From c828cc7431d492080a288d0b02beaf18345d894b Mon Sep 17 00:00:00 2001
From: nefrathenrici <nat.henrici@gmail.com>
Date: Fri, 16 Feb 2024 16:04:13 -0800
Subject: [PATCH] Add SoilCO2Model Land parameters

---
 src/parameters.toml | 57 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/src/parameters.toml b/src/parameters.toml
index 025e61fd..3fe3de81 100644
--- a/src/parameters.toml
+++ b/src/parameters.toml
@@ -123,6 +123,63 @@ value = 0.05336251
 type = "float"
 description = "Constant describing cost of maintaining electron transport (unitless)"
 
+# SoilCO2Model
+
+[CO2_diffusion_coefficient]
+value = 1.39e-5
+type = "float"
+description = "Diffusion coefficient for CO₂ in air at standard temperature and pressure (m² s⁻¹)"
+
+[soilCO2_absval_slope]
+value = 4.547
+type = "float"
+description = "Absolute value of the slope of the line relating log(ψ) versus log(θ) (unitless)"
+
+[soil_C_substrate_diffusivity]
+value = 3.17
+type = "float"
+description = "Diffusivity of soil C substrate in liquid (unitless)"
+
+[soilCO2_pre_expontential_factor]
+value = 194e3
+type = "float"
+description = "Pre-exponential factor (kg C m-3 s-1)"
+
+[soilCO2_activation_energy]
+value = 61e3
+type = "float"
+description = "Activation energy (J mol-1)"
+
+[michaelis_constant]
+value = 5e-3
+type = "float"
+description = "Michaelis constant (kg C m-3)"
+
+[O2_michaelis_constant]
+value = 0.004
+type = "float"
+description = "Michaelis constant for O2 (m3 m-3)"
+
+[O2_volume_fraction]
+value = 0.209
+type = "float"
+description = "Volumetric fraction of O₂ in the soil air, dimensionless"
+
+[oxygen_diffusion_coefficient]
+value = 1.67
+type = "float"
+description = "Diffusion coefficient of oxygen in air, dimensionless"
+
+[soluble_soil_carbon_fraction]
+value = 0.024
+type = "float"
+description = "Fraction of soil carbon that is considered soluble, dimensionless"
+
+[co2_diffusion_porosity_n100]
+value = 0.1816
+type = "float"
+description = "Air-filled porosity at soil water potential of -100 cm H₂O (~ 10 Pa)"
+
 # Soil model
 
 [thermal_conductivity_of_quartz]