Gourt > Science > Environment > Air Quality > Acid Deposition
Acid rain occurs when sulfur dioxide and nitrogen oxides are emitted into the atmosphere, undergo chemical transformations and are absorbed by water droplets in clouds. The droplets then fall to earth as rain, snow, or sleet. This can increase the acidity of the soil, and affect the chemical balance of lakes and streams. Acid rain is sometimes used more generally to include all forms of acid deposition - both wet deposition, where acidic gases and particles are removed by rain or other precipitation, and dry deposition removal of gases and particles to the Earth's surface in the absence of precipitation.[http://www.epa.gov/acidrain/
Acid rain is defined as any type of precipitation with a pH that is unusually low (Brimblecombe, 1996). Dissolved carbon dioxide dissociates to form weak carbonic acid giving a pH of approximately 5.6 at typical atmospheric concentrations of CO2 (Seinfeld and Pandis, 1998). Therefore a pH of <5.6 has sometimes been used as a definition of acid rain However, natural sources of acidity mean that in remote areas, rain has a pH which is between 4.5 and 5.6 with an average value of 5.0 and so rain with a pH <5 is a more appropriate definition [http://www.enviroliteracy.org/article.php/2.html.
Acid rain accelerates weathering in carbonate rocks and accelerates building weathering. It also contributes to acidic rivers, streams, and damage to trees at high elevation. Efforts to combat this phenomenon are ongoing.
More on [ Acid rain ]
Dedicated volunteers vital in acid-rain testing - Worcester Telegram
Tue, 26 Aug 2008 08:33:12 -0000
Dedicated volunteers vital in acid-rain testingWorcester Telegram, MA - Aug 26, 2008He was one of about 300 volunteers recruited to form the state’s first data collection system to determine the effects of acid deposition on water bodies. ...
Acid Rain Reduces Methane Emissions From Rice Paddies - Science Daily (press release)
Wed, 06 Aug 2008 20:28:43 -0000
Acid Rain Reduces Methane Emissions From Rice PaddiesScience Daily (press release) - Aug 6, 2008Suppression of rice methane emission by sulfate deposition in simulated acid rain. Journal of Geophysical Research, 2008; 113G00A07 DOI: ...
Last Chaos Strayana Details Released - Gamers Hell
Thu, 28 Aug 2008 19:06:17 -0000
Last Chaos Strayana Details ReleasedGamers Hell, UK - 1 hour agoClouds scatter the skies of the dark swamp filled with poisonous acid rain. Players’ attributes will be affected by the acid rain and he only way for ...
Acid Rain Molecule Tells All - Discovery Channel
Mon, 18 Aug 2008 14:34:33 -0000
Acid Rain Molecule Tells AllDiscovery Channel - Aug 18, 200818, 2008 -- A mysterious chemical reaction that transforms acid rain into other pollutants has given up its secret to scientists, and an unusual molecule is ...
Uncertainties in the Current Knowledge of Some Atmospheric Trace ... - RedOrbit
Wed, 27 Aug 2008 13:20:21 -0000
Uncertainties in the Current Knowledge of Some Atmospheric Trace ...RedOrbit, TX - Aug 27, 2008Although emission issues are of concern, so also is atmospheric deposition to cropping systems, including wet and dry nitrogen, minerals, ...
Strange Molecule In The Sky Cleans Acid Rain, Scientists Discover - Science Daily (press release)
Wed, 13 Aug 2008 02:51:20 -0000
Strange Molecule In The Sky Cleans Acid Rain, Scientists DiscoverScience Daily (press release) - Aug 12, 2008What doesn't get oxidized in the atmosphere falls back to Earth in the form of acid rain. "The chemical details of how the atmosphere removes nitric acid ...
Acid Deposition Monitoring and Research in the UK - Information about the acid deposition monitoring networks managed by the National Environmental Technology Centre (AEA Technology plc).
Acid Rain - Facts, news, children's resources, and links from Environment Canada.
Acid Rain News - Features links to news articles and related sites. Includes history, scientific background information and FAQ.
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Effects of Acid Rain on Aquatic Ecosystems - Short primer, from University of Toronto.
Margot's Acid Rain SEA Project - Student's fun and informative site about acid rain, in North Carolina and in general.
National Atmospheric Deposition Program (NADP) - US federal-state-NGO cooperative effort operating a national precipitation monitoring network to observe geographic and temporal trends in acidity, mercury, and other attributes. Includes data, maps, and meeting announcements.
Meta Description: [ The National Atmospheric Deposition Program. ]
PPRP Atmospheric Deposition Measurement and Analysis - Information about and from regional acid deposition monitoring programs in the Chesapeake Bay watershed (USA).
Meta Description: [ Chesapeake Bay resource center of the Maryland
Department of Natural Resources provides information on the Chesapeake Bay. ]
U.S. Geological Survey Data and Reports on Acid Rain, Atmospheric Deposition and Precipitation Chemistry - Information resources on acidic deposition in the United States.
UK Acid Waters Monitoring Network - Monitors the ecological impact of acid deposition in areas of the United Kingdom believed to be sensitive to acidification.
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UK DTI Energy and the Environment Programme - The programme aims to assess the impacts of proposed energy related environmental policies and regulation on UK industry, and their cost implications for the final consumer.
Meta Description: [ The Energy and Environment Research Programme provides scientific and economic analysis to support and inform energy policy and sustainable development ]
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US EPA - Acid Rain - Information about causes and effects, how acid rain is measured, and what is being done to solve the problem. Includes activities for students.
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US EPA Acid Rain Program - About EPA efforts reduce electric utilities' emissions of sulfur dioxide and nitrogen oxides, the pollutants responsible for acid deposition. The program includes a system of tradable SO2 emissions allowances.
What is Acid Rain and What Causes It? - A discussion of the causes and effects of acid rain, and possible policy solutions.
| much better for the environment. · Hemp fuel burns clean. Petroleum causes acid rain due to sulfur pollution. · The use ... | |
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