windheight: Applies height correction to wind speed measurements

In dklinges9/mcera5: Tools to Acquire and Process ERA5 Data for Use in Microclimate Modelling

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 idicating 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 innacurately 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

dklinges9/mcera5 documentation built on March 1, 2024, 11:40 p.m.