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asminc.F90 in branches/UKMO/AMM15_v3_6_STABLE_package_collate_BGC_DA/NEMOGCM/NEMO/OPA_SRC/ASM – NEMO

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source: branches/UKMO/AMM15_v3_6_STABLE_package_collate_BGC_DA/NEMOGCM/NEMO/OPA_SRC/ASM/asminc.F90 @ 10622

Last change on this file since 10622 was 10622, checked in by dford, 5 years ago
Implement biogeochemistry assimilation for FABM-ERSEM.
File size: 60.7 KB

Rev	Line
[2128]	1	MODULE asminc
	2	!!======================================================================
	3	!! * MODULE asminc *
	4	!! Assimilation increment : Apply an increment generated by data
	5	!! assimilation
	6	!!======================================================================
[2392]	7	!! History : ! 2007-03 (M. Martin) Met Office version
	8	!! ! 2007-04 (A. Weaver) calc_date original code
	9	!! ! 2007-04 (A. Weaver) Merge with OPAVAR/NEMOVAR
	10	!! NEMO 3.3 ! 2010-05 (D. Lea) Update to work with NEMO v3.2
	11	!! - ! 2010-05 (D. Lea) add calc_month_len routine based on day_init
[3764]	12	!! 3.4 ! 2012-10 (A. Weaver and K. Mogensen) Fix for direct initialization
[2392]	13	!!----------------------------------------------------------------------
[2128]	14
	15	!!----------------------------------------------------------------------
[3785]	16	!! 'key_asminc' : Switch on the assimilation increment interface
[2128]	17	!!----------------------------------------------------------------------
[3785]	18	!! asm_inc_init : Initialize the increment arrays and IAU weights
	19	!! calc_date : Compute the calendar date YYYYMMDD on a given step
	20	!! tra_asm_inc : Apply the tracer (T and S) increments
	21	!! dyn_asm_inc : Apply the dynamic (u and v) increments
	22	!! ssh_asm_inc : Apply the SSH increment
	23	!! seaice_asm_inc : Apply the seaice increment
[2128]	24	!!----------------------------------------------------------------------
[3294]	25	USE wrk_nemo ! Memory Allocation
[2392]	26	USE par_oce ! Ocean space and time domain variables
	27	USE dom_oce ! Ocean space and time domain
[3785]	28	USE domvvl ! domain: variable volume level
[2392]	29	USE oce ! Dynamics and active tracers defined in memory
[3294]	30	USE ldfdyn_oce ! ocean dynamics: lateral physics
[2392]	31	USE eosbn2 ! Equation of state - in situ and potential density
	32	USE zpshde ! Partial step : Horizontal Derivative
	33	USE iom ! Library to read input files
	34	USE asmpar ! Parameters for the assmilation interface
[2435]	35	USE c1d ! 1D initialization
[2715]	36	USE in_out_manager ! I/O manager
[3764]	37	USE lib_mpp ! MPP library
	38	#if defined key_lim2
	39	USE ice_2 ! LIM2
	40	#endif
	41	USE sbc_oce ! Surface boundary condition variables.
[9181]	42	USE zdfmxl, ONLY : &
	43	& hmld_tref, &
	44	#if defined key_karaml
	45	& hmld_kara, &
	46	& ln_kara, &
	47	#endif
	48	& hmld, &
	49	& hmlp, &
	50	& hmlpt
	51	#if defined key_bdy
	52	USE bdy_oce, ONLY: bdytmask
	53	#endif
[10574]	54	USE asmbgc ! Biogeochemistry assimilation
[2128]	55
	56	IMPLICIT NONE
	57	PRIVATE
[2392]	58
	59	PUBLIC asm_inc_init !: Initialize the increment arrays and IAU weights
	60	PUBLIC calc_date !: Compute the calendar date YYYYMMDD on a given step
	61	PUBLIC tra_asm_inc !: Apply the tracer (T and S) increments
	62	PUBLIC dyn_asm_inc !: Apply the dynamic (u and v) increments
	63	PUBLIC ssh_asm_inc !: Apply the SSH increment
[3764]	64	PUBLIC seaice_asm_inc !: Apply the seaice increment
[10574]	65	PUBLIC bgc_asm_inc !: Apply the biogeochemistry increments
[2128]	66
	67	#if defined key_asminc
[2392]	68	LOGICAL, PUBLIC, PARAMETER :: lk_asminc = .TRUE. !: Logical switch for assimilation increment interface
[2128]	69	#else
[2392]	70	LOGICAL, PUBLIC, PARAMETER :: lk_asminc = .FALSE. !: No assimilation increments
[2128]	71	#endif
[4998]	72	LOGICAL, PUBLIC :: ln_bkgwri = .FALSE. !: No output of the background state fields
[9180]	73	LOGICAL, PUBLIC :: ln_avgbkg = .FALSE. !: No output of the mean background state fields
[4998]	74	LOGICAL, PUBLIC :: ln_asmiau = .FALSE. !: No applying forcing with an assimilation increment
	75	LOGICAL, PUBLIC :: ln_asmdin = .FALSE. !: No direct initialization
	76	LOGICAL, PUBLIC :: ln_trainc = .FALSE. !: No tracer (T and S) assimilation increments
	77	LOGICAL, PUBLIC :: ln_dyninc = .FALSE. !: No dynamics (u and v) assimilation increments
	78	LOGICAL, PUBLIC :: ln_sshinc = .FALSE. !: No sea surface height assimilation increment
	79	LOGICAL, PUBLIC :: ln_seaiceinc !: No sea ice concentration increment
[10574]	80	LOGICAL, PUBLIC :: lk_bgcinc = .FALSE. !: No biogeochemistry increments
[4998]	81	LOGICAL, PUBLIC :: ln_salfix = .FALSE. !: Apply minimum salinity check
[3764]	82	LOGICAL, PUBLIC :: ln_temnofreeze = .FALSE. !: Don't allow the temperature to drop below freezing
[4998]	83	INTEGER, PUBLIC :: nn_divdmp !: Apply divergence damping filter nn_divdmp times
[2128]	84
[2392]	85	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: t_bkg , s_bkg !: Background temperature and salinity
	86	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: u_bkg , v_bkg !: Background u- & v- velocity components
	87	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: t_bkginc, s_bkginc !: Increment to the background T & S
	88	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: u_bkginc, v_bkginc !: Increment to the u- & v-components
	89	REAL(wp), PUBLIC, DIMENSION(:) , ALLOCATABLE :: wgtiau !: IAU weights for each time step
[2128]	90	#if defined key_asminc
[2392]	91	REAL(wp), PUBLIC, DIMENSION(:,:), ALLOCATABLE :: ssh_iau !: IAU-weighted sea surface height increment
[2128]	92	#endif
[2392]	93	! !!! time steps relative to the cycle interval [0,nitend-nit000-1]
	94	INTEGER , PUBLIC :: nitbkg !: Time step of the background state used in the Jb term
	95	INTEGER , PUBLIC :: nitdin !: Time step of the background state for direct initialization
	96	INTEGER , PUBLIC :: nitiaustr !: Time step of the start of the IAU interval
	97	INTEGER , PUBLIC :: nitiaufin !: Time step of the end of the IAU interval
[9180]	98	INTEGER , PUBLIC :: nitavgbkg !: Number of timesteps to average assim bkg [0,nitavgbkg]
[2392]	99	!
	100	INTEGER , PUBLIC :: niaufn !: Type of IAU weighing function: = 0 Constant weighting
	101	! !: = 1 Linear hat-like, centred in middle of IAU interval
	102	REAL(wp), PUBLIC :: salfixmin !: Ensure that the salinity is larger than this value if (ln_salfix)
[2128]	103
[2392]	104	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ssh_bkg, ssh_bkginc ! Background sea surface height and its increment
[3764]	105	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: seaice_bkginc ! Increment to the background sea ice conc
[2128]	106
[9181]	107	INTEGER :: mld_choice = 4 !: choice of mld criteria to use for physics assimilation
	108	!: 1) hmld - Turbocline/mixing depth [W points]
	109	!: 2) hmlp - Density criterion (0.01 kg/m^3 change from 10m) [W points]
	110	!: 3) hmld_kara - Kara MLD [Interpolated]
	111	!: 4) hmld_tref - Temperature criterion (0.2 K change from surface) [T points]
	112
	113
[3294]	114	!! * Substitutions
	115	# include "domzgr_substitute.h90"
	116	# include "ldfdyn_substitute.h90"
	117	# include "vectopt_loop_substitute.h90"
[2287]	118	!!----------------------------------------------------------------------
	119	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
	120	!! $Id$
[2392]	121	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[2287]	122	!!----------------------------------------------------------------------
[2128]	123	CONTAINS
	124
	125	SUBROUTINE asm_inc_init
	126	!!----------------------------------------------------------------------
	127	!! * ROUTINE asm_inc_init *
	128	!!
	129	!! ** Purpose : Initialize the assimilation increment and IAU weights.
	130	!!
	131	!! ** Method : Initialize the assimilation increment and IAU weights.
	132	!!
	133	!! ** Action :
	134	!!----------------------------------------------------------------------
[4990]	135	INTEGER :: ji, jj, jk, jt ! dummy loop indices
	136	INTEGER :: imid, inum ! local integers
	137	INTEGER :: ios ! Local integer output status for namelist read
[2128]	138	INTEGER :: iiauper ! Number of time steps in the IAU period
	139	INTEGER :: icycper ! Number of time steps in the cycle
	140	INTEGER :: iitend_date ! Date YYYYMMDD of final time step
	141	INTEGER :: iitbkg_date ! Date YYYYMMDD of background time step for Jb term
	142	INTEGER :: iitdin_date ! Date YYYYMMDD of background time step for DI
	143	INTEGER :: iitiaustr_date ! Date YYYYMMDD of IAU interval start time step
	144	INTEGER :: iitiaufin_date ! Date YYYYMMDD of IAU interval final time step
[9181]	145	INTEGER :: isurfstat ! Local integer for status of reading surft variable
[9180]	146	INTEGER :: iitavgbkg_date ! Date YYYYMMDD of end of assim bkg averaging period
[4990]	147	!
[2128]	148	REAL(wp) :: znorm ! Normalization factor for IAU weights
[4990]	149	REAL(wp) :: ztotwgt ! Value of time-integrated IAU weights (should be equal to one)
[2128]	150	REAL(wp) :: z_inc_dateb ! Start date of interval on which increment is valid
	151	REAL(wp) :: z_inc_datef ! End date of interval on which increment is valid
	152	REAL(wp) :: zdate_bkg ! Date in background state file for DI
	153	REAL(wp) :: zdate_inc ! Time axis in increments file
[4990]	154	!
[9181]	155	REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: &
	156	& t_bkginc_2d ! file for reading in 2D
	157	! ! temperature increments
	158	REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: &
	159	& z_mld ! Mixed layer depth
	160
[4990]	161	REAL(wp), POINTER, DIMENSION(:,:) :: hdiv ! 2D workspace
[9181]	162	!
	163	LOGICAL :: lk_surft ! Logical: T => Increments file contains surft variable
	164	! so only apply surft increments.
[2392]	165	!!
[10574]	166	NAMELIST/nam_asminc/ ln_bkgwri, ln_avgbkg, ln_balwri, &
[2392]	167	& ln_trainc, ln_dyninc, ln_sshinc, &
[10574]	168	& ln_phytobal, ln_slchltotinc, ln_slchldiainc, &
[10622]	169	& ln_slchlnaninc, ln_slchlpicinc, ln_slchldininc, &
[10574]	170	& ln_slchlnoninc, ln_schltotinc, ln_slphytotinc, &
	171	& ln_slphydiainc, ln_slphynoninc, ln_spco2inc, &
	172	& ln_sfco2inc, ln_plchltotinc, ln_pchltotinc, &
	173	& ln_pno3inc, ln_psi4inc, ln_pdicinc, ln_palkinc, &
	174	& ln_pphinc, ln_po2inc, &
[2392]	175	& ln_asmdin, ln_asmiau, &
	176	& nitbkg, nitdin, nitiaustr, nitiaufin, niaufn, &
[10574]	177	& ln_salfix, salfixmin, nn_divdmp, nitavgbkg, &
	178	& mld_choice, mld_choice_bgc, rn_maxchlinc
[2392]	179	!!----------------------------------------------------------------------
[2128]	180
	181	!-----------------------------------------------------------------------
	182	! Read Namelist nam_asminc : assimilation increment interface
	183	!-----------------------------------------------------------------------
[9180]	184
	185	! Set default values
	186	ln_bkgwri = .FALSE.
	187	ln_avgbkg = .FALSE.
	188	ln_trainc = .FALSE.
	189	ln_dyninc = .FALSE.
	190	ln_sshinc = .FALSE.
[3764]	191	ln_seaiceinc = .FALSE.
[9180]	192	ln_asmdin = .FALSE.
	193	ln_asmiau = .TRUE.
	194	ln_salfix = .FALSE.
[3764]	195	ln_temnofreeze = .FALSE.
[9180]	196	salfixmin = -9999
	197	nitbkg = 0
	198	nitdin = 0
	199	nitiaustr = 1
	200	nitiaufin = 150
	201	niaufn = 0
	202	nitavgbkg = 1
[2128]	203
[4147]	204	REWIND( numnam_ref ) ! Namelist nam_asminc in reference namelist : Assimilation increment
	205	READ ( numnam_ref, nam_asminc, IOSTAT = ios, ERR = 901)
	206	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_asminc in reference namelist', lwp )
[2128]	207
[4147]	208	REWIND( numnam_cfg ) ! Namelist nam_asminc in configuration namelist : Assimilation increment
	209	READ ( numnam_cfg, nam_asminc, IOSTAT = ios, ERR = 902 )
	210	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_asminc in configuration namelist', lwp )
[4624]	211	IF(lwm) WRITE ( numond, nam_asminc )
[4147]	212
[2128]	213	! Control print
	214	IF(lwp) THEN
	215	WRITE(numout,*)
	216	WRITE(numout,*) 'asm_inc_init : Assimilation increment initialization :'
	217	WRITE(numout,*) '~~~~~~~~~~~~'
[10574]	218	WRITE(numout,*) ' Namelist nam_asminc : set assimilation increment parameters'
[2392]	219	WRITE(numout,*) ' Logical switch for writing out background state ln_bkgwri = ', ln_bkgwri
[9180]	220	WRITE(numout,*) ' Logical switch for writing mean background state ln_avgbkg = ', ln_avgbkg
[10574]	221	WRITE(numout,*) ' Logical switch for writing out balancing increments ln_balwri = ', ln_balwri
[2392]	222	WRITE(numout,*) ' Logical switch for applying tracer increments ln_trainc = ', ln_trainc
	223	WRITE(numout,*) ' Logical switch for applying velocity increments ln_dyninc = ', ln_dyninc
	224	WRITE(numout,*) ' Logical switch for applying SSH increments ln_sshinc = ', ln_sshinc
	225	WRITE(numout,*) ' Logical switch for Direct Initialization (DI) ln_asmdin = ', ln_asmdin
[3764]	226	WRITE(numout,*) ' Logical switch for applying sea ice increments ln_seaiceinc = ', ln_seaiceinc
[10574]	227	WRITE(numout,*) ' Logical switch for phytoplankton balancing ln_phytobal = ', ln_phytobal
	228	WRITE(numout,*) ' Logical switch for applying slchltot increments ln_slchltotinc = ', ln_slchltotinc
	229	WRITE(numout,*) ' Logical switch for applying slchldia increments ln_slchldiainc = ', ln_slchldiainc
	230	WRITE(numout,*) ' Logical switch for applying slchlnon increments ln_slchlnoninc = ', ln_slchlnoninc
[10622]	231	WRITE(numout,*) ' Logical switch for applying slchlnan increments ln_slchlnaninc = ', ln_slchlnaninc
	232	WRITE(numout,*) ' Logical switch for applying slchlpic increments ln_slchlpicinc = ', ln_slchlpicinc
	233	WRITE(numout,*) ' Logical switch for applying slchldin increments ln_slchldininc = ', ln_slchldininc
[10574]	234	WRITE(numout,*) ' Logical switch for applying schltot increments ln_schltotinc = ', ln_schltotinc
	235	WRITE(numout,*) ' Logical switch for applying slphytot increments ln_slphytotinc = ', ln_slphytotinc
	236	WRITE(numout,*) ' Logical switch for applying slphydia increments ln_slphydiainc = ', ln_slphydiainc
	237	WRITE(numout,*) ' Logical switch for applying slphynon increments ln_slphynoninc = ', ln_slphynoninc
	238	WRITE(numout,*) ' Logical switch for applying spco2 increments ln_spco2inc = ', ln_spco2inc
	239	WRITE(numout,*) ' Logical switch for applying sfco2 increments ln_sfco2inc = ', ln_sfco2inc
	240	WRITE(numout,*) ' Logical switch for applying plchltot increments ln_plchltotinc = ', ln_plchltotinc
	241	WRITE(numout,*) ' Logical switch for applying pchltot increments ln_pchltotinc = ', ln_pchltotinc
	242	WRITE(numout,*) ' Logical switch for applying pno3 increments ln_pno3inc = ', ln_pno3inc
	243	WRITE(numout,*) ' Logical switch for applying psi4 increments ln_psi4inc = ', ln_psi4inc
	244	WRITE(numout,*) ' Logical switch for applying pdic increments ln_pdicinc = ', ln_pdicinc
	245	WRITE(numout,*) ' Logical switch for applying palk increments ln_palkinc = ', ln_palkinc
	246	WRITE(numout,*) ' Logical switch for applying pph increments ln_pphinc = ', ln_pphinc
	247	WRITE(numout,*) ' Logical switch for applying po2 increments ln_po2inc = ', ln_po2inc
[2392]	248	WRITE(numout,*) ' Logical switch for Incremental Analysis Updating (IAU) ln_asmiau = ', ln_asmiau
	249	WRITE(numout,*) ' Timestep of background in [0,nitend-nit000-1] nitbkg = ', nitbkg
	250	WRITE(numout,*) ' Timestep of background for DI in [0,nitend-nit000-1] nitdin = ', nitdin
	251	WRITE(numout,*) ' Timestep of start of IAU interval in [0,nitend-nit000-1] nitiaustr = ', nitiaustr
	252	WRITE(numout,*) ' Timestep of end of IAU interval in [0,nitend-nit000-1] nitiaufin = ', nitiaufin
[9180]	253	WRITE(numout,*) ' Number of timesteps to average assim bkg [0,nitavgbkg] nitavgbkg = ', nitavgbkg
[2392]	254	WRITE(numout,*) ' Type of IAU weighting function niaufn = ', niaufn
	255	WRITE(numout,*) ' Logical switch for ensuring that the sa > salfixmin ln_salfix = ', ln_salfix
	256	WRITE(numout,*) ' Minimum salinity after applying the increments salfixmin = ', salfixmin
[9181]	257	WRITE(numout,*) ' Choice of MLD for physics assimilation mld_choice = ', mld_choice
[10574]	258	WRITE(numout,*) ' Choice of MLD for BGC assimilation mld_choice_bgc = ', mld_choice_bgc
	259	WRITE(numout,*) ' Maximum absolute chlorophyll increment (<=0 = off) rn_maxchlinc = ', rn_maxchlinc
[2128]	260	ENDIF
	261
	262	nitbkg_r = nitbkg + nit000 - 1 ! Background time referenced to nit000
	263	nitdin_r = nitdin + nit000 - 1 ! Background time for DI referenced to nit000
	264	nitiaustr_r = nitiaustr + nit000 - 1 ! Start of IAU interval referenced to nit000
	265	nitiaufin_r = nitiaufin + nit000 - 1 ! End of IAU interval referenced to nit000
[9180]	266	nitavgbkg_r = nitavgbkg + nit000 - 1 ! Averaging period referenced to nit000
[2128]	267
	268	iiauper = nitiaufin_r - nitiaustr_r + 1 ! IAU interval length
	269	icycper = nitend - nit000 + 1 ! Cycle interval length
	270
[4990]	271	CALL calc_date( nit000, nitend , ndate0, iitend_date ) ! Date of final time step
	272	CALL calc_date( nit000, nitbkg_r , ndate0, iitbkg_date ) ! Background time for Jb referenced to ndate0
	273	CALL calc_date( nit000, nitdin_r , ndate0, iitdin_date ) ! Background time for DI referenced to ndate0
	274	CALL calc_date( nit000, nitiaustr_r, ndate0, iitiaustr_date ) ! IAU start time referenced to ndate0
	275	CALL calc_date( nit000, nitiaufin_r, ndate0, iitiaufin_date ) ! IAU end time referenced to ndate0
[9180]	276	CALL calc_date( nit000, nitavgbkg_r, ndate0, iitavgbkg_date ) ! End of assim bkg averaging period referenced to ndate0
[4990]	277	!
[2128]	278	IF(lwp) THEN
	279	WRITE(numout,*)
	280	WRITE(numout,*) ' Time steps referenced to current cycle:'
	281	WRITE(numout,*) ' iitrst = ', nit000 - 1
	282	WRITE(numout,*) ' nit000 = ', nit000
	283	WRITE(numout,*) ' nitend = ', nitend
	284	WRITE(numout,*) ' nitbkg_r = ', nitbkg_r
	285	WRITE(numout,*) ' nitdin_r = ', nitdin_r
	286	WRITE(numout,*) ' nitiaustr_r = ', nitiaustr_r
	287	WRITE(numout,*) ' nitiaufin_r = ', nitiaufin_r
[9180]	288	WRITE(numout,*) ' nitavgbkg_r = ', nitavgbkg_r
[2128]	289	WRITE(numout,*)
	290	WRITE(numout,*) ' Dates referenced to current cycle:'
	291	WRITE(numout,*) ' ndastp = ', ndastp
	292	WRITE(numout,*) ' ndate0 = ', ndate0
	293	WRITE(numout,*) ' iitend_date = ', iitend_date
	294	WRITE(numout,*) ' iitbkg_date = ', iitbkg_date
	295	WRITE(numout,*) ' iitdin_date = ', iitdin_date
	296	WRITE(numout,*) ' iitiaustr_date = ', iitiaustr_date
	297	WRITE(numout,*) ' iitiaufin_date = ', iitiaufin_date
[9180]	298	WRITE(numout,*) ' iitavgbkg_date = ', iitavgbkg_date
[2128]	299	ENDIF
[10574]	300	IF ( ln_slchltotinc .OR. ln_slchldiainc .OR. ln_slchlnoninc .OR. &
[10622]	301	& ln_slchlnaninc .OR. ln_slchlpicinc .OR. ln_slchldininc .OR. &
[10574]	302	& ln_schltotinc .OR. ln_slphytotinc .OR. ln_slphydiainc .OR. &
	303	& ln_slphynoninc .OR. ln_spco2inc .OR. ln_sfco2inc .OR. &
	304	& ln_plchltotinc .OR. ln_pchltotinc .OR. ln_pno3inc .OR. &
	305	& ln_psi4inc .OR. ln_pdicinc .OR. ln_palkinc .OR. &
	306	& ln_pphinc .OR. ln_po2inc ) THEN
	307	lk_bgcinc = .TRUE.
	308	ENDIF
[2128]	309
	310	IF ( nacc /= 0 ) &
	311	& CALL ctl_stop( ' nacc /= 0 and key_asminc :', &
	312	& ' Assimilation increments have only been implemented', &
	313	& ' for synchronous time stepping' )
	314
	315	IF ( ( ln_asmdin ).AND.( ln_asmiau ) ) &
	316	& CALL ctl_stop( ' ln_asmdin and ln_asmiau :', &
	317	& ' Choose Direct Initialization OR Incremental Analysis Updating')
	318
	319	IF ( ( ( .NOT. ln_asmdin ).AND.( .NOT. ln_asmiau ) ) &
[10574]	320	& .AND.( ( ln_trainc ).OR.( ln_dyninc ).OR.( ln_sshinc ).OR.( ln_seaiceinc ).OR. &
	321	& ( lk_bgcinc ) )) &
	322	& CALL ctl_stop( ' One or more of ln_trainc, ln_dyninc, ln_sshinc, ln_seaiceinc,', &
	323	& ' ln_(bgc-variable)inc is set to .true.', &
[2128]	324	& ' but ln_asmdin and ln_asmiau are both set to .false. :', &
	325	& ' Inconsistent options')
	326
	327	IF ( ( niaufn /= 0 ).AND.( niaufn /= 1 ) ) &
	328	& CALL ctl_stop( ' niaufn /= 0 or niaufn /=1 :', &
	329	& ' Type IAU weighting function is invalid')
	330
[3764]	331	IF ( ( .NOT. ln_trainc ).AND.( .NOT. ln_dyninc ).AND.( .NOT. ln_sshinc ).AND.( .NOT. ln_seaiceinc ) &
[10574]	332	& .AND.( .NOT. lk_bgcinc ) ) &
	333	& CALL ctl_warn( ' ln_trainc, ln_dyninc, ln_sshinc, ln_seaiceinc,', &
	334	& ' ln_(bgc-variable)inc are set to .false. :', &
[2128]	335	& ' The assimilation increments are not applied')
	336
	337	IF ( ( ln_asmiau ).AND.( nitiaustr == nitiaufin ) ) &
	338	& CALL ctl_stop( ' nitiaustr = nitiaufin :', &
	339	& ' IAU interval is of zero length')
	340
	341	IF ( ( ln_asmiau ).AND.( ( nitiaustr_r < nit000 ).OR.( nitiaufin_r > nitend ) ) ) &
	342	& CALL ctl_stop( ' nitiaustr or nitiaufin :', &
	343	& ' IAU starting or final time step is outside the cycle interval', &
	344	& ' Valid range nit000 to nitend')
	345
	346	IF ( ( nitbkg_r < nit000 - 1 ).OR.( nitbkg_r > nitend ) ) &
	347	& CALL ctl_stop( ' nitbkg :', &
	348	& ' Background time step is outside the cycle interval')
	349
	350	IF ( ( nitdin_r < nit000 - 1 ).OR.( nitdin_r > nitend ) ) &
	351	& CALL ctl_stop( ' nitdin :', &
	352	& ' Background time step for Direct Initialization is outside', &
	353	& ' the cycle interval')
	354
[9180]	355	IF ( nitavgbkg_r > nitend ) &
	356	& CALL ctl_stop( ' nitavgbkg_r :', &
	357	& ' Assim bkg averaging period is outside', &
	358	& ' the cycle interval')
[10574]	359
	360	IF ( lk_bgcinc ) CALL asm_bgc_check_options
[9180]	361
[2128]	362	IF ( nstop > 0 ) RETURN ! if there are any errors then go no further
	363
	364	!--------------------------------------------------------------------
	365	! Initialize the Incremental Analysis Updating weighting function
	366	!--------------------------------------------------------------------
	367
	368	IF ( ln_asmiau ) THEN
	369
	370	ALLOCATE( wgtiau( icycper ) )
	371
	372	wgtiau(:) = 0.0
	373
	374	IF ( niaufn == 0 ) THEN
	375
	376	!---------------------------------------------------------
	377	! Constant IAU forcing
	378	!---------------------------------------------------------
	379
	380	DO jt = 1, iiauper
	381	wgtiau(jt+nitiaustr-1) = 1.0 / REAL( iiauper )
	382	END DO
	383
	384	ELSEIF ( niaufn == 1 ) THEN
	385
	386	!---------------------------------------------------------
	387	! Linear hat-like, centred in middle of IAU interval
	388	!---------------------------------------------------------
	389
	390	! Compute the normalization factor
	391	znorm = 0.0
	392	IF ( MOD( iiauper, 2 ) == 0 ) THEN ! Even number of time steps in IAU interval
	393	imid = iiauper / 2
	394	DO jt = 1, imid
	395	znorm = znorm + REAL( jt )
	396	END DO
	397	znorm = 2.0 * znorm
	398	ELSE ! Odd number of time steps in IAU interval
	399	imid = ( iiauper + 1 ) / 2
	400	DO jt = 1, imid - 1
	401	znorm = znorm + REAL( jt )
	402	END DO
	403	znorm = 2.0 * znorm + REAL( imid )
	404	ENDIF
	405	znorm = 1.0 / znorm
	406
	407	DO jt = 1, imid - 1
	408	wgtiau(jt+nitiaustr-1) = REAL( jt ) * znorm
	409	END DO
	410	DO jt = imid, iiauper
	411	wgtiau(jt+nitiaustr-1) = REAL( iiauper - jt + 1 ) * znorm
	412	END DO
	413
	414	ENDIF
	415
	416	! Test that the integral of the weights over the weighting interval equals 1
	417	IF(lwp) THEN
	418	WRITE(numout,*)
	419	WRITE(numout,*) 'asm_inc_init : IAU weights'
	420	WRITE(numout,*) '~~~~~~~~~~~~'
	421	WRITE(numout,*) ' time step IAU weight'
	422	WRITE(numout,*) ' ========= ====================='
	423	ztotwgt = 0.0
	424	DO jt = 1, icycper
	425	ztotwgt = ztotwgt + wgtiau(jt)
	426	WRITE(numout,*) ' ', jt, ' ', wgtiau(jt)
	427	END DO
	428	WRITE(numout,*) ' ==================================='
	429	WRITE(numout,*) ' Time-integrated weight = ', ztotwgt
	430	WRITE(numout,*) ' ==================================='
	431	ENDIF
	432
	433	ENDIF
	434
	435	!--------------------------------------------------------------------
	436	! Allocate and initialize the increment arrays
	437	!--------------------------------------------------------------------
	438
[9181]	439	IF ( ln_trainc ) THEN
	440	ALLOCATE( t_bkginc(jpi,jpj,jpk) )
	441	ALLOCATE( s_bkginc(jpi,jpj,jpk) )
	442	t_bkginc(:,:,:) = 0.0
	443	s_bkginc(:,:,:) = 0.0
	444	ENDIF
	445	IF ( ln_dyninc ) THEN
	446	ALLOCATE( u_bkginc(jpi,jpj,jpk) )
	447	ALLOCATE( v_bkginc(jpi,jpj,jpk) )
	448	u_bkginc(:,:,:) = 0.0
	449	v_bkginc(:,:,:) = 0.0
	450	ENDIF
	451	IF ( ln_sshinc ) THEN
	452	ALLOCATE( ssh_bkginc(jpi,jpj) )
	453	ssh_bkginc(:,:) = 0.0
	454	ENDIF
	455	IF ( ln_seaiceinc ) THEN
	456	ALLOCATE( seaice_bkginc(jpi,jpj))
	457	seaice_bkginc(:,:) = 0.0
	458	ENDIF
[2128]	459	#if defined key_asminc
	460	ALLOCATE( ssh_iau(jpi,jpj) )
	461	ssh_iau(:,:) = 0.0
	462	#endif
[10574]	463	IF ( ( ln_trainc ).OR.( ln_dyninc ).OR.( ln_sshinc ).OR.( ln_seaiceinc ) &
	464	& .OR.( lk_bgcinc ) ) THEN
[2128]	465
	466	!--------------------------------------------------------------------
	467	! Read the increments from file
	468	!--------------------------------------------------------------------
	469
	470	CALL iom_open( c_asminc, inum )
	471
	472	CALL iom_get( inum, 'time', zdate_inc )
	473
	474	CALL iom_get( inum, 'z_inc_dateb', z_inc_dateb )
	475	CALL iom_get( inum, 'z_inc_datef', z_inc_datef )
	476	z_inc_dateb = zdate_inc
	477	z_inc_datef = zdate_inc
	478
	479	IF(lwp) THEN
	480	WRITE(numout,*)
	481	WRITE(numout,*) 'asm_inc_init : Assimilation increments valid ', &
	482	& ' between dates ', NINT( z_inc_dateb ),' and ', &
	483	& NINT( z_inc_datef )
	484	WRITE(numout,*) '~~~~~~~~~~~~'
	485	ENDIF
	486
	487	IF ( ( NINT( z_inc_dateb ) < ndastp ) &
	488	& .OR.( NINT( z_inc_datef ) > iitend_date ) ) &
	489	& CALL ctl_warn( ' Validity time of assimilation increments is ', &
	490	& ' outside the assimilation interval' )
	491
	492	IF ( ( ln_asmdin ).AND.( NINT( zdate_inc ) /= iitdin_date ) ) &
	493	& CALL ctl_warn( ' Validity time of assimilation increments does ', &
	494	& ' not agree with Direct Initialization time' )
	495
	496	IF ( ln_trainc ) THEN
[9181]	497
	498	!Test if the increments file contains the surft variable.
	499	isurfstat = iom_varid( inum, 'bckinsurft', ldstop = .FALSE. )
	500	IF ( isurfstat == -1 ) THEN
	501	lk_surft = .FALSE.
	502	ELSE
	503	lk_surft = .TRUE.
	504	CALL ctl_warn( ' Applying 2D temperature increment to bottom of ML: ', &
	505	& ' bckinsurft found in increments file.' )
	506	ENDIF
	507
	508	IF (lk_surft) THEN
	509
	510	ALLOCATE(z_mld(jpi,jpj))
	511	SELECT CASE(mld_choice)
	512	CASE(1)
	513	z_mld = hmld
	514	CASE(2)
	515	z_mld = hmlp
	516	CASE(3)
	517	#if defined key_karaml
	518	IF ( ln_kara ) THEN
	519	z_mld = hmld_kara
	520	ELSE
	521	CALL ctl_stop("Kara mixed layer not calculated as ln_kara=.false.")
	522	ENDIF
	523	#else
	524	CALL ctl_stop("Kara mixed layer not defined in current version of NEMO") ! JW: Safety feature, should be removed
	525	! once the Kara mixed layer is available
	526	#endif
	527	CASE(4)
	528	z_mld = hmld_tref
	529	END SELECT
	530
	531	ALLOCATE( t_bkginc_2d(jpi,jpj) )
	532	CALL iom_get( inum, jpdom_autoglo, 'bckinsurft', t_bkginc_2d, 1)
	533	#if defined key_bdy
	534	DO jk = 1,jpkm1
	535	WHERE( z_mld(:,:) > fsdepw(:,:,jk) )
	536	t_bkginc(:,:,jk) = t_bkginc_2d(:,:) * 0.5 * &
	537	& ( 1 + cos( (fsdept(:,:,jk)/z_mld(:,:) ) * rpi ) )
	538
	539	t_bkginc(:,:,jk) = t_bkginc(:,:,jk) * bdytmask(:,:)
	540	ELSEWHERE
	541	t_bkginc(:,:,jk) = 0.
	542	ENDWHERE
	543	ENDDO
	544	#else
	545	t_bkginc(:,:,:) = 0.
	546	#endif
	547	s_bkginc(:,:,:) = 0.
	548
	549	DEALLOCATE(z_mld, t_bkginc_2d)
	550
	551	ELSE
	552
	553	CALL iom_get( inum, jpdom_autoglo, 'bckint', t_bkginc, 1 )
	554	CALL iom_get( inum, jpdom_autoglo, 'bckins', s_bkginc, 1 )
	555	! Apply the masks
	556	t_bkginc(:,:,:) = t_bkginc(:,:,:) * tmask(:,:,:)
	557	s_bkginc(:,:,:) = s_bkginc(:,:,:) * tmask(:,:,:)
	558	! Set missing increments to 0.0 rather than 1e+20
	559	! to allow for differences in masks
	560	WHERE( ABS( t_bkginc(:,:,:) ) > 1.0e+10 ) t_bkginc(:,:,:) = 0.0
	561	WHERE( ABS( s_bkginc(:,:,:) ) > 1.0e+10 ) s_bkginc(:,:,:) = 0.0
	562
	563	ENDIF
	564
[2128]	565	ENDIF
	566
	567	IF ( ln_dyninc ) THEN
	568	CALL iom_get( inum, jpdom_autoglo, 'bckinu', u_bkginc, 1 )
	569	CALL iom_get( inum, jpdom_autoglo, 'bckinv', v_bkginc, 1 )
	570	! Apply the masks
	571	u_bkginc(:,:,:) = u_bkginc(:,:,:) * umask(:,:,:)
	572	v_bkginc(:,:,:) = v_bkginc(:,:,:) * vmask(:,:,:)
	573	! Set missing increments to 0.0 rather than 1e+20
	574	! to allow for differences in masks
	575	WHERE( ABS( u_bkginc(:,:,:) ) > 1.0e+10 ) u_bkginc(:,:,:) = 0.0
	576	WHERE( ABS( v_bkginc(:,:,:) ) > 1.0e+10 ) v_bkginc(:,:,:) = 0.0
	577	ENDIF
	578
	579	IF ( ln_sshinc ) THEN
	580	CALL iom_get( inum, jpdom_autoglo, 'bckineta', ssh_bkginc, 1 )
	581	! Apply the masks
	582	ssh_bkginc(:,:) = ssh_bkginc(:,:) * tmask(:,:,1)
	583	! Set missing increments to 0.0 rather than 1e+20
	584	! to allow for differences in masks
	585	WHERE( ABS( ssh_bkginc(:,:) ) > 1.0e+10 ) ssh_bkginc(:,:) = 0.0
	586	ENDIF
	587
[3764]	588	IF ( ln_seaiceinc ) THEN
	589	CALL iom_get( inum, jpdom_autoglo, 'bckinseaice', seaice_bkginc, 1 )
	590	! Apply the masks
	591	seaice_bkginc(:,:) = seaice_bkginc(:,:) * tmask(:,:,1)
	592	! Set missing increments to 0.0 rather than 1e+20
	593	! to allow for differences in masks
	594	WHERE( ABS( seaice_bkginc(:,:) ) > 1.0e+10 ) seaice_bkginc(:,:) = 0.0
	595	ENDIF
	596
[10574]	597	IF ( lk_bgcinc ) THEN
	598	CALL asm_bgc_init_incs( inum )
	599	ENDIF
	600
[2128]	601	CALL iom_close( inum )
	602
	603	ENDIF
	604
	605	!-----------------------------------------------------------------------
[3294]	606	! Apply divergence damping filter
	607	!-----------------------------------------------------------------------
	608
	609	IF ( ln_dyninc .AND. nn_divdmp > 0 ) THEN
	610
[3764]	611	CALL wrk_alloc(jpi,jpj,hdiv)
[3294]	612
[3764]	613	DO jt = 1, nn_divdmp
[3294]	614
[3764]	615	DO jk = 1, jpkm1
[3294]	616
[3764]	617	hdiv(:,:) = 0._wp
[3294]	618
[3764]	619	DO jj = 2, jpjm1
	620	DO ji = fs_2, fs_jpim1 ! vector opt.
	621	hdiv(ji,jj) = &
	622	( e2u(ji ,jj ) * fse3u(ji ,jj ,jk) * u_bkginc(ji ,jj ,jk) &
	623	- e2u(ji-1,jj ) * fse3u(ji-1,jj ,jk) * u_bkginc(ji-1,jj ,jk) &
	624	+ e1v(ji ,jj ) * fse3v(ji ,jj ,jk) * v_bkginc(ji ,jj ,jk) &
	625	- e1v(ji ,jj-1) * fse3v(ji ,jj-1,jk) * v_bkginc(ji ,jj-1,jk) ) &
	626	/ ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) )
	627	END DO
[3294]	628	END DO
	629
[3764]	630	CALL lbc_lnk( hdiv, 'T', 1. ) ! lateral boundary cond. (no sign change)
[3294]	631
[3764]	632	DO jj = 2, jpjm1
	633	DO ji = fs_2, fs_jpim1 ! vector opt.
	634	u_bkginc(ji,jj,jk) = u_bkginc(ji,jj,jk) + 0.2_wp * ( e1t(ji+1,jj)e2t(ji+1,jj) hdiv(ji+1,jj) &
	635	- e1t(ji ,jj)e2t(ji ,jj) hdiv(ji ,jj) ) &
	636	/ e1u(ji,jj) * umask(ji,jj,jk)
	637	v_bkginc(ji,jj,jk) = v_bkginc(ji,jj,jk) + 0.2_wp * ( e1t(ji,jj+1)e2t(ji,jj+1) hdiv(ji,jj+1) &
	638	- e1t(ji,jj )e2t(ji,jj ) hdiv(ji,jj ) ) &
	639	/ e2v(ji,jj) * vmask(ji,jj,jk)
	640	END DO
[3294]	641	END DO
[3764]	642
[3294]	643	END DO
	644
[3764]	645	END DO
[3294]	646
[3764]	647	CALL wrk_dealloc(jpi,jpj,hdiv)
[3294]	648
	649	ENDIF
	650
	651
	652
	653	!-----------------------------------------------------------------------
[2128]	654	! Allocate and initialize the background state arrays
	655	!-----------------------------------------------------------------------
	656
	657	IF ( ln_asmdin ) THEN
	658
	659	ALLOCATE( t_bkg(jpi,jpj,jpk) )
	660	ALLOCATE( s_bkg(jpi,jpj,jpk) )
	661	ALLOCATE( u_bkg(jpi,jpj,jpk) )
	662	ALLOCATE( v_bkg(jpi,jpj,jpk) )
	663	ALLOCATE( ssh_bkg(jpi,jpj) )
	664
	665	t_bkg(:,:,:) = 0.0
	666	s_bkg(:,:,:) = 0.0
	667	u_bkg(:,:,:) = 0.0
	668	v_bkg(:,:,:) = 0.0
	669	ssh_bkg(:,:) = 0.0
	670
	671	!--------------------------------------------------------------------
	672	! Read from file the background state at analysis time
	673	!--------------------------------------------------------------------
	674
	675	CALL iom_open( c_asmdin, inum )
	676
[3764]	677	CALL iom_get( inum, 'rdastp', zdate_bkg )
[2128]	678
	679	IF(lwp) THEN
	680	WRITE(numout,*)
	681	WRITE(numout,*) 'asm_inc_init : Assimilation background state valid at : ', &
	682	& NINT( zdate_bkg )
	683	WRITE(numout,*) '~~~~~~~~~~~~'
	684	ENDIF
	685
	686	IF ( NINT( zdate_bkg ) /= iitdin_date ) &
	687	& CALL ctl_warn( ' Validity time of assimilation background state does', &
	688	& ' not agree with Direct Initialization time' )
	689
	690	IF ( ln_trainc ) THEN
	691	CALL iom_get( inum, jpdom_autoglo, 'tn', t_bkg )
	692	CALL iom_get( inum, jpdom_autoglo, 'sn', s_bkg )
	693	t_bkg(:,:,:) = t_bkg(:,:,:) * tmask(:,:,:)
	694	s_bkg(:,:,:) = s_bkg(:,:,:) * tmask(:,:,:)
	695	ENDIF
	696
	697	IF ( ln_dyninc ) THEN
	698	CALL iom_get( inum, jpdom_autoglo, 'un', u_bkg )
	699	CALL iom_get( inum, jpdom_autoglo, 'vn', v_bkg )
	700	u_bkg(:,:,:) = u_bkg(:,:,:) * umask(:,:,:)
	701	v_bkg(:,:,:) = v_bkg(:,:,:) * vmask(:,:,:)
	702	ENDIF
	703
	704	IF ( ln_sshinc ) THEN
	705	CALL iom_get( inum, jpdom_autoglo, 'sshn', ssh_bkg )
	706	ssh_bkg(:,:) = ssh_bkg(:,:) * tmask(:,:,1)
	707	ENDIF
	708
	709	CALL iom_close( inum )
	710
	711	ENDIF
[10574]	712
	713	IF ( lk_bgcinc ) THEN
	714	CALL asm_bgc_init_bkg
	715	ENDIF
[2392]	716	!
[2128]	717	END SUBROUTINE asm_inc_init
	718
[2392]	719
[2128]	720	SUBROUTINE calc_date( kit000, kt, kdate0, kdate )
	721	!!----------------------------------------------------------------------
	722	!! * ROUTINE calc_date *
	723	!!
	724	!! ** Purpose : Compute the calendar date YYYYMMDD at a given time step.
	725	!!
	726	!! ** Method : Compute the calendar date YYYYMMDD at a given time step.
	727	!!
	728	!! ** Action :
	729	!!----------------------------------------------------------------------
	730	INTEGER, INTENT(IN) :: kit000 ! Initial time step
	731	INTEGER, INTENT(IN) :: kt ! Current time step referenced to kit000
	732	INTEGER, INTENT(IN) :: kdate0 ! Initial date
	733	INTEGER, INTENT(OUT) :: kdate ! Current date reference to kdate0
[2392]	734	!
[2128]	735	INTEGER :: iyea0 ! Initial year
	736	INTEGER :: imon0 ! Initial month
	737	INTEGER :: iday0 ! Initial day
	738	INTEGER :: iyea ! Current year
	739	INTEGER :: imon ! Current month
	740	INTEGER :: iday ! Current day
	741	INTEGER :: idaystp ! Number of days between initial and current date
	742	INTEGER :: idaycnt ! Day counter
	743
	744	INTEGER, DIMENSION(12) :: imonth_len !: length in days of the months of the current year
	745
	746	!-----------------------------------------------------------------------
	747	! Compute the calendar date YYYYMMDD
	748	!-----------------------------------------------------------------------
	749
	750	! Initial date
	751	iyea0 = kdate0 / 10000
	752	imon0 = ( kdate0 - ( iyea0 * 10000 ) ) / 100
	753	iday0 = kdate0 - ( iyea0 * 10000 ) - ( imon0 * 100 )
	754
	755	! Check that kt >= kit000 - 1
	756	IF ( kt < kit000 - 1 ) CALL ctl_stop( ' kt must be >= kit000 - 1')
	757
	758	! If kt = kit000 - 1 then set the date to the restart date
	759	IF ( kt == kit000 - 1 ) THEN
	760
	761	kdate = ndastp
	762	RETURN
	763
	764	ENDIF
	765
	766	! Compute the number of days from the initial date
	767	idaystp = INT( REAL( kt - kit000 ) * rdt / 86400. )
	768
	769	iday = iday0
	770	imon = imon0
	771	iyea = iyea0
	772	idaycnt = 0
	773
	774	CALL calc_month_len( iyea, imonth_len )
	775
	776	DO WHILE ( idaycnt < idaystp )
	777	iday = iday + 1
	778	IF ( iday > imonth_len(imon) ) THEN
	779	iday = 1
	780	imon = imon + 1
	781	ENDIF
	782	IF ( imon > 12 ) THEN
	783	imon = 1
	784	iyea = iyea + 1
	785	CALL calc_month_len( iyea, imonth_len ) ! update month lengths
	786	ENDIF
	787	idaycnt = idaycnt + 1
	788	END DO
[2392]	789	!
[2128]	790	kdate = iyea * 10000 + imon * 100 + iday
[2392]	791	!
[2128]	792	END SUBROUTINE
	793
[2392]	794
[2128]	795	SUBROUTINE calc_month_len( iyear, imonth_len )
	796	!!----------------------------------------------------------------------
	797	!! * ROUTINE calc_month_len *
	798	!!
	799	!! ** Purpose : Compute the number of days in a months given a year.
	800	!!
	801	!! ** Method :
	802	!!----------------------------------------------------------------------
	803	INTEGER, DIMENSION(12) :: imonth_len !: length in days of the months of the current year
	804	INTEGER :: iyear !: year
[2392]	805	!!----------------------------------------------------------------------
	806	!
[2128]	807	! length of the month of the current year (from nleapy, read in namelist)
	808	IF ( nleapy < 2 ) THEN
	809	imonth_len(:) = (/ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 /)
	810	IF ( nleapy == 1 ) THEN ! we are using calendar with leap years
	811	IF ( MOD(iyear, 4) == 0 .AND. ( MOD(iyear, 400) == 0 .OR. MOD(iyear, 100) /= 0 ) ) THEN
	812	imonth_len(2) = 29
	813	ENDIF
	814	ENDIF
	815	ELSE
	816	imonth_len(:) = nleapy ! all months with nleapy days per year
	817	ENDIF
[2392]	818	!
[2128]	819	END SUBROUTINE
	820
[2392]	821
[2128]	822	SUBROUTINE tra_asm_inc( kt )
	823	!!----------------------------------------------------------------------
	824	!! * ROUTINE tra_asm_inc *
	825	!!
	826	!! ** Purpose : Apply the tracer (T and S) assimilation increments
	827	!!
	828	!! ** Method : Direct initialization or Incremental Analysis Updating
	829	!!
	830	!! ** Action :
	831	!!----------------------------------------------------------------------
	832	INTEGER, INTENT(IN) :: kt ! Current time step
[2392]	833	!
[2128]	834	INTEGER :: ji,jj,jk
	835	INTEGER :: it
	836	REAL(wp) :: zincwgt ! IAU weight for current time step
[3764]	837	REAL (wp), DIMENSION(jpi,jpj,jpk) :: fzptnz ! 3d freezing point values
[2392]	838	!!----------------------------------------------------------------------
[2128]	839
[3764]	840	! freezing point calculation taken from oc_fz_pt (but calculated for all depths)
	841	! used to prevent the applied increments taking the temperature below the local freezing point
	842
[4990]	843	DO jk = 1, jpkm1
[5540]	844	CALL eos_fzp( tsn(:,:,jk,jp_sal), fzptnz(:,:,jk), fsdept(:,:,jk) )
[4990]	845	END DO
[3764]	846
[2128]	847	IF ( ln_asmiau ) THEN
	848
	849	!--------------------------------------------------------------------
	850	! Incremental Analysis Updating
	851	!--------------------------------------------------------------------
	852
	853	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
	854
	855	it = kt - nit000 + 1
	856	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
	857
	858	IF(lwp) THEN
	859	WRITE(numout,*)
[4990]	860	WRITE(numout,*) 'tra_asm_inc : Tracer IAU at time step = ', kt,' with IAU weight = ', wgtiau(it)
[2128]	861	WRITE(numout,*) '~~~~~~~~~~~~'
	862	ENDIF
	863
	864	! Update the tracer tendencies
	865	DO jk = 1, jpkm1
[3764]	866	IF (ln_temnofreeze) THEN
	867	! Do not apply negative increments if the temperature will fall below freezing
	868	WHERE(t_bkginc(:,:,jk) > 0.0_wp .OR. &
	869	& tsn(:,:,jk,jp_tem) + tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * wgtiau(it) > fzptnz(:,:,jk) )
	870	tsa(:,:,jk,jp_tem) = tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * zincwgt
	871	END WHERE
	872	ELSE
	873	tsa(:,:,jk,jp_tem) = tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * zincwgt
	874	ENDIF
	875	IF (ln_salfix) THEN
	876	! Do not apply negative increments if the salinity will fall below a specified
	877	! minimum value salfixmin
	878	WHERE(s_bkginc(:,:,jk) > 0.0_wp .OR. &
	879	& tsn(:,:,jk,jp_sal) + tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * wgtiau(it) > salfixmin )
	880	tsa(:,:,jk,jp_sal) = tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * zincwgt
	881	END WHERE
	882	ELSE
	883	tsa(:,:,jk,jp_sal) = tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * zincwgt
	884	ENDIF
[2128]	885	END DO
	886
	887	ENDIF
	888
	889	IF ( kt == nitiaufin_r + 1 ) THEN ! For bias crcn to work
	890	DEALLOCATE( t_bkginc )
	891	DEALLOCATE( s_bkginc )
	892	ENDIF
	893
	894
	895	ELSEIF ( ln_asmdin ) THEN
	896
	897	!--------------------------------------------------------------------
	898	! Direct Initialization
	899	!--------------------------------------------------------------------
	900
	901	IF ( kt == nitdin_r ) THEN
	902
	903	neuler = 0 ! Force Euler forward step
	904
	905	! Initialize the now fields with the background + increment
[3764]	906	IF (ln_temnofreeze) THEN
	907	! Do not apply negative increments if the temperature will fall below freezing
[4990]	908	WHERE( t_bkginc(:,:,:) > 0.0_wp .OR. tsn(:,:,:,jp_tem) + t_bkginc(:,:,:) > fzptnz(:,:,:) )
[3764]	909	tsn(:,:,:,jp_tem) = t_bkg(:,:,:) + t_bkginc(:,:,:)
	910	END WHERE
	911	ELSE
	912	tsn(:,:,:,jp_tem) = t_bkg(:,:,:) + t_bkginc(:,:,:)
	913	ENDIF
[2128]	914	IF (ln_salfix) THEN
[3764]	915	! Do not apply negative increments if the salinity will fall below a specified
	916	! minimum value salfixmin
[4990]	917	WHERE( s_bkginc(:,:,:) > 0.0_wp .OR. tsn(:,:,:,jp_sal) + s_bkginc(:,:,:) > salfixmin )
[3764]	918	tsn(:,:,:,jp_sal) = s_bkg(:,:,:) + s_bkginc(:,:,:)
	919	END WHERE
	920	ELSE
	921	tsn(:,:,:,jp_sal) = s_bkg(:,:,:) + s_bkginc(:,:,:)
[2128]	922	ENDIF
	923
[4990]	924	tsb(:,:,:,:) = tsn(:,:,:,:) ! Update before fields
[2128]	925
[4990]	926	CALL eos( tsb, rhd, rhop, gdept_0(:,:,:) ) ! Before potential and in situ densities
	927	!!gm fabien
	928	! CALL eos( tsb, rhd, rhop ) ! Before potential and in situ densities
	929	!!gm
	930
	931
[5120]	932	IF( ln_zps .AND. .NOT. lk_c1d .AND. .NOT. ln_isfcav) &
	933	& CALL zps_hde ( kt, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient
	934	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
	935	IF( ln_zps .AND. .NOT. lk_c1d .AND. ln_isfcav) &
	936	& CALL zps_hde_isf( nit000, jpts, tsb, gtsu, gtsv, & ! Partial steps for top cell (ISF)
	937	& rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , &
	938	& gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level
[2128]	939
[3764]	940	#if defined key_zdfkpp
[4313]	941	CALL eos( tsn, rhd, fsdept_n(:,:,:) ) ! Compute rhd
[4990]	942	!!gm fabien CALL eos( tsn, rhd ) ! Compute rhd
[3764]	943	#endif
	944
[2128]	945	DEALLOCATE( t_bkginc )
	946	DEALLOCATE( s_bkginc )
	947	DEALLOCATE( t_bkg )
	948	DEALLOCATE( s_bkg )
	949	ENDIF
[2392]	950	!
[2128]	951	ENDIF
[3764]	952	! Perhaps the following call should be in step
	953	IF ( ln_seaiceinc ) CALL seaice_asm_inc ( kt ) ! apply sea ice concentration increment
[2392]	954	!
[2128]	955	END SUBROUTINE tra_asm_inc
	956
[2392]	957
[2128]	958	SUBROUTINE dyn_asm_inc( kt )
	959	!!----------------------------------------------------------------------
	960	!! * ROUTINE dyn_asm_inc *
	961	!!
	962	!! ** Purpose : Apply the dynamics (u and v) assimilation increments.
	963	!!
	964	!! ** Method : Direct initialization or Incremental Analysis Updating.
	965	!!
	966	!! ** Action :
	967	!!----------------------------------------------------------------------
	968	INTEGER, INTENT(IN) :: kt ! Current time step
[2392]	969	!
[2128]	970	INTEGER :: jk
	971	INTEGER :: it
	972	REAL(wp) :: zincwgt ! IAU weight for current time step
[2392]	973	!!----------------------------------------------------------------------
[2128]	974
	975	IF ( ln_asmiau ) THEN
	976
	977	!--------------------------------------------------------------------
	978	! Incremental Analysis Updating
	979	!--------------------------------------------------------------------
	980
	981	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
	982
	983	it = kt - nit000 + 1
	984	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
	985
	986	IF(lwp) THEN
	987	WRITE(numout,*)
	988	WRITE(numout,*) 'dyn_asm_inc : Dynamics IAU at time step = ', &
	989	& kt,' with IAU weight = ', wgtiau(it)
	990	WRITE(numout,*) '~~~~~~~~~~~~'
	991	ENDIF
	992
	993	! Update the dynamic tendencies
	994	DO jk = 1, jpkm1
	995	ua(:,:,jk) = ua(:,:,jk) + u_bkginc(:,:,jk) * zincwgt
	996	va(:,:,jk) = va(:,:,jk) + v_bkginc(:,:,jk) * zincwgt
	997	END DO
	998
	999	IF ( kt == nitiaufin_r ) THEN
	1000	DEALLOCATE( u_bkginc )
	1001	DEALLOCATE( v_bkginc )
	1002	ENDIF
	1003
	1004	ENDIF
	1005
	1006	ELSEIF ( ln_asmdin ) THEN
	1007
	1008	!--------------------------------------------------------------------
	1009	! Direct Initialization
	1010	!--------------------------------------------------------------------
	1011
	1012	IF ( kt == nitdin_r ) THEN
	1013
	1014	neuler = 0 ! Force Euler forward step
	1015
	1016	! Initialize the now fields with the background + increment
	1017	un(:,:,:) = u_bkg(:,:,:) + u_bkginc(:,:,:)
	1018	vn(:,:,:) = v_bkg(:,:,:) + v_bkginc(:,:,:)
	1019
	1020	ub(:,:,:) = un(:,:,:) ! Update before fields
	1021	vb(:,:,:) = vn(:,:,:)
	1022
	1023	DEALLOCATE( u_bkg )
	1024	DEALLOCATE( v_bkg )
	1025	DEALLOCATE( u_bkginc )
	1026	DEALLOCATE( v_bkginc )
	1027	ENDIF
[2392]	1028	!
[2128]	1029	ENDIF
[2392]	1030	!
[2128]	1031	END SUBROUTINE dyn_asm_inc
	1032
[2392]	1033
[2128]	1034	SUBROUTINE ssh_asm_inc( kt )
	1035	!!----------------------------------------------------------------------
	1036	!! * ROUTINE ssh_asm_inc *
	1037	!!
	1038	!! ** Purpose : Apply the sea surface height assimilation increment.
	1039	!!
	1040	!! ** Method : Direct initialization or Incremental Analysis Updating.
	1041	!!
	1042	!! ** Action :
	1043	!!----------------------------------------------------------------------
	1044	INTEGER, INTENT(IN) :: kt ! Current time step
[2392]	1045	!
[2128]	1046	INTEGER :: it
[3764]	1047	INTEGER :: jk
[2128]	1048	REAL(wp) :: zincwgt ! IAU weight for current time step
[2392]	1049	!!----------------------------------------------------------------------
[2128]	1050
	1051	IF ( ln_asmiau ) THEN
	1052
	1053	!--------------------------------------------------------------------
	1054	! Incremental Analysis Updating
	1055	!--------------------------------------------------------------------
	1056
	1057	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
	1058
	1059	it = kt - nit000 + 1
	1060	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
	1061
	1062	IF(lwp) THEN
	1063	WRITE(numout,*)
	1064	WRITE(numout,*) 'ssh_asm_inc : SSH IAU at time step = ', &
	1065	& kt,' with IAU weight = ', wgtiau(it)
	1066	WRITE(numout,*) '~~~~~~~~~~~~'
	1067	ENDIF
	1068
	1069	! Save the tendency associated with the IAU weighted SSH increment
	1070	! (applied in dynspg.*)
	1071	#if defined key_asminc
	1072	ssh_iau(:,:) = ssh_bkginc(:,:) * zincwgt
	1073	#endif
	1074	IF ( kt == nitiaufin_r ) THEN
	1075	DEALLOCATE( ssh_bkginc )
	1076	ENDIF
	1077
[9537]	1078	#if defined key_asminc
[9196]	1079	ELSE
	1080	ssh_iau(:,:) = 0._wp
[9537]	1081	#endif
[2128]	1082	ENDIF
	1083
	1084	ELSEIF ( ln_asmdin ) THEN
	1085
	1086	!--------------------------------------------------------------------
	1087	! Direct Initialization
	1088	!--------------------------------------------------------------------
	1089
	1090	IF ( kt == nitdin_r ) THEN
	1091
	1092	neuler = 0 ! Force Euler forward step
	1093
	1094	! Initialize the now fields the background + increment
	1095	sshn(:,:) = ssh_bkg(:,:) + ssh_bkginc(:,:)
	1096
[3764]	1097	! Update before fields
	1098	sshb(:,:) = sshn(:,:)
[2128]	1099
[3764]	1100	IF( lk_vvl ) THEN
	1101	DO jk = 1, jpk
	1102	fse3t_b(:,:,jk) = fse3t_n(:,:,jk)
	1103	END DO
	1104	ENDIF
	1105
[2128]	1106	DEALLOCATE( ssh_bkg )
	1107	DEALLOCATE( ssh_bkginc )
	1108
	1109	ENDIF
[2392]	1110	!
[2128]	1111	ENDIF
[2392]	1112	!
[2128]	1113	END SUBROUTINE ssh_asm_inc
	1114
[3785]	1115
[3764]	1116	SUBROUTINE seaice_asm_inc( kt, kindic )
	1117	!!----------------------------------------------------------------------
	1118	!! * ROUTINE seaice_asm_inc *
	1119	!!
	1120	!! ** Purpose : Apply the sea ice assimilation increment.
	1121	!!
	1122	!! ** Method : Direct initialization or Incremental Analysis Updating.
	1123	!!
	1124	!! ** Action :
	1125	!!
	1126	!!----------------------------------------------------------------------
	1127	IMPLICIT NONE
[3785]	1128	!
	1129	INTEGER, INTENT(in) :: kt ! Current time step
	1130	INTEGER, INTENT(in), OPTIONAL :: kindic ! flag for disabling the deallocation
	1131	!
	1132	INTEGER :: it
	1133	REAL(wp) :: zincwgt ! IAU weight for current time step
	1134	#if defined key_lim2
	1135	REAL(wp), DIMENSION(jpi,jpj) :: zofrld, zohicif, zseaicendg, zhicifinc ! LIM
	1136	REAL(wp) :: zhicifmin = 0.5_wp ! ice minimum depth in metres
[3764]	1137	#endif
[3785]	1138	!!----------------------------------------------------------------------
[3764]	1139
	1140	IF ( ln_asmiau ) THEN
	1141
	1142	!--------------------------------------------------------------------
	1143	! Incremental Analysis Updating
	1144	!--------------------------------------------------------------------
	1145
	1146	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
	1147
	1148	it = kt - nit000 + 1
	1149	zincwgt = wgtiau(it) ! IAU weight for the current time step
	1150	! note this is not a tendency so should not be divided by rdt (as with the tracer and other increments)
	1151
	1152	IF(lwp) THEN
	1153	WRITE(numout,*)
	1154	WRITE(numout,*) 'seaice_asm_inc : sea ice conc IAU at time step = ', &
	1155	& kt,' with IAU weight = ', wgtiau(it)
	1156	WRITE(numout,*) '~~~~~~~~~~~~'
	1157	ENDIF
	1158
[3785]	1159	! Sea-ice : LIM-3 case (to add)
[3764]	1160
[3785]	1161	#if defined key_lim2
	1162	! Sea-ice : LIM-2 case
	1163	zofrld (:,:) = frld(:,:)
	1164	zohicif(:,:) = hicif(:,:)
	1165	!
	1166	frld = MIN( MAX( frld (:,:) - seaice_bkginc(:,:) * zincwgt, 0.0_wp), 1.0_wp)
[3764]	1167	pfrld = MIN( MAX( pfrld(:,:) - seaice_bkginc(:,:) * zincwgt, 0.0_wp), 1.0_wp)
	1168	fr_i(:,:) = 1.0_wp - frld(:,:) ! adjust ice fraction
[3785]	1169	!
	1170	zseaicendg(:,:) = zofrld(:,:) - frld(:,:) ! find out actual sea ice nudge applied
	1171	!
[3764]	1172	! Nudge sea ice depth to bring it up to a required minimum depth
	1173	WHERE( zseaicendg(:,:) > 0.0_wp .AND. hicif(:,:) < zhicifmin )
	1174	zhicifinc(:,:) = (zhicifmin - hicif(:,:)) * zincwgt
	1175	ELSEWHERE
	1176	zhicifinc(:,:) = 0.0_wp
	1177	END WHERE
[3785]	1178	!
	1179	! nudge ice depth
	1180	hicif (:,:) = hicif (:,:) + zhicifinc(:,:)
	1181	phicif(:,:) = phicif(:,:) + zhicifinc(:,:)
	1182	!
	1183	! seaice salinity balancing (to add)
[3764]	1184	#endif
	1185
[4245]	1186	#if defined key_cice && defined key_asminc
[3785]	1187	! Sea-ice : CICE case. Pass ice increment tendency into CICE
[3764]	1188	ndaice_da(:,:) = seaice_bkginc(:,:) * zincwgt / rdt
	1189	#endif
	1190
	1191	IF ( kt == nitiaufin_r ) THEN
	1192	DEALLOCATE( seaice_bkginc )
	1193	ENDIF
	1194
	1195	ELSE
	1196
[4245]	1197	#if defined key_cice && defined key_asminc
[3785]	1198	! Sea-ice : CICE case. Zero ice increment tendency into CICE
[3764]	1199	ndaice_da(:,:) = 0.0_wp
	1200	#endif
	1201
	1202	ENDIF
	1203
	1204	ELSEIF ( ln_asmdin ) THEN
	1205
	1206	!--------------------------------------------------------------------
	1207	! Direct Initialization
	1208	!--------------------------------------------------------------------
	1209
	1210	IF ( kt == nitdin_r ) THEN
	1211
	1212	neuler = 0 ! Force Euler forward step
	1213
[3785]	1214	! Sea-ice : LIM-3 case (to add)
[3764]	1215
[3785]	1216	#if defined key_lim2
	1217	! Sea-ice : LIM-2 case.
[3764]	1218	zofrld(:,:)=frld(:,:)
	1219	zohicif(:,:)=hicif(:,:)
[3785]	1220	!
[3764]	1221	! Initialize the now fields the background + increment
[3785]	1222	frld (:,:) = MIN( MAX( frld(:,:) - seaice_bkginc(:,:), 0.0_wp), 1.0_wp)
[3764]	1223	pfrld(:,:) = frld(:,:)
[3785]	1224	fr_i (:,:) = 1.0_wp - frld(:,:) ! adjust ice fraction
	1225	zseaicendg(:,:) = zofrld(:,:) - frld(:,:) ! find out actual sea ice nudge applied
	1226	!
[3764]	1227	! Nudge sea ice depth to bring it up to a required minimum depth
	1228	WHERE( zseaicendg(:,:) > 0.0_wp .AND. hicif(:,:) < zhicifmin )
	1229	zhicifinc(:,:) = (zhicifmin - hicif(:,:)) * zincwgt
	1230	ELSEWHERE
	1231	zhicifinc(:,:) = 0.0_wp
	1232	END WHERE
[3785]	1233	!
	1234	! nudge ice depth
	1235	hicif (:,:) = hicif (:,:) + zhicifinc(:,:)
	1236	phicif(:,:) = phicif(:,:)
	1237	!
	1238	! seaice salinity balancing (to add)
[3764]	1239	#endif
	1240
[4245]	1241	#if defined key_cice && defined key_asminc
	1242	! Sea-ice : CICE case. Pass ice increment tendency into CICE
[3764]	1243	ndaice_da(:,:) = seaice_bkginc(:,:) / rdt
	1244	#endif
	1245	IF ( .NOT. PRESENT(kindic) ) THEN
	1246	DEALLOCATE( seaice_bkginc )
	1247	END IF
	1248
	1249	ELSE
	1250
[4245]	1251	#if defined key_cice && defined key_asminc
[3785]	1252	! Sea-ice : CICE case. Zero ice increment tendency into CICE
[3764]	1253	ndaice_da(:,:) = 0.0_wp
	1254	#endif
	1255
	1256	ENDIF
	1257
[3785]	1258	!#if defined defined key_lim2 \|\| defined key_cice
[3764]	1259	!
	1260	! IF (ln_seaicebal ) THEN
	1261	! !! balancing salinity increments
	1262	! !! simple case from limflx.F90 (doesn't include a mass flux)
	1263	! !! assumption is that as ice concentration is reduced or increased
	1264	! !! the snow and ice depths remain constant
	1265	! !! note that snow is being created where ice concentration is being increased
	1266	! !! - could be more sophisticated and
	1267	! !! not do this (but would need to alter h_snow)
	1268	!
	1269	! usave(:,:,:)=sb(:,:,:) ! use array as a temporary store
	1270	!
	1271	! DO jj = 1, jpj
	1272	! DO ji = 1, jpi
	1273	! ! calculate change in ice and snow mass per unit area
	1274	! ! positive values imply adding salt to the ocean (results from ice formation)
	1275	! ! fwf : ice formation and melting
	1276	!
	1277	! zfons = ( -nfresh_da(ji,jj)soce + nfsalt_da(ji,jj) )rdt
	1278	!
	1279	! ! change salinity down to mixed layer depth
	1280	! mld=hmld_kara(ji,jj)
	1281	!
	1282	! ! prevent small mld
	1283	! ! less than 10m can cause salinity instability
	1284	! IF (mld < 10) mld=10
	1285	!
	1286	! ! set to bottom of a level
	1287	! DO jk = jpk-1, 2, -1
	1288	! IF ((mld > gdepw(ji,jj,jk)) .and. (mld < gdepw(ji,jj,jk+1))) THEN
	1289	! mld=gdepw(ji,jj,jk+1)
	1290	! jkmax=jk
	1291	! ENDIF
	1292	! ENDDO
	1293	!
	1294	! ! avoid applying salinity balancing in shallow water or on land
	1295	! !
	1296	!
	1297	! ! dsal_ocn (psu kg m^-2) / (kg m^-3 * m)
	1298	!
	1299	! dsal_ocn=0.0_wp
	1300	! sal_thresh=5.0_wp ! minimum salinity threshold for salinity balancing
	1301	!
	1302	! if (tmask(ji,jj,1) > 0 .AND. tmask(ji,jj,jkmax) > 0 ) &
	1303	! dsal_ocn = zfons / (rhop(ji,jj,1) * mld)
	1304	!
	1305	! ! put increments in for levels in the mixed layer
	1306	! ! but prevent salinity below a threshold value
	1307	!
	1308	! DO jk = 1, jkmax
	1309	!
	1310	! IF (dsal_ocn > 0.0_wp .or. sb(ji,jj,jk)+dsal_ocn > sal_thresh) THEN
	1311	! sb(ji,jj,jk) = sb(ji,jj,jk) + dsal_ocn
	1312	! sn(ji,jj,jk) = sn(ji,jj,jk) + dsal_ocn
	1313	! ENDIF
	1314	!
	1315	! ENDDO
	1316	!
	1317	! ! ! salt exchanges at the ice/ocean interface
	1318	! ! zpmess = zfons / rdt_ice ! rdt_ice is ice timestep
	1319	! !
	1320	! !! Adjust fsalt. A +ve fsalt means adding salt to ocean
	1321	! !! fsalt(ji,jj) = fsalt(ji,jj) + zpmess ! adjust fsalt
	1322	! !!
	1323	! !! emps(ji,jj) = emps(ji,jj) + zpmess ! or adjust emps (see icestp1d)
	1324	! !! ! E-P (kg m-2 s-2)
	1325	! ! emp(ji,jj) = emp(ji,jj) + zpmess ! E-P (kg m-2 s-2)
	1326	! ENDDO !ji
	1327	! ENDDO !jj!
	1328	!
	1329	! ENDIF !ln_seaicebal
	1330	!
	1331	!#endif
	1332
	1333	ENDIF
	1334
	1335	END SUBROUTINE seaice_asm_inc
[10574]	1336
	1337
	1338	SUBROUTINE bgc_asm_inc( kt )
	1339	!!----------------------------------------------------------------------
	1340	!! * ROUTINE bgc_asm_inc *
	1341	!!
	1342	!! ** Purpose : Apply the biogeochemistry assimilation increments
	1343	!!
	1344	!! ** Method : Call relevant routines in asmbgc
	1345	!!
	1346	!! ** Action : Call relevant routines in asmbgc
	1347	!!
	1348	!!----------------------------------------------------------------------
	1349	!!
	1350	INTEGER, INTENT(in ) :: kt ! Current time step
	1351	!
	1352	INTEGER :: icycper ! Dimension of wgtiau
	1353	!!
	1354	!!----------------------------------------------------------------------
	1355
	1356	icycper = SIZE( wgtiau )
	1357
	1358	! Ocean colour variables first
	1359	IF ( ln_slchltotinc .OR. ln_slchldiainc .OR. ln_slchlnoninc .OR. &
[10622]	1360	& ln_slchlnaninc .OR. ln_slchlpicinc .OR. ln_slchldininc .OR. &
[10574]	1361	& ln_schltotinc .OR. ln_slphytotinc .OR. ln_slphydiainc .OR. &
	1362	& ln_slphynoninc ) THEN
	1363	CALL phyto2d_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau )
	1364	ENDIF
	1365
	1366	! Surface pCO2/fCO2 next
	1367	IF ( ln_sfco2inc .OR. ln_spco2inc ) THEN
	1368	CALL pco2_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau, &
	1369	& ln_trainc, t_bkginc, s_bkginc )
	1370	ENDIF
	1371
	1372	! Profile pH next
	1373	IF ( ln_pphinc ) THEN
	1374	CALL ph_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau, &
	1375	& ln_trainc, t_bkginc, s_bkginc )
	1376	ENDIF
	1377
	1378	! Then chlorophyll profiles
	1379	IF ( ln_plchltotinc .OR. ln_pchltotinc ) THEN
	1380	CALL phyto3d_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau )
	1381	ENDIF
	1382
	1383	! Remaining bgc profile variables
	1384	IF ( ln_pno3inc .OR. ln_psi4inc .OR. ln_pdicinc .OR. &
	1385	& ln_palkinc .OR. ln_po2inc ) THEN
	1386	CALL bgc3d_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau )
	1387	ENDIF
	1388
	1389	END SUBROUTINE bgc_asm_inc
[3785]	1390
[2392]	1391	!!======================================================================
[2128]	1392	END MODULE asminc

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