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USERCONFIG.PALEO.ECOGEM.PO4.SPIN
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# *******************************************************************
# *** USERCONFIG.PALEO.ECOGEM.PO4.SPIN ******************************
# *******************************************************************
#
# *** CLIMATE *******************************************************
#
# set climate feedback (climate responding to changing pCO2)
ea_36=y
#
# *** BIOLOGICAL NEW PRODUCTION *************************************
#
# biological scheme ID string
# NOTE: with ECOGEM, no BIOGEM biological scheme must be selected
bg_par_bio_prodopt="NONE"
#
# *** ORGANIC MATTER EXPORT RATIOS **********************************
#
# [dealt with by ECOGEM]
#
# *** INORGANIC MATTER EXPORT RATIOS ********************************
#
# [dealt with by ECOGEM]
#
# *** REMINERALIZATION **********************************************
#
# *** recommended ***************************************************
# 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
# *** Ward et al. [2018] ********************************************
###bg_par_bio_remin_sinkingrate_physical=125.0
###bg_par_bio_remin_sinkingrate_reaction=125.0
###bg_par_bio_remin_DOMlifetime=1.0
# *** common settings ***********************************************
# initial fractional abundance of POC component #2
bg_par_bio_remin_POC_frac2=0.0557
# 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
# *** Crichton et al. [2020] temeprature-dependent remin ************
###bg_ctrl_bio_remin_POC_fixed=.false.
###bg_par_bio_remin_POC_K1=9.0E11
###bg_par_bio_remin_POC_Ea1=54000.0
###bg_par_bio_remin_POC_K2=1.0E14
###bg_par_bio_remin_POC_Ea2=80000.0
###bg_par_bio_remin_POC_frac2=0.008
#
# *** ECOGEM ********************************************************
#
# specify ecosystem structure definition file
eg_par_ecogem_plankton_file='8P8Z.eco'
# include cellular quota: N
eg_useNO3 =.false.
eg_nquota =.false.
# include cellular quota: PO4
eg_usePO4 =.true.
eg_pquota =.true.
# include cellular quota: Fe
eg_useFe =.false.
eg_fquota =.false.
# include cellular quota: Chlorophyll
eg_chlquota =.true.
# d13C fractionaton based on d13C of DIC?
eg_useDIC_13C =.true.
# P and Fe quota parameters (tuned values)
eg_qminP_a = 3.33e-3
eg_qminFe_a = 1.00e-6
eg_qmaxFe_a = 4.00e-6
# Prey switching exponent (Holling 2 or 3 [= ns+1])
eg_ns=2
# Carbon respiration rate - intercept
eg_respir_a=0.0
# DOM (ca. POM) partitioning parameters
eg_beta_mort_a = 0.8 # Maximum fraction to DOM as ESD --> zero
eg_beta_mort_b = 0.4 # Minimum fraction to DOM as ESD --> infinity
eg_beta_mort_c = 100.0 # Size at 50:50 partition (default = 100 µm^3)
eg_beta_graz_a = 0.8 # Maximum fraction to DOM as ESD --> zero
eg_beta_graz_b = 0.4 # Minimum fraction to DOM as ESD --> infinity
eg_beta_graz_c = 100.0 # Size at 50:50 partition (default = 100 µm^3)
# exponent for modifier of CaCO3:POC export ratio
# NOTE: set power to zero for invarient ratio
eg_par_bio_red_POC_CaCO3_pP=0.0
# underlying export CaCO3 as a proportion of particulate organic matter (i.e., CaCO3/POC)
# NOTE: reduced by 50% on the basis that the modern ECOGEM scaling parameter is also ca. 50% lower
eg_par_bio_red_POC_CaCO3 = 0.0100 # underlying export CaCO3 as a proportion of particulate organic matter (i.e., CaCO3/POC)
# *** alternative for > 200 Ma **************************************
###eg_par_bio_red_POC_CaCO3=0.0
#
# *** DATA SAVING ***************************************************
#
# BASIC + biology + tracer + proxy diagnostics
bg_par_data_save_level=7
# *** recommended ***************************************************
# force time-slice save at run end only
bg_par_infile_slice_name='save_timeslice_NONE.dat'
#
# *** FORCINGS ******************************************************
#
# specify forcings -- restoring of atmopsheric pCO2 and d13C
bg_par_forcing_name="pyyyyz.RpCO2_Rp13CO2"
bg_par_atm_force_scale_val_3=278.0E-06
bg_par_atm_force_scale_val_4=-6.5
# *** alternative Fe-limitation-enabled forcing *********************
#### specify forcings -- restoring of atmopsheric pCO2 and d13C + uniform dust
###bg_par_forcing_name="pyyyyz.RpCO2_Rp13CO2.DUST"
#
# *** MISC **********************************************************
#
# kraus-turner mixed layer scheme on (1) or off (0)
go_imld = 1
# *** recommended ***************************************************
# set mixed layer to be only diagnosed (for ECOGEM)
go_ctrl_diagmld=.true.
# add seaice attenuation of PAR
eg_ctrl_PARseaicelimit=.true.
# relative partitioning of C into DOM
eg_par_beta_POCtoDOC=0.70
# maximum time-scale to geochemical reaction completion (days)
bg_par_bio_geochem_tau=45.0
# *** alternative Fe-limitation-enabled calibrated value ************
#### relative partitioning of C into DOM
###eg_par_beta_POCtoDOC=0.75
#
# *******************************************************************
# *** END ***********************************************************
# *******************************************************************
#