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p4zsed.F90 in NEMO/branches/2018/dev_r10164_HPC09_ESIWACE_PREP_MERGE/src/TOP/PISCES/P4Z – NEMO

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source: NEMO/branches/2018/dev_r10164_HPC09_ESIWACE_PREP_MERGE/src/TOP/PISCES/P4Z/p4zsed.F90 @ 10419

Last change on this file since 10419 was 10419, checked in by smasson, 5 years ago
dev_r10164_HPC09_ESIWACE_PREP_MERGE: merge with trunk@10418, see #2133
Property svn:keywords set to `Id`
File size: 25.3 KB

Rev	Line
[3443]	1	MODULE p4zsed
	2	!!======================================================================
	3	!! * MODULE p4sed *
	4	!! TOP : PISCES Compute loss of organic matter in the sediments
	5	!!======================================================================
	6	!! History : 1.0 ! 2004-03 (O. Aumont) Original code
	7	!! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90
	8	!! 3.4 ! 2011-06 (C. Ethe) USE of fldread
	9	!! 3.5 ! 2012-07 (O. Aumont) improvment of river input of nutrients
	10	!!----------------------------------------------------------------------
	11	!! p4z_sed : Compute loss of organic matter in the sediments
	12	!!----------------------------------------------------------------------
	13	USE oce_trc ! shared variables between ocean and passive tracers
	14	USE trc ! passive tracers common variables
	15	USE sms_pisces ! PISCES Source Minus Sink variables
[10345]	16	USE p4zlim ! Co-limitations of differents nutrients
[3443]	17	USE p4zsbc ! External source of nutrients
	18	USE p4zint ! interpolation and computation of various fields
[10345]	19	USE sed ! Sediment module
[3443]	20	USE iom ! I/O manager
	21	USE prtctl_trc ! print control for debugging
	22
	23	IMPLICIT NONE
	24	PRIVATE
	25
[5385]	26	PUBLIC p4z_sed
	27	PUBLIC p4z_sed_alloc
	28
	29	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: nitrpot !: Nitrogen fixation
	30	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,: ) :: sdenit !: Nitrate reduction in the sediments
[3443]	31	REAL(wp) :: r1_rday !: inverse of rday
[10345]	32	LOGICAL, SAVE :: lk_sed
[3443]	33
	34	!!----------------------------------------------------------------------
[10067]	35	!! NEMO/TOP 4.0 , NEMO Consortium (2018)
[7753]	36	!! $Id$
[10068]	37	!! Software governed by the CeCILL license (see ./LICENSE)
[3443]	38	!!----------------------------------------------------------------------
	39	CONTAINS
	40
[5385]	41	SUBROUTINE p4z_sed( kt, knt )
[3443]	42	!!---------------------------------------------------------------------
	43	!! * ROUTINE p4z_sed *
	44	!!
	45	!! ** Purpose : Compute loss of organic matter in the sediments. This
	46	!! is by no way a sediment model. The loss is simply
	47	!! computed to balance the inout from rivers and dust
	48	!!
	49	!! ** Method : - ???
	50	!!---------------------------------------------------------------------
	51	!
[5385]	52	INTEGER, INTENT(in) :: kt, knt ! ocean time step
[10127]	53	INTEGER :: ji, jj, jk, ikt
	54	REAL(wp) :: zrivalk, zrivsil, zrivno3
[3443]	55	REAL(wp) :: zwflux, zfminus, zfplus
	56	REAL(wp) :: zlim, zfact, zfactcal
[8533]	57	REAL(wp) :: zo2, zno3, zflx, zpdenit, z1pdenit, zolimit
[7646]	58	REAL(wp) :: zsiloss, zcaloss, zws3, zws4, zwsc, zdep
	59	REAL(wp) :: zwstpoc, zwstpon, zwstpop
	60	REAL(wp) :: ztrfer, ztrpo4s, ztrdp, zwdust, zmudia, ztemp
	61	REAL(wp) :: xdiano3, xdianh4
[3531]	62	!
[3443]	63	CHARACTER (len=25) :: charout
[10127]	64	REAL(wp), DIMENSION(jpi,jpj ) :: zdenit2d, zbureff, zwork
[10368]	65	REAL(wp), DIMENSION(jpi,jpj ) :: zwsbio3, zwsbio4
[9125]	66	REAL(wp), DIMENSION(jpi,jpj ) :: zsedcal, zsedsi, zsedc
	67	REAL(wp), DIMENSION(jpi,jpj,jpk) :: zsoufer, zlight
	68	REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrpo4, ztrdop, zirondep, zpdep
[10419]	69	REAL(wp), ALLOCATABLE, DIMENSION(:,: ) :: zsidep, zironice
[3443]	70	!!---------------------------------------------------------------------
	71	!
[9124]	72	IF( ln_timing ) CALL timing_start('p4z_sed')
[3443]	73	!
[10345]	74	IF( kt == nittrc000 .AND. knt == 1 ) THEN
	75	r1_rday = 1. / rday
	76	IF (ln_sediment .AND. ln_sed_2way) THEN
	77	lk_sed = .TRUE.
	78	ELSE
	79	lk_sed = .FALSE.
	80	ENDIF
	81	ENDIF
	82	!
[5385]	83	IF( kt == nittrc000 .AND. knt == 1 ) r1_rday = 1. / rday
[3443]	84	!
	85	! Allocate temporary workspace
[10368]	86	ALLOCATE( ztrpo4(jpi,jpj,jpk) )
	87	IF( ln_p5z ) ALLOCATE( ztrdop(jpi,jpj,jpk) )
[4521]	88
[7753]	89	zdenit2d(:,:) = 0.e0
	90	zbureff (:,:) = 0.e0
[10127]	91	zwork (:,:) = 0.e0
[7753]	92	zsedsi (:,:) = 0.e0
	93	zsedcal (:,:) = 0.e0
	94	zsedc (:,:) = 0.e0
[3443]	95
	96	! Iron input/uptake due to sea ice : Crude parameterization based on Lancelot et al.
	97	! ----------------------------------------------------
	98	IF( ln_ironice ) THEN
	99	!
[9125]	100	ALLOCATE( zironice(jpi,jpj) )
[3443]	101	!
	102	DO jj = 1, jpj
	103	DO ji = 1, jpi
[6140]	104	zdep = rfact2 / e3t_n(ji,jj,1)
[4148]	105	zwflux = fmmflx(ji,jj) / 1000._wp
[5385]	106	zfminus = MIN( 0._wp, -zwflux ) * trb(ji,jj,1,jpfer) * zdep
[4148]	107	zfplus = MAX( 0._wp, -zwflux ) * icefeinput * zdep
[3443]	108	zironice(ji,jj) = zfplus + zfminus
	109	END DO
	110	END DO
	111	!
[7753]	112	tra(:,:,1,jpfer) = tra(:,:,1,jpfer) + zironice(:,:)
[4996]	113	!
[5385]	114	IF( lk_iomput .AND. knt == nrdttrc .AND. iom_use( "Ironice" ) ) &
[6140]	115	& CALL iom_put( "Ironice", zironice(:,:) * 1.e+3 * rfact2r * e3t_n(:,:,1) * tmask(:,:,1) ) ! iron flux from ice
[4996]	116	!
[9125]	117	DEALLOCATE( zironice )
[3443]	118	!
	119	ENDIF
	120
	121	! Add the external input of nutrients from dust deposition
	122	! ----------------------------------------------------------
	123	IF( ln_dust ) THEN
	124	!
[9539]	125	ALLOCATE( zsidep(jpi,jpj), zpdep(jpi,jpj,jpk), zirondep(jpi,jpj,jpk) )
[3443]	126	! ! Iron and Si deposition at the surface
	127	IF( ln_solub ) THEN
[7753]	128	zirondep(:,:,1) = solub(:,:) * dust(:,:) * mfrac * rfact2 / e3t_n(:,:,1) / 55.85 + 3.e-10 * r1_ryyss
[3443]	129	ELSE
[7753]	130	zirondep(:,:,1) = dustsolub * dust(:,:) * mfrac * rfact2 / e3t_n(:,:,1) / 55.85 + 3.e-10 * r1_ryyss
[3443]	131	ENDIF
[7753]	132	zsidep(:,:) = 8.8 * 0.075 * dust(:,:) * mfrac * rfact2 / e3t_n(:,:,1) / 28.1
	133	zpdep (:,:,1) = 0.1 * 0.021 * dust(:,:) * mfrac * rfact2 / e3t_n(:,:,1) / 31. / po4r
[3443]	134	! ! Iron solubilization of particles in the water column
[4529]	135	! ! dust in kg/m2/s ---> 1/55.85 to put in mol/Fe ; wdust in m/j
	136	zwdust = 0.03 * rday / ( wdust * 55.85 ) / ( 270. * rday )
[3443]	137	DO jk = 2, jpkm1
[7753]	138	zirondep(:,:,jk) = dust(:,:) * mfrac * zwdust * rfact2 * EXP( -gdept_n(:,:,jk) / 540. )
	139	zpdep (:,:,jk) = zirondep(:,:,jk) * 0.023
[3443]	140	END DO
	141	! ! Iron solubilization of particles in the water column
[7753]	142	tra(:,:,1,jpsil) = tra(:,:,1,jpsil) + zsidep (:,:)
[9539]	143	DO jk = 1, jpkm1
	144	tra(:,:,jk,jppo4) = tra(:,:,jk,jppo4) + zpdep (:,:,jk)
	145	tra(:,:,jk,jpfer) = tra(:,:,jk,jpfer) + zirondep(:,:,jk)
	146	ENDDO
[4996]	147	!
	148	IF( lk_iomput ) THEN
[5385]	149	IF( knt == nrdttrc ) THEN
[4996]	150	IF( iom_use( "Irondep" ) ) &
[6140]	151	& CALL iom_put( "Irondep", zirondep(:,:,1) * 1.e+3 * rfact2r * e3t_n(:,:,1) * tmask(:,:,1) ) ! surface downward dust depo of iron
[4996]	152	IF( iom_use( "pdust" ) ) &
	153	& CALL iom_put( "pdust" , dust(:,:) / ( wdust * rday ) * tmask(:,:,1) ) ! dust concentration at surface
[3443]	154	ENDIF
	155	ENDIF
[9539]	156	DEALLOCATE( zsidep, zpdep, zirondep )
[3443]	157	!
	158	ENDIF
	159
	160	! Add the external input of nutrients from river
	161	! ----------------------------------------------------------
	162	IF( ln_river ) THEN
[5385]	163	DO jj = 1, jpj
	164	DO ji = 1, jpi
	165	DO jk = 1, nk_rnf(ji,jj)
	166	tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + rivdip(ji,jj) * rfact2
	167	tra(ji,jj,jk,jpno3) = tra(ji,jj,jk,jpno3) + rivdin(ji,jj) * rfact2
	168	tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + rivdic(ji,jj) * 5.e-5 * rfact2
	169	tra(ji,jj,jk,jpsil) = tra(ji,jj,jk,jpsil) + rivdsi(ji,jj) * rfact2
	170	tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + rivdic(ji,jj) * rfact2
	171	tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + ( rivalk(ji,jj) - rno3 * rivdin(ji,jj) ) * rfact2
[10368]	172	tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + rivdoc(ji,jj) * rfact2
[5385]	173	ENDDO
	174	ENDDO
	175	ENDDO
[10368]	176	IF (ln_ligand) THEN
	177	DO jj = 1, jpj
	178	DO ji = 1, jpi
	179	DO jk = 1, nk_rnf(ji,jj)
	180	tra(ji,jj,jk,jplgw) = tra(ji,jj,jk,jplgw) + rivdic(ji,jj) * 5.e-5 * rfact2
	181	ENDDO
	182	ENDDO
	183	ENDDO
	184	ENDIF
[7646]	185	IF( ln_p5z ) THEN
	186	DO jj = 1, jpj
	187	DO ji = 1, jpi
	188	DO jk = 1, nk_rnf(ji,jj)
	189	tra(ji,jj,jk,jpdop) = tra(ji,jj,jk,jpdop) + rivdop(ji,jj) * rfact2
	190	tra(ji,jj,jk,jpdon) = tra(ji,jj,jk,jpdon) + rivdon(ji,jj) * rfact2
	191	ENDDO
	192	ENDDO
	193	ENDDO
	194	ENDIF
[3443]	195	ENDIF
	196
	197	! Add the external input of nutrients from nitrogen deposition
	198	! ----------------------------------------------------------
	199	IF( ln_ndepo ) THEN
[7753]	200	tra(:,:,1,jpno3) = tra(:,:,1,jpno3) + nitdep(:,:) * rfact2
	201	tra(:,:,1,jptal) = tra(:,:,1,jptal) - rno3 * nitdep(:,:) * rfact2
[3443]	202	ENDIF
	203
	204	! Add the external input of iron from hydrothermal vents
	205	! ------------------------------------------------------
	206	IF( ln_hydrofe ) THEN
[7753]	207	tra(:,:,:,jpfer) = tra(:,:,:,jpfer) + hydrofe(:,:,:) * rfact2
[7646]	208	IF( ln_ligand ) THEN
[7753]	209	tra(:,:,:,jplgw) = tra(:,:,:,jplgw) + ( hydrofe(:,:,:) * lgw_rath ) * rfact2
[7646]	210	ENDIF
[3443]	211	!
[5385]	212	IF( lk_iomput .AND. knt == nrdttrc .AND. iom_use( "HYDR" ) ) &
[3446]	213	& CALL iom_put( "HYDR", hydrofe(:,:,:) * 1.e+3 * tmask(:,:,:) ) ! hydrothermal iron input
[3443]	214	ENDIF
	215
[7646]	216	! OA: Warning, the following part is necessary to avoid CFL problems above the sediments
[4521]	217	! --------------------------------------------------------------------
	218	DO jj = 1, jpj
	219	DO ji = 1, jpi
	220	ikt = mbkt(ji,jj)
[6140]	221	zdep = e3t_n(ji,jj,ikt) / xstep
[4521]	222	zwsbio4(ji,jj) = MIN( 0.99 * zdep, wsbio4(ji,jj,ikt) )
	223	zwsbio3(ji,jj) = MIN( 0.99 * zdep, wsbio3(ji,jj,ikt) )
	224	END DO
	225	END DO
[7646]	226	!
	227	IF( .NOT.lk_sed ) THEN
[10345]	228	!
	229	! Add the external input of iron from sediment mobilization
	230	! ------------------------------------------------------
	231	IF( ln_ironsed ) THEN
	232	tra(:,:,:,jpfer) = tra(:,:,:,jpfer) + ironsed(:,:,:) * rfact2
	233	!
	234	IF( lk_iomput .AND. knt == nrdttrc .AND. iom_use( "Ironsed" ) ) &
	235	& CALL iom_put( "Ironsed", ironsed(:,:,:) * 1.e+3 * tmask(:,:,:) ) ! iron inputs from sediments
	236	ENDIF
	237
[7646]	238	! Computation of the sediment denitrification proportion: The metamodel from midlleburg (2006) is being used
	239	! Computation of the fraction of organic matter that is permanently buried from Dunne's model
	240	! -------------------------------------------------------
	241	DO jj = 1, jpj
	242	DO ji = 1, jpi
	243	IF( tmask(ji,jj,1) == 1 ) THEN
	244	ikt = mbkt(ji,jj)
	245	zflx = ( trb(ji,jj,ikt,jpgoc) * zwsbio4(ji,jj) &
	246	& + trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) ) * 1E3 * 1E6 / 1E4
	247	zflx = LOG10( MAX( 1E-3, zflx ) )
	248	zo2 = LOG10( MAX( 10. , trb(ji,jj,ikt,jpoxy) * 1E6 ) )
	249	zno3 = LOG10( MAX( 1. , trb(ji,jj,ikt,jpno3) * 1E6 * rno3 ) )
	250	zdep = LOG10( gdepw_n(ji,jj,ikt+1) )
	251	zdenit2d(ji,jj) = -2.2567 - 1.185 * zflx - 0.221 * zflx*2 - 0.3995 zno3 * zo2 + 1.25 * zno3 &
	252	& + 0.4721 * zo2 - 0.0996 * zdep + 0.4256 * zflx * zo2
	253	zdenit2d(ji,jj) = 10.0**( zdenit2d(ji,jj) )
	254	!
	255	zflx = ( trb(ji,jj,ikt,jpgoc) * zwsbio4(ji,jj) &
	256	& + trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) ) * 1E6
	257	zbureff(ji,jj) = 0.013 + 0.53 * zflx2 / ( 7.0 + zflx )2
[10127]	258	ENDIF
[7646]	259	END DO
[10127]	260	END DO
[7646]	261	!
	262	ENDIF
[3443]	263
[4148]	264	! This loss is scaled at each bottom grid cell for equilibrating the total budget of silica in the ocean.
	265	! Thus, the amount of silica lost in the sediments equal the supply at the surface (dust+rivers)
[3443]	266	! ------------------------------------------------------
[10127]	267	IF( .NOT.lk_sed ) zrivsil = 1._wp - sedsilfrac
[3443]	268
	269	DO jj = 1, jpj
	270	DO ji = 1, jpi
	271	ikt = mbkt(ji,jj)
[6140]	272	zdep = xstep / e3t_n(ji,jj,ikt)
[10368]	273	zwsc = zwsbio4(ji,jj) * zdep
[5385]	274	zsiloss = trb(ji,jj,ikt,jpgsi) * zwsc
	275	zcaloss = trb(ji,jj,ikt,jpcal) * zwsc
[3443]	276	!
[5385]	277	tra(ji,jj,ikt,jpgsi) = tra(ji,jj,ikt,jpgsi) - zsiloss
	278	tra(ji,jj,ikt,jpcal) = tra(ji,jj,ikt,jpcal) - zcaloss
[3443]	279	END DO
	280	END DO
[7646]	281	!
	282	IF( .NOT.lk_sed ) THEN
	283	DO jj = 1, jpj
	284	DO ji = 1, jpi
	285	ikt = mbkt(ji,jj)
	286	zdep = xstep / e3t_n(ji,jj,ikt)
[10368]	287	zwsc = zwsbio4(ji,jj) * zdep
[7646]	288	zsiloss = trb(ji,jj,ikt,jpgsi) * zwsc
	289	zcaloss = trb(ji,jj,ikt,jpcal) * zwsc
	290	tra(ji,jj,ikt,jpsil) = tra(ji,jj,ikt,jpsil) + zsiloss * zrivsil
	291	!
	292	zfactcal = MIN( excess(ji,jj,ikt), 0.2 )
	293	zfactcal = MIN( 1., 1.3 * ( 0.2 - zfactcal ) / ( 0.4 - zfactcal ) )
[10127]	294	zrivalk = sedcalfrac * zfactcal
[7646]	295	tra(ji,jj,ikt,jptal) = tra(ji,jj,ikt,jptal) + zcaloss * zrivalk * 2.0
	296	tra(ji,jj,ikt,jpdic) = tra(ji,jj,ikt,jpdic) + zcaloss * zrivalk
[8533]	297	zsedcal(ji,jj) = (1.0 - zrivalk) * zcaloss * e3t_n(ji,jj,ikt)
	298	zsedsi (ji,jj) = (1.0 - zrivsil) * zsiloss * e3t_n(ji,jj,ikt)
[7646]	299	END DO
	300	END DO
	301	ENDIF
	302	!
[3443]	303	DO jj = 1, jpj
	304	DO ji = 1, jpi
[5385]	305	ikt = mbkt(ji,jj)
[6140]	306	zdep = xstep / e3t_n(ji,jj,ikt)
[4521]	307	zws4 = zwsbio4(ji,jj) * zdep
	308	zws3 = zwsbio3(ji,jj) * zdep
[5385]	309	tra(ji,jj,ikt,jpgoc) = tra(ji,jj,ikt,jpgoc) - trb(ji,jj,ikt,jpgoc) * zws4
	310	tra(ji,jj,ikt,jppoc) = tra(ji,jj,ikt,jppoc) - trb(ji,jj,ikt,jppoc) * zws3
	311	tra(ji,jj,ikt,jpbfe) = tra(ji,jj,ikt,jpbfe) - trb(ji,jj,ikt,jpbfe) * zws4
	312	tra(ji,jj,ikt,jpsfe) = tra(ji,jj,ikt,jpsfe) - trb(ji,jj,ikt,jpsfe) * zws3
[3443]	313	END DO
	314	END DO
[7646]	315	!
	316	IF( ln_p5z ) THEN
	317	DO jj = 1, jpj
	318	DO ji = 1, jpi
	319	ikt = mbkt(ji,jj)
	320	zdep = xstep / e3t_n(ji,jj,ikt)
	321	zws4 = zwsbio4(ji,jj) * zdep
	322	zws3 = zwsbio3(ji,jj) * zdep
	323	tra(ji,jj,ikt,jpgon) = tra(ji,jj,ikt,jpgon) - trb(ji,jj,ikt,jpgon) * zws4
	324	tra(ji,jj,ikt,jppon) = tra(ji,jj,ikt,jppon) - trb(ji,jj,ikt,jppon) * zws3
	325	tra(ji,jj,ikt,jpgop) = tra(ji,jj,ikt,jpgop) - trb(ji,jj,ikt,jpgop) * zws4
	326	tra(ji,jj,ikt,jppop) = tra(ji,jj,ikt,jppop) - trb(ji,jj,ikt,jppop) * zws3
	327	END DO
	328	END DO
	329	ENDIF
[3443]	330
[7646]	331	IF( .NOT.lk_sed ) THEN
[8533]	332	! The 0.5 factor in zpdenit is to avoid negative NO3 concentration after
	333	! denitrification in the sediments. Not very clever, but simpliest option.
[7646]	334	DO jj = 1, jpj
	335	DO ji = 1, jpi
	336	ikt = mbkt(ji,jj)
	337	zdep = xstep / e3t_n(ji,jj,ikt)
	338	zws4 = zwsbio4(ji,jj) * zdep
	339	zws3 = zwsbio3(ji,jj) * zdep
	340	zrivno3 = 1. - zbureff(ji,jj)
	341	zwstpoc = trb(ji,jj,ikt,jpgoc) * zws4 + trb(ji,jj,ikt,jppoc) * zws3
	342	zpdenit = MIN( 0.5 * ( trb(ji,jj,ikt,jpno3) - rtrn ) / rdenit, zdenit2d(ji,jj) * zwstpoc * zrivno3 )
	343	z1pdenit = zwstpoc * zrivno3 - zpdenit
	344	zolimit = MIN( ( trb(ji,jj,ikt,jpoxy) - rtrn ) / o2ut, z1pdenit * ( 1.- nitrfac(ji,jj,ikt) ) )
[8533]	345	tra(ji,jj,ikt,jpdoc) = tra(ji,jj,ikt,jpdoc) + z1pdenit - zolimit
	346	tra(ji,jj,ikt,jppo4) = tra(ji,jj,ikt,jppo4) + zpdenit + zolimit
	347	tra(ji,jj,ikt,jpnh4) = tra(ji,jj,ikt,jpnh4) + zpdenit + zolimit
	348	tra(ji,jj,ikt,jpno3) = tra(ji,jj,ikt,jpno3) - rdenit * zpdenit
[7646]	349	tra(ji,jj,ikt,jpoxy) = tra(ji,jj,ikt,jpoxy) - zolimit * o2ut
[8533]	350	tra(ji,jj,ikt,jptal) = tra(ji,jj,ikt,jptal) + rno3 * (zolimit + (1.+rdenit) * zpdenit )
	351	tra(ji,jj,ikt,jpdic) = tra(ji,jj,ikt,jpdic) + zpdenit + zolimit
[7646]	352	sdenit(ji,jj) = rdenit * zpdenit * e3t_n(ji,jj,ikt)
[8533]	353	zsedc(ji,jj) = (1. - zrivno3) * zwstpoc * e3t_n(ji,jj,ikt)
[7646]	354	IF( ln_p5z ) THEN
	355	zwstpop = trb(ji,jj,ikt,jpgop) * zws4 + trb(ji,jj,ikt,jppop) * zws3
	356	zwstpon = trb(ji,jj,ikt,jpgon) * zws4 + trb(ji,jj,ikt,jppon) * zws3
[8541]	357	tra(ji,jj,ikt,jpdon) = tra(ji,jj,ikt,jpdon) + ( z1pdenit - zolimit ) * zwstpon / (zwstpoc + rtrn)
	358	tra(ji,jj,ikt,jpdop) = tra(ji,jj,ikt,jpdop) + ( z1pdenit - zolimit ) * zwstpop / (zwstpoc + rtrn)
[7646]	359	ENDIF
	360	END DO
	361	END DO
	362	ENDIF
	363
	364
[3443]	365	! Nitrogen fixation process
[4529]	366	! Small source iron from particulate inorganic iron
[3443]	367	!-----------------------------------
	368	DO jk = 1, jpkm1
[7753]	369	zlight (:,:,jk) = ( 1.- EXP( -etot_ndcy(:,:,jk) / diazolight ) ) * ( 1. - fr_i(:,:) )
	370	zsoufer(:,:,jk) = zlight(:,:,jk) * 2E-11 / ( 2E-11 + biron(:,:,jk) )
[7646]	371	ENDDO
	372	IF( ln_p4z ) THEN
	373	DO jk = 1, jpkm1
	374	DO jj = 1, jpj
	375	DO ji = 1, jpi
	376	! ! Potential nitrogen fixation dependant on temperature and iron
[10368]	377	ztemp = tsn(ji,jj,jk,jp_tem)
	378	zmudia = MAX( 0.,-0.001096ztemp2 + 0.057ztemp -0.637 ) * 7.625
	379	! Potential nitrogen fixation dependant on temperature and iron
	380	xdianh4 = trb(ji,jj,jk,jpnh4) / ( concnnh4 + trb(ji,jj,jk,jpnh4) )
	381	xdiano3 = trb(ji,jj,jk,jpno3) / ( concnno3 + trb(ji,jj,jk,jpno3) ) * (1. - xdianh4)
	382	zlim = ( 1.- xdiano3 - xdianh4 )
	383	IF( zlim <= 0.1 ) zlim = 0.01
[7646]	384	zfact = zlim * rfact2
[10368]	385	ztrfer = biron(ji,jj,jk) / ( concfediaz + biron(ji,jj,jk) )
	386	ztrpo4(ji,jj,jk) = trb(ji,jj,jk,jppo4) / ( 1E-6 + trb(ji,jj,jk,jppo4) )
	387	ztrdp = ztrpo4(ji,jj,jk)
	388	nitrpot(ji,jj,jk) = zmudia * r1_rday * zfact * MIN( ztrfer, ztrdp ) * zlight(ji,jj,jk)
[7646]	389	END DO
[3443]	390	END DO
	391	END DO
[7646]	392	ELSE ! p5z
	393	DO jk = 1, jpkm1
	394	DO jj = 1, jpj
	395	DO ji = 1, jpi
	396	! ! Potential nitrogen fixation dependant on temperature and iron
	397	ztemp = tsn(ji,jj,jk,jp_tem)
	398	zmudia = MAX( 0.,-0.001096ztemp2 + 0.057ztemp -0.637 ) * 7.625
	399	! Potential nitrogen fixation dependant on temperature and iron
	400	xdianh4 = trb(ji,jj,jk,jpnh4) / ( concnnh4 + trb(ji,jj,jk,jpnh4) )
	401	xdiano3 = trb(ji,jj,jk,jpno3) / ( concnno3 + trb(ji,jj,jk,jpno3) ) * (1. - xdianh4)
	402	zlim = ( 1.- xdiano3 - xdianh4 )
	403	IF( zlim <= 0.1 ) zlim = 0.01
	404	zfact = zlim * rfact2
	405	ztrfer = biron(ji,jj,jk) / ( concfediaz + biron(ji,jj,jk) )
	406	ztrpo4(ji,jj,jk) = trb(ji,jj,jk,jppo4) / ( 1E-6 + trb(ji,jj,jk,jppo4) )
	407	ztrdop(ji,jj,jk) = trb(ji,jj,jk,jpdop) / ( 1E-6 + trb(ji,jj,jk,jpdop) ) * (1. - ztrpo4(ji,jj,jk))
	408	ztrdp = ztrpo4(ji,jj,jk) + ztrdop(ji,jj,jk)
	409	nitrpot(ji,jj,jk) = zmudia * r1_rday * zfact * MIN( ztrfer, ztrdp ) * zlight(ji,jj,jk)
	410	END DO
	411	END DO
	412	END DO
	413	ENDIF
[3496]	414
[3443]	415	! Nitrogen change due to nitrogen fixation
	416	! ----------------------------------------
[7646]	417	IF( ln_p4z ) THEN
	418	DO jk = 1, jpkm1
	419	DO jj = 1, jpj
	420	DO ji = 1, jpi
	421	zfact = nitrpot(ji,jj,jk) * nitrfix
[10368]	422	tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zfact / 3.0
	423	tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + rno3 * zfact / 3.0
	424	tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) - zfact * 2.0 / 3.0
	425	tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + zfact * 1.0 / 3.0
	426	tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zfact * 1.0 / 3.0 * 2.0 / 3.0
	427	tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zfact * 1.0 / 3.0 * 1.0 / 3.0
	428	tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) + ( o2ut + o2nit ) * zfact * 2.0 / 3.0 + o2nit * zfact / 3.0
	429	tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) - 30E-6 * zfact * 1.0 / 3.0
	430	tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + 30E-6 * zfact * 1.0 / 3.0 * 2.0 / 3.0
	431	tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + 30E-6 * zfact * 1.0 / 3.0 * 1.0 / 3.0
	432	tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + 0.002 * 4E-10 * zsoufer(ji,jj,jk) * rfact2 / rday
[7646]	433	tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + concdnh4 / ( concdnh4 + trb(ji,jj,jk,jppo4) ) &
[10368]	434	& * 0.001 * trb(ji,jj,jk,jpdoc) * xstep
[7646]	435	END DO
	436	END DO
	437	END DO
	438	ELSE ! p5z
	439	DO jk = 1, jpkm1
	440	DO jj = 1, jpj
	441	DO ji = 1, jpi
	442	zfact = nitrpot(ji,jj,jk) * nitrfix
	443	tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zfact / 3.0
	444	tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + rno3 * zfact / 3.0
	445	tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) - 16.0 / 46.0 * zfact * ( 1.0 - 1.0 / 3.0 ) &
	446	& * ztrpo4(ji,jj,jk) / (ztrpo4(ji,jj,jk) + ztrdop(ji,jj,jk) + rtrn)
	447	tra(ji,jj,jk,jpdon) = tra(ji,jj,jk,jpdon) + zfact * 1.0 / 3.0
	448	tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + zfact * 1.0 / 3.0
	449	tra(ji,jj,jk,jpdop) = tra(ji,jj,jk,jpdop) + 16.0 / 46.0 * zfact / 3.0 &
	450	& - 16.0 / 46.0 * zfact * ztrdop(ji,jj,jk) &
	451	& / (ztrpo4(ji,jj,jk) + ztrdop(ji,jj,jk) + rtrn)
	452	tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zfact * 1.0 / 3.0 * 2.0 / 3.0
	453	tra(ji,jj,jk,jppon) = tra(ji,jj,jk,jppon) + zfact * 1.0 / 3.0 * 2.0 /3.0
	454	tra(ji,jj,jk,jppop) = tra(ji,jj,jk,jppop) + 16.0 / 46.0 * zfact * 1.0 / 3.0 * 2.0 /3.0
	455	tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zfact * 1.0 / 3.0 * 1.0 / 3.0
	456	tra(ji,jj,jk,jpgon) = tra(ji,jj,jk,jpgon) + zfact * 1.0 / 3.0 * 1.0 /3.0
	457	tra(ji,jj,jk,jpgop) = tra(ji,jj,jk,jpgop) + 16.0 / 46.0 * zfact * 1.0 / 3.0 * 1.0 /3.0
	458	tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) + ( o2ut + o2nit ) * zfact * 2.0 / 3.0 + o2nit * zfact / 3.0
	459	tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) - 30E-6 * zfact * 1.0 / 3.0
	460	tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + 30E-6 * zfact * 1.0 / 3.0 * 2.0 / 3.0
	461	tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + 30E-6 * zfact * 1.0 / 3.0 * 1.0 / 3.0
	462	tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + 0.002 * 4E-10 * zsoufer(ji,jj,jk) * rfact2 / rday
	463	END DO
	464	END DO
	465	END DO
	466	!
	467	ENDIF
[4529]	468
[4996]	469	IF( lk_iomput ) THEN
[5385]	470	IF( knt == nrdttrc ) THEN
[8533]	471	zfact = 1.e+3 * rfact2r ! conversion from molC/l/kt to molN/m3/s
	472	IF( iom_use("Nfix" ) ) CALL iom_put( "Nfix", nitrpot(:,:,:) * nitrfix * rno3 * zfact * tmask(:,:,:) ) ! nitrogen fixation
[4996]	473	IF( iom_use("INTNFIX") ) THEN ! nitrogen fixation rate in ocean ( vertically integrated )
[10127]	474	zwork(:,:) = 0.
[4996]	475	DO jk = 1, jpkm1
[10127]	476	zwork(:,:) = zwork(:,:) + nitrpot(:,:,jk) * nitrfix * rno3 * zfact * e3t_n(:,:,jk) * tmask(:,:,jk)
[4996]	477	ENDDO
[10127]	478	CALL iom_put( "INTNFIX" , zwork )
[3751]	479	ENDIF
[8533]	480	IF( iom_use("SedCal" ) ) CALL iom_put( "SedCal", zsedcal(:,:) * zfact )
	481	IF( iom_use("SedSi" ) ) CALL iom_put( "SedSi", zsedsi (:,:) * zfact )
	482	IF( iom_use("SedC" ) ) CALL iom_put( "SedC", zsedc (:,:) * zfact )
	483	IF( iom_use("Sdenit" ) ) CALL iom_put( "Sdenit", sdenit (:,:) * zfact * rno3 )
[3443]	484	ENDIF
	485	ENDIF
	486	!
	487	IF(ln_ctl) THEN ! print mean trends (USEd for debugging)
	488	WRITE(charout, fmt="('sed ')")
	489	CALL prt_ctl_trc_info(charout)
[5385]	490	CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm)
[3443]	491	ENDIF
	492	!
[9125]	493	IF( ln_p5z ) DEALLOCATE( ztrpo4, ztrdop )
[3443]	494	!
[9124]	495	IF( ln_timing ) CALL timing_stop('p4z_sed')
[3443]	496	!
	497	END SUBROUTINE p4z_sed
	498
[5385]	499
	500	INTEGER FUNCTION p4z_sed_alloc()
	501	!!----------------------------------------------------------------------
	502	!! * ROUTINE p4z_sed_alloc *
	503	!!----------------------------------------------------------------------
	504	ALLOCATE( nitrpot(jpi,jpj,jpk), sdenit(jpi,jpj), STAT=p4z_sed_alloc )
	505	!
	506	IF( p4z_sed_alloc /= 0 ) CALL ctl_warn('p4z_sed_alloc: failed to allocate arrays')
	507	!
	508	END FUNCTION p4z_sed_alloc
	509
[3443]	510	!!======================================================================
[5656]	511	END MODULE p4zsed

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