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Multi-Year (2013–2016) PM2.5 Wildfire Pollution Exposure over North America as Determined from Operational Air Quality Forecasts

Authors :
Rodrigo Munoz-Alpizar
Radenko Pavlovic
Michael D. Moran
Jack Chen
Sylvie Gravel
Sarah B. Henderson
Sylvain Ménard
Jacinthe Racine
Annie Duhamel
Samuel Gilbert
Paul-André Beaulieu
Hugo Landry
Didier Davignon
Sophie Cousineau
Véronique Bouchet
Source :
Atmosphere, Vol 8, Iss 9, p 179 (2017)
Publication Year :
2017
Publisher :
MDPI AG, 2017.

Abstract

FireWork is an on-line, one-way coupled meteorology–chemistry model based on near-real-time wildfire emissions. It was developed by Environment and Climate Change Canada to deliver operational real-time forecasts of biomass-burning pollutants, in particular fine particulate matter (PM2.5), over North America. Such forecasts provide guidance for early air quality alerts that could reduce air pollution exposure and protect human health. A multi-year (2013–2016) analysis of FireWork forecasts over a five-month period (May to September) was conducted. This work used an archive of FireWork outputs to quantify wildfire contributions to total PM2.5 surface concentrations across North America. Different concentration thresholds (0.2 to 28 µg/m3) and averaging periods (24 h to five months) were considered. Analysis suggested that, on average over the fire season, 76% of Canadians and 69% of Americans were affected by seasonal wildfire-related PM2.5 concentrations above 0.2 µg/m3. These effects were particularly pronounced in July and August. Futhermore, the analysis showed that fire emissions contributed more than 1 µg/m3 of daily average PM2.5 concentrations on more than 30% of days in the western USA and northwestern Canada during the fire season.

Details

Language :
English
ISSN :
20734433
Volume :
8
Issue :
9
Database :
Directory of Open Access Journals
Journal :
Atmosphere
Publication Type :
Academic Journal
Accession number :
edsdoj.381afee341fd43b99e476079918c1132
Document Type :
article
Full Text :
https://doi.org/10.3390/atmos8090179