Research Article
Apr 1974
Air Pollution Patterns in an Urban Street Canyon
Publication: Journal of the Environmental Engineering Division
Volume 100, Issue 2
Abstract
High concentrations of carbon monoxide in an urban street canyon are known to accompany periods of slight atmospheric dispersion. It is found that during such episodes, certain individual or combined micrometeorological and source variables dominate the interaction during certain time segments of the day. For the early morning hours, the lapse rate can be used as a good predictor of the resultant CO concentration. Traffic count is the dominant variable than at all hours, except the early afternoon period when the wind speed is the most dominant. Model equations developed from statistical analysis of field data generalize to the three-dimensional air quality aspects of the particular urban roadway section studied and to those displaying similar characteristics and weather conditions.
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Information
Published In
Journal of the Environmental Engineering Division
Volume 100 • Issue 2 • April 1974
Pages: 311 - 323
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Apr 1974
Published online: Feb 11, 2021
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Authors
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Frederick A. Brunner
Svedrup & Parcel and Assoc., Inc., St. Louis, MO, USA
Karl B. Schnelle Jr.
Dept. of Envir. and Water Resour. Engrg., Vanderbilt Univ., Nashville, TN, USA
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