wind2 {sirad}

Convert wind speed measured at a certain height to the wind speed at 2 meters

Description

'wind2' converts a wind speed measured at a certain height 'z' above the ground level to the wind speed at the standard height (2 meters)

Usage

wind2(uz,meah)

Arguments

uz

Wind speed measured at heith 'z' [ms-1].

meah

The height (above the ground level) of the wind speed measurement [m].

Details

Wind speed is slowest at the surface and increases with height. The measurements taken at different heights avove the ground level must be standardized to 2 meters (default in agrometeorology).

Value

Wind speed at standard 2 meters. [ms-1]

Author(s)

Jedrzej S. Bojanowski

References

Allen, R.G., L.S. Pereira, D. Raes, and M. Smith. 1998. Crop Evapotranspiration: Guidelines for computing crop water requirements. Irrigation and Drainage Paper 56, Food and Agriculture Organization of the United Nations, Rome, pp. 300.

Examples

wind2(uz=5,meah=10)