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USERCONFIG.MODERN.BIOGEM.PO4Fe.SPIN
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# *******************************************************************
# *** USERCONFIG.MODERN.BIOGEM.PO4Fe.SPIN ***************************
# *******************************************************************
#
# *** CLIMATE *******************************************************
#
# set climate feedback (climate responding to changing pCO2)
ea_36=y
#
# *** BIOLOGICAL NEW PRODUCTION *************************************
#
# biological scheme ID string
bg_par_bio_prodopt="bio_PFe"
# [PO4] M-M half-sat value (mol kg-1)
bg_par_bio_c0_PO4=0.10E-06
# [Fe] M-M half-sat value (mol kg-1)
bg_par_bio_c0_Fe=0.10E-09
# *** worjh2 world tuning *******************************************
# biological uptake time-scale
bg_par_bio_tau=63.3827
# *** worlg4 world tuning *******************************************
###bg_par_bio_tau=95.6337
#
# *** ORGANIC MATTER EXPORT RATIOS **********************************
#
# production fraction of dissolved organic matter
bg_par_bio_red_DOMfrac=0.66
#
# *** INORGANIC MATTER EXPORT RATIOS ********************************
#
# underlying export CaCO3 as a proportion of particulate organic matter (i.e., CaCO3/POC)
bg_par_bio_red_POC_CaCO3=0.0485
# exponent for modifier of CaCO3:POC export ratio
bg_par_bio_red_POC_CaCO3_pP=0.7440
#
# *** REMINERALIZATION **********************************************
#
# DOC lifetime (yrs)
bg_par_bio_remin_DOMlifetime=1.0
# initial fractional abundance of POC component #2
bg_par_bio_remin_POC_frac2=0.055
# depth of remineralization or particulate organic matter
bg_par_bio_remin_POC_eL1=589.9451
# remineralization length #2 for POC
bg_par_bio_remin_POC_eL2=1000000.0
# initial fractional abundance of CaCO3 component #2
bg_par_bio_remin_CaCO3_frac2=0.45
# depth of remineralization or CaCO3
bg_par_bio_remin_CaCO3_eL1=1.8905e+003
# remineralization length #2 for CaCO3
bg_par_bio_remin_CaCO3_eL2=1000000.0
# *** optional changes to align with PALEO recommendations **********
#### DOC lifetime (yrs) -- following Doney et al. [2006]
###bg_par_bio_remin_DOMlifetime=0.5
#### set 'instantaneous' water column remineralziation
###bg_par_bio_remin_sinkingrate_physical=9.9E9
###bg_par_bio_remin_sinkingrate_reaction=125.0
#
# *** IRON CYCLING **************************************************
#
# *** worjh2 world tuning *******************************************
# iron tracer scheme
# NOTE: 'OLD' is the default and so this parameter setting need not be included
bg_opt_geochem_Fe='OLD'
# aeolian Fe solubility
bg_par_det_Fe_sol=0.00291468
# modifier of the scavenging rate of dissolved Fe
bg_par_scav_Fe_sf_POC=1.338130
# *** worlg4 world tuning *******************************************
###bg_opt_geochem_Fe='hybrid'
###bg_par_det_Fe_sol=0.002014275
###bg_par_scav_Fe_sf_POC=0.344104
# *** optional changes to align with PALEO recommendations **********
###bg_opt_geochem_Fe='hybrid'
###bg_par_det_Fe_sol=0.00291468
###bg_par_scav_Fe_sf_POC=1.338130
# *** common settings ***********************************************
# exponent for aeolian Fe solubility [use 1.0 for uniform solubility]
bg_par_det_Fe_sol_exp=0.500
# no scavenged regeneration
bg_par_scav_fremin=0.0
# return POFe
bg_ctrl_bio_NO_fsedFe=.false.
# Variable Fe:C
bg_ctrl_bio_red_fixedFetoC=.false.
# adjust pK'(FeL)
bg_par_K_FeL_pP=11.0
#(max) C/Fe organic matter ratio
bg_par_bio_red_POFe_POC=250000.0
#[FeT] dependent Fe:C ratio [Ridgwell, 2001] -- power
bg_par_bio_FetoC_pP=-0.4225
#[FeT] dependent Fe:C ratio [Ridgwell, 2001] -- scaling
bg_par_bio_FetoC_K=103684.0
#[FeT] dependent Fe:C ratio [Ridgwell, 2001] -- constant
bg_par_bio_FetoC_C=0.0
#
# *** DATA SAVING ***************************************************
#
# Ocean acidification save option == biology and geochemical output fields plus all carbonate chemistry
bg_par_data_save_level=10
# *** optional changes to align with PALEO recommendations **********
#### force time-slice save at run end only
###bg_par_infile_slice_name='save_timeslice_NONE.dat'
#
# *** FORCINGS ******************************************************
#
# specify forcings -- dust field and restoring of atmopsheric pCO2 and d13C
# *** worjh2 world tuning *******************************************
bg_par_forcing_name="worjh2.RpCO2_Rp13CO2.FeMahowald2006"
# *** worlg4 world tuning *******************************************
###bg_par_forcing_name="worlg4.RpCO2_Rp13CO2.FeMahowald2006"
# *** common settings ***********************************************
bg_par_atm_force_scale_val_3=278.0E-06
bg_par_atm_force_scale_val_4=-6.5
#
# *** MISC **********************************************************
#
# *** optional changes to align with PALEO recommendations **********
#### maximum time-scale to geochemical reaction completion (days)
###bg_par_bio_geochem_tau=45.0
#
# *******************************************************************
# *** END ***********************************************************
# *******************************************************************
#