Marianne Hatzopoulou

Department Chair


Tier 1 Canada Research Chair in Transport Decarbonization and Air Quality

Director, Positive Zero Transport Futures

Head of the Transportation and Air Quality research group TRAQ

Visit the Facebook page of the Transportation and Air Quality Research Group 

The research of the TRAQ research group was recently featured in the documentary Something in the Air, The Nature of Things:

Marianne Hatzopoulou1

Marianne Hatzopoulou
Department of Civil & Mineral Engineering
University of Toronto
35 St. George St., GB107
Toronto, Ontario
Canada, M5S 1A4

Tel.: 416-978-0864


Marianne Hatzopoulou is Professor in the Department of Civil and Mineral Engineering at the University of Toronto and Tier 1 Canada Research Chair in Transport Decarbonization and Air Quality. She leads the Transportation and Air Quality (TRAQ) research group studying the interactions between transportation, air quality, climate change, and public health; she published 150 publications on these topics. Prof. Hatzopoulou is also the Director of Positive Zero Transport Futures, a living lab ecosystem for testing transport decarbonization innovations with positive societal outcomes. Prof. Hatzopoulou is on the Canadian team of researchers who were the 2021 recipients of the NSERC Brockhouse Canada Prize for Interdisciplinary Research in Science and Engineering. In 2022, she received the University of Toronto Engineering Alumni Network 2T5 Mid-Career Achievement Award. She is an associate editor of the journal Transportation Research Part D: Transport and Environment and the current chair of the Transportation Research Board Standing Committee on “Air Quality and Greenhouse Gas Mitigation” (2023-2026).

Her research bridges transportation and environmental analysis; and her main expertise is in modelling of road transport emissions and urban air quality as well as evaluating population exposure to air pollution. She is interested in capturing the interactions between the daily activities and travel patterns of urban dwellers and the generation and dispersion of traffic emissions in urban environments. She leads an active research group focusing on modelling traffic emissions and near-road air quality as well as near-road air pollution monitoring and characterization.


BSc (Physics, American University of Beirut, 1999)
MSc (Envtal Technology, Civil Eng., American University of Beirut, 2001)
PhD (Transportation Engineering, Civil Eng., University of Toronto, 2008)
Postdoctoral training (University of Toronto, 2009)
Postdoctoral training (Massachusetts Institute of Technology, 2010)

Research Interests

Traffic-Related Air Pollution

Urban Air Quality

Transportation Engineering

Transportation Planning


Research in Images

UrbanScanner platform for measuring air quality and capturing images of the urban environment developed by TRAQ group in collaboration with industrial partner

PEMS (Portable Emissions Monitoring System) testing of exhaust for a gasoline direct injection SUV while driving in Toronto

Distribution of ambient NO2 across the Montreal Island

Distribution of Black Carbon levels across Toronto

Distribution of ultrafine particles in Toronto

Black Carbon across cycling routes in Toronto

Ultrafine particles along cycling routes in Toronto

Testing Aeroqual S500 sensors againts fixed station (RSQA) in Montreal

Traffic-related emission inventory in the Greater Toronto and Hamilton Area

Annual number of years of life lost per 100,000 persons due to air pollution from passenger vehicles (332 premature deaths per year) and commercial vehicles (407 premature deaths per year)

Monetized social benefits

Please find descriptions of research studies on the Positive Zero website:

Thesis Abstracts for TRAQ Graduates (MASc and PhD)



Course CodeTitle & DescriptionSessionDay(s)Start TimeEndSection
Modelling Transport Emissions

Summer 2023
May 16 - June 22
(add deadline-May 19
drop deadline-May 30)

Tuesdays and Thursdays11:0014:00
CME261HFall 2020Scheduled by the Office of the Faculty Registrar.


Welcome to CivMin’s new Chair: Prof. Marianne Hatzopoulou

Dean Chris Yip announces Prof. Marianne Hatzopoulou (CivE PhD 0T8) as new CivMin Chair   To: Members of the Faculty of Applied Science and Engineering From: Christopher Yip, Dean Date: June 28, 2023 Re: Appointment of Chair, Civil and Mineral Engineering I am pleased to announce the appointment of Professor Marianne Hatzopoulou (CivE PhD 0T8) […]

Sensors installed across Toronto for heat study

Second summer of heat study sees 200 sensors set up at homes and venues across Toronto    Unique additions to homes across Toronto are being made for a second summer as part of a collaborative study. One resident described the addition of a temperature and humidity measuring device as a, “Porch earring,” referring to the […]

From tires to brakes, U of T researchers tackle ‘non-tailpipe’ air pollution from vehicles

CivMin’s Professor Marianne Hatzopoulou is part of the U of T team of researchers conducting a three-year study to learn more about tailpipe vs. non-tailpipe emissions With the increasing popularity of electric vehicles (EVs), car-related air pollution will be less of a concern, right? Think again, say a group of University of Toronto researchers who […]