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Climate SMART: Be cool - reduce global warming & climate risks

The Science of Climate Change & Air Quality

SMOG, Acid Rain, and Climate Change: The Air We Breathe

Picture Credits: Patient and health professional - Health Canada’s website; Traffic - Wayne Groszko, Environment Canada; Money Flying - Microsoft clip art; Loon - Logo of the Canadian Wildlife Service.

Driving cars (gas), heating our homes (oil), and running factories or power plants (coal for energy) all contribute to the burning of fossil fuels and release of green house gases into the atmosphere. This contributes to climate change and smog.

In Canada, transportation is the source of more than 1/2 the emissions of nitrogen oxides (NO2) that leads to smog, and roughly 1/3 of the green house
gas emissions that contribute to Global Warming.

We have smog in Atlantic Canada! Because we are downwind of Ontario, Quebec and the Northeast USA, we are the “tail pipe of North America.” The accumulation of local air pollution and smog carried by winds from outside the region has resulted in average ozone levels in Nova Scotia and southern New Brunswick that are among the highest in all of Canada.




In 1998, Aylesford, Nova Scotia, recorded the highest annual average level of ground level ozone concentrations of any measured location in Canada .


Environment Canada, 2000. National Air Pollution Surveillance (NAPS) Network Annual Summary for 1998, Environmental Technology Advancement Directorate Report EPS 7/AP/31.

A pollutant released from the exhaust pipe of an automobile in Boston today, may well damage the air quality in Halifax tomorrow.