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

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source: trunk/NEMOGCM/NEMO/OPA_SRC/OBC/obcdta.F90 @ 3565

Last change on this file since 3565 was 3565, checked in by rblod, 12 years ago
Fix allocation of msk in obcdta, see ticket #957
Property svn:keywords set to `Id`
File size: 60.1 KB

Line
1	MODULE obcdta
2	!!==============================================================================
3	!! * MODULE obcdta *
4	!! Open boundary data : read the data for the open boundaries.
5	!!==============================================================================
6	!! History : OPA ! 1998-05 (J.M. Molines) Original code
7	!! 8.5 ! 2002-10 (C. Talandier, A-M. Treguier) Free surface, F90
8	!! NEMO 1.0 ! 2004-06 (F. Durand, A-M. Treguier) Netcdf BC files on input
9	!! 3.0 ! 2007-2008 (C. Langlais, P. Mathiot, J.M. Molines) high frequency boundaries data
10	!!------------------------------------------------------------------------------
11	#if defined key_obc
12	!!------------------------------------------------------------------------------
13	!! 'key_obc' : Open Boundary Conditions
14	!!------------------------------------------------------------------------------
15	!! obc_dta : read u, v, t, s data along each open boundary
16	!!------------------------------------------------------------------------------
17	USE oce ! ocean dynamics and tracers
18	USE dom_oce ! ocean space and time domain
19	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
20	USE phycst ! physical constants
21	USE obc_par ! ocean open boundary conditions
22	USE obc_oce ! ocean open boundary conditions
23	USE in_out_manager ! I/O logical units
24	USE lib_mpp ! distributed memory computing
25	USE dynspg_oce ! ocean: surface pressure gradient
26	USE ioipsl ! now only for ymds2ju function
27	USE iom !
28
29	IMPLICIT NONE
30	PRIVATE
31
32	PUBLIC obc_dta ! routine called by step.F90
33	PUBLIC obc_dta_bt ! routine called by dynspg_ts.F90
34	PUBLIC obc_dta_alloc ! function called by obcini.F90
35
36	REAL(wp), DIMENSION(2) :: zjcnes_obc !
37	REAL(wp), DIMENSION(:), ALLOCATABLE :: ztcobc
38	REAL(wp) :: rdt_obc
39	REAL(wp) :: zjcnes
40	INTEGER :: imm0, iyy0, idd0, iyy, imm, idd
41	INTEGER :: nt_a=2, nt_b=1, itobc, ndate0_cnes, nday_year0
42	INTEGER :: itobce, itobcw, itobcs, itobcn, itobc_b ! number of time steps in OBC files
43
44	INTEGER :: ntobc ! where we are in the obc file
45	INTEGER :: ntobc_b ! first record used
46	INTEGER :: ntobc_a ! second record used
47
48	CHARACTER (len=40) :: cl_obc_eTS, cl_obc_eU ! name of data files
49	CHARACTER (len=40) :: cl_obc_wTS, cl_obc_wU ! - -
50	CHARACTER (len=40) :: cl_obc_nTS, cl_obc_nV ! - -
51	CHARACTER (len=40) :: cl_obc_sTS, cl_obc_sV ! - -
52
53	! bt arrays for interpolating time dependent data on the boundaries
54	INTEGER :: nt_m=0, ntobc_m
55	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ubtedta, vbtedta, sshedta ! East
56	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ubtwdta, vbtwdta, sshwdta ! West
57	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ubtndta, vbtndta, sshndta ! North
58	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ubtsdta, vbtsdta, sshsdta ! South
59	! arrays used for interpolating time dependent data on the boundaries
60	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: uedta, vedta, tedta, sedta ! East
61	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: uwdta, vwdta, twdta, swdta ! West
62	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: undta, vndta, tndta, sndta ! North
63	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: usdta, vsdta, tsdta, ssdta ! South
64
65	! Masks set to .TRUE. after successful allocation below
66	LOGICAL , ALLOCATABLE, SAVE, DIMENSION(:,:) :: ltemsk, luemsk, lvemsk ! boolean msks
67	LOGICAL , ALLOCATABLE, SAVE, DIMENSION(:,:) :: ltwmsk, luwmsk, lvwmsk ! used for outliers
68	LOGICAL , ALLOCATABLE, SAVE, DIMENSION(:,:) :: ltnmsk, lunmsk, lvnmsk ! checks
69	LOGICAL , ALLOCATABLE, SAVE, DIMENSION(:,:) :: ltsmsk, lusmsk, lvsmsk
70
71	!! * Substitutions
72	# include "obc_vectopt_loop_substitute.h90"
73	# include "domzgr_substitute.h90"
74	!!----------------------------------------------------------------------
75	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
76	!! $Id$
77	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
78	!!----------------------------------------------------------------------
79	CONTAINS
80
81	INTEGER FUNCTION obc_dta_alloc()
82	!!-------------------------------------------------------------------
83	!! * ROUTINE obc_dta_alloc *
84	!!-------------------------------------------------------------------
85	INTEGER :: ierr(2)
86	!!-------------------------------------------------------------------
87	# if defined key_dynspg_ts
88	ALLOCATE( & ! time-splitting : 0:jptobc
89	! bt arrays for interpolating time dependent data on the boundaries
90	& ubtedta (jpj,0:jptobc) , vbtedta (jpj,0:jptobc) , sshedta (jpj,0:jptobc) , &
91	& ubtwdta (jpj,0:jptobc) , vbtwdta (jpj,0:jptobc) , sshwdta (jpj,0:jptobc) , &
92	& ubtndta (jpi,0:jptobc) , vbtndta (jpi,0:jptobc) , sshndta (jpi,0:jptobc) , &
93	& ubtsdta (jpi,0:jptobc) , vbtsdta (jpi,0:jptobc) , sshsdta (jpi,0:jptobc) , &
94	! arrays used for interpolating time dependent data on the boundaries
95	& uedta(jpj,jpk,0:jptobc) , vedta(jpj,jpk,0:jptobc) , &
96	& tedta(jpj,jpk,0:jptobc) , sedta(jpj,jpk,0:jptobc) , &
97	& uwdta(jpj,jpk,0:jptobc) , vwdta(jpj,jpk,0:jptobc) , &
98	& twdta(jpj,jpk,0:jptobc) , swdta(jpj,jpk,0:jptobc) , &
99	& undta(jpi,jpk,0:jptobc) , vndta(jpi,jpk,0:jptobc) , &
100	& tndta(jpi,jpk,0:jptobc) , sndta(jpi,jpk,0:jptobc) , &
101	& usdta(jpi,jpk,0:jptobc) , vsdta(jpi,jpk,0:jptobc) , &
102	& tsdta(jpi,jpk,0:jptobc) , ssdta(jpi,jpk,0:jptobc) , STAT=ierr(1) )
103	# else
104	ALLOCATE( & ! no time splitting : 1:jptobc
105	! bt arrays for interpolating time dependent data on the boundaries
106	& ubtedta (jpj,jptobc) , vbtedta (jpj,jptobc) , sshedta (jpj,jptobc) , &
107	& ubtwdta (jpj,jptobc) , vbtwdta (jpj,jptobc) , sshwdta (jpj,jptobc) , &
108	& ubtndta (jpi,jptobc) , vbtndta (jpi,jptobc) , sshndta (jpi,jptobc) , &
109	& ubtsdta (jpi,jptobc) , vbtsdta (jpi,jptobc) , sshsdta (jpi,jptobc) , &
110	! arrays used for interpolating time dependent data on the boundaries
111	& uedta(jpj,jpk,jptobc) , vedta(jpj,jpk,jptobc) , &
112	& tedta(jpj,jpk,jptobc) , sedta(jpj,jpk,jptobc) , &
113	& uwdta(jpj,jpk,jptobc) , vwdta(jpj,jpk,jptobc) , &
114	& twdta(jpj,jpk,jptobc) , swdta(jpj,jpk,jptobc) , &
115	& undta(jpi,jpk,jptobc) , vndta(jpi,jpk,jptobc) , &
116	& tndta(jpi,jpk,jptobc) , sndta(jpi,jpk,jptobc) , &
117	& usdta(jpi,jpk,jptobc) , vsdta(jpi,jpk,jptobc) , &
118	& tsdta(jpi,jpk,jptobc) , ssdta(jpi,jpk,jptobc) , STAT=ierr(1) )
119	# endif
120
121	ALLOCATE( ltemsk(jpj,jpk) , luemsk(jpj,jpk) , lvemsk(jpj,jpk) , &
122	& ltwmsk(jpj,jpk) , luwmsk(jpj,jpk) , lvwmsk(jpj,jpk) , &
123	& ltnmsk(jpi,jpk) , lunmsk(jpi,jpk) , lvnmsk(jpi,jpk) , &
124	& ltsmsk(jpi,jpk) , lusmsk(jpi,jpk) , lvsmsk(jpi,jpk) , STAT=ierr(2) )
125
126	obc_dta_alloc = MAXVAL( ierr )
127	IF( lk_mpp ) CALL mpp_sum( obc_dta_alloc )
128
129	IF( obc_dta_alloc == 0 ) THEN ! Initialise mask values following successful allocation
130	! east ! west ! north ! south !
131	ltemsk(:,:) = .TRUE. ; ltwmsk(:,:) = .TRUE. ; ltnmsk(:,:) = .TRUE. ; ltsmsk(:,:) = .TRUE.
132	luemsk(:,:) = .TRUE. ; luwmsk(:,:) = .TRUE. ; lunmsk(:,:) = .TRUE. ; lusmsk(:,:) = .TRUE.
133	lvemsk(:,:) = .TRUE. ; lvwmsk(:,:) = .TRUE. ; lvnmsk(:,:) = .TRUE. ; lvsmsk(:,:) = .TRUE.
134	END IF
135	!
136	END FUNCTION obc_dta_alloc
137
138
139	SUBROUTINE obc_dta( kt )
140	!!---------------------------------------------------------------------------
141	!! * SUBROUTINE obc_dta *
142	!!
143	!! ** Purpose : Find the climatological boundary arrays for the specified date,
144	!! The boundary arrays are netcdf files. Three possible cases:
145	!! - one time frame only in the file (time dimension = 1).
146	!! in that case the boundary data does not change in time.
147	!! - many time frames. In that case, if we have 12 frames
148	!! we assume monthly fields.
149	!! Else, we assume that time_counter is in seconds
150	!! since the beginning of either the current year or a reference
151	!! year given in the namelist.
152	!! (no check is done so far but one would have to check the "unit"
153	!! attribute of variable time_counter).
154	!!
155	!!---------------------------------------------------------------------------
156	INTEGER, INTENT( in ) :: kt ! ocean time-step index
157	!
158	INTEGER, SAVE :: immfile, iyyfile !
159	INTEGER :: nt ! record indices (incrementation)
160	REAL(wp) :: zsec, zxy, znum, zden ! time interpolation weight
161	!!---------------------------------------------------------------------------
162
163	! 0. initialisation :
164	! --------------------
165	IF ( kt == nit000 ) CALL obc_dta_ini ( kt )
166	IF ( nobc_dta == 0 ) RETURN ! already done in obc_dta_ini
167	IF ( itobc == 1 ) RETURN ! case of only one time frame in file done in obc_dta_ini
168
169	! in the following code, we assume that obc data are read from files, with more than 1 time frame in it
170
171	iyyfile=iyy ; immfile = 00 ! set component of the current file name
172	IF ( cffile /= 'annual') immfile = imm !
173	IF ( ln_obc_clim ) iyyfile = 0000 ! assume that climatological files are labeled y0000
174
175	! 1. Synchronize time of run with time of data files
176	!---------------------------------------------------
177	! nday_year is the day number in the current year ( 1 for 01/01 )
178	zsec=MOD( (kt-nit000)rdt - (nday_year - nday_year0 )rday, rday ) ! number of seconds in the current day
179	IF (ln_obc_clim) THEN
180	zjcnes = nday_year - 1 + zsec/rday
181	ELSE
182	zjcnes = zjcnes + rdt/rday
183	ENDIF
184
185	! look for 'before' record number in the current file
186	ntobc = nrecbef () ! this function return the record number for 'before', relative to zjcnes
187
188	IF (MOD(kt-1,10)==0) THEN
189	IF (lwp) WRITE(numout,*) 'kt= ',kt,' zjcnes =', zjcnes,' ndastp =',ndastp, 'mm =',imm
190	END IF
191
192	! 2. read a new data if necessary
193	!--------------------------------
194	IF ( ntobc /= ntobc_b ) THEN
195	! we need to read the 'after' record
196	! swap working index:
197	# if defined key_dynspg_ts
198	nt=nt_m ; nt_m=nt_b ; nt_b=nt
199	# endif
200	nt=nt_b ; nt_b=nt_a ; nt_a=nt
201	ntobc_b = ntobc
202
203	! new record number :
204	ntobc_a = ntobc_a + 1
205
206	! all tricky things related to record number, changing files etc... are managed by obc_read
207
208	CALL obc_read (kt, nt_a, ntobc_a, iyyfile, immfile )
209
210	! update zjcnes_obc
211	# if defined key_dynspg_ts
212	ntobc_m=mod(ntobc_b-2+itobc,itobc)+1
213	zjcnes_obc(nt_m)= ztcobc(ntobc_m)
214	# endif
215	zjcnes_obc(nt_b)= ztcobc(ntobc_b)
216	zjcnes_obc(nt_a)= ztcobc(ntobc_a)
217	ENDIF
218
219	! 3. interpolation at each time step
220	! ------------------------------------
221	IF( ln_obc_clim) THEN
222	znum= MOD(zjcnes - zjcnes_obc(nt_b), REAL(nyear_len(1),wp) )
223	IF( znum < 0 ) znum = znum + REAL(nyear_len(1),wp)
224	zden= MOD(zjcnes_obc(nt_a) - zjcnes_obc(nt_b), REAL(nyear_len(1),wp) )
225	IF( zden < 0 ) zden = zden + REAL(nyear_len(1),wp)
226	ELSE
227	znum= zjcnes - zjcnes_obc(nt_b)
228	zden= zjcnes_obc(nt_a) - zjcnes_obc(nt_b)
229	ENDIF
230	zxy = znum / zden
231
232	IF( lp_obc_east ) THEN
233	! fills sfoe, tfoe, ufoe ,vfoe
234	sfoe(:,:) = zxy * sedta (:,:,nt_a) + (1. - zxy)*sedta(:,:,nt_b)
235	tfoe(:,:) = zxy * tedta (:,:,nt_a) + (1. - zxy)*tedta(:,:,nt_b)
236	ufoe(:,:) = zxy * uedta (:,:,nt_a) + (1. - zxy)*uedta(:,:,nt_b)
237	vfoe(:,:) = zxy * vedta (:,:,nt_a) + (1. - zxy)*vedta(:,:,nt_b)
238	ENDIF
239
240	IF( lp_obc_west) THEN
241	! fills sfow, tfow, ufow ,vfow
242	sfow(:,:) = zxy * swdta (:,:,nt_a) + (1. - zxy)*swdta(:,:,nt_b)
243	tfow(:,:) = zxy * twdta (:,:,nt_a) + (1. - zxy)*twdta(:,:,nt_b)
244	ufow(:,:) = zxy * uwdta (:,:,nt_a) + (1. - zxy)*uwdta(:,:,nt_b)
245	vfow(:,:) = zxy * vwdta (:,:,nt_a) + (1. - zxy)*vwdta(:,:,nt_b)
246	ENDIF
247
248	IF( lp_obc_north) THEN
249	! fills sfon, tfon, ufon ,vfon
250	sfon(:,:) = zxy * sndta (:,:,nt_a) + (1. - zxy)*sndta(:,:,nt_b)
251	tfon(:,:) = zxy * tndta (:,:,nt_a) + (1. - zxy)*tndta(:,:,nt_b)
252	ufon(:,:) = zxy * undta (:,:,nt_a) + (1. - zxy)*undta(:,:,nt_b)
253	vfon(:,:) = zxy * vndta (:,:,nt_a) + (1. - zxy)*vndta(:,:,nt_b)
254	ENDIF
255
256	IF( lp_obc_south) THEN
257	! fills sfos, tfos, ufos ,vfos
258	sfos(:,:) = zxy * ssdta (:,:,nt_a) + (1. - zxy)*ssdta(:,:,nt_b)
259	tfos(:,:) = zxy * tsdta (:,:,nt_a) + (1. - zxy)*tsdta(:,:,nt_b)
260	ufos(:,:) = zxy * usdta (:,:,nt_a) + (1. - zxy)*usdta(:,:,nt_b)
261	vfos(:,:) = zxy * vsdta (:,:,nt_a) + (1. - zxy)*vsdta(:,:,nt_b)
262	ENDIF
263	END SUBROUTINE obc_dta
264
265
266	SUBROUTINE obc_dta_ini( kt )
267	!!-----------------------------------------------------------------------------
268	!! * SUBROUTINE obc_dta_ini *
269	!!
270	!! ** Purpose : When obc_dta first call, realize some data initialization
271	!!----------------------------------------------------------------------------
272	INTEGER, INTENT(in) :: kt ! ocean time-step index
273	!
274	INTEGER :: ji, jj ! dummy loop indices
275	INTEGER, SAVE :: immfile, iyyfile !
276
277	! variables for the julian day calculation
278	INTEGER :: iyear, imonth, iday
279	REAL(wp) :: zsec , zjulian, zjuliancnes
280
281	IF(lwp) WRITE(numout,*)
282	IF(lwp) WRITE(numout,*) 'obc_dta : find boundary data'
283	IF(lwp) WRITE(numout,*) '~~~~~~~'
284	IF (lwp) THEN
285	IF ( nobc_dta == 0 ) THEN
286	WRITE(numout,*) ' OBC data taken from initial conditions.'
287	ELSE
288	WRITE(numout,*) ' OBC data taken from netcdf files.'
289	ENDIF
290	ENDIF
291	nday_year0 = nday_year ! to remember the day when kt=nit000
292
293	sedta(:,:,:) = 0.e0 ; tedta(:,:,:) = 0.e0 ; uedta(:,:,:) = 0.e0 ; vedta(:,:,:) = 0.e0 ! East
294	swdta(:,:,:) = 0.e0 ; twdta(:,:,:) = 0.e0 ; uwdta(:,:,:) = 0.e0 ; vwdta(:,:,:) = 0.e0 ! West
295	sndta(:,:,:) = 0.e0 ; tndta(:,:,:) = 0.e0 ; undta(:,:,:) = 0.e0 ; vndta(:,:,:) = 0.e0 ! North
296	ssdta(:,:,:) = 0.e0 ; tsdta(:,:,:) = 0.e0 ; usdta(:,:,:) = 0.e0 ; vsdta(:,:,:) = 0.e0 ! South
297
298	sfoe(:,:) = 0.e0 ; tfoe(:,:) = 0.e0 ; ufoe(:,:) = 0.e0 ; vfoe(:,:) = 0.e0 ! East
299	sfow(:,:) = 0.e0 ; tfow(:,:) = 0.e0 ; ufow(:,:) = 0.e0 ; vfow(:,:) = 0.e0 ! West
300	sfon(:,:) = 0.e0 ; tfon(:,:) = 0.e0 ; ufon(:,:) = 0.e0 ; vfon(:,:) = 0.e0 ! North
301	sfos(:,:) = 0.e0 ; tfos(:,:) = 0.e0 ; ufos(:,:) = 0.e0 ; vfos(:,:) = 0.e0 ! South
302
303	IF (nobc_dta == 0 ) THEN ! boundary data are the initial data of this run (set only at nit000)
304	IF (lp_obc_east) THEN ! East
305	DO ji = nie0 , nie1
306	sfoe(nje0:nje1,:) = temsk(nje0:nje1,:) * tsn(ji+1 , nje0:nje1 , :,jp_sal) * tmask(ji+1,nje0:nje1 , :)
307	tfoe(nje0:nje1,:) = temsk(nje0:nje1,:) * tsn(ji+1 , nje0:nje1 , :,jp_tem) * tmask(ji+1,nje0:nje1 , :)
308	ufoe(nje0:nje1,:) = uemsk(nje0:nje1,:) * un (ji , nje0:nje1 , :) * umask(ji, nje0:nje1 , :)
309	vfoe(nje0:nje1,:) = vemsk(nje0:nje1,:) * vn (ji+1 , nje0:nje1 , :) * vmask(ji+1,nje0:nje1 , :)
310	END DO
311	ENDIF
312
313	IF (lp_obc_west) THEN ! West
314	DO ji = niw0 , niw1
315	sfow(njw0:njw1,:) = twmsk(njw0:njw1,:) * tsn(ji , njw0:njw1 , :,jp_sal) * tmask(ji , njw0:njw1 , :)
316	tfow(njw0:njw1,:) = twmsk(njw0:njw1,:) * tsn(ji , njw0:njw1 , :,jp_tem) * tmask(ji , njw0:njw1 , :)
317	ufow(njw0:njw1,:) = uwmsk(njw0:njw1,:) * un (ji , njw0:njw1 , :) * umask(ji , njw0:njw1 , :)
318	vfow(njw0:njw1,:) = vwmsk(njw0:njw1,:) * vn (ji , njw0:njw1 , :) * vmask(ji , njw0:njw1 , :)
319	END DO
320	ENDIF
321
322	IF (lp_obc_north) THEN ! North
323	DO jj = njn0 , njn1
324	sfon(nin0:nin1,:) = tnmsk(nin0:nin1,:) * tsn(nin0:nin1 , jj+1 , :,jp_sal) * tmask(nin0:nin1 , jj+1 , :)
325	tfon(nin0:nin1,:) = tnmsk(nin0:nin1,:) * tsn(nin0:nin1 , jj+1 , :,jp_tem) * tmask(nin0:nin1 , jj+1 , :)
326	ufon(nin0:nin1,:) = unmsk(nin0:nin1,:) * un (nin0:nin1 , jj+1 , :) * umask(nin0:nin1 , jj+1 , :)
327	vfon(nin0:nin1,:) = vnmsk(nin0:nin1,:) * vn (nin0:nin1 , jj , :) * vmask(nin0:nin1 , jj , :)
328	END DO
329	ENDIF
330
331	IF (lp_obc_south) THEN ! South
332	DO jj = njs0 , njs1
333	sfos(nis0:nis1,:) = tsmsk(nis0:nis1,:) * tsn(nis0:nis1 , jj , :,jp_sal) * tmask(nis0:nis1 , jj , :)
334	tfos(nis0:nis1,:) = tsmsk(nis0:nis1,:) * tsn(nis0:nis1 , jj , :,jp_tem) * tmask(nis0:nis1 , jj , :)
335	ufos(nis0:nis1,:) = usmsk(nis0:nis1,:) * un (nis0:nis1 , jj , :) * umask(nis0:nis1 , jj , :)
336	vfos(nis0:nis1,:) = vsmsk(nis0:nis1,:) * vn (nis0:nis1 , jj , :) * vmask(nis0:nis1 , jj , :)
337	END DO
338	ENDIF
339	RETURN ! exit the routine all is done
340	ENDIF ! nobc_dta = 0
341
342	!!!! In the following OBC data are read from files.
343	! all logical-mask are initialzed to true when declared
344	WHERE ( temsk == 0 ) ltemsk=.FALSE.
345	WHERE ( uemsk == 0 ) luemsk=.FALSE.
346	WHERE ( vemsk == 0 ) lvemsk=.FALSE.
347
348	WHERE ( twmsk == 0 ) ltwmsk=.FALSE.
349	WHERE ( uwmsk == 0 ) luwmsk=.FALSE.
350	WHERE ( vwmsk == 0 ) lvwmsk=.FALSE.
351
352	WHERE ( tnmsk == 0 ) ltnmsk=.FALSE.
353	WHERE ( unmsk == 0 ) lunmsk=.FALSE.
354	WHERE ( vnmsk == 0 ) lvnmsk=.FALSE.
355
356	WHERE ( tsmsk == 0 ) ltsmsk=.FALSE.
357	WHERE ( usmsk == 0 ) lusmsk=.FALSE.
358	WHERE ( vsmsk == 0 ) lvsmsk=.FALSE.
359
360	iyear=1950; imonth=01; iday=01; zsec=0.
361	! zjuliancnes : julian day corresonding to 01/01/1950
362	CALL ymds2ju(iyear, imonth, iday,zsec , zjuliancnes)
363
364	!current year and curent month
365	iyy=INT(ndastp/10000) ; imm=INT((ndastp -iyy10000)/100) ; idd=(ndastp-iyy10000-imm*100)
366	IF (iyy < 1900) iyy = iyy+1900 ! always assume that years are on 4 digits.
367	CALL ymds2ju(iyy, imm, idd ,zsec , zjulian)
368	ndate0_cnes = zjulian - zjuliancnes ! jcnes day when call to obc_dta_ini
369
370	iyyfile=iyy ; immfile=0 ! set component of the current file name
371	IF ( cffile /= 'annual') immfile=imm
372	IF ( ln_obc_clim) iyyfile = 0 ! assume that climatological files are labeled y0000
373
374	CALL obc_dta_chktime ( iyyfile, immfile )
375
376	IF ( itobc == 1 ) THEN
377	! in this case we will provide boundary data only once.
378	nt_a=1 ; ntobc_a=1
379	CALL obc_read (nit000, nt_a, ntobc_a, iyyfile, immfile)
380	IF( lp_obc_east ) THEN
381	! fills sfoe, tfoe, ufoe ,vfoe
382	sfoe(:,:) = sedta (:,:,1) ; tfoe(:,:) = tedta (:,:,1)
383	ufoe(:,:) = uedta (:,:,1) ; vfoe(:,:) = vedta (:,:,1)
384	ENDIF
385
386	IF( lp_obc_west) THEN
387	! fills sfow, tfow, ufow ,vfow
388	sfow(:,:) = swdta (:,:,1) ; tfow(:,:) = twdta (:,:,1)
389	ufow(:,:) = uwdta (:,:,1) ; vfow(:,:) = vwdta (:,:,1)
390	ENDIF
391
392	IF( lp_obc_north) THEN
393	! fills sfon, tfon, ufon ,vfon
394	sfon(:,:) = sndta (:,:,1) ; tfon(:,:) = tndta (:,:,1)
395	ufon(:,:) = undta (:,:,1) ; vfon(:,:) = vndta (:,:,1)
396	ENDIF
397
398	IF( lp_obc_south) THEN
399	! fills sfos, tfos, ufos ,vfos
400	sfos(:,:) = ssdta (:,:,1) ; tfos(:,:) = tsdta (:,:,1)
401	ufos(:,:) = usdta (:,:,1) ; vfos(:,:) = vsdta (:,:,1)
402	ENDIF
403	RETURN ! we go out of obc_dta_ini -------------------------------------->>>>>
404	ENDIF
405
406	! nday_year is the day number in the current year ( 1 for 01/01 )
407	! we suppose that we always start from the begining of a day
408	! zsec=MOD( (kt-nit000)rdt - (nday_year - nday_year0 )rday, rday ) ! number of seconds in the current day
409	zsec=0.e0 ! here, kt=nit000, nday_year = ndat_year0
410
411	IF (ln_obc_clim) THEN
412	zjcnes = nday_year - 1 + zsec/rday ! for clim file time is in days in a year
413	ELSE
414	zjcnes = ndate0_cnes + (nday_year - nday_year0 ) + zsec/rday
415	ENDIF
416
417	! look for 'before' record number in the current file
418	ntobc = nrecbef ()
419
420	IF (lwp) WRITE(numout,*) 'obc files frequency :',cffile
421	IF (lwp) WRITE(numout,*) ' zjcnes0 =',zjcnes,' ndastp0 =',ndastp
422	IF (lwp) WRITE(numout,*) ' annee0 ',iyy,' month0 ', imm,' day0 ', idd
423	IF (lwp) WRITE(numout,*) 'first file open :',cl_obc_nTS
424
425	! record initialisation
426	!--------------------
427	nt_b = 1 ; nt_a = 2
428
429	ntobc_a = ntobc + 1
430	ntobc_b = ntobc
431
432	CALL obc_read (kt, nt_b, ntobc_b, iyyfile, immfile) ! read 'before' fields
433	CALL obc_read (kt, nt_a, ntobc_a, iyyfile, immfile) ! read 'after' fields
434
435	! additional frame in case of time-splitting
436	# if defined key_dynspg_ts
437	nt_m = 0
438	ntobc_m=mod(ntobc_b-2+itobc,itobc)+1
439	zjcnes_obc(nt_m)= ztcobc(ntobc_m) ! FDbug has not checked that this is correct!!
440	IF (ln_rstart) THEN
441	CALL obc_read (kt, nt_m, ntobc_m, iyyfile, immfile) ! read 'after' fields
442	ENDIF
443	# endif
444
445	zjcnes_obc(nt_b)= ztcobc(ntobc_b)
446	zjcnes_obc(nt_a)= ztcobc(ntobc_a)
447	!
448	END SUBROUTINE obc_dta_ini
449
450
451	SUBROUTINE obc_dta_chktime (kyyfile, kmmfile)
452	!
453	! check the number of time steps in the files and read ztcobc
454	!
455	! * Arguments
456	INTEGER, INTENT(in) :: kyyfile, kmmfile
457	! * local variables
458	INTEGER :: istop ! error control
459	INTEGER :: ji ! dummy loop index
460
461	INTEGER :: idvar, id_e, id_w, id_n, id_s ! file identifiers
462	INTEGER, DIMENSION(1) :: itmp
463	CHARACTER(LEN=25) :: cl_vname
464
465	ntobc_a = 0; itobce =0 ; itobcw = 0; itobcn = 0; itobcs = 0
466	! build file name
467	IF(ln_obc_clim) THEN ! revert to old convention for climatological OBC forcing
468	cl_obc_eTS='obceast_TS.nc'
469	cl_obc_wTS='obcwest_TS.nc'
470	cl_obc_nTS='obcnorth_TS.nc'
471	cl_obc_sTS='obcsouth_TS.nc'
472	ELSE ! convention for climatological OBC
473	WRITE(cl_obc_eTS ,'("obc_east_TS_y",i4.4,"m",i2.2,".nc")' ) kyyfile,kmmfile
474	WRITE(cl_obc_wTS ,'("obc_west_TS_y",i4.4,"m",i2.2,".nc")' ) kyyfile,kmmfile
475	WRITE(cl_obc_nTS ,'("obc_north_TS_y",i4.4,"m",i2.2,".nc")' ) kyyfile,kmmfile
476	WRITE(cl_obc_sTS ,'("obc_south_TS_y",i4.4,"m",i2.2,".nc")' ) kyyfile,kmmfile
477	ENDIF
478
479	cl_vname = 'time_counter'
480	IF ( lp_obc_east ) THEN
481	CALL iom_open ( cl_obc_eTS , id_e )
482	idvar = iom_varid( id_e, cl_vname, kdimsz = itmp ); itobce=itmp(1)
483	ENDIF
484	IF ( lp_obc_west ) THEN
485	CALL iom_open ( cl_obc_wTS , id_w )
486	idvar = iom_varid( id_w, cl_vname, kdimsz = itmp ) ; itobcw=itmp(1)
487	ENDIF
488	IF ( lp_obc_north ) THEN
489	CALL iom_open ( cl_obc_nTS , id_n )
490	idvar = iom_varid( id_n, cl_vname, kdimsz = itmp ) ; itobcn=itmp(1)
491	ENDIF
492	IF ( lp_obc_south ) THEN
493	CALL iom_open ( cl_obc_sTS , id_s )
494	idvar = iom_varid( id_s, cl_vname, kdimsz = itmp ) ; itobcs=itmp(1)
495	ENDIF
496
497	itobc = MAX( itobce, itobcw, itobcn, itobcs )
498	istop = 0
499	IF ( lp_obc_east .AND. itobce /= itobc ) istop = istop+1
500	IF ( lp_obc_west .AND. itobcw /= itobc ) istop = istop+1
501	IF ( lp_obc_north .AND. itobcn /= itobc ) istop = istop+1
502	IF ( lp_obc_south .AND. itobcs /= itobc ) istop = istop+1
503	nstop = nstop + istop
504
505	IF ( istop /= 0 ) THEN
506	WRITE(ctmp1,*) ' east, west, north, south: ', itobce, itobcw, itobcn, itobcs
507	CALL ctl_stop( 'obcdta : all files must have the same number of time steps', ctmp1 )
508	ENDIF
509
510	IF ( itobc == 1 ) THEN
511	IF (lwp) THEN
512	WRITE(numout,*) ' obcdta found one time step only in the OBC files'
513	IF (ln_obc_clim) THEN
514	! OK no problem
515	ELSE
516	ln_obc_clim=.true.
517	WRITE(numout,*) ' we force ln_obc_clim to T'
518	ENDIF
519	ENDIF
520	ELSE
521	IF ( ALLOCATED(ztcobc) ) DEALLOCATE ( ztcobc )
522	ALLOCATE (ztcobc(itobc))
523	DO ji=1,1 ! use a dummy loop to read ztcobc only once
524	IF ( lp_obc_east ) THEN
525	CALL iom_gettime ( id_e, ztcobc, cl_vname ) ; CALL iom_close (id_e) ; EXIT
526	ENDIF
527	IF ( lp_obc_west ) THEN
528	CALL iom_gettime ( id_w, ztcobc, cl_vname ) ; CALL iom_close (id_w) ; EXIT
529	ENDIF
530	IF ( lp_obc_north ) THEN
531	CALL iom_gettime ( id_n, ztcobc, cl_vname ) ; CALL iom_close (id_n) ; EXIT
532	ENDIF
533	IF ( lp_obc_south ) THEN
534	CALL iom_gettime ( id_s, ztcobc, cl_vname ) ; CALL iom_close (id_s) ; EXIT
535	ENDIF
536	END DO
537	rdt_obc = ztcobc(2)-ztcobc(1) ! just an information, not used for any computation
538	IF (lwp) WRITE(numout,*) ' obcdta found', itobc,' time steps in the OBC files'
539	IF (lwp) WRITE(numout,*) ' time step of obc data :', rdt_obc,' days'
540	ENDIF
541	zjcnes = zjcnes - rdt/rday ! trick : zcnes is always incremented by rdt/rday in obc_dta!
542	END SUBROUTINE obc_dta_chktime
543
544	# if defined key_dynspg_ts \|\| defined key_dynspg_exp
545	SUBROUTINE obc_dta_bt( kt, kbt )
546	!!---------------------------------------------------------------------------
547	!! * SUBROUTINE obc_dta *
548	!!
549	!! ** Purpose : time interpolation of barotropic data for time-splitting scheme
550	!! Data at the boundary must be in m2/s
551	!!
552	!! History : 9.0 ! 05-11 (V. garnier) Original code
553	!!---------------------------------------------------------------------------
554	INTEGER, INTENT( in ) :: kt ! ocean time-step index
555	INTEGER, INTENT( in ) :: kbt ! barotropic ocean time-step index
556	!
557	INTEGER :: ji, jj ! dummy loop indices
558	INTEGER :: i15
559	INTEGER :: itobcm, itobcp
560	REAL(wp) :: zxy
561	INTEGER :: isrel ! number of seconds since 1/1/1992
562	!!---------------------------------------------------------------------------
563
564	! 1. First call: check time frames available in files.
565	! -------------------------------------------------------
566
567	IF( kt == nit000 ) THEN
568
569	! 1.1 Barotropic tangential velocities set to zero
570	! -------------------------------------------------
571	IF( lp_obc_east ) vbtfoe(:) = 0.e0
572	IF( lp_obc_west ) vbtfow(:) = 0.e0
573	IF( lp_obc_south ) ubtfos(:) = 0.e0
574	IF( lp_obc_north ) ubtfon(:) = 0.e0
575
576	! 1.2 Sea surface height and normal barotropic velocities set to zero
577	! or initial conditions if nobc_dta == 0
578	! --------------------------------------------------------------------
579
580	IF( lp_obc_east ) THEN
581	! initialisation to zero
582	sshedta(:,:) = 0.e0
583	ubtedta(:,:) = 0.e0
584	vbtedta(:,:) = 0.e0 ! tangential component
585	! ! ================== !
586	IF( nobc_dta == 0 ) THEN ! initial state used !
587	! ! ================== !
588	! Fills sedta, tedta, uedta (global arrays)
589	! Remark: this works for njzoom = 1. Should the definition of ij include njzoom?
590	DO ji = nie0, nie1
591	DO jj = 1, jpj
592	sshedta(jj,1) = sshn(ji+1,jj) * tmask(ji+1,jj,1)
593	END DO
594	END DO
595	ENDIF
596	ENDIF
597
598	IF( lp_obc_west) THEN
599	! initialisation to zero
600	sshwdta(:,:) = 0.e0
601	ubtwdta(:,:) = 0.e0
602	vbtwdta(:,:) = 0.e0 ! tangential component
603	! ! ================== !
604	IF( nobc_dta == 0 ) THEN ! initial state used !
605	! ! ================== !
606	! Fills swdta, twdta, uwdta (global arrays)
607	! Remark: this works for njzoom = 1. Should the definition of ij include njzoom?
608	DO ji = niw0, niw1
609	DO jj = 1, jpj
610	sshwdta(jj,1) = sshn(ji,jj) * tmask(ji,jj,1)
611	END DO
612	END DO
613	ENDIF
614	ENDIF
615
616	IF( lp_obc_north) THEN
617	! initialisation to zero
618	sshndta(:,:) = 0.e0
619	ubtndta(:,:) = 0.e0 ! tangential component
620	vbtndta(:,:) = 0.e0
621	! ! ================== !
622	IF( nobc_dta == 0 ) THEN ! initial state used !
623	! ! ================== !
624	! Fills sndta, tndta, vndta (global arrays)
625	! Remark: this works for njzoom = 1. Should the definition of ij include njzoom?
626	DO jj = njn0, njn1
627	DO ji = 1, jpi
628	sshndta(ji,1) = sshn(ji,jj+1) * tmask(ji,jj+1,1)
629	END DO
630	END DO
631	ENDIF
632	ENDIF
633
634	IF( lp_obc_south) THEN
635	! initialisation to zero
636	sshsdta(:,:) = 0.e0
637	ubtsdta(:,:) = 0.e0 ! tangential component
638	vbtsdta(:,:) = 0.e0
639	! ! ================== !
640	IF( nobc_dta == 0 ) THEN ! initial state used !
641	! ! ================== !
642	! Fills ssdta, tsdta, vsdta (global arrays)
643	! Remark: this works for njzoom = 1. Should the definition of ij include njzoom?
644	DO jj = njs0, njs1
645	DO ji = 1, jpi
646	sshsdta(ji,1) = sshn(ji,jj) * tmask(ji,jj,1)
647	END DO
648	END DO
649	ENDIF
650	ENDIF
651
652	IF( nobc_dta == 0 ) CALL obc_depth_average(1) ! depth averaged velocity from the OBC depth-dependent frames
653
654	ENDIF ! END kt == nit000
655
656	!!------------------------------------------------------------------------------------
657	! 2. Initialize the time we are at. Does this every time the routine is called,
658	! excepted when nobc_dta = 0
659	!
660
661	! 3. Call at every time step : Linear interpolation of BCs to current time step
662	! ----------------------------------------------------------------------
663
664	IF( lk_dynspg_ts ) THEN
665	isrel = (kt-1)rdt + kbt(rdt/REAL(nn_baro,wp))
666	ELSE IF( lk_dynspg_exp ) THEN
667	isrel=kt*rdt
668	ENDIF
669
670	itobcm = nt_b
671	itobcp = nt_a
672	IF( itobc == 1 .OR. nobc_dta == 0 ) THEN
673	zxy = 0.e0
674	itobcm = 1
675	itobcp = 1
676	ELSE IF( itobc == 12 ) THEN
677	i15 = nday / 16
678	zxy = FLOAT( nday + 15 - 30 * i15 ) / 30.
679	ELSE
680	zxy = (zjcnes_obc(nt_a)-FLOAT(isrel)) / (zjcnes_obc(nt_a)-zjcnes_obc(nt_b))
681	IF( zxy < 0. ) THEN ! case of extrapolation, switch to old time frames
682	itobcm = nt_m
683	itobcp = nt_b
684	zxy = (zjcnes_obc(nt_b)-FLOAT(isrel)) / (zjcnes_obc(nt_b)-zjcnes_obc(nt_m))
685	ENDIF
686	ENDIF
687
688	IF( lp_obc_east ) THEN ! fills sshfoe, ubtfoe (local to each processor)
689	DO jj = 1, jpj
690	sshfoe(jj) = zxy * sshedta(jj,itobcp) + (1.-zxy) * sshedta(jj,itobcm)
691	ubtfoe(jj) = zxy * ubtedta(jj,itobcp) + (1.-zxy) * ubtedta(jj,itobcm)
692	vbtfoe(jj) = zxy * vbtedta(jj,itobcp) + (1.-zxy) * vbtedta(jj,itobcm)
693	END DO
694	ENDIF
695
696	IF( lp_obc_west) THEN ! fills sshfow, ubtfow (local to each processor)
697	DO jj = 1, jpj
698	sshfow(jj) = zxy * sshwdta(jj,itobcp) + (1.-zxy) * sshwdta(jj,itobcm)
699	ubtfow(jj) = zxy * ubtwdta(jj,itobcp) + (1.-zxy) * ubtwdta(jj,itobcm)
700	vbtfow(jj) = zxy * vbtwdta(jj,itobcp) + (1.-zxy) * vbtwdta(jj,itobcm)
701	END DO
702	ENDIF
703
704	IF( lp_obc_north) THEN ! fills sshfon, vbtfon (local to each processor)
705	DO ji = 1, jpi
706	sshfon(ji) = zxy * sshndta(ji,itobcp) + (1.-zxy) * sshndta(ji,itobcm)
707	ubtfon(ji) = zxy * ubtndta(ji,itobcp) + (1.-zxy) * ubtndta(ji,itobcm)
708	vbtfon(ji) = zxy * vbtndta(ji,itobcp) + (1.-zxy) * vbtndta(ji,itobcm)
709	END DO
710	ENDIF
711
712	IF( lp_obc_south) THEN ! fills sshfos, vbtfos (local to each processor)
713	DO ji = 1, jpi
714	sshfos(ji) = zxy * sshsdta(ji,itobcp) + (1.-zxy) * sshsdta(ji,itobcm)
715	ubtfos(ji) = zxy * ubtsdta(ji,itobcp) + (1.-zxy) * ubtsdta(ji,itobcm)
716	vbtfos(ji) = zxy * vbtsdta(ji,itobcp) + (1.-zxy) * vbtsdta(ji,itobcm)
717	END DO
718	ENDIF
719
720	END SUBROUTINE obc_dta_bt
721
722	# else
723	!!-----------------------------------------------------------------------------
724	!! Default option
725	!!-----------------------------------------------------------------------------
726	SUBROUTINE obc_dta_bt ( kt, kbt ) ! Empty routine
727	!! * Arguments
728	INTEGER,INTENT(in) :: kt
729	INTEGER, INTENT( in ) :: kbt ! barotropic ocean time-step index
730	WRITE(,) 'obc_dta_bt: You should not have seen this print! error?', kt
731	WRITE(,) 'obc_dta_bt: You should not have seen this print! error?', kbt
732	END SUBROUTINE obc_dta_bt
733	# endif
734
735	SUBROUTINE obc_read (kt, nt_x, ntobc_x, iyy, imm)
736	!!-------------------------------------------------------------------------
737	!! * ROUTINE obc_read *
738	!!
739	!! ** Purpose : Read the boundary data in files identified by iyy and imm
740	!! According to the validated open boundaries, return the
741	!! following arrays :
742	!! sedta, tedta : East OBC salinity and temperature
743	!! uedta, vedta : " " u and v velocity component
744	!!
745	!! swdta, twdta : West OBC salinity and temperature
746	!! uwdta, vwdta : " " u and v velocity component
747	!!
748	!! sndta, tndta : North OBC salinity and temperature
749	!! undta, vndta : " " u and v velocity component
750	!!
751	!! ssdta, tsdta : South OBC salinity and temperature
752	!! usdta, vsdta : " " u and v velocity component
753	!!
754	!! ** Method : These fields are read in the record ntobc_x of the files.
755	!! The number of records is already known. If ntobc_x is greater
756	!! than the number of record, this routine will look for next file,
757	!! updating the indices (case of inter-annual obcs) or loop at the
758	!! begining in case of climatological file (ln_obc_clim = true ).
759	!! -------------------------------------------------------------------------
760	!! History: ! 2005 ( P. Mathiot, C. Langlais ) Original code
761	!! ! 2008 ( J,M, Molines ) Use IOM and cleaning
762	!!--------------------------------------------------------------------------
763
764	! * Arguments
765	INTEGER, INTENT( in ) :: kt, nt_x
766	INTEGER, INTENT( inout ) :: ntobc_x , iyy, imm ! yes ! inout !
767
768	! * Local variables
769	CHARACTER (len=40) :: & ! file names
770	cl_obc_eTS , cl_obc_eU, cl_obc_eV,&
771	cl_obc_wTS , cl_obc_wU, cl_obc_wV,&
772	cl_obc_nTS , cl_obc_nU, cl_obc_nV,&
773	cl_obc_sTS , cl_obc_sU, cl_obc_sV
774
775	INTEGER :: ikprint
776	REAL(wp) :: zmin, zmax ! control of boundary values
777
778	!IOM stuff
779	INTEGER :: id_e, id_w, id_n, id_s
780	INTEGER, DIMENSION(2) :: istart, icount
781
782	!--------------------------------------------------------------------------
783	IF ( ntobc_x > itobc ) THEN
784	IF (ln_obc_clim) THEN ! just loop on the same file
785	ntobc_x = 1
786	ELSE
787	! need to change file : it is always for an 'after' data
788	IF ( cffile == 'annual' ) THEN ! go to next year file
789	iyy = iyy + 1
790	ELSE IF ( cffile =='monthly' ) THEN ! go to next month file
791	imm = imm + 1
792	IF ( imm == 13 ) THEN
793	imm = 1 ; iyy = iyy + 1
794	ENDIF
795	ELSE
796	ctmp1='obcread : this type of obc file is not supported :( '
797	ctmp2=TRIM(cffile)
798	CALL ctl_stop (ctmp1, ctmp2)
799	! cffile should be either annual or monthly ...
800	ENDIF
801	! as the file is changed, need to update itobc etc ...
802	CALL obc_dta_chktime (iyy,imm)
803	ntobc_x = nrecbef() + 1 ! remember : this case occur for an after data
804	ENDIF
805	ENDIF
806
807	IF( lp_obc_east ) THEN
808	! ... Read datafile and set temperature, salinity and normal velocity
809	! ... initialise the sedta, tedta, uedta arrays
810	IF(ln_obc_clim) THEN ! revert to old convention for climatological OBC forcing
811	cl_obc_eTS='obceast_TS.nc'
812	cl_obc_eU ='obceast_U.nc'
813	cl_obc_eV ='obceast_V.nc'
814	ELSE ! convention for climatological OBC
815	WRITE(cl_obc_eTS ,'("obc_east_TS_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
816	WRITE(cl_obc_eU ,'("obc_east_U_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
817	WRITE(cl_obc_eV ,'("obc_east_V_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
818	ENDIF
819	! JMM this may change depending on the obc data format ...
820	istart(:)=(/nje0+njmpp-1,1/) ; icount(:)=(/nje1-nje0 +1,jpk/)
821	IF (lwp) WRITE(numout,*) 'read data in :', TRIM(cl_obc_eTS)
822	IF (nje1 >= nje0 ) THEN
823	CALL iom_open ( cl_obc_eTS , id_e )
824	CALL iom_get ( id_e, jpdom_unknown, 'votemper', tedta(nje0:nje1,:,nt_x), &
825	& ktime=ntobc_x , kstart=istart, kcount= icount )
826	CALL iom_get ( id_e, jpdom_unknown, 'vosaline', sedta(nje0:nje1,:,nt_x), &
827	& ktime=ntobc_x , kstart=istart, kcount= icount )
828	# if defined key_dynspg_ts \|\| defined key_dynspg_exp
829	CALL iom_get ( id_e, jpdom_unknown, 'vossurfh', sshedta(nje0:nje1,nt_x), &
830	& ktime=ntobc_x , kstart=istart, kcount= icount )
831	# endif
832	CALL iom_close (id_e)
833	!
834	CALL iom_open ( cl_obc_eU , id_e )
835	CALL iom_get ( id_e, jpdom_unknown, 'vozocrtx', uedta(nje0:nje1,:,nt_x), &
836	& ktime=ntobc_x , kstart=istart, kcount= icount )
837	CALL iom_close ( id_e )
838	!
839	CALL iom_open ( cl_obc_eV , id_e )
840	CALL iom_get ( id_e, jpdom_unknown, 'vomecrty', vedta(nje0:nje1,:,nt_x), &
841	& ktime=ntobc_x , kstart=istart, kcount= icount )
842	CALL iom_close ( id_e )
843
844	! mask the boundary values
845	tedta(:,:,nt_x) = tedta(:,:,nt_x)temsk(:,:) ; sedta(:,:,nt_x) = sedta(:,:,nt_x)temsk(:,:)
846	uedta(:,:,nt_x) = uedta(:,:,nt_x)uemsk(:,:) ; vedta(:,:,nt_x) = vedta(:,:,nt_x)vemsk(:,:)
847
848	! check any outliers
849	zmin=MINVAL( sedta(:,:,nt_x), mask=ltemsk ) ; zmax=MAXVAL(sedta(:,:,nt_x), mask=ltemsk)
850	IF ( zmin < 5 .OR. zmax > 50) THEN
851	CALL ctl_stop('Error in sedta',' routine obcdta')
852	ENDIF
853	zmin=MINVAL( tedta(:,:,nt_x), mask=ltemsk ) ; zmax=MAXVAL(tedta(:,:,nt_x), mask=ltemsk)
854	IF ( zmin < -10. .OR. zmax > 40) THEN
855	CALL ctl_stop('Error in tedta',' routine obcdta')
856	ENDIF
857	zmin=MINVAL( uedta(:,:,nt_x), mask=luemsk ) ; zmax=MAXVAL(uedta(:,:,nt_x), mask=luemsk)
858	IF ( zmin < -5. .OR. zmax > 5.) THEN
859	CALL ctl_stop('Error in uedta',' routine obcdta')
860	ENDIF
861	zmin=MINVAL( vedta(:,:,nt_x), mask=lvemsk ) ; zmax=MAXVAL(vedta(:,:,nt_x), mask=lvemsk)
862	IF ( zmin < -5. .OR. zmax > 5.) THEN
863	CALL ctl_stop('Error in vedta',' routine obcdta')
864	ENDIF
865
866	! Usually printout is done only once at kt = nit000, unless nprint (namelist) > 1
867	IF ( lwp .AND. ( kt == nit000 .OR. nprint /= 0 ) ) THEN
868	WRITE(numout,*)
869	WRITE(numout,*) ' Read East OBC data records ', ntobc_x
870	ikprint = jpj/20 +1
871	WRITE(numout,*) ' Temperature record 1 - printout every 3 level'
872	CALL prihre( tedta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
873	WRITE(numout,*)
874	WRITE(numout,*) ' Salinity record 1 - printout every 3 level'
875	CALL prihre( sedta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
876	WRITE(numout,*)
877	WRITE(numout,*) ' Normal velocity U record 1 - printout every 3 level'
878	CALL prihre( uedta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
879	WRITE(numout,*)
880	WRITE(numout,*) ' Tangential velocity V record 1 - printout every 3 level'
881	CALL prihre( vedta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
882	ENDIF
883	ENDIF
884	ENDIF
885	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
886	IF ( lp_obc_west ) THEN
887	! ... Read datafile and set temperature, salinity and normal velocity
888	! ... initialise the swdta, twdta, uwdta arrays
889	IF (ln_obc_clim) THEN ! revert to old convention for climatological OBC forcing
890	cl_obc_wTS='obcwest_TS.nc'
891	cl_obc_wU ='obcwest_U.nc'
892	cl_obc_wV ='obcwest_V.nc'
893	ELSE ! convention for climatological OBC
894	WRITE(cl_obc_wTS ,'("obc_west_TS_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
895	WRITE(cl_obc_wU ,'("obc_west_U_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
896	WRITE(cl_obc_wV ,'("obc_west_V_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
897	ENDIF
898	istart(:)=(/njw0+njmpp-1,1/) ; icount(:)=(/njw1-njw0 +1,jpk/)
899	IF (lwp) WRITE(numout,*) 'read data in :', TRIM(cl_obc_wTS)
900
901	IF ( njw1 >= njw0 ) THEN
902	CALL iom_open ( cl_obc_wTS , id_w )
903	CALL iom_get ( id_w, jpdom_unknown, 'votemper', twdta(njw0:njw1,:,nt_x), &
904	& ktime=ntobc_x , kstart=istart, kcount= icount )
905
906	CALL iom_get ( id_w, jpdom_unknown, 'vosaline', swdta(njw0:njw1,:,nt_x), &
907	& ktime=ntobc_x , kstart=istart, kcount= icount)
908	# if defined key_dynspg_ts \|\| defined key_dynspg_exp
909	CALL iom_get ( id_w, jpdom_unknown, 'vossurfh', sshwdta(njw0:njw1,nt_x), &
910	& ktime=ntobc_x , kstart=istart, kcount= icount )
911	# endif
912	CALL iom_close (id_w)
913	!
914	CALL iom_open ( cl_obc_wU , id_w )
915	CALL iom_get ( id_w, jpdom_unknown, 'vozocrtx', uwdta(njw0:njw1,:,nt_x),&
916	& ktime=ntobc_x , kstart=istart, kcount= icount )
917	CALL iom_close ( id_w )
918	!
919	CALL iom_open ( cl_obc_wV , id_w )
920	CALL iom_get ( id_w, jpdom_unknown, 'vomecrty', vwdta(njw0:njw1,:,nt_x), &
921	& ktime=ntobc_x , kstart=istart, kcount= icount )
922	CALL iom_close ( id_w )
923
924	! mask the boundary values
925	twdta(:,:,nt_x) = twdta(:,:,nt_x)twmsk(:,:) ; swdta(:,:,nt_x) = swdta(:,:,nt_x)twmsk(:,:)
926	uwdta(:,:,nt_x) = uwdta(:,:,nt_x)uwmsk(:,:) ; vwdta(:,:,nt_x) = vwdta(:,:,nt_x)vwmsk(:,:)
927
928	! check any outliers
929	zmin=MINVAL( swdta(:,:,nt_x), mask=ltwmsk ) ; zmax=MAXVAL(swdta(:,:,nt_x), mask=ltwmsk)
930	IF ( zmin < 5 .OR. zmax > 50) THEN
931	CALL ctl_stop('Error in swdta',' routine obcdta')
932	ENDIF
933	zmin=MINVAL( twdta(:,:,nt_x), mask=ltwmsk ) ; zmax=MAXVAL(twdta(:,:,nt_x), mask=ltwmsk)
934	IF ( zmin < -10. .OR. zmax > 40) THEN
935	CALL ctl_stop('Error in twdta',' routine obcdta')
936	ENDIF
937	zmin=MINVAL( uwdta(:,:,nt_x), mask=luwmsk ) ; zmax=MAXVAL(uwdta(:,:,nt_x), mask=luwmsk)
938	IF ( zmin < -5. .OR. zmax > 5.) THEN
939	CALL ctl_stop('Error in uwdta',' routine obcdta')
940	ENDIF
941	zmin=MINVAL( vwdta(:,:,nt_x), mask=lvwmsk ) ; zmax=MAXVAL(vwdta(:,:,nt_x), mask=lvwmsk)
942	IF ( zmin < -5. .OR. zmax > 5.) THEN
943	CALL ctl_stop('Error in vwdta',' routine obcdta')
944	ENDIF
945
946
947	IF ( lwp .AND. ( kt == nit000 .OR. nprint /= 0 ) ) THEN
948	WRITE(numout,*)
949	WRITE(numout,*) ' Read West OBC data records ', ntobc_x
950	ikprint = jpj/20 +1
951	WRITE(numout,*) ' Temperature record 1 - printout every 3 level'
952	CALL prihre( twdta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
953	WRITE(numout,*)
954	WRITE(numout,*) ' Salinity record 1 - printout every 3 level'
955	CALL prihre( swdta(:,:,nt_x),jpj,jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
956	WRITE(numout,*)
957	WRITE(numout,*) ' Normal velocity U record 1 - printout every 3 level'
958	CALL prihre( uwdta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
959	WRITE(numout,*)
960	WRITE(numout,*) ' Tangential velocity V record 1 - printout every 3 level'
961	CALL prihre( vwdta(:,:,nt_x), jpj, jpk, 1, jpj, ikprint, jpk, 1, -3, 1., numout )
962	ENDIF
963	END IF
964	ENDIF
965	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
966	IF( lp_obc_north) THEN
967	IF(ln_obc_clim) THEN ! revert to old convention for climatological OBC forcing
968	cl_obc_nTS='obcnorth_TS.nc'
969	cl_obc_nU ='obcnorth_U.nc'
970	cl_obc_nV ='obcnorth_V.nc'
971	ELSE ! convention for climatological OBC
972	WRITE(cl_obc_nTS ,'("obc_north_TS_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
973	WRITE(cl_obc_nV ,'("obc_north_V_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
974	WRITE(cl_obc_nU ,'("obc_north_U_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
975	ENDIF
976	istart(:)=(/nin0+nimpp-1,1/) ; icount(:)=(/nin1-nin0 +1,jpk/)
977	IF (lwp) WRITE(numout,*) 'read data in :', TRIM(cl_obc_nTS)
978	IF ( nin1 >= nin0 ) THEN
979	CALL iom_open ( cl_obc_nTS , id_n )
980	CALL iom_get ( id_n, jpdom_unknown, 'votemper', tndta(nin0:nin1,:,nt_x), &
981	& ktime=ntobc_x , kstart=istart, kcount= icount )
982	CALL iom_get ( id_n, jpdom_unknown, 'vosaline', sndta(nin0:nin1,:,nt_x), &
983	& ktime=ntobc_x , kstart=istart, kcount= icount )
984	# if defined key_dynspg_ts \|\| defined key_dynspg_exp
985	CALL iom_get ( id_n, jpdom_unknown, 'vossurfh', sshndta(nin0:nin1,nt_x), &
986	& ktime=ntobc_x , kstart=istart, kcount= icount )
987	# endif
988	CALL iom_close (id_n)
989	!
990	CALL iom_open ( cl_obc_nU , id_n )
991	CALL iom_get ( id_n, jpdom_unknown, 'vozocrtx', undta(nin0:nin1,:,nt_x), &
992	& ktime=ntobc_x , kstart=istart, kcount= icount )
993	CALL iom_close ( id_n )
994	!
995	CALL iom_open ( cl_obc_nV , id_n )
996	CALL iom_get ( id_n, jpdom_unknown, 'vomecrty', vndta(nin0:nin1,:,nt_x), &
997	& ktime=ntobc_x , kstart=istart, kcount= icount )
998	CALL iom_close ( id_n )
999
1000	! mask the boundary values
1001	tndta(:,:,nt_x) = tndta(:,:,nt_x)tnmsk(:,:) ; sndta(:,:,nt_x) = sndta(:,:,nt_x)tnmsk(:,:)
1002	undta(:,:,nt_x) = undta(:,:,nt_x)unmsk(:,:) ; vndta(:,:,nt_x) = vndta(:,:,nt_x)vnmsk(:,:)
1003
1004	! check any outliers
1005	zmin=MINVAL( sndta(:,:,nt_x), mask=ltnmsk ) ; zmax=MAXVAL(sndta(:,:,nt_x), mask=ltnmsk)
1006	IF ( zmin < 5 .OR. zmax > 50) THEN
1007	CALL ctl_stop('Error in sndta',' routine obcdta')
1008	ENDIF
1009	zmin=MINVAL( tndta(:,:,nt_x), mask=ltnmsk ) ; zmax=MAXVAL(tndta(:,:,nt_x), mask=ltnmsk)
1010	IF ( zmin < -10. .OR. zmax > 40) THEN
1011	CALL ctl_stop('Error in tndta',' routine obcdta')
1012	ENDIF
1013	zmin=MINVAL( undta(:,:,nt_x), mask=lunmsk ) ; zmax=MAXVAL(undta(:,:,nt_x), mask=lunmsk)
1014	IF ( zmin < -5. .OR. zmax > 5.) THEN
1015	CALL ctl_stop('Error in undta',' routine obcdta')
1016	ENDIF
1017	zmin=MINVAL( vndta(:,:,nt_x), mask=lvnmsk ) ; zmax=MAXVAL(vndta(:,:,nt_x), mask=lvnmsk)
1018	IF ( zmin < -5. .OR. zmax > 5.) THEN
1019	CALL ctl_stop('Error in vndta',' routine obcdta')
1020	ENDIF
1021
1022	IF ( lwp .AND. ( kt == nit000 .OR. nprint /= 0 ) ) THEN
1023	WRITE(numout,*)
1024	WRITE(numout,*) ' Read North OBC data records ', ntobc_x
1025	ikprint = jpi/20 +1
1026	WRITE(numout,*) ' Temperature record 1 - printout every 3 level'
1027	CALL prihre( tndta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1028	WRITE(numout,*)
1029	WRITE(numout,*) ' Salinity record 1 - printout every 3 level'
1030	CALL prihre( sndta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1031	WRITE(numout,*)
1032	WRITE(numout,*) ' Normal velocity V record 1 - printout every 3 level'
1033	CALL prihre( vndta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1034	WRITE(numout,*)
1035	WRITE(numout,*) ' Tangential velocity U record 1 - printout every 3 level'
1036	CALL prihre( undta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1037	ENDIF
1038	ENDIF
1039	ENDIF
1040	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1041	IF( lp_obc_south) THEN
1042	IF(ln_obc_clim) THEN ! revert to old convention for climatological OBC forcing
1043	cl_obc_sTS='obcsouth_TS.nc'
1044	cl_obc_sU ='obcsouth_U.nc'
1045	cl_obc_sV ='obcsouth_V.nc'
1046	ELSE ! convention for climatological OBC
1047	WRITE(cl_obc_sTS ,'("obc_south_TS_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
1048	WRITE(cl_obc_sV ,'("obc_south_V_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
1049	WRITE(cl_obc_sU ,'("obc_south_U_y" ,i4.4,"m",i2.2,".nc")' ) iyy,imm
1050	ENDIF
1051	istart(:)=(/nis0+nimpp-1,1/) ; icount(:)=(/nis1-nis0 +1,jpk/)
1052	IF (lwp) WRITE(numout,*) 'read data in :', TRIM(cl_obc_sTS)
1053	IF ( nis1 >= nis0 ) THEN
1054	CALL iom_open ( cl_obc_sTS , id_s )
1055	CALL iom_get ( id_s, jpdom_unknown, 'votemper', tsdta(nis0:nis1,:,nt_x), &
1056	& ktime=ntobc_x , kstart=istart, kcount= icount )
1057	CALL iom_get ( id_s, jpdom_unknown, 'vosaline', ssdta(nis0:nis1,:,nt_x), &
1058	& ktime=ntobc_x , kstart=istart, kcount= icount )
1059	# if defined key_dynspg_ts \|\| defined key_dynspg_exp
1060	CALL iom_get ( id_s, jpdom_unknown, 'vossurfh', sshsdta(nis0:nis1,nt_x), &
1061	& ktime=ntobc_x , kstart=istart, kcount= icount )
1062	# endif
1063	CALL iom_close (id_s)
1064	!
1065	CALL iom_open ( cl_obc_sU , id_s )
1066	CALL iom_get ( id_s, jpdom_unknown, 'vozocrtx', usdta(nis0:nis1,:,nt_x), &
1067	& ktime=ntobc_x , kstart=istart, kcount= icount )
1068	CALL iom_close ( id_s )
1069	!
1070	CALL iom_open ( cl_obc_sV , id_s )
1071	CALL iom_get ( id_s, jpdom_unknown, 'vomecrty', vsdta(nis0:nis1,:,nt_x), &
1072	& ktime=ntobc_x , kstart=istart, kcount= icount )
1073	CALL iom_close ( id_s )
1074
1075	! mask the boundary values
1076	tsdta(:,:,nt_x) = tsdta(:,:,nt_x)tsmsk(:,:) ; ssdta(:,:,nt_x) = ssdta(:,:,nt_x)tsmsk(:,:)
1077	usdta(:,:,nt_x) = usdta(:,:,nt_x)usmsk(:,:) ; vsdta(:,:,nt_x) = vsdta(:,:,nt_x)vsmsk(:,:)
1078
1079	! check any outliers
1080	zmin=MINVAL( ssdta(:,:,nt_x), mask=ltsmsk ) ; zmax=MAXVAL(ssdta(:,:,nt_x), mask=ltsmsk)
1081	IF ( zmin < 5 .OR. zmax > 50) THEN
1082	CALL ctl_stop('Error in ssdta',' routine obcdta')
1083	ENDIF
1084	zmin=MINVAL( tsdta(:,:,nt_x), mask=ltsmsk ) ; zmax=MAXVAL(tsdta(:,:,nt_x), mask=ltsmsk)
1085	IF ( zmin < -10. .OR. zmax > 40) THEN
1086	CALL ctl_stop('Error in tsdta',' routine obcdta')
1087	ENDIF
1088	zmin=MINVAL( usdta(:,:,nt_x), mask=lusmsk ) ; zmax=MAXVAL(usdta(:,:,nt_x), mask=lusmsk)
1089	IF ( zmin < -5. .OR. zmax > 5.) THEN
1090	CALL ctl_stop('Error in usdta',' routine obcdta')
1091	ENDIF
1092	zmin=MINVAL( vsdta(:,:,nt_x), mask=lvsmsk ) ; zmax=MAXVAL(vsdta(:,:,nt_x), mask=lvsmsk)
1093	IF ( zmin < -5. .OR. zmax > 5.) THEN
1094	CALL ctl_stop('Error in vsdta',' routine obcdta')
1095	ENDIF
1096
1097	IF ( lwp .AND. ( kt == nit000 .OR. nprint /= 0 ) ) THEN
1098	WRITE(numout,*)
1099	WRITE(numout,*) ' Read South OBC data records ', ntobc_x
1100	ikprint = jpi/20 +1
1101	WRITE(numout,*) ' Temperature record 1 - printout every 3 level'
1102	CALL prihre( tsdta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1103	WRITE(numout,*)
1104	WRITE(numout,*) ' Salinity record 1 - printout every 3 level'
1105	CALL prihre( ssdta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1106	WRITE(numout,*)
1107	WRITE(numout,*) ' Normal velocity V record 1 - printout every 3 level'
1108	CALL prihre( vsdta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1109	WRITE(numout,*)
1110	WRITE(numout,*) ' Tangential velocity U record 1 - printout every 3 level'
1111	CALL prihre( usdta(:,:,nt_x), jpi, jpk, 1, jpi, ikprint, jpk, 1, -3, 1., numout )
1112	ENDIF
1113	ENDIF
1114	ENDIF
1115
1116	# if defined key_dynspg_ts \|\| defined key_dynspg_exp
1117	CALL obc_depth_average(nt_x) ! computation of depth-averaged velocity
1118	# endif
1119
1120	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1121	END SUBROUTINE obc_read
1122
1123
1124	INTEGER FUNCTION nrecbef()
1125	!!-----------------------------------------------------------------------
1126	!! * FUNCTION nrecbef *
1127	!!
1128	!! Purpose : - provide the before record number in files, with respect to zjcnes
1129	!!
1130	!! History : 2008-04 : ( J.M. Molines ) Original code
1131	!!-----------------------------------------------------------------------
1132
1133	INTEGER :: it , idum
1134
1135	idum = itobc
1136	DO it =1, itobc
1137	IF ( ztcobc(it) > zjcnes ) THEN ; idum = it - 1 ; EXIT ; ENDIF
1138	ENDDO
1139	! idum can be 0 (climato, before first record)
1140	IF ( idum == 0 ) THEN
1141	IF ( ln_obc_clim ) THEN
1142	idum = itobc
1143	ELSE
1144	ctmp1='obc_dta: find ntobc == 0 for non climatological file '
1145	ctmp2='consider adding a first record in your data file '
1146	CALL ctl_stop(ctmp1, ctmp2)
1147	ENDIF
1148	ENDIF
1149	! idum can be itobc ( zjcnes > ztcobc (itobc) )
1150	! This is not a problem ...
1151	nrecbef = idum
1152
1153	END FUNCTION nrecbef
1154
1155
1156	SUBROUTINE obc_depth_average(nt_x)
1157	!!-----------------------------------------------------------------------
1158	!! * ROUTINE obc_depth_average *
1159	!!
1160	!! Purpose : - compute the depth-averaged velocity from depth-dependent OBC frames
1161	!!
1162	!! History : 2009-01 : ( Fred Dupont ) Original code
1163	!!-----------------------------------------------------------------------
1164
1165	! * Arguments
1166	INTEGER, INTENT( in ) :: nt_x
1167
1168	! * Local variables
1169	INTEGER :: ji, jj, jk
1170
1171
1172	IF( lp_obc_east ) THEN
1173	! initialisation to zero
1174	ubtedta(:,nt_x) = 0.e0
1175	vbtedta(:,nt_x) = 0.e0
1176	DO ji = nie0, nie1
1177	DO jj = 1, jpj
1178	DO jk = 1, jpkm1
1179	ubtedta(jj,nt_x) = ubtedta(jj,nt_x) + uedta(jj,jk,nt_x)*fse3u(ji,jj,jk)
1180	vbtedta(jj,nt_x) = vbtedta(jj,nt_x) + vedta(jj,jk,nt_x)*fse3v(ji+1,jj,jk)
1181	END DO
1182	END DO
1183	END DO
1184	ENDIF
1185
1186	IF( lp_obc_west) THEN
1187	! initialisation to zero
1188	ubtwdta(:,nt_x) = 0.e0
1189	vbtwdta(:,nt_x) = 0.e0
1190	DO ji = niw0, niw1
1191	DO jj = 1, jpj
1192	DO jk = 1, jpkm1
1193	ubtwdta(jj,nt_x) = ubtwdta(jj,nt_x) + uwdta(jj,jk,nt_x)*fse3u(ji,jj,jk)
1194	vbtwdta(jj,nt_x) = vbtwdta(jj,nt_x) + vwdta(jj,jk,nt_x)*fse3v(ji,jj,jk)
1195	END DO
1196	END DO
1197	END DO
1198	ENDIF
1199
1200	IF( lp_obc_north) THEN
1201	! initialisation to zero
1202	ubtndta(:,nt_x) = 0.e0
1203	vbtndta(:,nt_x) = 0.e0
1204	DO jj = njn0, njn1
1205	DO ji = 1, jpi
1206	DO jk = 1, jpkm1
1207	ubtndta(ji,nt_x) = ubtndta(ji,nt_x) + undta(ji,jk,nt_x)*fse3u(ji,jj+1,jk)
1208	vbtndta(ji,nt_x) = vbtndta(ji,nt_x) + vndta(ji,jk,nt_x)*fse3v(ji,jj,jk)
1209	END DO
1210	END DO
1211	END DO
1212	ENDIF
1213
1214	IF( lp_obc_south) THEN
1215	! initialisation to zero
1216	ubtsdta(:,nt_x) = 0.e0
1217	vbtsdta(:,nt_x) = 0.e0
1218	DO jj = njs0, njs1
1219	DO ji = nis0, nis1
1220	DO jk = 1, jpkm1
1221	ubtsdta(ji,nt_x) = ubtsdta(ji,nt_x) + usdta(ji,jk,nt_x)*fse3u(ji,jj,jk)
1222	vbtsdta(ji,nt_x) = vbtsdta(ji,nt_x) + vsdta(ji,jk,nt_x)*fse3v(ji,jj,jk)
1223	END DO
1224	END DO
1225	END DO
1226	ENDIF
1227
1228	END SUBROUTINE obc_depth_average
1229
1230	#else
1231	!!------------------------------------------------------------------------------
1232	!! default option: Dummy module NO Open Boundary Conditions
1233	!!------------------------------------------------------------------------------
1234	CONTAINS
1235	SUBROUTINE obc_dta( kt ) ! Dummy routine
1236	INTEGER, INTENT (in) :: kt
1237	WRITE(,) 'obc_dta: You should not have seen this print! error?', kt
1238	END SUBROUTINE obc_dta
1239	!!-----------------------------------------------------------------------------
1240	!! Default option
1241	!!-----------------------------------------------------------------------------
1242	SUBROUTINE obc_dta_bt ( kt, kbt ) ! Empty routine
1243	INTEGER,INTENT(in) :: kt
1244	INTEGER, INTENT( in ) :: kbt ! barotropic ocean time-step index
1245	WRITE(,) 'obc_dta_bt: You should not have seen this print! error?', kt
1246	WRITE(,) 'obc_dta_bt: You should not have seen this print! error?', kbt
1247	END SUBROUTINE obc_dta_bt
1248	#endif
1249	!!==============================================================================
1250	END MODULE obcdta

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