𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Some aerodynamic features of a cotton canopy

✍ Scribed by D. H. Bache; M. H. Unsworth

Book ID
104574650
Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
756 KB
Volume
103
Category
Article
ISSN
0035-9009

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Analysis of profiles measured over irrigated cotton in the Sudan Gezira showed that the crop boundary layer remained stable throughout most of the day. The shape of wind profiles measured within the canopy suggested that momentum was absorbed mostly in the upper layers of the canopy, with the lower regions remaining isolated from the microclimate above. A similarity analysis based on dynamic scaling factors yielded a generalized wind profile from which momentum diffusivities and mixing lengths were calculated. The analysis showed that aerodynamic features of the upper layers of the canopy were characterized by the friction velocity and the height of the zero‐plane displacement.

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