Leaf boundary layer

source

leaf_boundary_layer


def leaf_boundary_layer(
    physcon:PhysCon, # Physical constants:
- grav : float
    Gravitational acceleration (m/s2).
- tfrz : float
    Freezing point of water (K).
- visc0 : float
    Kinematic viscosity at 0°C and 1013.25 hPa (m2/s).
- Dh0 : float
    Molecular diffusivity (heat) at 0°C and 1013.25 hPa (m2/s).
- Dv0 : float
    Molecular diffusivity (H2O) at 0°C and 1013.25 hPa (m2/s).
- Dc0 : float
    Molecular diffusivity (CO2) at 0°C and 1013.25 hPa (m2/s).
    atmos:Atmos, # Atmospheric forcing variables:
- patm : float
    Atmospheric pressure (Pa).
- rhomol : float
    Molar density (mol/m3).
- wind : float
    Wind speed (m/s).
- tair : float
    Air temperature (K).
    leaf:Leaf, # Leaf parameters:
- dleaf : float
    Leaf dimension (m).
    flux:Flux, # Flux variables with the following input:
- tleaf : float
    Leaf temperature (K).
)->Flux: # Updated flux object with the following attributes:
- gbh : float
    Leaf boundary layer conductance for heat (mol/m2 leaf/s).
- gbv : float
    Leaf boundary layer conductance for H2O (mol H2O/m2 leaf/s).
- gbc : float
    Leaf boundary layer conductance for CO2 (mol CO2/m2 leaf/s).

Calculate leaf boundary layer conductances.

Parameters:

  • PhysCon: Physical constants

    • grav: float Gravitational acceleration (m/s2).
    • tfrz: float Freezing point of water (K).
    • visc0: float Kinematic viscosity at 0°C and 1013.25 hPa (m2/s).
    • Dh0: float Molecular diffusivity (heat) at 0°C and 1013.25 hPa (m2/s).
    • Dv0: float Molecular diffusivity (H2O) at 0°C and 1013.25 hPa (m2/s).
    • Dc0: float Molecular diffusivity (CO2) at 0°C and 1013.25 hPa (m2/s).

  • Atmos: Atmospheric forcing variables

    • patm: Atmospheric pressure (Pa).
    • rhomol: Molar density (mol/m3).
    • wind: Wind speed (m/s).
    • tair: Air temperature (K).

  • Leaf: Leaf Object

    • dleaf: Leaf dimension (m).

  • Flux: Flux variables with the following input

    • tleaf: Leaf temperature (K).

Returns:

  • Flux: Updated flux object with the following attributes:

    • gbh: Leaf boundary layer conductance for heat (mol/m2 leaf/s).
    • gbv: Leaf boundary layer conductance for H2O (mol H2O/m2 leaf/s).
    • gbc: Leaf boundary layer conductance for CO2 (mol CO2/m2 leaf/s).