, min(jpind - nimpp+1, jpi ) )
257	nin1 = max( 0, min(jpinf - nimpp+1, jpi - 1 ) )
258	nin0p1 = max( 1, min(jpindp1 - nimpp+1, jpi ) )
259	nin0m1 = max( 1, min(jpind - nimpp+1, jpi ) )
260	nin1m1 = max( 0, min(jpinfm1 - nimpp+1, jpi - 1 ) )
261	nin1m2 = max( 0, min(jpinfm1-1- nimpp+1, jpi - 1 ) )
262	njn0 = max( 1, min(jpjnob - njmpp+1, jpj ) )
263	njn1 = max( 0, min(jpjnob - njmpp+1, jpj - 1 ) )
264	njn0p1 = max( 1, min(jpjnob+1 - njmpp+1, jpj ) )
265	njn1p1 = max( 0, min(jpjnob+1 - njmpp+1, jpj - 1 ) )
266	njn0m1 = max( 1, min(jpjnob-1 - njmpp+1, jpj ) )
267	njn1m1 = max( 0, min(jpjnob-1 - njmpp+1, jpj - 1 ) )
268	IF(lwp) THEN
269	IF( lfbcnorth ) THEN
270	WRITE(numout,*)' '
271	WRITE(numout,*)' Specified North Open Boundary'
272	ELSE
273	WRITE(numout,*)' '
274	WRITE(numout,*)' Radiative North Open Boundary'
275	END IF
276	END IF
277	END IF
278
279	IF( lp_obc_south ) THEN
280	! ... mpp initialization
281	nis0 = max( 2, min(jpisd - nimpp+1, jpi ) )
282	nis1 = max( 0, min(jpisf - nimpp+1, jpi - 1 ) )
283	nis0p1 = max( 1, min(jpisdp1 - nimpp+1, jpi ) )
284	nis0m1 = max( 1, min(jpisd - nimpp+1, jpi ) )
285	nis1m1 = max( 0, min(jpisfm1 - nimpp+1, jpi - 1 ) )
286	nis1m2 = max( 0, min(jpisfm1-1- nimpp+1, jpi - 1 ) )
287	njs0 = max( 1, min(jpjsob - njmpp+1, jpj ) )
288	njs1 = max( 0, min(jpjsob - njmpp+1, jpj - 1 ) )
289	njs0p1 = max( 1, min(jpjsob+1 - njmpp+1, jpj ) )
290	njs1p1 = max( 0, min(jpjsob+1 - njmpp+1, jpj - 1 ) )
291	IF(lwp) THEN
292	IF( lfbcsouth ) THEN
293	WRITE(numout,*)' '
294	WRITE(numout,*)' Specified South Open Boundary'
295	ELSE
296	WRITE(numout,*)' '
297	WRITE(numout,*)' Radiative South Open Boundary'
298	END IF
299	END IF
300	END IF
301
302	! 3. mask correction for OBCs
303	! ---------------------------
304
305	IF( lp_obc_east ) THEN
306	!... (jpjed,jpjefm1),jpieob
307	bmask(nie0p1:nie1p1,nje0:nje1m1) = 0.e0
308
309	! ... initilization to zero
310	uemsk(:,:) = 0.e0 ; vemsk(:,:) = 0.e0 ; temsk(:,:) = 0.e0
311
312	! ... set 2D mask on East OBC, Vopt
313	DO ji = fs_nie0, fs_nie1
314	DO jj = nje0, nje1
315	uemsk(jj,:) = umask(ji, jj,:) * tmask_i(ji,jj) * tmask_i(ji+1,jj)
316	vemsk(jj,:) = vmask(ji+1,jj,:) * tmask_i(ji+1,jj)
317	temsk(jj,:) = tmask(ji+1,jj,:) * tmask_i(ji+1,jj)
318	END DO
319	END DO
320
321	END IF
322
323	IF( lp_obc_west ) THEN
324	! ... (jpjwd,jpjwfm1),jpiwob
325	bmask(niw0:niw1,njw0:njw1m1) = 0.e0
326
327	! ... initilization to zero
328	uwmsk(:,:) = 0.e0 ; vwmsk(:,:) = 0.e0 ; twmsk(:,:) = 0.e0
329
330	! ... set 2D mask on West OBC, Vopt
331	DO ji = fs_niw0, fs_niw1
332	DO jj = njw0, njw1
333	uwmsk(jj,:) = umask(ji,jj,:) * tmask_i(ji,jj) * tmask_i(ji+1,jj)
334	vwmsk(jj,:) = vmask(ji,jj,:) * tmask_i(ji,jj)
335	twmsk(jj,:) = tmask(ji,jj,:) * tmask_i(ji,jj)
336	END DO
337	END DO
338
339	END IF
340
341	IF( lp_obc_north ) THEN
342	! ... jpjnob,(jpind,jpisfm1)
343	bmask(nin0:nin1m1,njn0p1:njn1p1) = 0.e0
344
345	! ... initilization to zero
346	unmsk(:,:) = 0.e0 ; vnmsk(:,:) = 0.e0 ; tnmsk(:,:) = 0.e0
347
348	! ... set 2D mask on North OBC, Vopt
349	DO jj = fs_njn0, fs_njn1
350	DO ji = nin0, nin1
351	unmsk(ji,:) = umask(ji,jj+1,:) * tmask_i(ji,jj+1)
352	vnmsk(ji,:) = vmask(ji,jj ,:) * tmask_i(ji,jj) * tmask_i(ji,jj+1)
353	tnmsk(ji,:) = tmask(ji,jj+1,:) * tmask_i(ji,jj+1)
354	END DO
355	END DO
356
357	END IF
358
359	IF( lp_obc_south ) THEN
360	! ... jpjsob,(jpisd,jpisfm1)
361	bmask(nis0:nis1m1,njs0:njs1) = 0.e0
362
363	! ... initilization to zero
364	usmsk(:,:) = 0.e0 ; vsmsk(:,:) = 0.e0 ; tsmsk(:,:) = 0.e0
365
366	! ... set 2D mask on South OBC, Vopt
367	DO jj = fs_njs0, fs_njs1
368	DO ji = nis0, nis1
369	usmsk(ji,:) = umask(ji,jj,:) * tmask_i(ji,jj)
370	vsmsk(ji,:) = vmask(ji,jj,:) * tmask_i(ji,jj) * tmask_i(ji,jj+1)
371	tsmsk(ji,:) = tmask(ji,jj,:) * tmask_i(ji,jj)
372	END DO
373	END DO
374
375	END IF
376
377	! ... Initialize obcumask and obcvmask for the Force filtering
378	! boundary condition in dynspg_flt
379	obcumask(:,:) = umask(:,:,1)
380	obcvmask(:,:) = vmask(:,:,1)
381
382	! ... Initialize obctmsk on overlap region and obcs. This mask
383	! is used in obcvol.F90 to calculate cumulate flux E-P.
384	! obc Tracer point are outside the domain ( U/V obc points) ==> masked by obctmsk
385	! - no flux E-P on obcs and overlap region (jpreci = jprecj = 1)
386	obctmsk(:,:) = tmask_i(:,:)
387
388	IF( lp_obc_east ) THEN
389	! ... East obc Force filtering mask for the grad D
390	obcumask(nie0 :nie1 ,nje0p1:nje1m1) = 0.e0
391	obcvmask(nie0p1:nie1p1,nje0p1:nje1m1) = 0.e0
392	! ... set to 0 on East OBC
393	obctmsk(nie0p1:nie1p1,nje0:nje1) = 0.e0
394	END IF
395
396	IF( lp_obc_west ) THEN
397	! ... West obc Force filtering mask for the grad D
398	obcumask(niw0:niw1,njw0:njw1) = 0.e0
399	obcvmask(niw0:niw1,njw0:njw1) = 0.e0
400	! ... set to 0 on West OBC
401	obctmsk(niw0:niw1,njw0:njw1) = 0.e0
402	END IF
403
404	IF( lp_obc_north ) THEN
405	! ... North obc Force filtering mask for the grad D
406	obcumask(nin0p1:nin1m1,njn0p1:njn1p1) = 0.e0
407	obcvmask(nin0p1:nin1m1,njn0 :njn1 ) = 0.e0
408	! ... set to 0 on North OBC
409	obctmsk(nin0:nin1,njn0p1:njn1p1) = 0.e0
410	END IF
411
412	IF( lp_obc_south ) THEN
413	! ... South obc Force filtering mask for the grad D
414	obcumask(nis0p1:nis1m1,njs0:njs1) = 0.e0
415	obcvmask(nis0p1:nis1m1,njs0:njs1) = 0.e0
416	! ... set to 0 on South OBC
417	obctmsk(nis0:nis1,njs0:njs1) = 0.e0
418	END IF
419
420	! 3.1 Total lateral surface
421	! -------------------------
422	obcsurftot = 0.e0
423
424	IF( lp_obc_east ) THEN ! ... East open boundary lateral surface
425	DO ji = nie0, nie1
426	DO jj = 1, jpj
427	obcsurftot = obcsurftot+hu(ji,jj)e2u(ji,jj)uemsk(jj,1) * MAX(obctmsk(ji,jj),obctmsk(ji+1,jj) )
428	END DO
429	END DO
430	END IF
431
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
440	IF( lp_obc_north ) THEN ! ... North open boundary lateral surface
441	DO jj = njn0, njn1
442	DO ji = 1, jpi
443	obcsurftot = obcsurftot+hv(ji,jj)e1v(ji,jj)vnmsk(ji,1) * MAX(obctmsk(ji,jj),obctmsk(ji,jj+1) )
444	END DO
445	END DO
446	END IF
447
448	IF( lp_obc_south ) THEN ! ... South open boundary lateral surface
449	DO jj = njs0, njs1
450	DO ji = 1, jpi
451	obcsurftot = obcsurftot+hv(ji,jj)e1v(ji,jj)vsmsk(ji,1) * MAX(obctmsk(ji,jj),obctmsk(ji,jj+1) )
452	END DO
453	END DO
454	END IF
455
456	IF( lk_mpp ) CALL mpp_sum( obcsurftot ) ! sum over the global domain
457
458	! 5. Control print on mask
459	! The extremities of the open boundaries must be in land
460	! or else correspond to an "ocean corner" between two open boundaries.
461	! corner 1 is southwest, 2 is south east, 3 is northeast, 4 is northwest.
462	! --------------------------------------------------------------------------
463
464	icorner(:)=0
465
466	! ... control of the west boundary
467	IF( lp_obc_west ) THEN
468	IF( jpiwob < 2 .OR. jpiwob >= jpiglo-2 ) THEN
469	WRITE(ctmp1,*) ' jpiwob exceed ', jpiglo-2, 'or less than 2'
470	CALL ctl_stop( ctmp1 )
471	END IF
472	ztestmask(:)=0.
473	DO ji=niw0,niw1
474	IF( (njw0 + njmpp - 1) == jpjwd ) ztestmask(1)=ztestmask(1)+ tmask(ji,njw0,1)
475	IF( (njw1 + njmpp - 1) == jpjwf ) ztestmask(2)=ztestmask(2)+ tmask(ji,njw1,1)
476	END DO
477	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
478
479	IF( ztestmask(1) /= 0. ) icorner(1)=icorner(1)+1
480	IF( ztestmask(2) /= 0. ) icorner(4)=icorner(4)+1
481	END IF
482
483	! ... control of the east boundary
484	IF( lp_obc_east ) THEN
485	IF( jpieob < 4 .OR. jpieob >= jpiglo ) THEN
486	WRITE(ctmp1,*) ' jpieob exceed ', jpiglo, ' or less than 4'
487	CALL ctl_stop( ctmp1 )
488	END IF
489	ztestmask(:)=0.
490	DO ji=nie0p1,nie1p1
491	IF( (nje0 + njmpp - 1) == jpjed ) ztestmask(1)=ztestmask(1)+ tmask(ji,nje0,1)
492	IF( (nje1 + njmpp - 1) == jpjef ) ztestmask(2)=ztestmask(2)+ tmask(ji,nje1,1)
493	END DO
494	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
495
496	IF( ztestmask(1) /= 0. ) icorner(2)=icorner(2)+1
497	IF( ztestmask(2) /= 0. ) icorner(3)=icorner(3)+1
498	END IF
499
500	! ... control of the north boundary
501	IF( lp_obc_north ) THEN
502	IF( jpjnob < 4 .OR. jpjnob >= jpjglo ) THEN
503	WRITE(ctmp1,*) 'jpjnob exceed ', jpjglo, ' or less than 4'
504	CALL ctl_stop( ctmp1 )
505	END IF
506	ztestmask(:)=0.
507	DO jj=njn0p1,njn1p1
508	IF( (nin0 + nimpp - 1) == jpind ) ztestmask(1)=ztestmask(1)+ tmask(nin0,jj,1)
509	IF( (nin1 + nimpp - 1) == jpinf ) ztestmask(2)=ztestmask(2)+ tmask(nin1,jj,1)
510	END DO
511	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
512
513	IF( ztestmask(1) /= 0. ) icorner(4)=icorner(4)+1
514	IF( ztestmask(2) /= 0. ) icorner(3)=icorner(3)+1
515	END IF
516
517	! ... control of the south boundary
518	IF( lp_obc_south ) THEN
519	IF( jpjsob < 2 .OR. jpjsob >= jpjglo-2 ) THEN
520	WRITE(ctmp1,*) ' jpjsob exceed ', jpjglo-2, ' or less than 2'
521	CALL ctl_stop( ctmp1 )
522	END IF
523	ztestmask(:)=0.
524	DO jj=njs0,njs1
525	IF( (nis0 + nimpp - 1) == jpisd ) ztestmask(1)=ztestmask(1)+ tmask(nis0,jj,1)
526	IF( (nis1 + nimpp - 1) == jpisf ) ztestmask(2)=ztestmask(2)+ tmask(nis1,jj,1)
527	END DO
528	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
529
530	IF( ztestmask(1) /= 0. ) icorner(1)=icorner(1)+1
531	IF( ztestmask(2) /= 0. ) icorner(2)=icorner(2)+1
532	END IF
533
534	IF( icorner(1) == 2 ) THEN
535	IF(lwp) WRITE(numout,*)
536	IF(lwp) WRITE(numout,*) ' South West ocean corner, two open boudaries'
537	IF(lwp) WRITE(numout,*) ' ========== '
538	IF(lwp) WRITE(numout,*)
539	IF( jpisd /= jpiwob.OR.jpjsob /= jpjwd ) &
540	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
541
542	ELSE IF( icorner(1) == 1 ) THEN
543	CALL ctl_stop( ' Open boundaries do not fit at SW corner, we stop' )
544	END IF
545
546	IF( icorner(2) == 2 ) THEN
547	IF(lwp) WRITE(numout,*)
548	IF(lwp) WRITE(numout,*) ' South East ocean corner, two open boudaries'
549	IF(lwp) WRITE(numout,*) ' ========== '
550	IF(lwp) WRITE(numout,*)
551	IF( jpisf /= jpieob+1.OR.jpjsob /= jpjed ) &
552	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
553	ELSE IF( icorner(2) == 1 ) THEN
554	CALL ctl_stop( ' Open boundaries do not fit at SE corner, we stop' )
555	END IF
556
557	IF( icorner(3) == 2 ) THEN
558	IF(lwp) WRITE(numout,*)
559	IF(lwp) WRITE(numout,*) ' North East ocean corner, two open boudaries'
560	IF(lwp) WRITE(numout,*) ' ========== '
561	IF(lwp) WRITE(numout,*)
562	IF( jpinf /= jpieob+1 .OR. jpjnob+1 /= jpjef ) &
563	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
564	ELSE IF( icorner(3) == 1 ) THEN
565	CALL ctl_stop( ' Open boundaries do not fit at NE corner, we stop' )
566	END IF
567
568	IF( icorner(4) == 2 ) THEN
569	IF(lwp) WRITE(numout,*)
570	IF(lwp) WRITE(numout,*) ' North West ocean corner, two open boudaries'
571	IF(lwp) WRITE(numout,*) ' ========== '
572	IF(lwp) WRITE(numout,*)
573	IF( jpind /= jpiwob.OR.jpjnob+1 /= jpjwf ) &
574	& CALL ctl_stop( ' Open boundaries do not fit, we stop' )
575	ELSE IF( icorner(4) == 1 ) THEN
576	CALL ctl_stop( ' Open boundaries do not fit at NW corner, we stop' )
577	END IF
578
579	! 6. Initialization of open boundary variables (u, v, t, s)
580	! --------------------------------------------------------------
581	! only if at least one boundary is radiative
582	IF ( inumfbc < nbobc .AND. ln_rstart ) THEN
583	! Restart from restart.obc
584	CALL obc_rst_read
585	ELSE
586
587	! ! ... Initialization to zero of radiation arrays.
588	! ! Those have dimensions of local subdomains
589
590	uebnd(:,:,:,:) = 0.e0 ; unbnd(:,:,:,:) = 0.e0
591	vebnd(:,:,:,:) = 0.e0 ; vnbnd(:,:,:,:) = 0.e0
592	tebnd(:,:,:,:) = 0.e0 ; tnbnd(:,:,:,:) = 0.e0
593	sebnd(:,:,:,:) = 0.e0 ; snbnd(:,:,:,:) = 0.e0
594
595	uwbnd(:,:,:,:) = 0.e0 ; usbnd(:,:,:,:) = 0.e0
596	vwbnd(:,:,:,:) = 0.e0 ; vsbnd(:,:,:,:) = 0.e0
597	twbnd(:,:,:,:) = 0.e0 ; tsbnd(:,:,:,:) = 0.e0
598	swbnd(:,:,:,:) = 0.e0 ; ssbnd(:,:,:,:) = 0.e0
599
600	END IF
601
602	! 7. Control print
603	! -----------------------------------------------------------------
604
605	! ... control of the east boundary
606	IF( lp_obc_east ) THEN
607	istop = 0
608	IF( jpieob < 4 .OR. jpieob >= jpiglo ) THEN
609	IF(lwp) WRITE(numout,cform_err)
610	IF(lwp) WRITE(numout,*) ' jpieob exceed ', jpim1, ' or less than 4'
611	istop = istop + 1
612	END IF
613
614	IF( lk_mpp ) THEN
615	! ...
616	IF( nimpp > jpieob-5) THEN
617	IF(lwp) WRITE(numout,cform_err)
618	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the East OBC'
619	IF(lwp) WRITE(numout,*) ' nimpp must be < jpieob-5'
620	istop = istop + 1
621	ENDIF
622	ELSE
623
624	! ... stop if e r r o r (s) detected
625	IF( istop /= 0 ) THEN
626	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
627	CALL ctl_stop( ctmp1 )
628	ENDIF
629	ENDIF
630	ENDIF
631
632	! ... control of the west boundary
633	IF( lp_obc_west ) THEN
634	istop = 0
635	IF( jpiwob < 2 .OR. jpiwob >= jpiglo ) THEN
636	IF(lwp) WRITE(numout,cform_err)
637	IF(lwp) WRITE(numout,*) ' jpiwob exceed ', jpim1, ' or less than 2'
638	istop = istop + 1
639	END IF
640
641	IF( lk_mpp ) THEN
642	IF( (nimpp < jpiwob+5) .AND. (nimpp > 1) ) THEN
643	IF(lwp) WRITE(numout,cform_err)
644	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the West OBC'
645	IF(lwp) WRITE(numout,*) ' nimpp must be > jpiwob-5 or =1'
646	istop = istop + 1
647	ENDIF
648	ELSE
649
650	! ... stop if e r r o r (s) detected
651	IF( istop /= 0 ) THEN
652	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
653	CALL ctl_stop( ctmp1 )
654	ENDIF
655	ENDIF
656	ENDIF
657
658	! control of the north boundary
659	IF( lp_obc_north ) THEN
660	istop = 0
661	IF( jpjnob < 4 .OR. jpjnob >= jpjglo ) THEN
662	IF(lwp) WRITE(numout,cform_err)
663	IF(lwp) WRITE(numout,*) ' jpjnob exceed ', jpjm1,' or less than 4'
664	istop = istop + 1
665	END IF
666
667	IF( lk_mpp ) THEN
668	IF( njmpp > jpjnob-5) THEN
669	IF(lwp) WRITE(numout,cform_err)
670	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the North OBC'
671	IF(lwp) WRITE(numout,*) ' njmpp must be < jpjnob-5'
672	istop = istop + 1
673	ENDIF
674	ELSE
675
676	! ... stop if e r r o r (s) detected
677	IF( istop /= 0 ) THEN
678	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
679	CALL ctl_stop( ctmp1 )
680	ENDIF
681	ENDIF
682	ENDIF
683
684	! control of the south boundary
685	IF( lp_obc_south ) THEN
686	istop = 0
687	IF( jpjsob < 2 .OR. jpjsob >= jpjglo ) THEN
688	IF(lwp) WRITE(numout,cform_err)
689	IF(lwp) WRITE(numout,*) ' jpjsob exceed ', jpjm1,' or less than 2'
690	istop = istop + 1
691	END IF
692
693	IF( lk_mpp ) THEN
694	IF( (njmpp < jpjsob+5) .AND. (njmpp > 1) ) THEN
695	IF(lwp) WRITE(numout,cform_err)
696	IF(lwp) WRITE(numout,*) ' A sub-domain is too close to the South OBC'
697	IF(lwp) WRITE(numout,*) ' njmpp must be > jpjsob+5 or =1'
698	istop = istop + 1
699	ENDIF
700	ELSE
701
702	! ... stop if e r r o r (s) detected
703	IF( istop /= 0 ) THEN
704	WRITE(ctmp1,*) istop,' obcini : E R R O R (S) detected : stop'
705	CALL ctl_stop( ctmp1 )
706	ENDIF
707	ENDIF
708	ENDIF
709
710	END SUBROUTINE obc_init
711
712	#else
713	!!---------------------------------------------------------------------------------
714	!! Dummy module NO open boundaries
715	!!---------------------------------------------------------------------------------
716	CONTAINS
717	SUBROUTINE obc_init ! Dummy routine
718	END SUBROUTINE obc_init
719	#endif
720
721	!!=================================================================================
722	END MODULE obcini

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