windheight: Applies height correction to wind speed measurements

In ilyamaclean/microclima: microclimate modelling with R

Applies height correction to wind speed measurements

Description

windheight is used to to apply a height correction to wind speed measured at a specified height above ground level to obtain estimates of wind speed at a desired height above the ground.

Usage

windheight(ui, zi, zo)

Arguments

ui	numeric value(s) of measured wind speed (m s-1 ) at height zi (m).
zi	a numeric value indicating the height (m) above the ground at which ui was measured.
zo	a numeric value indicating the height (m) above ground level at which wind speed is desired.

Details

Thus function assumes a logarithmic height profile to convert wind speeds. It performs inaccurately when uo is lower than 0.2 and a warning is given. If uo is below ~0.08 then the logairthmic height profile cannot be used, and uo is converted to 0.1 and a warning given.

Value

numeric values(s) of wind speed at height specified by zo (m s^-1 ).

See Also

The function windcoef() calculates a topographic or vegetation sheltering effect.

Examples

windheight(3, 10, 1) # good
windheight(3, 10, 0.15) # performs poorly. Warning given
windheight(3, 10, 0.05) # cannot calculate. ui converted and warning given

ilyamaclean/microclima documentation built on Sept. 5, 2024, 8:37 p.m.