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- Title
Determining the Validity of using Summer Monitoring to Estimate Annual Deposition of Acidic Pollutants in Southern Ontario, Canada.
- Authors
Gough, William A.; Lillyman, Carrie; Karagatzides, Jim; Tsuji, Leonard J. S.
- Abstract
Programs such as MARYP have produced good quality environmental data during a summer collection period. Such programs can produce cost effective regional acid rain data. The question arises whether summer collection (July, August) of acid rain deposition and concentration data can be used to reliably estimate annual acid deposition? Precipitation, sulfate and nitrate deposition and concentration data for southern Ontario at four sites were used. Ratios of summer to annual deposition, concentration and precipitation revealed that concentration tended to have the most spatial and temporal consistency. Correlation analysis confirmed that deposition was strongly dependent on precipitation. However, extremely high precipitation in 1992 at two of the sites demonstrated a dilution effect, where deposition was not strongly dependent on precipitation but concentration was strongly dependent on precipitation. However, at Warsaw Caves, downstream of the Greater Toronto Area (GTA), sulfate deposition was strongly dependent on precipitation in 1992 indicating a point source of sulfate in the GTA. It is concluded that annual deposition can be estimated from summer concentration values and annual precipitation, especially in years when there is not excessive summer precipitation. Thus seasonal collection programs can play a key role in providing high quality regional data.
- Subjects
SOUTHERN Ontario; ENVIRONMENTAL monitoring; ACID rain; POLLUTANTS; SUMMER; ACID precipitation (Meteorology)
- Publication
Water, Air & Soil Pollution, 2002, Vol 137, Issue 1-4, p305
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1023/A:1015599302746