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Copy of Acid Rain
Transcript of Copy of Acid Rain
2. What causes acid rain?
3. How is acid rain formed?
4. Where does acid rain happen?
5. What are the effects of acid rain on our environment?
6. Canada's response to acid rain.
7. Sudbury, Ontario. Acid Rain What is it? "Acid rain" is a popular term referring to the deposition of wet and dry acidic components. Acid Rain How is it formed? Acid Rain What causes it? 1. Emissions that produce:
Sulfur dioxide (SO2)
Nitrogen oxides (NOx) Wet deposition Rain
Dew Dry deposition Gases
Dust particles 2. Natural Sources
occurring in Earth Geothermal activity
Bacterial decomposition Acid Rain Where does acid rain happen? Acid Rain Effects on... Lakes, rivers and streams As a lake becomes more acidic, organisms that form the basis of the lake's food chain are the first to disappear, affecting various types of fish and wild life.
Some life forms actually benefit from the increased acidity:
Lake-bottom plants, mosses, and black larvae thrive in acid lakes. Trees and forests Acid rain, acid fog and acid vapour damage the surfaces of leaves and needles Acid rain also depletes supplies of important nutrients (e.g. calcium and magnesium) from soils Trees exposed to acid rain may also have more difficulty withstanding other stresses, such as drought, disease, insect pests and cold weather. Humans Fine particles, or particulate matter (PM) in lungs which can cause inflammation and permanent tissue damage. According to
Environment Canada... Scientists and economists can estimate the costs of these health effects to Canadians by using computer models. If there was a 50% SO2 reduction in both eastern Canada and the U.S. (i.e., reductions above and beyond the current commitments in the Eastern Canada Acid Rain Program and U.S. Acid Rain Program) they estimated that...
550 premature deaths per year would be avoided;
1,520 emergency room visits per year would be unnecessary; and
210,070 asthma symptom days per year would be avoided. H Acid Rain What's being done? Canada's
Response 1985 The 1985 Eastern Canada Acid Rain Program
Roughly halved the SO2 emissions in Eastern Canada from the SO2 levels in 1980.
Invested in a science and monitoring program.
United Nations Economic Commission for Europe Convention on Long-Range Trans boundary Air Pollution (UNECE LRTAP)
Reduce emissions of trans boundary flows 30% by 1993. 1987 Canada adopted a Sulfur Oxides Management Area (SOMA)
reduce another 1.75 million tonnes of SO2 in southeastern Canada by 2000.
1991 The 1991 Canada-United States Air Quality Agreement
Cut sulfur and nitrogen oxides emissions.
Ensure visibility protection.
Prevent the deterioration of clean areas.
Conduct emissions monitoring. 1998 The Canada-Wide Acid Rain Strategy for Post-2000
Reduce sulfur dioxide emissions in eastern Canada and the US.
Protect clean areas from degradation.
maintain science and monitoring programs.
Report regularly to Ministers and the public. Timeline of actions taken by Canada Acid Rain Sudbury, Ontario Two major smelting companies: Inco (1902) and Falconbridge (1928).
Produces many elements like copper and cobalt, however it is known to produce mainly Nickel.
The Sudbury region has a well-known history for very high local SO2 emissions and associated acid deposition because of the mining industry.
Plants, water and wild animals have been greatly affected.
Between 1980 and 1997, Inco and Falconbridge reduced their SO2 emissions by 75% and 56% respectively. Nellie Lake Killarney 1:15 - 2:15 Reference Slide Briney, A. (n.d.) Acid rain:the causes, history and effects of acid rain. Retrieved from
Environment Canada. (2012, 00005 30). Acid rain faq. Retrieved from http://www.ec.gc.ca/air/default.asp?lang=En&n=7E5E9F00-1
Environment Canada. (2012, 00007 10). Activities to reduce acid rain. Retrieved from http://www.ec.gc.ca/air/default.asp?lang=En&n=F5CBD0BB-1
Nature acid rain eats away at northest. (2000, 00004 04). CNN Tech. Retrieved from
Theglobalproblemofacidrain. (n.d.) Retrieved from
http://go.hrw.com/hrw.nd/gohrw_rls1/pKeywordResults?keyword=st9 acid rain
[Web series episode]. In The One Canoe. Killarney: Youtube. Retrieved from
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