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Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average.
Diagram depicting the sources and cycles of acid rain precipitation. Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide), or by the reduction of acid anions, like sulfate and nitrate within a lake, pond, or reservoir. [1]
Sulfuric acid rain in the atmosphere of Venus evaporates before reaching the ground due to the high heat near the surface. [2] Similarly, virgae happen on gas giant planets such as Jupiter. [citation needed] In September 2008, NASA's Phoenix lander discovered a snow variety of virga falling from Martian clouds. [3]
The deadly flooding that rocked Spain this week following intense, historic rainfall is so expansive and severe the area looked like an inland sea from space.. A year’s worth of rain fell in ...
Robert Angus Smith FRS (15 February 1817 – 12 May 1884), commonly referred to as Angus Smith, [1] was a Scottish chemist, who investigated numerous environmental issues.He is known for his research on air pollution in 1852, in the course of which he discovered what came to be known as acid rain.
The Eastern Canadian Provinces (dark green) were the focal point in Canada's mitigation plan towards minimizing acid rain in the country, and lead to the implementation of the Eastern Canada Acid Rain Program in 1985. The United States-Canada Air Quality Agreement initially prioritized the reduction of acid rain within each country. [13]
Rain before the storm. Helene’s rainfall would have been enough to cause flooding anywhere, but it was exacerbated by a weather front that had stalled over the Appalachians before then-Tropical ...
The Acid Rain Program is a market-based initiative taken by the United States ... the 6 Phase I coal units retired before 1990 ranged in age from 21–35 years when ...