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p4zlim.F90

Last change on this file was 15459, checked in by cetlod, 2 years ago
Various bug fixes and more comments in PISCES routines ; sette test OK in debug mode, nn_hls=1/2, with tiling ; run.stat unchanged ; of course tracer.stat different
File size: 21.1 KB

Rev	Line
[10227]	1	MODULE p4zlim
	2	!!======================================================================
	3	!! * MODULE p4zlim *
[15459]	4	!! TOP : Computes the nutrient limitation terms of phytoplankton
[10227]	5	!!======================================================================
	6	!! History : 1.0 ! 2004 (O. Aumont) Original code
	7	!! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90
	8	!! 3.4 ! 2011-04 (O. Aumont, C. Ethe) Limitation for iron modelled in quota
	9	!!----------------------------------------------------------------------
	10	!! p4z_lim : Compute the nutrients limitation terms
	11	!! p4z_lim_init : Read the namelist
	12	!!----------------------------------------------------------------------
	13	USE oce_trc ! Shared ocean-passive tracers variables
	14	USE trc ! Tracers defined
	15	USE sms_pisces ! PISCES variables
[15459]	16	USE iom ! I/O manager
[10227]	17
	18	IMPLICIT NONE
	19	PRIVATE
	20
[15459]	21	PUBLIC p4z_lim ! called in p4zbio.F90
	22	PUBLIC p4z_lim_init ! called in trcsms_pisces.F90
	23	PUBLIC p4z_lim_alloc ! called in trcini_pisces.F90
[10227]	24
	25	!! * Shared module variables
	26	REAL(wp), PUBLIC :: concnno3 !: NO3, PO4 half saturation
	27	REAL(wp), PUBLIC :: concdno3 !: Phosphate half saturation for diatoms
[15459]	28	REAL(wp), PUBLIC :: concnnh4 !: NH4 half saturation for nanophyto
[10227]	29	REAL(wp), PUBLIC :: concdnh4 !: NH4 half saturation for diatoms
	30	REAL(wp), PUBLIC :: concnfer !: Iron half saturation for nanophyto
	31	REAL(wp), PUBLIC :: concdfer !: Iron half saturation for diatoms
	32	REAL(wp), PUBLIC :: concbno3 !: NO3 half saturation for bacteria
	33	REAL(wp), PUBLIC :: concbnh4 !: NH4 half saturation for bacteria
	34	REAL(wp), PUBLIC :: xsizedia !: Minimum size criteria for diatoms
	35	REAL(wp), PUBLIC :: xsizephy !: Minimum size criteria for nanophyto
	36	REAL(wp), PUBLIC :: xsizern !: Size ratio for nanophytoplankton
	37	REAL(wp), PUBLIC :: xsizerd !: Size ratio for diatoms
	38	REAL(wp), PUBLIC :: xksi1 !: half saturation constant for Si uptake
	39	REAL(wp), PUBLIC :: xksi2 !: half saturation constant for Si/C
	40	REAL(wp), PUBLIC :: xkdoc !: 2nd half-sat. of DOC remineralization
	41	REAL(wp), PUBLIC :: concbfe !: Fe half saturation for bacteria
	42	REAL(wp), PUBLIC :: qnfelim !: optimal Fe quota for nanophyto
	43	REAL(wp), PUBLIC :: qdfelim !: optimal Fe quota for diatoms
	44	REAL(wp), PUBLIC :: caco3r !: mean rainratio
	45
	46	!!* Phytoplankton limitation terms
[15459]	47	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xnanono3 !: Nanophyto limitation by NO3
	48	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xdiatno3 !: Diatoms limitation by NO3
	49	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xnanonh4 !: Nanophyto limitation by NH4
	50	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xdiatnh4 !: Diatoms limitation by NH4
	51	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xnanopo4 !: Nanophyto limitation by PO4
	52	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xdiatpo4 !: Diatoms limitation by PO4
	53	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimphy !: Nutrient limitation term of nanophytoplankton
	54	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimdia !: Nutrient limitation term of diatoms
	55	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimnfe !: Nanophyto limitation by Iron
	56	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimdfe !: Diatoms limitation by iron
	57	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimsi !: Diatoms limitation by Si
	58	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimbac !: Bacterial limitation term
	59	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xlimbacl !: Bacterial limitation term
	60	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: concdfe !: Limitation of diatoms uptake of Fe
	61	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: concnfe !: Limitation of Nano uptake of Fe
	62	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xnanofer !: Limitation of Fe uptake by nanophyto
	63	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xdiatfer !: Limitation of Fe uptake by diatoms
	64	REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xqfuncfecd, xqfuncfecn
[10227]	65
[15459]	66	! Coefficient for iron limitation following Flynn and Hipkin (1999)
[10227]	67	REAL(wp) :: xcoef1 = 0.0016 / 55.85
[15459]	68	REAL(wp) :: xcoef2 = 1.21E-5 * 14. / 55.85 / 7.3125 * 0.5 * 1.5
	69	REAL(wp) :: xcoef3 = 1.15E-4 * 14. / 55.85 / 7.3125 * 0.5
[10227]	70
[12377]	71	!! * Substitutions
	72	# include "do_loop_substitute.h90"
[10227]	73	!!----------------------------------------------------------------------
	74	!! NEMO/TOP 4.0 , NEMO Consortium (2018)
	75	!! $Id: p4zlim.F90 10069 2018-08-28 14:12:24Z nicolasmartin $
	76	!! Software governed by the CeCILL license (see ./LICENSE)
	77	!!----------------------------------------------------------------------
	78	CONTAINS
	79
[12377]	80	SUBROUTINE p4z_lim( kt, knt, Kbb, Kmm )
[10227]	81	!!---------------------------------------------------------------------
	82	!! * ROUTINE p4z_lim *
	83	!!
	84	!! ** Purpose : Compute the co-limitations by the various nutrients
[15459]	85	!! for the various phytoplankton species
[10227]	86	!!
[15459]	87	!! ** Method : - Limitation follows the Liebieg law of the minimum
	88	!! - Monod approach for N, P and Si. Quota approach
	89	!! for Iron
[10227]	90	!!---------------------------------------------------------------------
	91	INTEGER, INTENT(in) :: kt, knt
[12377]	92	INTEGER, INTENT(in) :: Kbb, Kmm ! time level indices
[10227]	93	!
	94	INTEGER :: ji, jj, jk
[15459]	95	REAL(wp) :: zlim1, zlim2, zlim3, zlim4, zcoef
[10227]	96	REAL(wp) :: z1_trbdia, z1_trbphy, ztem1, ztem2, zetot1, zetot2
[15459]	97	REAL(wp) :: zdenom, zratio, zironmin, zbactno3, zbactnh4
[10227]	98	REAL(wp) :: zconc1d, zconc1dnh4, zconc0n, zconc0nnh4
[15459]	99	REAL(wp) :: fananof, fadiatf, znutlim, zfalim
	100	REAL(wp) :: znutlimtot, zlimno3, zlimnh4, zbiron
[10227]	101	!!---------------------------------------------------------------------
	102	!
	103	IF( ln_timing ) CALL timing_start('p4z_lim')
	104	!
[15459]	105	sizena(:,:,:) = 1.0 ; sizeda(:,:,:) = 1.0
	106	!
[15090]	107	DO_3D( nn_hls, nn_hls, nn_hls, nn_hls, 1, jpkm1)
[12377]	108
	109	! Computation of a variable Ks for iron on diatoms taking into account
	110	! that increasing biomass is made of generally bigger cells
[15459]	111	! The allometric relationship is classical.
[12377]	112	!------------------------------------------------
	113	z1_trbphy = 1. / ( tr(ji,jj,jk,jpphy,Kbb) + rtrn )
	114	z1_trbdia = 1. / ( tr(ji,jj,jk,jpdia,Kbb) + rtrn )
[10227]	115
[15459]	116	concnfe(ji,jj,jk) = concnfer * sizen(ji,jj,jk)**0.81
	117	zconc0n = concnno3 * sizen(ji,jj,jk)**0.81
	118	zconc0nnh4 = concnnh4 * sizen(ji,jj,jk)**0.81
[10227]	119
[15459]	120	concdfe(ji,jj,jk) = concdfer * sized(ji,jj,jk)**0.81
	121	zconc1d = concdno3 * sized(ji,jj,jk)**0.81
	122	zconc1dnh4 = concdnh4 * sized(ji,jj,jk)**0.81
[10227]	123
[15459]	124	! Computation of the optimal allocation parameters
	125	! Based on the different papers by Pahlow et al., and
	126	! Smith et al.
	127	! ---------------------------------------------------
[10227]	128
[15459]	129	! Nanophytoplankton
	130	zbiron = ( 75.0 * ( 1.0 - plig(ji,jj,jk) ) + plig(ji,jj,jk) ) * biron(ji,jj,jk)
	131	znutlim = zbiron / concnfe(ji,jj,jk)
	132	fananof = MAX(0.01, MIN(0.99, 1. / ( SQRT(znutlim) + 1.) ) )
	133
	134	! Diatoms
	135	znutlim = zbiron / concdfe(ji,jj,jk)
	136	fadiatf = MAX(0.01, MIN(0.99, 1. / ( SQRT(znutlim) + 1.) ) )
	137
	138	! Michaelis-Menten Limitation term by nutrients of
	139	! heterotrophic bacteria
	140	! -------------------------------------------------
	141	zlimnh4 = tr(ji,jj,jk,jpnh4,Kbb) / ( concbno3 + tr(ji,jj,jk,jpnh4,Kbb) )
	142	zlimno3 = tr(ji,jj,jk,jpno3,Kbb) / ( concbno3 + tr(ji,jj,jk,jpno3,Kbb) )
	143	znutlimtot = ( tr(ji,jj,jk,jpnh4,Kbb) + tr(ji,jj,jk,jpno3,Kbb) ) / ( concbno3 + tr(ji,jj,jk,jpnh4,Kbb) + tr(ji,jj,jk,jpno3,Kbb) )
	144	zbactnh4 = znutlimtot * 5.0 * zlimnh4 / ( zlimno3 + 5.0 * zlimnh4 + rtrn )
	145	zbactno3 = znutlimtot * zlimno3 / ( zlimno3 + 5.0 * zlimnh4 + rtrn )
	146	!
	147	zlim1 = zbactno3 + zbactnh4
	148	zlim2 = tr(ji,jj,jk,jppo4,Kbb) / ( tr(ji,jj,jk,jppo4,Kbb) + concbnh4 )
	149	zlim3 = tr(ji,jj,jk,jpfer,Kbb) / ( concbfe + tr(ji,jj,jk,jpfer,Kbb) )
	150	zlim4 = tr(ji,jj,jk,jpdoc,Kbb) / ( xkdoc + tr(ji,jj,jk,jpdoc,Kbb) )
	151	! Xlimbac is used for DOC solubilization whereas xlimbacl
	152	! is used for all the other bacterial-dependent terms
	153	! -------------------------------------------------------
	154	xlimbacl(ji,jj,jk) = MIN( zlim1, zlim2, zlim3 )
	155	xlimbac (ji,jj,jk) = MIN( zlim1, zlim2, zlim3 ) * zlim4
	156
	157	! Michaelis-Menten Limitation term by nutrients: Nanophyto
	158	! Optimal parameterization by Smith and Pahlow series of
	159	! papers is used. Optimal allocation is supposed independant
	160	! for all nutrients.
	161	! --------------------------------------------------------
	162
	163	! Limitation of Fe uptake (Quota formalism)
	164	zfalim = (1.-fananof) / fananof
	165	xnanofer(ji,jj,jk) = (1. - fananof) * zbiron / ( zbiron + zfalim * concnfe(ji,jj,jk) )
	166
	167	! Limitation of nanophytoplankton growth
	168	zlimnh4 = tr(ji,jj,jk,jpnh4,Kbb) / ( zconc0n + tr(ji,jj,jk,jpnh4,Kbb) )
	169	zlimno3 = tr(ji,jj,jk,jpno3,Kbb) / ( zconc0n + tr(ji,jj,jk,jpno3,Kbb) )
	170	znutlimtot = ( tr(ji,jj,jk,jpnh4,Kbb) + tr(ji,jj,jk,jpno3,Kbb) ) / ( zconc0n + tr(ji,jj,jk,jpnh4,Kbb) + tr(ji,jj,jk,jpno3,Kbb) )
	171	xnanonh4(ji,jj,jk) = znutlimtot * 5.0 * zlimnh4 / ( zlimno3 + 5.0 * zlimnh4 + rtrn )
	172	xnanono3(ji,jj,jk) = znutlimtot * zlimno3 / ( zlimno3 + 5.0 * zlimnh4 + rtrn )
	173	!
	174	zlim1 = xnanono3(ji,jj,jk) + xnanonh4(ji,jj,jk)
	175	zlim2 = tr(ji,jj,jk,jppo4,Kbb) / ( tr(ji,jj,jk,jppo4,Kbb) + zconc0nnh4 )
	176	zratio = tr(ji,jj,jk,jpnfe,Kbb) * z1_trbphy
	177
	178	! The minimum iron quota depends on the size of PSU, respiration
	179	! and the reduction of nitrate following the parameterization
	180	! proposed by Flynn and Hipkin (1999)
	181	zironmin = xcoef1 * tr(ji,jj,jk,jpnch,Kbb) * z1_trbphy + xcoef2 * zlim1 + xcoef3 * xnanono3(ji,jj,jk)
	182	xqfuncfecn(ji,jj,jk) = zironmin + qnfelim
	183	zlim3 = MAX( 0.,( zratio - zironmin ) / qnfelim )
	184	xnanopo4(ji,jj,jk) = zlim2
	185	xlimnfe (ji,jj,jk) = MIN( 1., zlim3 )
	186	xlimphy (ji,jj,jk) = MIN( zlim1, zlim2, zlim3 )
	187
	188	! Michaelis-Menten Limitation term by nutrients : Diatoms
	189	! -------------------------------------------------------
	190	! Limitation of Fe uptake (Quota formalism)
	191	zfalim = (1.-fadiatf) / fadiatf
	192	xdiatfer(ji,jj,jk) = (1. - fadiatf) * zbiron / ( zbiron + zfalim * concdfe(ji,jj,jk) )
	193
	194	! Limitation of diatoms growth
	195	zlimnh4 = tr(ji,jj,jk,jpnh4,Kbb) / ( zconc1d + tr(ji,jj,jk,jpnh4,Kbb) )
	196	zlimno3 = tr(ji,jj,jk,jpno3,Kbb) / ( zconc1d + tr(ji,jj,jk,jpno3,Kbb) )
	197	znutlimtot = ( tr(ji,jj,jk,jpnh4,Kbb) + tr(ji,jj,jk,jpno3,Kbb) ) / ( zconc1d + tr(ji,jj,jk,jpnh4,Kbb) + tr(ji,jj,jk,jpno3,Kbb) )
	198	xdiatnh4(ji,jj,jk) = znutlimtot * 5.0 * zlimnh4 / ( zlimno3 + 5.0 * zlimnh4 + rtrn )
	199	xdiatno3(ji,jj,jk) = znutlimtot * zlimno3 / ( zlimno3 + 5.0 * zlimnh4 + rtrn )
	200	!
	201	zlim1 = xdiatno3(ji,jj,jk) + xdiatnh4(ji,jj,jk)
	202	zlim2 = tr(ji,jj,jk,jppo4,Kbb) / ( tr(ji,jj,jk,jppo4,Kbb) + zconc1dnh4 )
	203	zlim3 = tr(ji,jj,jk,jpsil,Kbb) / ( tr(ji,jj,jk,jpsil,Kbb) + xksi(ji,jj) + rtrn )
	204	zratio = tr(ji,jj,jk,jpdfe,Kbb) * z1_trbdia
	205
	206	! The minimum iron quota depends on the size of PSU, respiration
	207	! and the reduction of nitrate following the parameterization
	208	! proposed by Flynn and Hipkin (1999)
	209	zironmin = xcoef1 * tr(ji,jj,jk,jpdch,Kbb) * z1_trbdia + xcoef2 * zlim1 + xcoef3 * xdiatno3(ji,jj,jk)
	210	xqfuncfecd(ji,jj,jk) = zironmin + qdfelim
	211	zlim4 = MAX( 0., ( zratio - zironmin ) / qdfelim )
	212	xdiatpo4(ji,jj,jk) = zlim2
	213	xlimdfe (ji,jj,jk) = MIN( 1., zlim4 )
	214	xlimdia (ji,jj,jk) = MIN( zlim1, zlim2, zlim3, zlim4 )
	215	xlimsi (ji,jj,jk) = MIN( zlim1, zlim2, zlim4 )
[12377]	216	END_3D
[10227]	217
[15459]	218
	219	! Size estimation of phytoplankton based on total biomass
	220	! Assumes that larger biomass implies addition of larger cells
	221	! ------------------------------------------------------------
	222	DO_3D( nn_hls, nn_hls, nn_hls, nn_hls, 1, jpkm1)
	223	zcoef = tr(ji,jj,jk,jpphy,Kbb) - MIN(xsizephy, tr(ji,jj,jk,jpphy,Kbb) )
	224	sizena(ji,jj,jk) = 1. + ( xsizern -1.0 ) * zcoef / ( xsizephy + zcoef )
	225	zcoef = tr(ji,jj,jk,jpdia,Kbb) - MIN(xsizedia, tr(ji,jj,jk,jpdia,Kbb) )
	226	sizeda(ji,jj,jk) = 1. + ( xsizerd - 1.0 ) * zcoef / ( xsizedia + zcoef )
	227	END_3D
	228
	229
[10227]	230	! Compute the fraction of nanophytoplankton that is made of calcifiers
[15459]	231	! This is a purely adhoc formulation described in Aumont et al. (2015)
	232	! This fraction depends on nutrient limitation, light, temperature
[10227]	233	! --------------------------------------------------------------------
[15090]	234	DO_3D( nn_hls, nn_hls, nn_hls, nn_hls, 1, jpkm1)
[15459]	235	zlim1 = xnanonh4(ji,jj,jk) + xnanono3(ji,jj,jk)
[12377]	236	zlim2 = tr(ji,jj,jk,jppo4,Kbb) / ( tr(ji,jj,jk,jppo4,Kbb) + concnnh4 )
[15459]	237	zlim3 = tr(ji,jj,jk,jpfer,Kbb) / ( tr(ji,jj,jk,jpfer,Kbb) + 6.E-11 )
	238	ztem1 = MAX( 0., ts(ji,jj,jk,jp_tem,Kmm) + 1.8)
[12377]	239	ztem2 = ts(ji,jj,jk,jp_tem,Kmm) - 10.
	240	zetot1 = MAX( 0., etot_ndcy(ji,jj,jk) - 1.) / ( 4. + etot_ndcy(ji,jj,jk) )
[15459]	241	zetot2 = 30. / ( 30.0 + etot_ndcy(ji,jj,jk) )
[10227]	242
[12377]	243	xfracal(ji,jj,jk) = caco3r * MIN( zlim1, zlim2, zlim3 ) &
	244	& * ztem1 / ( 0.1 + ztem1 ) &
	245	& * MAX( 1., tr(ji,jj,jk,jpphy,Kbb) * 1.e6 / 2. ) &
	246	& * zetot1 * zetot2 &
	247	& * ( 1. + EXP(-ztem2 * ztem2 / 25. ) ) &
	248	& * MIN( 1., 50. / ( hmld(ji,jj) + rtrn ) )
	249	xfracal(ji,jj,jk) = MIN( 0.8 , xfracal(ji,jj,jk) )
	250	xfracal(ji,jj,jk) = MAX( 0.02, xfracal(ji,jj,jk) )
	251	END_3D
[10227]	252	!
[15090]	253	DO_3D( nn_hls, nn_hls, nn_hls, nn_hls, 1, jpkm1)
[12377]	254	! denitrification factor computed from O2 levels
	255	nitrfac(ji,jj,jk) = MAX( 0.e0, 0.4 * ( 6.e-6 - tr(ji,jj,jk,jpoxy,Kbb) ) &
	256	& / ( oxymin + tr(ji,jj,jk,jpoxy,Kbb) ) )
	257	nitrfac(ji,jj,jk) = MIN( 1., nitrfac(ji,jj,jk) )
	258	!
	259	! denitrification factor computed from NO3 levels
	260	nitrfac2(ji,jj,jk) = MAX( 0.e0, ( 1.E-6 - tr(ji,jj,jk,jpno3,Kbb) ) &
	261	& / ( 1.E-6 + tr(ji,jj,jk,jpno3,Kbb) ) )
	262	nitrfac2(ji,jj,jk) = MIN( 1., nitrfac2(ji,jj,jk) )
	263	END_3D
[10227]	264	!
	265	IF( lk_iomput .AND. knt == nrdttrc ) THEN ! save output diagnostics
[12276]	266	CALL iom_put( "xfracal", xfracal(:,:,:) * tmask(:,:,:) ) ! euphotic layer deptht
	267	CALL iom_put( "LNnut" , xlimphy(:,:,:) * tmask(:,:,:) ) ! Nutrient limitation term
	268	CALL iom_put( "LDnut" , xlimdia(:,:,:) * tmask(:,:,:) ) ! Nutrient limitation term
	269	CALL iom_put( "LNFe" , xlimnfe(:,:,:) * tmask(:,:,:) ) ! Iron limitation term
	270	CALL iom_put( "LDFe" , xlimdfe(:,:,:) * tmask(:,:,:) ) ! Iron limitation term
[15459]	271	CALL iom_put( "SIZEN" , sizen (:,:,:) * tmask(:,:,:) ) ! Iron limitation term
	272	CALL iom_put( "SIZED" , sized (:,:,:) * tmask(:,:,:) ) ! Iron limitation term
[10227]	273	ENDIF
	274	!
	275	IF( ln_timing ) CALL timing_stop('p4z_lim')
	276	!
	277	END SUBROUTINE p4z_lim
	278
	279
	280	SUBROUTINE p4z_lim_init
	281	!!----------------------------------------------------------------------
	282	!! * ROUTINE p4z_lim_init *
	283	!!
[15459]	284	!! ** Purpose : Initialization of the nutrient limitation parameters
[10227]	285	!!
[15459]	286	!! ** Method : Read the namp4zlim namelist and check the parameters
[10227]	287	!! called at the first timestep (nittrc000)
	288	!!
[15459]	289	!! ** input : Namelist namp4zlim
[10227]	290	!!
	291	!!----------------------------------------------------------------------
	292	INTEGER :: ios ! Local integer
[15459]	293
	294	! Namelist block
[10227]	295	NAMELIST/namp4zlim/ concnno3, concdno3, concnnh4, concdnh4, concnfer, concdfer, concbfe, &
	296	& concbno3, concbnh4, xsizedia, xsizephy, xsizern, xsizerd, &
	297	& xksi1, xksi2, xkdoc, qnfelim, qdfelim, caco3r, oxymin
	298	!!----------------------------------------------------------------------
	299	!
	300	IF(lwp) THEN
	301	WRITE(numout,*)
	302	WRITE(numout,*) 'p4z_lim_init : initialization of nutrient limitations'
	303	WRITE(numout,*) '~~~~~~~~~~~~'
	304	ENDIF
	305	!
	306	READ ( numnatp_ref, namp4zlim, IOSTAT = ios, ERR = 901)
[11536]	307	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namp4zlim in reference namelist' )
[10227]	308	READ ( numnatp_cfg, namp4zlim, IOSTAT = ios, ERR = 902 )
[11536]	309	902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namp4zlim in configuration namelist' )
[10227]	310	IF(lwm) WRITE( numonp, namp4zlim )
[15459]	311
[10227]	312	!
	313	IF(lwp) THEN ! control print
	314	WRITE(numout,*) ' Namelist : namp4zlim'
	315	WRITE(numout,*) ' mean rainratio caco3r = ', caco3r
	316	WRITE(numout,*) ' NO3 half saturation of nanophyto concnno3 = ', concnno3
	317	WRITE(numout,*) ' NO3 half saturation of diatoms concdno3 = ', concdno3
	318	WRITE(numout,*) ' NH4 half saturation for phyto concnnh4 = ', concnnh4
	319	WRITE(numout,*) ' NH4 half saturation for diatoms concdnh4 = ', concdnh4
	320	WRITE(numout,*) ' half saturation constant for Si uptake xksi1 = ', xksi1
	321	WRITE(numout,*) ' half saturation constant for Si/C xksi2 = ', xksi2
	322	WRITE(numout,*) ' half-sat. of DOC remineralization xkdoc = ', xkdoc
	323	WRITE(numout,*) ' Iron half saturation for nanophyto concnfer = ', concnfer
	324	WRITE(numout,*) ' Iron half saturation for diatoms concdfer = ', concdfer
	325	WRITE(numout,*) ' size ratio for nanophytoplankton xsizern = ', xsizern
	326	WRITE(numout,*) ' size ratio for diatoms xsizerd = ', xsizerd
	327	WRITE(numout,*) ' NO3 half saturation of bacteria concbno3 = ', concbno3
	328	WRITE(numout,*) ' NH4 half saturation for bacteria concbnh4 = ', concbnh4
	329	WRITE(numout,*) ' Minimum size criteria for diatoms xsizedia = ', xsizedia
	330	WRITE(numout,*) ' Minimum size criteria for nanophyto xsizephy = ', xsizephy
	331	WRITE(numout,*) ' Fe half saturation for bacteria concbfe = ', concbfe
	332	WRITE(numout,*) ' halk saturation constant for anoxia oxymin =' , oxymin
	333	WRITE(numout,*) ' optimal Fe quota for nano. qnfelim = ', qnfelim
	334	WRITE(numout,*) ' Optimal Fe quota for diatoms qdfelim = ', qdfelim
	335	ENDIF
	336	!
[12276]	337	nitrfac (:,:,jpk) = 0._wp
	338	nitrfac2(:,:,jpk) = 0._wp
	339	xfracal (:,:,jpk) = 0._wp
	340	xlimphy (:,:,jpk) = 0._wp
	341	xlimdia (:,:,jpk) = 0._wp
	342	xlimnfe (:,:,jpk) = 0._wp
	343	xlimdfe (:,:,jpk) = 0._wp
[10227]	344	!
	345	END SUBROUTINE p4z_lim_init
	346
	347
	348	INTEGER FUNCTION p4z_lim_alloc()
	349	!!----------------------------------------------------------------------
	350	!! * ROUTINE p5z_lim_alloc *
[15459]	351	!!
	352	! Allocation of the arrays used in this module
[10227]	353	!!----------------------------------------------------------------------
[10425]	354	USE lib_mpp , ONLY: ctl_stop
[10227]	355	!!----------------------------------------------------------------------
	356
	357	!* Biological arrays for phytoplankton growth
	358	ALLOCATE( xnanono3(jpi,jpj,jpk), xdiatno3(jpi,jpj,jpk), &
	359	& xnanonh4(jpi,jpj,jpk), xdiatnh4(jpi,jpj,jpk), &
	360	& xnanopo4(jpi,jpj,jpk), xdiatpo4(jpi,jpj,jpk), &
[15459]	361	& xnanofer(jpi,jpj,jpk), xdiatfer(jpi,jpj,jpk), &
[10227]	362	& xlimphy (jpi,jpj,jpk), xlimdia (jpi,jpj,jpk), &
	363	& xlimnfe (jpi,jpj,jpk), xlimdfe (jpi,jpj,jpk), &
	364	& xlimbac (jpi,jpj,jpk), xlimbacl(jpi,jpj,jpk), &
	365	& concnfe (jpi,jpj,jpk), concdfe (jpi,jpj,jpk), &
[15459]	366	& xqfuncfecn(jpi,jpj,jpk), xqfuncfecd(jpi,jpj,jpk), &
[10227]	367	& xlimsi (jpi,jpj,jpk), STAT=p4z_lim_alloc )
	368	!
[10425]	369	IF( p4z_lim_alloc /= 0 ) CALL ctl_stop( 'STOP', 'p4z_lim_alloc : failed to allocate arrays.' )
[10227]	370	!
	371	END FUNCTION p4z_lim_alloc
	372
	373	!!======================================================================
	374	END MODULE p4zlim

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source: NEMO/trunk/src/TOP/PISCES/P4Z/p4zlim.F90

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