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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 22 | Copyright
Atmos. Chem. Phys., 17, 14119-14143, 2017
https://doi.org/10.5194/acp-17-14119-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 28 Nov 2017

Research article | 28 Nov 2017

Long-path measurements of pollutants and micrometeorology over Highway 401 in Toronto

Yuan You et al.
Data sets

NAPS Data Products National Air Pollution Surveillance Program of Government of Canada http://maps-cartes.ec.gc.ca/rnspa-naps/data.aspx?lang=en

2013 data Ontario Ministry of Transportation http://www.raqsb.mto.gov.on.ca/techpubs/TrafficVolumes.nsf/tvweb?OpenForm&Seq=6

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Short summary
A novel approach for traffic emission measurements is shown to have the capacity to provide high-time-resolution accurate concentrations of key air pollutants. A top-down method for quantifying real-world emission rates produced vehicular emission factor estimates for carbon monoxide that agreed well with bottom-up values. Significant ammonia and hydrogen cyanide emissions were observed. The main factors modulating the concentrations were turbulent mixing and traffic density.
A novel approach for traffic emission measurements is shown to have the capacity to provide...
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