Influence of buildings and trees on turbulence parameters in the urban roughness sublayer

Most experiments attempt to place instrumentation at an elevation high enough to avoid the influence of individual surface features while still remaining low enough to be in the constant flux layer. In complex urban environments, these two conditions cannot always be satisfied simultaneously. This study looks at the effects of local features on data from sonic anemometers placed within the urban roughness sublayer. Within the roughness sublayer, trees produce a magnitude of turbulence comparable to the turbulence produced by buildings of similar height.