Sustainability and Social Justice

Roughness Effects on Urban Turbulence Parameters

Document Type

Article

Abstract

Urban roughness lengths are estimated from measurements of u and u* at one level under neutral conditions, assuming a logarithmic form for the vertical profile of wind velocity. At a given location in the urban area, estimated values show considerable directional variation. The dependence of some turbulence parameters on the urban roughness lengths is experimentally investigated during near-neutral conditions. The ratios Σi/u* decrease with roughness whereas the turbulence intensities Σi/u increase with it. The dependence on roughness is not the same for all components. © 1986 D. Reidel Publishing Company.

Publication Title

Boundary-Layer Meteorology

Publication Date

11-1-1986

Volume

37

Issue

3

First Page

271

Last Page

284

ISSN

0006-8314

DOI

10.1007/BF00122989

Keywords

turbulence, boundary layer, aerodynamics, meteorlogy, roughness effect, urban area

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