calc_footprint_kljun: Two-dimensional footprint calculation
In grahamstewart12/footprints: What the Package Does (One Line, Title Case)

Description Usage Arguments Details Value References See Also

Two-dimensional footprint calculation

1	calc_footprint_kljun(grid, wd, ustar, mo_length, v_sigma, blh, zm, zd, zo, ...)

`grid`	A list of matrices as returned by `grid_init()`
`wd`	A numeric vector, wind direction in degrees from North
`ustar`	A numeric vector, friction velocity in ms+1s-1
`mo_length`	A numeric vector, Monin-Obukhov length in m
`v_sigma`	A numeric vector, standard deviation of the crosswind component
`blh`	A numeric vector, boundary layer height in m
`zm`	A numeric vector, measurement height in m
`zd`	A numeric vector, zero-plane displacement height in m
`zo`	A numeric vector, aerodynamic roughness length in m
`...`	To be left empty, for flexible calls to a footprint function

The authors assert the following criteria must be met for their model to be valid:

ustar > 0.1
(zm - zd) / mo_length >= -15.5

A matrix with same dimensions as each item of grid

Kljun, N., Calanca, P., Rotach, M. W., & Schmid, H. P. (2015). A simple two-dimensional parameterisation for Flux Footprint Prediction (FFP). Geoscientific Model Development, 8(11), 3695–3713. https://doi.org/10.5194/gmd-8-3695-2015

Other footprints: calc_footprint_hsieh(), calc_footprint_kormann()

grahamstewart12/footprints documentation built on Aug. 18, 2021, 4:32 p.m.