fetch3.nhl_transpiration.NHL_functions.solve_leaf_physiology#

solve_leaf_physiology(Tair, Qp, Ca, Vcmax25, alpha_p, VPD, m, **kwargs)#

Calculates photosynthesis and stomatal conductance Uses Leuning model for stomatal conductance

Parameters:

  • Tair (float) – Air temperature [deg C]

  • Qp (float) – absorbed photosynthetically active radiation at each level within the canopy [µmol m-2 s-1]

  • Ca (float) – CO2 concentration [µmol/mol]

  • Vcmax25 (float) – Farquhar model parameter

  • alpha_p (float) – Farquhar model parameter

  • VPD (float) – Vapor pressure deficit [kPa]

  • calc_gb (**kwargs for) –

Returns:

  • A (float) – photosynthesis [µmol m-2 s-1]

  • gs (float) – stomatal conductance [mol m-2 s-1]

  • Ci (float) – intracellular CO2 concentration [µmol mol-1]

  • Cs (float) – CO2 concentration at leaf surface [µmol mol-1]

  • gb (float) – boundary layer conductance [mol m-2 s-1]

  • geff (float) – effective leaf conductance [mol m-2 s-1]