Modelling Regional Air Quality in the Canadian Arctic: Impact of North American Wildfire and Arctic Shipping Emissions

Air quality model simulations were carried out for the 2010 northern shipping season over a regional Arctic domain. Preliminary evaluation of the base model simulation shows that the model is able to capture the general trends of the observed ambient ozone and PM2.5 in the northern region. Analysis on relative contributions from North American wildfires and Arctic marine/shipping to ambient concentrations of various pollutants and their depositions in the Canadian Arctic and northern regions was conducted.