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International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE

Emissions of air pollutants by Canadian wildfires from 2000 to 2004

David Lavoué A B E and Brian J. Stocks C D
+ Author Affiliations
- Author Affiliations

A DL Modeling and Research, 22 Lady Belle Crescent, Brampton, ON, L6R 3B6, Canada.

B Environment Canada, Atmospheric Science and Technology Branch, Air Quality Research Division, 4905 Dufferin Street, Toronto, ON, M3H 5T4, Canada.

C Canadian Forest Service, Great Lakes Forestry Centre, 1219 Queen Street East, Sault Ste Marie, ON, P6A 2E5, Canada.

D Present address: BJ Stocks Wildfire Investigations Ltd, 128 Chambers Avenue, Sault Ste Marie, ON, P6A 4V4, Canada.

E Corresponding author. Email: david-lavoue@rogers.com

International Journal of Wildland Fire 20(1) 17-34 https://doi.org/10.1071/WF08114
Submitted: 7 July 2008  Accepted: 10 May 2010   Published: 14 February 2011

Abstract

A wildfire emission model, based on the Canadian Forest Fire Behaviour Prediction System and the Canadian weather forecast Global Environmental Multiscale model, was applied to forest fires that occurred in Canada between 2000 and 2004. Emissions of 21 chemical species and injection heights were calculated hourly for a regular 0.4° grid, with injection heights corresponding to the maximum altitude reached by a convective plume over a fire every hour. Wildfire emissions were compared with anthropogenic fossil fuel combustion sources at provincial, territorial and national levels. The 2002 fire season in central Quebec accounted for ~30, 60 and 80% of the annual primary greenhouse gases, carbon monoxide and black carbon emissions respectively for that province. In 2003, fires represented 60 and 20% of greenhouse gas emissions in Manitoba and British Columbia respectively. During the 2004 fire season in north-western Canada, when area burned was above average, fires were responsible for almost all greenhouse gas emissions occurring in the sparsely populated Yukon Territory and Northwest Territories. On average, between 2000 and 2004, fires contributed 10, 30 and 40% of Canadian annual greenhouse gases, CO and black carbon emissions respectively. This methodology for calculating wildland fire emissions is also applicable to other regions of the world.


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