Flow Patterns at the Ends of a Street Canyon: Measurements from the Joint Urban 2003 Field Experiment

@article{Pol2008FlowPA,
  title={Flow Patterns at the Ends of a Street Canyon: Measurements from the Joint Urban 2003 Field Experiment},
  author={Suhas Pol and Michael J. Brown},
  journal={Journal of Applied Meteorology and Climatology},
  year={2008},
  volume={47},
  pages={1413-1426}
}
Abstract During the Joint Urban 2003 experiment held in Oklahoma City, Oklahoma, an east–west-running street canyon was heavily instrumented with wind sensors. In this paper, the flow patterns at the street canyon ends are investigated by looking at sonic anemometers placed near ground level and tethersonde wind vane systems operated in “ladder” mode that were suspended over the sides of the buildings on each side of the street. For southerly flow conditions, the street-level wind sensors often… 

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References

SHOWING 1-10 OF 35 REFERENCES
Street canyon flow patterns in a horizontal plane : measurements from the Joint URBAN 2003 field experiment
As part of the larger Joint URBAN 2003 tracer field experiment performed in Oklahoma City from June 29 to July 30, 2003, a collaborative team of government and university researchers instrumented a
Flow Variability in a North American Downtown Street Canyon
Abstract Previous field and laboratory studies have indicated that flow and turbulence inside urban areas and, in particular, in street canyons, is very complex and is associated with wakes and
Wind fields and turbulence statistics in an urban street canyon
This is the first paper of a long-term measurement campaign to explore wind, temperature, radiation and energy fields within an urban canyon. A canyon and a rooftop mast were installed in a canyon
Kinematics and dispersion characteristics of flows in asymmetric street canyons
Abstract Flow visualization and tracer concentration measurements were made in street canyon models in which the ratio of street width to the height of the upwind building was held constant at 0.79
The influence of street architecture on flow and dispersion in street canyons
SummaryThe paper presents an overview of the influence of street architecture on the wind and turbulence patterns in street canyons and discusses the effects on local air quality. The findings of
Measurements of wind velocities in a street canyon
Abstract Measurements of wind velocities in an urban street canyon with a height-to-width ratio of about 1.4 were made when ambient winds aloft were approximately perpendicular to the street. The
The spatial variability in concentrations of a traffic-related pollutant in two street canyons in York, UK—Part I: The influence of background winds
The influence of background wind flow on the dispersion of carbon monoxide (CO) was investigated over a one-month period in two street canyons of differing geometry in the city of York, UK.
Pollutant dispersion and thermal effects in urban street canyons
A numerical model has been built to simulate the small-scale atmospheric flows within the urban canopy, based on the lower atmosphere classical assumptions and the “standard κ-ϵ” two-equation
Observations of the Effects of Atmospheric Stability on Turbulence Statistics Deep within an Urban Street Canyon
Abstract Data obtained in downtown Oklahoma City, Oklahoma, during the Joint Urban 2003 atmospheric dispersion study have been analyzed to investigate the effects of upstream atmospheric stability on
Joint Urban 2003 street canyon experiment
As part of the DOE-DTRA Joint URBAN 2003 field experiment in Oklahoma City, a multi-group team instrumented a downtown street canyon with a high density of wind sensor instrumentation. The goal was
...
1
2
3
4
...