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Original Articles

An Assessment of Plume Dispersion Parameters Measured in Fall and Winter at a Tar-Sands Refinery Complex

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Pages 589-593 | Published online: 14 Mar 2012
 

Abstract

Increased energy processing activity in the north has resulted in a demand for measured data on plume dispersion that is relevant to this particular region. The north was, therefore, selected for study in a comprehensive government/Industry research program. The objective of these studies was to assess the behaviour of plumes in various geographic areas In Canada. The program utilizes airborne and automobile-mounted probes to determine SO2 and temperature profiles within stock-emitted plumes as well as meteorological data on local atmospheric structure. The data are then analyzed numerically to obtain plume axis elevations and standard deviations of spread and these results are compared to accepted predictive methods. Good agreement with the analysis of Briggs was observed for predicting the location of the plume axis In neutral conditions; some deviations were noted in stable conditions. Values of the measured product ( σay-σ;z) were generally larger than those of Pasquill, particularly for those values close to the source. A difference between the measured values of (σ;y-σ;z) in fall and winter was observed in stable conditions.

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