The Atmospheric Science Division evaluates the impact of acidifying emission control programs by analyzing the changes in acid deposition at regionally-representative monitoring sites in the Atlantic Region and determining which areas are exposed to continuing acidification because deposition levels exceed the environmental damage level ("critical load").

The fight against acid rain is not over yet. Acid deposition exceeds critical loads across large portions of eastern Canada, including most of New Brunswick and Nova Scotia. As a result, acidification in these areas will continue, the biodiversity of aquatic ecosystems will remain under threat, and more damage to forest health and productivity will occur unless further deep cuts in sulphur dioxide and nitrogen oxide emissions in Canada and the United States are implemented. Source: 1997 Canadian Acid Rain Assessment (Vol. 1, p.16). An Environment Canada Acid Precipitation Collector

General Information: FAQ on Acid Rain Environment Canada's Acid Rain web site Environment Canada - Atlantic Region's Air Pollution web site Scientific Reports: Trends in Acid Deposition in the Atlantic Provinces (1980-1998) Chemistry and Deposition of Acidifying Substances by Marine Advection Fog in Atlantic Canada.