Translating Wind Measurements from Weather Stations to Agricultural Crops
Publication: Journal of Hydrologic Engineering
Volume 2, Issue 1
Abstract
Logarithmically based functions were used to translate wind-speed measurements from weather stations to cropped fields. The translations adjusted the wind measurements for both instrument siting height and effects of vegetation height and roughness. The roughness of the original measurement site, of the vegetation for which wind data were desired and of the general region, were considered. The transfer function is necessary for wind measurements over clipped grass in order to directly predict evapotranspiration from agricultural crops using the Penman-Monteith equation. Differences in crop height and roughness between clipped grass and taller agricultural crops can reduce wind speed over the taller crops by as much as 50% in the lower internal boundary layer.
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Information
Published In
Journal of Hydrologic Engineering
Volume 2 • Issue 1 • January 1997
Pages: 26 - 35
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jan 1, 1997
Published in print: Jan 1997
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