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p4zsbc.F90 in branches/2015/nemo_v3_6_STABLE/NEMOGCM/NEMO/TOP_SRC/PISCES/P4Z – NEMO

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source: branches/2015/nemo_v3_6_STABLE/NEMOGCM/NEMO/TOP_SRC/PISCES/P4Z/p4zsbc.F90 @ 9240

Last change on this file since 9240 was 9240, checked in by cetlod, 6 years ago
v3.6 stable : bugfix on PISCES, see ticket #2003
Property svn:keywords set to `Id`
File size: 24.2 KB

Line
1	MODULE p4zsbc
2	!!======================================================================
3	!! * MODULE p4sbc *
4	!! TOP : PISCES surface boundary conditions of external inputs of nutrients
5	!!======================================================================
6	!! History : 3.5 ! 2012-07 (O. Aumont, C. Ethe) Original code
7	!!----------------------------------------------------------------------
8	#if defined key_pisces
9	!!----------------------------------------------------------------------
10	!! 'key_pisces' PISCES bio-model
11	!!----------------------------------------------------------------------
12	!! p4z_sbc : Read and interpolate time-varying nutrients fluxes
13	!! p4z_sbc_init : Initialization of p4z_sbc
14	!!----------------------------------------------------------------------
15	USE oce_trc ! shared variables between ocean and passive tracers
16	USE trc ! passive tracers common variables
17	USE sms_pisces ! PISCES Source Minus Sink variables
18	USE iom ! I/O manager
19	USE fldread ! time interpolation
20
21	IMPLICIT NONE
22	PRIVATE
23
24	PUBLIC p4z_sbc
25	PUBLIC p4z_sbc_init
26
27	!! * Shared module variables
28	LOGICAL , PUBLIC :: ln_dust !: boolean for dust input from the atmosphere
29	LOGICAL , PUBLIC :: ln_solub !: boolean for variable solubility of atmospheric iron
30	LOGICAL , PUBLIC :: ln_river !: boolean for river input of nutrients
31	LOGICAL , PUBLIC :: ln_ndepo !: boolean for atmospheric deposition of N
32	LOGICAL , PUBLIC :: ln_ironsed !: boolean for Fe input from sediments
33	LOGICAL , PUBLIC :: ln_hydrofe !: boolean for Fe input from hydrothermal vents
34	LOGICAL , PUBLIC :: ln_ironice !: boolean for Fe input from sea ice
35	REAL(wp), PUBLIC :: sedfeinput !: Coastal release of Iron
36	REAL(wp), PUBLIC :: dustsolub !: Solubility of the dust
37	REAL(wp), PUBLIC :: mfrac !: Mineral Content of the dust
38	REAL(wp), PUBLIC :: icefeinput !: Iron concentration in sea ice
39	REAL(wp), PUBLIC :: wdust !: Sinking speed of the dust
40	REAL(wp), PUBLIC :: nitrfix !: Nitrogen fixation rate
41	REAL(wp), PUBLIC :: diazolight !: Nitrogen fixation sensitivty to light
42	REAL(wp), PUBLIC :: concfediaz !: Fe half-saturation Cste for diazotrophs
43	REAL(wp) :: hratio !: Fe:3He ratio assumed for vent iron supply
44
45	LOGICAL , PUBLIC :: ll_sbc
46
47	!! * Module variables
48	LOGICAL :: ll_solub
49
50	INTEGER , PARAMETER :: jpriv = 7 !: Maximum number of river input fields
51	INTEGER , PARAMETER :: jr_dic = 1 !: index of dissolved inorganic carbon
52	INTEGER , PARAMETER :: jr_doc = 2 !: index of dissolved organic carbon
53	INTEGER , PARAMETER :: jr_din = 3 !: index of dissolved inorganic nitrogen
54	INTEGER , PARAMETER :: jr_don = 4 !: index of dissolved organic nitrogen
55	INTEGER , PARAMETER :: jr_dip = 5 !: index of dissolved inorganic phosporus
56	INTEGER , PARAMETER :: jr_dop = 6 !: index of dissolved organic phosphorus
57	INTEGER , PARAMETER :: jr_dsi = 7 !: index of dissolved silicate
58
59
60	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_dust ! structure of input dust
61	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_solub ! structure of input dust
62	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_river ! structure of input riverdic
63	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_ndepo ! structure of input nitrogen deposition
64	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_ironsed ! structure of input iron from sediment
65	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_hydrofe ! structure of input iron from hydrothermal vents
66
67	INTEGER , PARAMETER :: nbtimes = 365 !: maximum number of times record in a file
68	INTEGER :: ntimes_dust, ntimes_riv, ntimes_ndep ! number of time steps in a file
69	INTEGER :: ntimes_solub, ntimes_hydro ! number of time steps in a file
70
71	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: dust, solub !: dust fields
72	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rivdic, rivalk !: river input fields
73	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rivdin, rivdip !: river input fields
74	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rivdsi !: river input fields
75	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: nitdep !: atmospheric N deposition
76	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ironsed !: Coastal supply of iron
77	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: hydrofe !: Hydrothermal vent supply of iron
78
79	REAL(wp), PUBLIC :: sumdepsi, rivalkinput, rivdicinput, nitdepinput
80	REAL(wp), PUBLIC :: rivdininput, rivdipinput, rivdsiinput
81
82
83	!!* Substitution
84	# include "top_substitute.h90"
85	!!----------------------------------------------------------------------
86	!! NEMO/TOP 3.3 , NEMO Consortium (2010)
87	!! $Id$
88	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
89	!!----------------------------------------------------------------------
90
91	CONTAINS
92
93	SUBROUTINE p4z_sbc( kt )
94	!!----------------------------------------------------------------------
95	!! * routine p4z_sbc *
96	!!
97	!! ** purpose : read and interpolate the external sources of nutrients
98	!!
99	!! ** method : read the files and interpolate the appropriate variables
100	!!
101	!! ** input : external netcdf files
102	!!
103	!!----------------------------------------------------------------------
104	!! * arguments
105	INTEGER, INTENT( in ) :: kt ! ocean time step
106
107	!! * local declarations
108	INTEGER :: ji,jj
109	REAL(wp) :: zcoef, zyyss
110	!!---------------------------------------------------------------------
111	!
112	IF( nn_timing == 1 ) CALL timing_start('p4z_sbc')
113
114	!
115	! Compute dust at nit000 or only if there is more than 1 time record in dust file
116	IF( ln_dust ) THEN
117	IF( kt == nit000 .OR. ( kt /= nit000 .AND. ntimes_dust > 1 ) ) THEN
118	CALL fld_read( kt, 1, sf_dust )
119	IF( nn_ice_tr == -1 .AND. .NOT. ln_ironice ) THEN
120	dust(:,:) = MAX( rtrn, sf_dust(1)%fnow(:,:,1) )
121	ELSE
122	dust(:,:) = MAX( rtrn, sf_dust(1)%fnow(:,:,1) ) * ( 1.0 - fr_i(:,:) )
123	ENDIF
124	ENDIF
125	ENDIF
126
127	IF( ll_solub ) THEN
128	IF( kt == nit000 .OR. ( kt /= nit000 .AND. ntimes_solub > 1 ) ) THEN
129	CALL fld_read( kt, 1, sf_solub )
130	solub(:,:) = sf_solub(1)%fnow(:,:,1)
131	ENDIF
132	ENDIF
133
134	! N/P and Si releases due to coastal rivers
135	! Compute river at nit000 or only if there is more than 1 time record in river file
136	! -----------------------------------------
137	IF( ln_river ) THEN
138	IF( kt == nit000 .OR. ( kt /= nit000 .AND. ntimes_riv > 1 ) ) THEN
139	CALL fld_read( kt, 1, sf_river )
140	DO jj = 1, jpj
141	DO ji = 1, jpi
142	zcoef = ryyss * e1e2t(ji,jj) * h_rnf(ji,jj)
143	rivalk(ji,jj) = sf_river(jr_dic)%fnow(ji,jj,1) &
144	& * 1.E3 / ( 12. * zcoef + rtrn )
145	rivdic(ji,jj) = ( sf_river(jr_dic)%fnow(ji,jj,1) + sf_river(jr_doc)%fnow(ji,jj,1) ) &
146	& * 1.E3 / ( 12. * zcoef + rtrn )
147	rivdin(ji,jj) = ( sf_river(jr_din)%fnow(ji,jj,1) + sf_river(jr_don)%fnow(ji,jj,1) ) &
148	& * 1.E3 / rno3 / ( 14. * zcoef + rtrn )
149	rivdip(ji,jj) = ( sf_river(jr_dip)%fnow(ji,jj,1) + sf_river(jr_dop)%fnow(ji,jj,1) ) &
150	& * 1.E3 / po4r / ( 31. * zcoef + rtrn )
151	rivdsi(ji,jj) = sf_river(jr_dsi)%fnow(ji,jj,1) &
152	& * 1.E3 / ( 28.1 * zcoef + rtrn )
153	END DO
154	END DO
155	ENDIF
156	ENDIF
157
158	! Compute N deposition at nit000 or only if there is more than 1 time record in N deposition file
159	IF( ln_ndepo ) THEN
160	! from kg m-2 s-1 to molC l-1 s-1
161	IF( kt == nit000 .OR. ( kt /= nit000 .AND. ntimes_ndep > 1 ) ) THEN
162	zcoef = 14. * rno3
163	CALL fld_read( kt, 1, sf_ndepo )
164	nitdep(:,:) = MAX( rtrn, sf_ndepo(1)%fnow(:,:,1) ) / zcoef / fse3t(:,:,1)
165	ENDIF
166	IF( lk_vvl ) THEN
167	zcoef = 14. * rno3
168	nitdep(:,:) = MAX ( rtrn, sf_ndepo(1)%fnow(:,:,1) ) / zcoef / fse3t(:,:,1)
169	ENDIF
170	ENDIF
171	!
172	IF( nn_timing == 1 ) CALL timing_stop('p4z_sbc')
173	!
174	END SUBROUTINE p4z_sbc
175
176	SUBROUTINE p4z_sbc_init
177
178	!!----------------------------------------------------------------------
179	!! * routine p4z_sbc_init *
180	!!
181	!! ** purpose : initialization of the external sources of nutrients
182	!!
183	!! ** method : read the files and compute the budget
184	!! called at the first timestep (nittrc000)
185	!!
186	!! ** input : external netcdf files
187	!!
188	!!----------------------------------------------------------------------
189	!
190	INTEGER :: ji, jj, jk, jm, ifpr
191	INTEGER :: ii0, ii1, ij0, ij1
192	INTEGER :: numdust, numsolub, numriv, numiron, numdepo, numhydro
193	INTEGER :: ierr, ierr1, ierr2, ierr3
194	INTEGER :: ios ! Local integer output status for namelist read
195	INTEGER :: ik50 ! last level where depth less than 50 m
196	INTEGER :: isrow ! index for ORCA1 starting row
197	REAL(wp) :: zexpide, zdenitide, zmaskt
198	REAL(wp) :: ztimes_dust, ztimes_riv, ztimes_ndep
199	REAL(wp), DIMENSION(nbtimes) :: zsteps ! times records
200	REAL(wp), DIMENSION(:), ALLOCATABLE :: rivinput
201	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: zriver, zcmask
202	!
203	CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files
204	TYPE(FLD_N), DIMENSION(jpriv) :: slf_river ! array of namelist informations on the fields to read
205	TYPE(FLD_N) :: sn_dust, sn_solub, sn_ndepo, sn_ironsed, sn_hydrofe ! informations about the fields to be read
206	TYPE(FLD_N) :: sn_riverdoc, sn_riverdic, sn_riverdsi ! informations about the fields to be read
207	TYPE(FLD_N) :: sn_riverdin, sn_riverdon, sn_riverdip, sn_riverdop
208	!
209	NAMELIST/nampissbc/cn_dir, sn_dust, sn_solub, sn_riverdic, sn_riverdoc, sn_riverdin, sn_riverdon, &
210	& sn_riverdip, sn_riverdop, sn_riverdsi, sn_ndepo, sn_ironsed, sn_hydrofe, &
211	& ln_dust, ln_solub, ln_river, ln_ndepo, ln_ironsed, ln_ironice, ln_hydrofe, &
212	& sedfeinput, dustsolub, icefeinput, wdust, mfrac, nitrfix, diazolight, concfediaz, hratio
213	!!----------------------------------------------------------------------
214	!
215	IF( nn_timing == 1 ) CALL timing_start('p4z_sbc_init')
216	!
217	! !* set file information
218	REWIND( numnatp_ref ) ! Namelist nampissbc in reference namelist : Pisces external sources of nutrients
219	READ ( numnatp_ref, nampissbc, IOSTAT = ios, ERR = 901)
220	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampissbc in reference namelist', lwp )
221
222	REWIND( numnatp_cfg ) ! Namelist nampissbc in configuration namelist : Pisces external sources of nutrients
223	READ ( numnatp_cfg, nampissbc, IOSTAT = ios, ERR = 902 )
224	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampissbc in configuration namelist', lwp )
225	IF(lwm) WRITE ( numonp, nampissbc )
226
227	IF ( ( nn_ice_tr >= 0 ) .AND. ln_ironice ) THEN
228	IF(lwp) THEN
229	WRITE(numout,*) ' ln_ironice incompatible with nn_ice_tr = ', nn_ice_tr
230	WRITE(numout,*) ' Specify your sea ice iron concentration in nampisice instead '
231	WRITE(numout,*) ' ln_ironice is forced to .FALSE. '
232	ENDIF
233	ln_ironice = .FALSE.
234	ENDIF
235
236	IF(lwp) THEN
237	WRITE(numout,*) ' '
238	WRITE(numout,*) ' namelist : nampissbc '
239	WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~ '
240	WRITE(numout,*) ' dust input from the atmosphere ln_dust = ', ln_dust
241	WRITE(numout,*) ' Variable solubility of iron input ln_solub = ', ln_solub
242	WRITE(numout,*) ' river input of nutrients ln_river = ', ln_river
243	WRITE(numout,*) ' atmospheric deposition of n ln_ndepo = ', ln_ndepo
244	WRITE(numout,*) ' Fe input from sediments ln_ironsed = ', ln_ironsed
245	WRITE(numout,*) ' Fe input from seaice ln_ironice = ', ln_ironice
246	WRITE(numout,*) ' fe input from hydrothermal vents ln_hydrofe = ', ln_hydrofe
247	WRITE(numout,*) ' coastal release of iron sedfeinput = ', sedfeinput
248	WRITE(numout,*) ' solubility of the dust dustsolub = ', dustsolub
249	WRITE(numout,*) ' Mineral Fe content of the dust mfrac = ', mfrac
250	WRITE(numout,*) ' Iron concentration in sea ice icefeinput = ', icefeinput
251	WRITE(numout,*) ' sinking speed of the dust wdust = ', wdust
252	WRITE(numout,*) ' nitrogen fixation rate nitrfix = ', nitrfix
253	WRITE(numout,*) ' nitrogen fixation sensitivty to light diazolight = ', diazolight
254	WRITE(numout,*) ' fe half-saturation cste for diazotrophs concfediaz = ', concfediaz
255	WRITE(numout,*) ' Fe to 3He ratio assumed for vent iron supply hratio = ', hratio
256	END IF
257
258	IF( ln_dust .OR. ln_river .OR. ln_ndepo ) THEN ; ll_sbc = .TRUE.
259	ELSE ; ll_sbc = .FALSE.
260	ENDIF
261
262	IF( ln_dust .AND. ln_solub ) THEN ; ll_solub = .TRUE.
263	ELSE ; ll_solub = .FALSE.
264	ENDIF
265
266
267	! dust input from the atmosphere
268	! ------------------------------
269	sumdepsi = 0._wp
270	IF( ln_dust ) THEN
271	!
272	IF(lwp) WRITE(numout,*) ' initialize dust input from atmosphere '
273	IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ '
274	!
275	ALLOCATE( dust(jpi,jpj) ) ! allocation
276	!
277	ALLOCATE( sf_dust(1), STAT=ierr ) !* allocate and fill sf_sst (forcing structure) with sn_sst
278	IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_sed_init: unable to allocate sf_dust structure' )
279	!
280	CALL fld_fill( sf_dust, (/ sn_dust /), cn_dir, 'p4z_sed_init', 'Atmospheric dust deposition', 'nampissed' )
281	ALLOCATE( sf_dust(1)%fnow(jpi,jpj,1) )
282	IF( sn_dust%ln_tint ) ALLOCATE( sf_dust(1)%fdta(jpi,jpj,1,2) )
283	!
284	IF( Agrif_Root() ) THEN ! Only on the master grid
285	! Get total input dust ; need to compute total atmospheric supply of Si in a year
286	CALL iom_open ( TRIM( sn_dust%clname ) , numdust )
287	CALL iom_gettime( numdust, zsteps, kntime=ntimes_dust) ! get number of record in file`
288	ENDIF
289	END IF
290
291	! Solubility of dust deposition of iron
292	! Only if ln_dust and ln_solubility set to true (ll_solub = .true.)
293	! -----------------------------------------------------------------
294	IF( ll_solub ) THEN
295	!
296	IF(lwp) WRITE(numout,*) ' initialize variable solubility of Fe '
297	IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ '
298	!
299	ALLOCATE( solub(jpi,jpj) ) ! allocation
300	!
301	ALLOCATE( sf_solub(1), STAT=ierr ) !* allocate and fill sf_sst (forcing structure) with sn_sst
302	IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_sed_init: unable to allocate sf_solub structure' )
303	!
304	CALL fld_fill( sf_solub, (/ sn_solub /), cn_dir, 'p4z_sed_init', 'Solubility of atm. iron ', 'nampissed' )
305	ALLOCATE( sf_solub(1)%fnow(jpi,jpj,1) )
306	IF( sn_solub%ln_tint ) ALLOCATE( sf_solub(1)%fdta(jpi,jpj,1,2) )
307	! get number of record in file
308	CALL iom_open ( TRIM( sn_solub%clname ) , numsolub )
309	CALL iom_gettime( numsolub, zsteps, kntime=ntimes_solub) ! get number of record in file
310	CALL iom_close( numsolub )
311	ENDIF
312
313	! nutrient input from rivers
314	! --------------------------
315	IF( ln_river ) THEN
316	!
317	slf_river(jr_dic) = sn_riverdic ; slf_river(jr_doc) = sn_riverdoc ; slf_river(jr_din) = sn_riverdin
318	slf_river(jr_don) = sn_riverdon ; slf_river(jr_dip) = sn_riverdip ; slf_river(jr_dop) = sn_riverdop
319	slf_river(jr_dsi) = sn_riverdsi
320	!
321	ALLOCATE( rivdic(jpi,jpj), rivalk(jpi,jpj), rivdin(jpi,jpj), rivdip(jpi,jpj), rivdsi(jpi,jpj) )
322	!
323	ALLOCATE( sf_river(jpriv), rivinput(jpriv), STAT=ierr1 ) !* allocate and fill sf_river (forcing structure) with sn_river_
324	rivinput(:) = 0.0
325
326	IF( ierr1 > 0 ) CALL ctl_stop( 'STOP', 'p4z_sed_init: unable to allocate sf_irver structure' )
327	!
328	CALL fld_fill( sf_river, slf_river, cn_dir, 'p4z_sed_init', 'Input from river ', 'nampissed' )
329	DO ifpr = 1, jpriv
330	ALLOCATE( sf_river(ifpr)%fnow(jpi,jpj,1 ) )
331	IF( slf_river(ifpr)%ln_tint ) ALLOCATE( sf_river(ifpr)%fdta(jpi,jpj,1,2) )
332	END DO
333	IF( Agrif_Root() ) THEN ! Only on the master grid
334	! Get total input rivers ; need to compute total river supply in a year
335	DO ifpr = 1, jpriv
336	CALL iom_open ( TRIM( slf_river(ifpr)%clname ), numriv )
337	CALL iom_gettime( numriv, zsteps, kntime=ntimes_riv)
338	ALLOCATE( zriver(jpi,jpj,ntimes_riv) )
339	DO jm = 1, ntimes_riv
340	CALL iom_get( numriv, jpdom_data, TRIM( slf_river(ifpr)%clvar ), zriver(:,:,jm), jm )
341	END DO
342	CALL iom_close( numriv )
343	ztimes_riv = 1._wp / FLOAT(ntimes_riv)
344	DO jm = 1, ntimes_riv
345	rivinput(ifpr) = rivinput(ifpr) + glob_sum( zriver(:,:,jm) * tmask(:,:,1) * ztimes_riv )
346	END DO
347	DEALLOCATE( zriver)
348	END DO
349	! N/P and Si releases due to coastal rivers
350	! -----------------------------------------
351	rivdicinput = (rivinput(jr_dic) + rivinput(jr_doc) ) * 1E3 / 12._wp
352	rivdininput = (rivinput(jr_din) + rivinput(jr_don) ) * 1E3 / rno3 / 14._wp
353	rivdipinput = (rivinput(jr_dip) + rivinput(jr_dop) ) * 1E3 / po4r / 31._wp
354	rivdsiinput = rivinput(jr_dsi) * 1E3 / 28.1_wp
355	rivalkinput = rivinput(jr_dic) * 1E3 / 12._wp
356	!
357	ENDIF
358	ELSE
359	rivdicinput = 0._wp
360	rivdininput = 0._wp
361	rivdipinput = 0._wp
362	rivdsiinput = 0._wp
363	rivalkinput = 0._wp
364	END IF
365	! nutrient input from dust
366	! ------------------------
367	nitdepinput = 0._wp
368	IF( ln_ndepo ) THEN
369	!
370	IF(lwp) WRITE(numout,*) ' initialize the nutrient input by dust from ndeposition.orca.nc'
371	IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
372	!
373	ALLOCATE( nitdep(jpi,jpj) ) ! allocation
374	!
375	ALLOCATE( sf_ndepo(1), STAT=ierr3 ) !* allocate and fill sf_sst (forcing structure) with sn_sst
376	IF( ierr3 > 0 ) CALL ctl_stop( 'STOP', 'p4z_sed_init: unable to allocate sf_ndepo structure' )
377	!
378	CALL fld_fill( sf_ndepo, (/ sn_ndepo /), cn_dir, 'p4z_sed_init', 'Nutrient atmospheric depositon ', 'nampissed' )
379	ALLOCATE( sf_ndepo(1)%fnow(jpi,jpj,1) )
380	IF( sn_ndepo%ln_tint ) ALLOCATE( sf_ndepo(1)%fdta(jpi,jpj,1,2) )
381	!
382	IF( Agrif_Root() ) THEN ! Only on the master grid
383	! Get total input dust ; need to compute total atmospheric supply of N in a year
384	CALL iom_open ( TRIM( sn_ndepo%clname ), numdepo )
385	CALL iom_gettime( numdepo, zsteps, kntime=ntimes_ndep)
386	ENDIF
387	ENDIF
388
389	! coastal and island masks
390	! ------------------------
391	IF( ln_ironsed ) THEN
392	!
393	IF(lwp) WRITE(numout,*) ' computation of an island mask to enhance coastal supply of iron'
394	IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
395	!
396	ALLOCATE( ironsed(jpi,jpj,jpk) ) ! allocation
397	!
398	CALL iom_open ( TRIM( sn_ironsed%clname ), numiron )
399	ALLOCATE( zcmask(jpi,jpj,jpk) )
400	CALL iom_get ( numiron, jpdom_data, TRIM( sn_ironsed%clvar ), zcmask(:,:,:), 1 )
401	CALL iom_close( numiron )
402	!
403	ik50 = 5 ! last level where depth less than 50 m
404	DO jk = jpkm1, 1, -1
405	IF( gdept_1d(jk) > 50. ) ik50 = jk - 1
406	END DO
407	IF (lwp) WRITE(numout,*)
408	IF (lwp) WRITE(numout,*) ' Level corresponding to 50m depth ', ik50,' ', gdept_1d(ik50+1)
409	IF (lwp) WRITE(numout,*)
410	DO jk = 1, ik50
411	DO jj = 2, jpjm1
412	DO ji = fs_2, fs_jpim1
413	IF( tmask(ji,jj,jk) /= 0. ) THEN
414	zmaskt = tmask(ji+1,jj,jk) * tmask(ji-1,jj,jk) * tmask(ji,jj+1,jk) &
415	& * tmask(ji,jj-1,jk) * tmask(ji,jj,jk+1)
416	IF( zmaskt == 0. ) zcmask(ji,jj,jk ) = MAX( 0.1, zcmask(ji,jj,jk) )
417	END IF
418	END DO
419	END DO
420	END DO
421	!
422	CALL lbc_lnk( zcmask , 'T', 1. ) ! lateral boundary conditions on cmask (sign unchanged)
423	!
424	DO jk = 1, jpk
425	DO jj = 1, jpj
426	DO ji = 1, jpi
427	zexpide = MIN( 8.,( gdept_0(ji,jj,jk) / 500. )**(-1.5) )
428	zdenitide = -0.9543 + 0.7662 * LOG( zexpide ) - 0.235 * LOG( zexpide )**2
429	zcmask(ji,jj,jk) = zcmask(ji,jj,jk) * MIN( 1., EXP( zdenitide ) / 0.5 )
430	END DO
431	END DO
432	END DO
433	! Coastal supply of iron
434	! -------------------------
435	ironsed(:,:,jpk) = 0._wp
436	DO jk = 1, jpkm1
437	ironsed(:,:,jk) = sedfeinput * zcmask(:,:,jk) / ( e3t_0(:,:,jk) * rday )
438	END DO
439	DEALLOCATE( zcmask)
440	ENDIF
441	!
442	! Iron from Hydrothermal vents
443	! ------------------------
444	IF( ln_hydrofe ) THEN
445	!
446	IF(lwp) WRITE(numout,*) ' Input of iron from hydrothermal vents '
447	IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
448	!
449	ALLOCATE( hydrofe(jpi,jpj,jpk) ) ! allocation
450	!
451	CALL iom_open ( TRIM( sn_hydrofe%clname ), numhydro )
452	CALL iom_get ( numhydro, jpdom_data, TRIM( sn_hydrofe%clvar ), hydrofe(:,:,:), 1 )
453	CALL iom_close( numhydro )
454	!
455	DO jk = 1, jpk
456	hydrofe(:,:,jk) = ( hydrofe(:,:,jk) * hratio ) / ( e1e2t(:,:) * e3t_0(:,:,jk) * ryyss + rtrn ) / 1000._wp
457	ENDDO
458	!
459	ENDIF
460	!
461	IF( ll_sbc ) CALL p4z_sbc( nit000 )
462	!
463	IF(lwp) THEN
464	WRITE(numout,*)
465	WRITE(numout,*) ' Total input of elements from river supply'
466	WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
467	WRITE(numout,) ' N Supply : ', rivdininputrno31E3/1E1214.,' TgN/yr'
468	WRITE(numout,) ' Si Supply : ', rivdsiinput1E3/1E12*28.1,' TgSi/yr'
469	WRITE(numout,) ' P Supply : ', rivdipinput1E3po4r/1E1231.,' TgP/yr'
470	WRITE(numout,) ' Alk Supply : ', rivalkinput1E3/1E12,' Teq/yr'
471	WRITE(numout,) ' DIC Supply : ', rivdicinput1E3*12./1E12,'TgC/yr'
472	WRITE(numout,*)
473	ENDIF
474	!
475	IF( nn_timing == 1 ) CALL timing_stop('p4z_sbc_init')
476	!
477	END SUBROUTINE p4z_sbc_init
478
479	#else
480	!!======================================================================
481	!! Dummy module : No PISCES bio-model
482	!!======================================================================
483	CONTAINS
484	SUBROUTINE p4z_sbc ! Empty routine
485	END SUBROUTINE p4z_sbc
486	#endif
487
488	!!======================================================================
489	END MODULE p4zsbc

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