Group canopy_eddy

Eddy diffusivity calculations within and above canopy.

Public Functions

Type	Name
subroutine	canopy_eddy_mod::canopy_eddyx (HCM HCM, ZK ZK, USTAR USTAR, MOL MOL, KZ KZ) Calculate canopy eddy diffusivity.

Public Functions Documentation

function canopy_eddyx

Calculate canopy eddy diffusivity.

subroutine canopy_eddy_mod::canopy_eddyx (
    HCM HCM,
    ZK ZK,
    USTAR USTAR,
    MOL MOL,
    KZ KZ
)

Computes Eddy Diffusivity, Kz, within and just above canopy using stability-dependent parameterizations for different atmospheric conditions

Parameters:

HCM Height of canopy top (m)
ZK Above/Below canopy height, z (m)
USTAR Model input friction velocity (m/s)
MOL Model input Monin-Obukhov Length (m)
KZ Estimated Eddy Diffusivity with canopy turbulence (m²/s)

Author:

P. C. Campbell

Date:

Jun 2022

Note:

Based on Makar et al. (2017) algorithms for canopy turbulence Makar, P., Staebler, R., Akingunola, A. et al. (2017). The effects of forest canopy shading and turbulence on boundary layer ozone. Nature Communications, 8, 15243. https://doi.org/10.1038/ncomms15243 Raupach, M. R. (1989). A Practical Lagrangian method for relating scalar concentrations to source distributions in vegetation canopies. Quarterly Journal of the Royal Meteorological Society, 115, 609-632.