elevate: Elevate
In tom-locatelli/fgr: R Version of the ForestGALES wind risk model

Converts the critical wind speeds to the wind speed 10 meters above zero plane displacement (for anemometers' data). The wind is assumed to follow a logarithmic profile.

1	elevate(uh, z0, d, ht)

`uh`	Critical wind speed at canopy top calculated with the roughness or single-tree method (m s-1).
`z0`	Aerodynamic roughness length of the canopy (m).
`d`	Zero plane displacement height of the canopy (m).
`ht`	Height at which the critical wind speed is calculated (m). Note that this differs between the 'roughness' (stand mean height) and 'TMC' (1.05 * stand top height) methods.