Skip to Main Content
Acid precipitation in CanadaAuthor(s): P. W. Summers; D. M. Whelpdale
Source: In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. p.411
Publication Series: General Technical Report (GTR)
Station: Northeastern Research Station
PDF: Download Publication (460.53 KB)
DescriptionThe total annual emissions of sulfur oxides and nitrogen oxides in Canada are estimated to be 7.2 x 106 tons and 1.4 x 106 tons, respectively. These figures represent 5% and 2%, respectively, of the estimated worldwide anthropogenic emissions. Nearly two-thirds of the Canadian SO2 emissions come from primary smelters located in low population areas. The remainder originate from natural gas processing, pulp mills, fuel combustion and transportation in the more heavily populated areas. Transportation is the major source of oxides of nitrogen. No coordinated precipitation sampling has been carried out on a national basis prior to the establishment of the World Meteorological Organization regional stations in 1974, but several local projects in problem areas have been conducted over the last 20 years. These data are reviewed with respect to sulphate and nitrate content, and when available, the pH. The geographical distribution of acid rain in Canada is discussed in relation to main source areas of pollutants, prevailing meteorological conditions and precipitation type. Finally, the extent of current and potential problems associated with acid rain is discussed, and current and recommended future monitoring and research programs are outlined.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationSummers, P. W.; Whelpdale, D. M. 1976. Acid precipitation in Canada. In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. p.411
- Potential effects of acid precipitation on soils in the humid temperate zone
- Modeling atmospheric effects - an assessment of the problems
- Developing regulatory programs for the control of acid precipitation
XML: View XML