Nitrogen Oxides Emissions   Nitrogen Oxides Emissions   Please
note: The data on this page are current as of January 2013.  Key
Messages    • Canada gets a “D” and ranks 16th out of 17 peer
countries.   • Canada’s per capita nitrogen oxides emissions
have been decreasing since 1990.   • Canada needs to do more to
reduce emissions from the transportation, electricity, and
industrial sectors.  Nitrogen Ozides Emissions, 2009  Putting
urban nitrogen dioxide concentration in context  Nitrogen oxides
(NOx) contribute to smog and acid rain and are hazardous to
human health and the environment. Nitrogen dioxide (NO2) is
released during the combustion of fossil fuels, mainly by
vehicles, electricity generation, and manufacturing processes.1
NO2 is primarily a traffic-related pollutant, and emissions are
highest in urban areas. It can block the transmission of light,
reducing visibility in urban areas. On a larger scale, nitrogen
oxides can originate in one place and be transported long
distances by prevailing winds,