Acid Rain

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Acid Rain

Precipitation with low pH, usually resulting from excessive sulfur or nitrogen oxides in the atmosphere. Acid rain is detrimental to both plant and animal life. It has become less common since the 1970s, when governments began to take steps to reduce the sulfur released into the air.
References in periodicals archive ?
By July of 1998, the second report to Congress required by the Clean Air Act Amendments of 1990, prepared by the National Acid Precipitation Assessment Program (NAPAP), (147) was more than two years overdue.
The fact that the cadmium contamination level is higher in Sector 6, even though it is further away from the foundry than Sector 5, could be explained by the high sensitivity of the soil to acid precipitation (Shilts 1981).
While learning about the impacts of acid precipitation, one group of six campers took a hike along Fontinalis Brook.
In his contribution to a report prepared for the National Acid Precipitation Assessment Program, a massive federal study of acid rain and related environmental concerns, Husar reveals that the distance we can see in the United States - our "national vista" dimmed 25% from 1948 to 1983.
Chemical characterization of acid precipitation in Albany, New York.
Acid etch is a direct result of weathering that includes acid precipitation (rain, dew, or fog), often compounded by pollution fallout.
The parks were rated on haze, ozone, and acid precipitation.
We spent 10 years and $500,000,000 on the National Acid Precipitation Assessment Program, which produced meaningful scientific advances, but ultimately failed in its primary mission--to provide timely, policy-relevant information to guide the development of the Clean Air Act.
The criticisms leveled at the Global Change Research Program have suggested some unflattering comparisons with another environmental research behemoth, the National Acid Precipitation Assessment Program (NAPAP).
Atmospheric processes: For example, greenhouse effect, stratospheric ozone depletion, acid precipitation, and ground level ozone.