Abstract
Abstract A unique set of data was collected during a large-scale field study of diffusion about an urban complex at Fort Wayne, Ind. Observations of turbulent wind fluctuations were obtained on two towers, one in a typical rural setting, the other in the heart of the downtown area of this medium size city. These turbulence data allow us to compare the state of the atmospheric boundary layer (to a height of 60 m) in its normal rural condition with its state after modification by the city. Predictions of the effect of the city have been verified and quantized. The increased roughness of the city had a drag effect that changed the shape of the wind speed profile. The city “heat island” decreased the stability of atmosphere most noticeably in the lowest layers and much less with increasing height. This effect was more noticeable when the rural atmosphere was slightly stable. Turbulence was more intense in the rougher and less stable urban environment, but the ratios of normalized intensifies in dynamic simila...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
