Autotrophic Respiration

AutotrophicRespirationModel{FT, ARP <: AutotrophicRespirationParameters{FT},} <: AbstractAutotrophicRespirationModel{FT}

Autotrophic respiration model inspired by JULES.

Clark, D. B., et al. "The Joint UK Land Environment Simulator (JULES), model description–Part 2: carbon fluxes and vegetation dynamics." Geoscientific Model Development 4.3 (2011): 701-722.

AutotrophicRespirationModel{FT}(toml_dict::CP.ParamDict,
                               ) where {FT <: AbstractFloat}

Create a AutotrophicRespirationModel using toml_dict of type FT.

AutotrophicRespirationParameters{FT<:AbstractFloat}

The required parameters for the autrophic respiration model, inspired by the JULES model. Clark, D. B., et al. "The Joint UK Land Environment Simulator (JULES), model description–Part 2: carbon fluxes and vegetation dynamics." Geoscientific Model Development 4.3 (2011): 701-722.

• ηsl: Live stem wood coefficient (kg C m-3)

• σl: Specific leaf density (kg C m-2 [leaf])

• μs: Ratio stem nitrogen to root nitrogen (-)

• Rel: Relative contribution or Rgrowth (-)

• Q10: Q10 temperature sensitivity of maintenance respiration (-), JULES default 2.0

• T_ref: Reference temperature for the Q10 maintenance-respiration factor (K), JULES default 298.15

• Rd_ref: Reference leaf-level dark respiration rate (mol CO2 m-2 s-1) used as the base rate for the LAI-independent root and stem maintenance respiration

AutotrophicRespirationParameters(toml_dict::CP.ParamDict; kwargs...)

Constructor for the AutotrophicRespirationParameters struct by passing a TOML dictionary. You can manually override any parameter via keyword arguments:

AutotrophicRespirationParameters(toml_dict; μs = 0.1)

compute_autrophic_respiration(model::AutotrophicRespirationModel,
                              SAI,
                              RAI,
                              An_canopy,
                              Rd_canopy,
                              T_canopy,
                             )

Computes the autotrophic respiration (mol co2 m^-2 s^-1) as the sum of the plant maintenance and growth respirations, inspired by the JULES model.

Maintenance respiration is split by tissue. The leaf term uses Rd_canopy (∝ LAI) so it vanishes when leafless; the root and stem terms use a reference rate Rd_ref scaled by the time-constant area indices RAI/SAI, so they persist through winter. The sum is scaled by the Q10 factor Q10^((T_canopy - T_ref)/10).

Clark, D. B., et al. "The Joint UK Land Environment Simulator (JULES), model description–Part 2: carbon fluxes and vegetation dynamics." Geoscientific Model Development 4.3 (2011): 701-722.

plant_respiration_growth(
    Rel::FT, # Factor of relative contribution
    An::FT, # Net photosynthesis
    Rpm::FT # Plant maintenance respiration
    ) where {FT}

Computes plant growth respiration as a function of net photosynthesis (An), plant maintenance respiration (Rpm), and a relative contribution factor, Rel.