A11C-0080
Regional Modelling of Air Quality in the Canadian Arctic: Impact of marine shipping and North American wild fire emissions
Monday, 14 December 2015
Poster Hall (Moscone South)
Wanmin Gong1, Stephen R Beagley1, Junhua Zhang1, Sophie Cousineau2,3, Mourad Sassi3, Rodrigo Munoz-Alpizar3, Jacinthe Racine3, Sylvain Menard3 and Jack Chen4, (1)Environment Canada Toronto, Toronto, ON, Canada, (2)Environment Canada, Meteorological Service of Canada, Montreal, QC, Canada, (3)Environment Canada, Dorval, QC, Canada, (4)Environment Canada Ottawa, Ottawa, ON, Canada
Abstract:
Arctic atmospheric composition is strongly influenced by long-range transport from mid-latitudes as well as processes occurring in the Arctic locally. Using an on-line air quality prediction model GEM-MACH, simulations were carried out for the 2010 northern shipping season (April – October) over a regional Arctic domain. North American wildfire emissions and Arctic shipping emissions were represented, along with other anthropogenic and biogenic emissions. Sensitivity studies were carried out to investigate the principal sources and processes affecting air quality in the Canadian Northern and Arctic regions. In this paper, we present an analysis of sources, transport, and removal processes on the ambient concentrations and atmospheric loading of various pollutants with air quality and climate implications, such as, O3, NOx, SO2, CO, and aerosols (sulfate, black carbon, and organic carbon components). Preliminary results from a model simulation of a recent summertime Arctic field campaign will also be presented.
