Gb_hForced: Leaf boundary layer conductance for heat under forced and...

In VEZY/DynACof: A Process-Based Model to Study Growth, Yield and Ecosystem Services of Coffee Agroforestry Systems

Description

Compute the boundary layer conductance for heat - single sided, forced or free convection using the Leuning et al. (1995) equations.

Usage

Gb_hForced(Wind, wleaf = 0.068)

Gb_hFree(Tair, Tleaf, wleaf = 0.068, Dheat = Constants()$Dheat)

Arguments

Wind	Wind speed (m s-1)
wleaf	Leaf width (m). Default to 0.068
Tair	Average daily air temperature (deg C)
Tleaf	Average daily leaf temperature (deg C)
Dheat	Molecular diffusivity for heat (m2 s-1). Default to: Constants()$Dheat.

Value

Gb_hForced	Leaf boundary layer conductance for heat under forced convection (m s-1)
Gb_hFree	Leaf boundary layer conductance for heat under free convection (m s-1)

References

Leuning, R., et al., Leaf nitrogen, photosynthesis, conductance and transpiration: scaling from leaves to canopies. Plant, Cell & Environment, 1995. 18(10): p. 1183-1200.

See Also

The MAESPA model, from which both functions were taken (FORTRAN code) and translated into R. The function from which both are usually called internally in DynACof: Gb_h()

Examples

Gb_hForced(Wind=3)
Gb_hFree(Tair= 25,Tleaf= 26)

VEZY/DynACof documentation built on Feb. 3, 2021, 8:52 p.m.