New URL for NEMO forge! http://forge.nemo-ocean.eu

Since March 2022 along with NEMO 4.2 release, the code development moved to a self-hosted GitLab.
This present forge is now archived and remained online for history.

asmlogchlbal_medusa.F90 in branches/UKMO/dev_r5518_GO6_package_asm_surf_bgc/NEMOGCM/NEMO/OPA_SRC/ASM – NEMO

Context Navigation

source: branches/UKMO/dev_r5518_GO6_package_asm_surf_bgc/NEMOGCM/NEMO/OPA_SRC/ASM/asmlogchlbal_medusa.F90 @ 8440

Last change on this file since 8440 was 8440, checked in by dford, 7 years ago
Add more variables to assimilation background, so it includes all required elements of the background state.
File size: 23.2 KB

Rev	Line
[8436]	1	MODULE asmlogchlbal_medusa
[8428]	2	!!======================================================================
[8436]	3	!! * MODULE asmlogchlbal_medusa *
	4	!! Calculate increments to MEDUSA based on surface logchl increments
[8428]	5	!!
	6	!! IMPORTANT NOTE: This calls the bioanalysis routine of Hemmings et al.
	7	!! For licensing reasons this is kept in its own internal Met Office
	8	!! branch (dev/frdf/vn3.6_nitrogen_balancing) rather than in the Paris
	9	!! repository, and must be merged in when building.
	10	!!
	11	!!======================================================================
[8436]	12	!! History : 3.6 ! 2017-08 (D. Ford) Adapted from asmlogchlbal_hadocc
[8428]	13	!!----------------------------------------------------------------------
[8436]	14	#if defined key_asminc && defined key_medusa && defined key_foam_medusa
[8428]	15	!!----------------------------------------------------------------------
	16	!! 'key_asminc' : assimilation increment interface
[8436]	17	!! 'key_medusa' : MEDUSA model
	18	!! 'key_foam_medusa' : MEDUSA extras for FOAM OBS and ASM
[8428]	19	!!----------------------------------------------------------------------
[8436]	20	!! asm_logchl_bal_medusa : routine to calculate increments to MEDUSA
[8428]	21	!!----------------------------------------------------------------------
	22	USE par_kind, ONLY: wp ! kind parameters
	23	USE par_oce, ONLY: jpi, jpj, jpk ! domain array sizes
	24	USE dom_oce, ONLY: gdepw_n ! domain information
	25	USE zdfmxl ! mixed layer depth
	26	USE iom ! i/o
[8436]	27	USE sms_medusa ! MEDUSA parameters
	28	USE par_medusa ! MEDUSA parameters
[8428]	29	USE par_trc, ONLY: jptra ! Tracer parameters
	30	USE bioanalysis ! Nitrogen balancing
	31
	32	IMPLICIT NONE
	33	PRIVATE
	34
[8436]	35	PUBLIC asm_logchl_bal_medusa
[8428]	36
	37	! Default values for biological assimilation parameters
	38	! Should match Hemmings et al. (2008)
	39	REAL(wp), PARAMETER :: balnutext = 0.6 !: Default nutrient balancing factor
	40	REAL(wp), PARAMETER :: balnutmin = 0.1 !: Fraction of phytoplankton loss to nutrient
	41	REAL(wp), PARAMETER :: r = 1 !: Reliability of model specific growth rate
	42	REAL(wp), PARAMETER :: beta_g = 0.05 !: Low rate bias correction for growth rate estimator
	43	REAL(wp), PARAMETER :: beta_l = 0.05 !: Low rate bias correction for primary loss rate estimator
	44	REAL(wp), PARAMETER :: beta_m = 0.05 !: Low rate bias correction for secondary loss rate estimator
	45	REAL(wp), PARAMETER :: a_g = 0.2 !: Error s.d. for log10 of growth rate estimator
	46	REAL(wp), PARAMETER :: a_l = 0.4 !: Error s.d. for log10 of primary loss rate estimator
	47	REAL(wp), PARAMETER :: a_m = 0.7 !: Error s.d. for log10 of secondary loss rate estimator
	48	REAL(wp), PARAMETER :: zfracb0 = 0.7 !: Base zooplankton fraction of loss to Z & D
	49	REAL(wp), PARAMETER :: zfracb1 = 0 !: Phytoplankton sensitivity of zooplankton fraction
	50	REAL(wp), PARAMETER :: qrfmax = 1.1 !: Maximum nutrient limitation reduction factor
	51	REAL(wp), PARAMETER :: qafmax = 1.1 !: Maximum nutrient limitation amplification factor
	52	REAL(wp), PARAMETER :: zrfmax = 2 !: Maximum zooplankton reduction factor
	53	REAL(wp), PARAMETER :: zafmax = 2 !: Maximum zooplankton amplification factor
	54	REAL(wp), PARAMETER :: prfmax = 10 !: Maximum phytoplankton reduction factor (secondary)
	55	REAL(wp), PARAMETER :: incphymin = 0.0001 !: Minimum size of non-zero phytoplankton increment
	56	REAL(wp), PARAMETER :: integnstep = 20 !: Number of steps for p.d.f. integral evaluation
	57	REAL(wp), PARAMETER :: pthreshold = 0.01 !: Fractional threshold level for setting p.d.f.
	58	!
	59	LOGICAL, PARAMETER :: diag_active = .TRUE. !: Depth-independent diagnostics
	60	LOGICAL, PARAMETER :: diag_fulldepth_active = .TRUE. !: Full-depth diagnostics
	61	LOGICAL, PARAMETER :: gl_active = .TRUE. !: Growth/loss-based balancing
	62	LOGICAL, PARAMETER :: nbal_active = .TRUE. !: Nitrogen balancing
	63	LOGICAL, PARAMETER :: subsurf_active = .TRUE. !: Increments below MLD
	64	LOGICAL, PARAMETER :: deepneg_active = .FALSE. !: Negative primary increments below MLD
	65	LOGICAL, PARAMETER :: deeppos_active = .FALSE. !: Positive primary increments below MLD
	66	LOGICAL, PARAMETER :: nutprof_active = .TRUE. !: Secondary increments
	67
	68	CONTAINS
	69
[8436]	70	SUBROUTINE asm_logchl_bal_medusa( logchl_bkginc, aincper, mld_choice_bgc, &
	71	& k_maxchlinc, ld_logchlbal, &
	72	& pgrow_avg_bkg, ploss_avg_bkg, &
	73	& phyt_avg_bkg, mld_max_bkg, &
[8440]	74	& tracer_bkg, logchl_balinc )
[8428]	75	!!---------------------------------------------------------------------------
[8436]	76	!! * ROUTINE asm_logchl_bal_medusa *
[8428]	77	!!
[8436]	78	!! ** Purpose : calculate increments to MEDUSA from logchl increments
[8428]	79	!!
	80	!! ** Method : convert logchl increments to chl increments
[8436]	81	!! average up MEDUSA to look like HadOCC
[8428]	82	!! call nitrogen balancing scheme
[8436]	83	!! separate back out to MEDUSA
[8428]	84	!!
	85	!! ** Action : populate logchl_balinc
	86	!!
	87	!! References : Hemmings et al., 2008, J. Mar. Res.
	88	!! Ford et al., 2012, Ocean Sci.
	89	!!---------------------------------------------------------------------------
	90	!!
	91	REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: logchl_bkginc ! logchl increments
	92	REAL(wp), INTENT(in ) :: aincper ! Assimilation period
	93	INTEGER, INTENT(in ) :: mld_choice_bgc ! MLD criterion
	94	REAL(wp), INTENT(in ) :: k_maxchlinc ! Max chl increment
	95	LOGICAL, INTENT(in ) :: ld_logchlbal ! Balancing y/n
[8436]	96	REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: pgrow_avg_bkg ! Avg phyto growth
	97	REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: ploss_avg_bkg ! Avg phyto loss
	98	REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: phyt_avg_bkg ! Avg phyto
	99	REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: mld_max_bkg ! Max MLD
[8440]	100	REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,jpk,jptra) :: tracer_bkg ! State variables
[8428]	101	REAL(wp), INTENT( out), DIMENSION(jpi,jpj,jpk,jptra) :: logchl_balinc ! Balancing increments
	102	!!
[8436]	103	INTEGER :: ji, jj, jk, jn ! Loop counters
[8428]	104	INTEGER :: jkmax ! Loop index
	105	INTEGER, DIMENSION(6) :: i_tracer ! Tracer indices
[8436]	106	REAL(wp) :: n2be_p ! N:biomass for total phy
	107	REAL(wp) :: n2be_z ! N:biomass for total zoo
	108	REAL(wp) :: n2be_d ! N:biomass for detritus
	109	REAL(wp) :: zfrac_chn ! Fraction of jpchn
	110	REAL(wp) :: zfrac_chd ! Fraction of jpchd
	111	REAL(wp) :: zfrac_phn ! Fraction of jpphn
	112	REAL(wp) :: zfrac_phd ! Fraction of jpphd
	113	REAL(wp) :: zfrac_zmi ! Fraction of jpzmi
	114	REAL(wp) :: zfrac_zme ! Fraction of jpzme
	115	REAL(wp) :: zrat_pds_phd ! Ratio of jppds:jpphd
	116	REAL(wp) :: zrat_chd_phd ! Ratio of jpchd:jpphd
	117	REAL(wp) :: zrat_chn_phn ! Ratio of jpchn:jpphn
	118	REAL(wp) :: zrat_dtc_det ! Ratio of jpdtc:jpdet
[8428]	119	REAL(wp), DIMENSION(jpi,jpj) :: chl_inc ! Chlorophyll increments
[8436]	120	REAL(wp), DIMENSION(jpi,jpj) :: medusa_chl ! MEDUSA total chlorophyll
	121	REAL(wp), DIMENSION(jpi,jpj) :: cchl_p ! C:Chl for total phy
[8428]	122	REAL(wp), DIMENSION(jpi,jpj) :: zmld ! Mixed layer depth
	123	REAL(wp), DIMENSION(16) :: modparm ! Model parameters
	124	REAL(wp), DIMENSION(20) :: assimparm ! Assimilation parameters
	125	REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: bstate ! Background state
	126	REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: outincs ! Balancing increments
	127	REAL(wp), DIMENSION(jpi,jpj,22) :: diag ! Depth-indep diagnostics
	128	REAL(wp), DIMENSION(jpi,jpj,jpk,22) :: diag_fulldepth ! Full-depth diagnostics
	129	!!---------------------------------------------------------------------------
	130
	131	! Convert log10(chlorophyll) increment back to a chlorophyll increment
	132	! In order to transform logchl incs to chl incs, need to account for model
	133	! background, cannot simply do 10^logchl_bkginc. Need to:
	134	! 1) Add logchl inc to log10(background) to get log10(analysis)
	135	! 2) Take 10^log10(analysis) to get analysis
	136	! 3) Subtract background from analysis to get chl incs
	137	! If k_maxchlinc > 0 then cap total absolute chlorophyll increment at that value
[8440]	138	medusa_chl(:,:) = tracer_bkg(:,:,1,jpchn) + tracer_bkg(:,:,1,jpchd)
[8428]	139	DO jj = 1, jpj
	140	DO ji = 1, jpi
[8436]	141	IF ( medusa_chl(ji,jj) > 0.0 ) THEN
	142	chl_inc(ji,jj) = 10**( LOG10( medusa_chl(ji,jj) ) + logchl_bkginc(ji,jj) ) - medusa_chl(ji,jj)
[8428]	143	IF ( k_maxchlinc > 0.0 ) THEN
	144	chl_inc(ji,jj) = MAX( -1.0 * k_maxchlinc, MIN( chl_inc(ji,jj), k_maxchlinc ) )
	145	ENDIF
	146	ELSE
	147	chl_inc(ji,jj) = 0.0
	148	ENDIF
	149	END DO
	150	END DO
	151
	152	! Select mixed layer
	153	SELECT CASE( mld_choice_bgc )
	154	CASE ( 1 ) ! Turbocline/mixing depth [W points]
	155	zmld(:,:) = hmld(:,:)
	156	CASE ( 2 ) ! Density criterion (0.01 kg/m^3 change from 10m) [W points]
	157	zmld(:,:) = hmlp(:,:)
	158	CASE ( 3 ) ! Kara MLD [Interpolated]
	159	#if defined key_karaml
	160	IF ( ln_kara ) THEN
	161	zmld(:,:) = hmld_kara(:,:)
	162	ELSE
	163	CALL ctl_stop( ' Kara mixed layer requested for LogChl assimilation,', &
	164	& ' but ln_kara=.false.' )
	165	ENDIF
	166	#else
	167	CALL ctl_stop( ' Kara mixed layer requested for LogChl assimilation,', &
	168	& ' but is not defined' )
	169	#endif
	170	CASE ( 4 ) ! Temperature criterion (0.2 K change from surface) [T points]
	171	!zmld(:,:) = hmld_tref(:,:)
	172	CALL ctl_stop( ' hmld_tref mixed layer requested for LogChl assimilation,', &
	173	& ' but is not available in this version' )
	174	CASE ( 5 ) ! Density criterion (0.01 kg/m^3 change from 10m) [T points]
	175	zmld(:,:) = hmlpt(:,:)
	176	END SELECT
	177
	178	IF ( ld_logchlbal ) THEN ! Nitrogen balancing
	179
[8436]	180	! Set up model parameters to be passed into Hemmings balancing routine.
	181	! For now these are hardwired to the standard HadOCC parameter values
	182	! (except C:N ratios) as this is what the scheme was developed for.
	183	! Obviously, HadOCC and MEDUSA are rather different models, so this
	184	! isn't ideal, but there's not always direct analogues between the two
	185	! parameter sets, so it's the easiest way to get something running.
	186	! In the longer term, some serious MarMOT-based development is required.
	187	modparm(1) = 0.1 ! grow_sat
	188	modparm(2) = 2.0 ! psmax
	189	modparm(3) = 0.845 ! par
	190	modparm(4) = 0.02 ! alpha
	191	modparm(5) = 0.05 ! resp_rate
	192	modparm(6) = 0.05 ! pmort_rate
	193	modparm(7) = 0.01 ! phyto_min
	194	modparm(8) = 0.05 ! z_mort_1
	195	modparm(9) = 1.0 ! z_mort_2
	196	modparm(10) = ( xthetapn + xthetapd ) / 2.0 ! c2n_p
	197	modparm(11) = ( xthetazmi + xthetazme ) / 2.0 ! c2n_z
	198	modparm(12) = xthetad ! c2n_d
	199	modparm(13) = 0.01 ! graze_threshold
	200	modparm(14) = 2.0 ! holling_coef
	201	modparm(15) = 0.5 ! graze_sat
	202	modparm(16) = 2.0 ! graze_max
[8428]	203
	204	! Set up assimilation parameters to be passed into balancing routine
	205	! Not sure what assimparm(1) is meant to be, but it doesn't get used
	206	assimparm(2) = balnutext
	207	assimparm(3) = balnutmin
	208	assimparm(4) = r
	209	assimparm(5) = beta_g
	210	assimparm(6) = beta_l
	211	assimparm(7) = beta_m
	212	assimparm(8) = a_g
	213	assimparm(9) = a_l
	214	assimparm(10) = a_m
	215	assimparm(11) = zfracb0
	216	assimparm(12) = zfracb1
	217	assimparm(13) = qrfmax
	218	assimparm(14) = qafmax
	219	assimparm(15) = zrfmax
	220	assimparm(16) = zafmax
	221	assimparm(17) = prfmax
	222	assimparm(18) = incphymin
	223	assimparm(19) = integnstep
	224	assimparm(20) = pthreshold
	225
	226	! Set up external tracer indices array bstate
	227	i_tracer(1) = 1 ! nutrient
	228	i_tracer(2) = 2 ! phytoplankton
	229	i_tracer(3) = 3 ! zooplankton
	230	i_tracer(4) = 4 ! detritus
	231	i_tracer(5) = 5 ! DIC
	232	i_tracer(6) = 6 ! Alkalinity
	233
	234	! Set background state
[8440]	235	bstate(:,:,:,i_tracer(1)) = tracer_bkg(:,:,:,jpdin)
	236	bstate(:,:,:,i_tracer(2)) = tracer_bkg(:,:,:,jpphn) + tracer_bkg(:,:,:,jpphd)
	237	bstate(:,:,:,i_tracer(3)) = tracer_bkg(:,:,:,jpzmi) + tracer_bkg(:,:,:,jpzme)
	238	bstate(:,:,:,i_tracer(4)) = tracer_bkg(:,:,:,jpdet)
	239	bstate(:,:,:,i_tracer(5)) = tracer_bkg(:,:,:,jpdic)
	240	bstate(:,:,:,i_tracer(6)) = tracer_bkg(:,:,:,jpalk)
[8428]	241
[8436]	242	! Calculate carbon to chlorophyll ratio for combined phytoplankton
	243	! and nitrogen to biomass equivalent for PZD
	244	! Hardwire nitrogen mass to 14.01 for now as it doesn't seem to be set in MEDUSA
	245	cchl_p(:,:) = 0.0
	246	DO jj = 1, jpj
	247	DO ji = 1, jpi
[8440]	248	IF ( ( tracer_bkg(ji,jj,1,jpchn) + tracer_bkg(ji,jj,1,jpchd ) ) .GT. 0.0 ) THEN
	249	cchl_p(ji,jj) = ( ( tracer_bkg(ji,jj,1,jpphn) * xthetapn ) + ( tracer_bkg(ji,jj,1,jpphd) * xthetapd ) ) / &
	250	& ( tracer_bkg(ji,jj,1,jpchn) + tracer_bkg(ji,jj,1,jpchd ) )
[8436]	251	ENDIF
	252	END DO
	253	END DO
	254	n2be_p = 14.01 + ( xmassc * ( ( xthetapn + xthetapd ) / 2.0 ) )
	255	n2be_z = 14.01 + ( xmassc * ( ( xthetazmi + xthetazme ) / 2.0 ) )
	256	n2be_d = 14.01 + ( xmassc * xthetad )
	257
[8428]	258	! Call nitrogen balancing routine
[8436]	259	CALL bio_analysis( jpi, jpj, jpk, gdepw_n(:,:,2:jpk), i_tracer, modparm, &
	260	& n2be_p, n2be_z, n2be_d, assimparm, &
	261	& INT(aincper), 1, INT(SUM(tmask,3)), tmask(:,:,:), &
	262	& zmld(:,:), mld_max_bkg(:,:), chl_inc(:,:), cchl_p(:,:), &
	263	& nbal_active, phyt_avg_bkg(:,:), &
	264	& gl_active, pgrow_avg_bkg(:,:), ploss_avg_bkg(:,:), &
	265	& subsurf_active, deepneg_active, &
	266	& deeppos_active, nutprof_active, &
	267	& bstate, outincs, &
	268	& diag_active, diag, &
[8428]	269	& diag_fulldepth_active, diag_fulldepth )
[8436]	270
	271	! Loop over each grid point partioning the increments
	272	logchl_balinc(:,:,:,:) = 0.0
	273	DO jk = 1, jpk
	274	DO jj = 1, jpj
	275	DO ji = 1, jpi
	276
[8440]	277	IF ( ( tracer_bkg(ji,jj,jk,jpphn) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpphd) > 0.0 ) ) THEN
[8436]	278	! Phytoplankton nitrogen and silicate split up based on existing ratios
[8440]	279	zfrac_phn = tracer_bkg(ji,jj,jk,jpphn) / (tracer_bkg(ji,jj,jk,jpphn) + tracer_bkg(ji,jj,jk,jpphd))
[8436]	280	zfrac_phd = 1.0 - zfrac_phn
[8440]	281	zrat_pds_phd = tracer_bkg(ji,jj,jk,jppds) / tracer_bkg(ji,jj,jk,jpphd)
[8436]	282	logchl_balinc(ji,jj,jk,jpphn) = outincs(ji,jj,jk,i_tracer(2)) * zfrac_phn
	283	logchl_balinc(ji,jj,jk,jpphd) = outincs(ji,jj,jk,i_tracer(2)) * zfrac_phd
	284	logchl_balinc(ji,jj,jk,jppds) = logchl_balinc(ji,jj,jk,jpphd) * zrat_pds_phd
	285
	286	! Chlorophyll split up based on existing ratios to phytoplankton nitrogen
	287	! Not using chl_inc directly as it's only 2D
	288	! This method should give same results at surface as splitting chl_inc would
[8440]	289	zrat_chn_phn = tracer_bkg(ji,jj,jk,jpchn) / tracer_bkg(ji,jj,jk,jpphn)
	290	zrat_chd_phd = tracer_bkg(ji,jj,jk,jpchd) / tracer_bkg(ji,jj,jk,jpphd)
[8436]	291	logchl_balinc(ji,jj,jk,jpchn) = logchl_balinc(ji,jj,jk,jpphn) * zrat_chn_phn
	292	logchl_balinc(ji,jj,jk,jpchd) = logchl_balinc(ji,jj,jk,jpphd) * zrat_chd_phd
	293	ENDIF
	294
[8440]	295	IF ( ( tracer_bkg(ji,jj,jk,jpzmi) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpzme) > 0.0 ) ) THEN
[8436]	296	! Zooplankton nitrogen split up based on existing ratios
[8440]	297	zfrac_zmi = tracer_bkg(ji,jj,jk,jpzmi) / (tracer_bkg(ji,jj,jk,jpzmi) + tracer_bkg(ji,jj,jk,jpzme))
[8436]	298	zfrac_zme = 1.0 - zfrac_zmi
	299	logchl_balinc(ji,jj,jk,jpzmi) = outincs(ji,jj,jk,i_tracer(3)) * zfrac_zmi
	300	logchl_balinc(ji,jj,jk,jpzme) = outincs(ji,jj,jk,i_tracer(3)) * zfrac_zme
	301	ENDIF
	302
	303	! Nitrogen nutrient straight from balancing scheme
	304	logchl_balinc(ji,jj,jk,jpdin) = outincs(ji,jj,jk,i_tracer(1))
	305
	306	! Nitrogen detritus straight from balancing scheme
	307	logchl_balinc(ji,jj,jk,jpdet) = outincs(ji,jj,jk,i_tracer(4))
	308
	309	! DIC straight from balancing scheme
	310	logchl_balinc(ji,jj,jk,jpdic) = outincs(ji,jj,jk,i_tracer(5))
	311
	312	! Alkalinity straight from balancing scheme
	313	logchl_balinc(ji,jj,jk,jpalk) = outincs(ji,jj,jk,i_tracer(6))
	314
	315	! Remove diatom silicate increment from nutrient silicate to conserve mass
[8440]	316	IF ( ( tracer_bkg(ji,jj,jk,jpsil) - logchl_balinc(ji,jj,jk,jppds) ) > 0.0 ) THEN
[8436]	317	logchl_balinc(ji,jj,jk,jpsil) = logchl_balinc(ji,jj,jk,jppds) * (-1.0)
	318	ENDIF
	319
[8440]	320	IF ( ( tracer_bkg(ji,jj,jk,jpdet) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpdtc) > 0.0 ) ) THEN
[8436]	321	! Carbon detritus based on existing ratios
[8440]	322	zrat_dtc_det = tracer_bkg(ji,jj,jk,jpdtc) / tracer_bkg(ji,jj,jk,jpdet)
[8436]	323	logchl_balinc(ji,jj,jk,jpdtc) = logchl_balinc(ji,jj,jk,jpdet) * zrat_dtc_det
	324	ENDIF
	325
	326	! Do nothing with iron or oxygen for the time being
	327	logchl_balinc(ji,jj,jk,jpfer) = 0.0
	328	logchl_balinc(ji,jj,jk,jpoxy) = 0.0
	329
	330	END DO
	331	END DO
	332	END DO
[8428]	333
	334	ELSE ! No nitrogen balancing
	335
[8436]	336	! Initialise individual chlorophyll increments to zero
	337	logchl_balinc(:,:,:,jpchn) = 0.0
	338	logchl_balinc(:,:,:,jpchd) = 0.0
[8428]	339
[8436]	340	! Split up total surface chlorophyll increments
	341	DO jj = 1, jpj
	342	DO ji = 1, jpi
	343	IF ( medusa_chl(ji,jj) > 0.0 ) THEN
[8440]	344	zfrac_chn = tracer_bkg(ji,jj,1,jpchn) / medusa_chl(ji,jj)
[8436]	345	zfrac_chd = 1.0 - zfrac_chn
	346	logchl_balinc(ji,jj,1,jpchn) = chl_inc(ji,jj) * zfrac_chn
	347	logchl_balinc(ji,jj,1,jpchd) = chl_inc(ji,jj) * zfrac_chd
	348	ENDIF
	349	END DO
	350	END DO
[8428]	351
	352	! Propagate through mixed layer
	353	DO jj = 1, jpj
	354	DO ji = 1, jpi
	355	!
	356	jkmax = jpk-1
	357	DO jk = jpk-1, 1, -1
	358	IF ( ( zmld(ji,jj) > gdepw_n(ji,jj,jk) ) .AND. &
	359	& ( zmld(ji,jj) <= gdepw_n(ji,jj,jk+1) ) ) THEN
	360	zmld(ji,jj) = gdepw_n(ji,jj,jk+1)
	361	jkmax = jk
	362	ENDIF
	363	END DO
	364	!
	365	DO jk = 2, jkmax
[8436]	366	logchl_balinc(ji,jj,jk,jpchn) = logchl_balinc(ji,jj,1,jpchn)
	367	logchl_balinc(ji,jj,jk,jpchd) = logchl_balinc(ji,jj,1,jpchd)
[8428]	368	END DO
	369	!
	370	END DO
	371	END DO
	372
	373	! Set other balancing increments to zero
[8436]	374	logchl_balinc(:,:,:,jpphn) = 0.0
	375	logchl_balinc(:,:,:,jpphd) = 0.0
	376	logchl_balinc(:,:,:,jppds) = 0.0
	377	logchl_balinc(:,:,:,jpzmi) = 0.0
	378	logchl_balinc(:,:,:,jpzme) = 0.0
	379	logchl_balinc(:,:,:,jpdin) = 0.0
	380	logchl_balinc(:,:,:,jpsil) = 0.0
	381	logchl_balinc(:,:,:,jpfer) = 0.0
	382	logchl_balinc(:,:,:,jpdet) = 0.0
	383	logchl_balinc(:,:,:,jpdtc) = 0.0
	384	logchl_balinc(:,:,:,jpdic) = 0.0
	385	logchl_balinc(:,:,:,jpalk) = 0.0
	386	logchl_balinc(:,:,:,jpoxy) = 0.0
	387
[8428]	388	ENDIF
	389
[8436]	390	END SUBROUTINE asm_logchl_bal_medusa
[8428]	391
	392	#else
	393	!!----------------------------------------------------------------------
	394	!! Default option : Empty routine
	395	!!----------------------------------------------------------------------
	396	CONTAINS
[8436]	397	SUBROUTINE asm_logchl_bal_medusa( logchl_bkginc, aincper, mld_choice_bgc, &
[8440]	398	& k_maxchlinc, ld_logchlbal, &
	399	& pgrow_avg_bkg, ploss_avg_bkg, &
	400	& phyt_avg_bkg, mld_max_bkg, &
	401	& tracer_bkg, logchl_balinc )
[8428]	402	REAL :: logchl_bkginc(:,:)
	403	REAL :: aincper
	404	INTEGER :: mld_choice_bgc
	405	REAL :: k_maxchlinc
[8440]	406	LOGICAL :: ld_logchlbal
	407	REAL :: pgrow_avg_bkg(:,:)
	408	REAL :: ploss_avg_bkg(:,:)
	409	REAL :: phyt_avg_bkg(:,:)
	410	REAL :: mld_max_bkg(:,:)
	411	REAL :: tracer_bkg(:,:,:,:)
	412	REAL :: logchl_balinc(:,:,:,:)
[8436]	413	WRITE(,) 'asm_logchl_bal_medusa: You should not have seen this print! error?'
	414	END SUBROUTINE asm_logchl_bal_medusa
[8428]	415	#endif
	416
	417	!!======================================================================
[8436]	418	END MODULE asmlogchlbal_medusa

Note: See TracBrowser for help on using the repository browser.

Download in other formats: