This page lists some of my projects and research. I have included free download links when I can. Due to copyright rules the copies I provide might be drafts.
Open-source software
bivapp: Bivariate polar plots in Python. Creator and maintainer.
Publications in scholarly refereed journals
Johnson M, Zhang JY, Lee M, Van Ryswyk K, Kulka R, Edwards TD, Bertazzon S, Kunarac K. Estimating fine scale ambient air pollutants in a complex urban and rural airzone: results from the Calgary Spatial and Temporal Modeling (CSTEM) study. 2025. Submitted to Environmental Science & Technology.
Edwards TD, Wong YK, Heong CJ, Wang JM, Su Y, Evans GJ. Comparison of methods for resolving the contributions of local emissions to measured concentrations. Atmospheric Measurement Techniques. 2025. doi.org/10.5194/amt-18-2201-2025.
Edwards TD, Wang JM, Hilker N, Jeong CH, Evans GJ. Measurement of real-world roadway emissions rates through a fitted dispersion model. Atmospheric Pollution Research. 2021. doi.org/10.1016/j.apr.2021.01.016. Download free draft here.
Presentations and Posters
Podium Presentations
Edwards TD, Wang JM, Evans GJ. Measuring lane-by-lane traffic emissions. University of Toronto Engineering Research Conference. 2023. Toronto, ON, Canada.
Evans GJ, Jeong CH, Edwards TD, Hilker N, Fang C, Shashidhar N, Movahhedinia H, Van Ryswyk K, Iorio K, Brook J, Yousif M. Every Breath You Take: Reducing Canadians’ Exposure to Air Pollution. Canadian Chemical Engineering Conference. 2022. Vancouver, ON, Canada.
Edwards TD, Wang JM, Jeong CH, Evans GJ. Direct roadside measurement of traffic-related CO2 emission trends using a simple sensor array. Air and Odor Management Conference and Technology Showcase. 2019. Toronto, ON, Canada.
Edwards TD, Movahhedinia H, Evans GJ. Laboratory and environmental evaluation of a low-cost CO2 sensor. XXIX Interamerican Congress of Chemical Engineering Incorporating the 68th Canadian Chemical Engineering Conference. 2018. Toronto, ON, Canada. Download slides here.
Posters
Edwards TD, Evans GJ. Investigating lane-by-lane effects on downwind air pollution. Emerging Mobility Scholars Conference. 2023. Toronto, ON, Canada. Download poster here.
Edwards TD, Evans GJ. Eight years of carbon dioxide concentrations and emissions in Toronto. University of Toronto Department of Chemical Engineering and Applied Chemistry’s 6th ChemE Exhibition and 37th Dinner. Awarded 2nd-place prize in Environment category. Download poster here.
Edwards TD, Evans GJ. Changes in a Toronto highway’s traffic patterns and emissions during pandemic shutdown. University of Toronto Department of Chemical Engineering and Applied Chemistry’s 5th ChemE Exhibition & 36th Dinner. Awarded 1st-place prize in Health category. Download poster here.
Edwards TD, Evans GJ. Indoor airborne disease transmission in transient-occupancy spaces. 71st Canadian Chemical Engineering Conference. 2021. Montréal, QC, Canada (Virtual). Download poster here.
Edwards TD, Evans GJ. Indoor airborne disease transmission in transient-occupancy spaces. University of Toronto Engineering Research Conference. 2021. Toronto, ON, Canada (Virtual). Download poster here.
Theses
Edwards TD. Novel methods for air emissions measurement and source apportionment applied at a major urban highway. Doctoral thesis. 2025. University of Toronto. Download thesis here.
Edwards TD. Measuring particulate matter above an artificial turf field. Bachelor’s thesis. 2018. University of Toronto. Toronto, ON, Canada. Download thesis here.
In-progress works
Edwards TD, Campbell J, Kulka R, Rouleau M, Seenundun S, Evans GJ, Van Ryswyk K. Characterization of aviation-sourced air pollution at Toronto’s Pearson International Airport.
Edwards TD, Zhang JY, Shin T. Estimating indoor pollution infiltration in Ontario with multi-study survey and pollutant datasets.