Relationships between sulfate and nitrate ion concentrations and rainfall pH for use in modeling applications

McNaughton, Daniel J.

doi:10.1016/0004-6981(81)90108-6

Cited by 18 publications

(1 citation statement)

References 3 publications

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“…If SOz and NO ... , after reaction with substances in the atmosphere , are equally prone to produce H +, one would 0 100 expect H + to correlate most strongly with (SO/ -,+ N0 3 -), provided that the variances are comparable , as in this case. In fact , and contrary to McNaughton 's analysis of a much smaller number of sites (6), the correlation is slightly less (? = 0.83) than that between H + and SO/-alone .…”

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confidence: 65%

Acid Rain: Ionic Correlations in the Eastern United States, 1980-1981

Gorham

Martin

Litzau

1984

Science

102

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Hydrogen ions in precipitation are correlated much more closely with sulfate than with nitrate, whereas ammonium ions are correlated more closely with nitrate than with sulfate. Target loadings of 14 to 16 kilograms of wet sulfate deposition per hectare per year, instead of 20 as suggested hitherto, are probably necessary to produce average pH values of 4.6 to 4.7, the approximate boundary levels for damage to aquatic ecosystems. Cluster analysis reveals that there are three linked groups of ions related to air pollution, agriculture, and sea spray.

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confidence: 65%

Acid Rain: Ionic Correlations in the Eastern United States, 1980-1981

Gorham

Martin

Litzau

1984

Science

102

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Modeling of First Plume Encounters with Precipitation

McNaughton

1982

Long-Range Transport of Airborne Pollutants

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Abstract. A regional air pollutant transport model was used to simulate the fate of S emissions in the northeast United States. Hourly calculations were analyzed to describe trajectory characteristics and mass balances as pollutant trajectories first encounter precipitation during transport away from emission sources. Model results include air concentrations of SO 2 and sulfate, dry deposition values, and sulfate concentrations scavenged by precipitation, along with trajectory statistics. Results of sensitivity tests are compared to base case simulations which consider all precipitation events as a means of suggesting priorities for future regional transport model development.

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