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Permanent link (DOI): https://doi.org/10.7939/R3R785X1S

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Analysis of ambient air quality trends at residential air monitoring stations in Edmonton, AB Open Access

Descriptions

Other title
Subject/Keyword
Alberta
trend
NO2
CO
air quality
ambient
PM2.5
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Fairbank, Salina K
Supervisor and department
Kindzierski, Warren (School of Public Health)
Examining committee member and department
Quemerais, Bernadette (School of Public Health)
Buchanan, Ian (Civil and Environmental Engineering)
Department
School of Public Health
Specialization
Environmental Health Sciences
Date accepted
2015-09-18T13:04:28Z
Graduation date
2015-11
Degree
Master of Science
Degree level
Master's
Abstract
Trends in ambient air quality concentrations were analyzed for three air pollutants (NO2, PM2.5, CO) in Edmonton, AB for the years 2003-2013. Hourly concentration data was obtained from three residential ambient air monitoring stations: Edmonton South, Woodcroft, and Gold Bar. Annual concentration-based benchmarks were determined between the 50th and 98th percentiles for the three pollutants over the study period. Trend analysis of the concentration percentile data, as well as population, traffic volume, and industrial emissions data for the study area, was completed using Mann-Kendall and Theil-Sen trend tests. An exploratory multiple linear regression analysis was completed to determine if population, traffic volume, and industrial NO2 emissions are predictors of 50th percentile NO2 concentrations at the Woodcroft station. Ambient NO2 concentrations showed a statistically significant (α=0.05) decreasing trend at all air monitoring stations over the study period. A statistically significant (α=0.05) increasing trend was detected for PM2.5 at the Edmonton South station, however it is attributed to changes in monitoring instrumentation over the study period. No statistically significant (α=0.05) trends were detected for PM2.5 at the Woodcroft monitoring station, or for CO at the Edmonton South station. Trend analysis of population and traffic volume detected statistically significant (α=0.05) increasing trends for the population and number of registered vehicles in the City of Edmonton over the study period. Analysis of industrial emissions data detected a statistically significant decreasing trend in reported NO2 emissions for the study period; no statistically significant trends were observed for reported PM2.5 and CO industrial emissions (α=0.05). The exploratory multiple linear regression analysis did not detect a relationship between population, traffic volume, industrial NO2 emissions, and 50th percentile NO2 concentrations at the Woodcroft station; the relatively small data set was deemed insufficient for this type of analysis.
Language
English
DOI
doi:10.7939/R3R785X1S
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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Last modified: 2016:06:24 17:44:24-06:00
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File title: Salina Kathleen Fairbank
File author: salina.fairbank
Page count: 179
File language: en-CA
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