Calculation of the neutral wind profile following a large step change in surface roughness

✍ Scribed by D. H. Wood

• Publisher: John Wiley and Sons
• Year: 1978
• Tongue: English
• Weight: 583 KB
• Volume: 104
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49710444012

✦ Synopsis

Abstract

The response of the boundary layer wind profile and the surface shear to a large step change in surface roughness is predicted by three calculation methods and the predictions are compared with measurements by Bradley. The first method, which assumes that local equilibrium exists everywhere in the adjusting region, performs less well than the second and third methods, which both employ a transport equation for the shear stress. It is also shown that the extra sophistication of the third method, in allowing for the non‐local effects on the dissipation length scale, does not give consistently better results than the second method.