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Vehicles
Vehicular Pollution The large majority of today's cars and trucks travel by using internal combustion engines that burn gasoline or other fossil fuels. The process of burning gasoline to power cars and trucks contributes to air pollution by releasing a variety of emissions into the atmosphere.... Read more |
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pollution
pollution contamination of the environment as a result of human activities. The term pollution refers primarily to the fouling of air, water, and land by wastes (see air pollution ; water pollution ; solid waste ). In recent years it has come to signify a wider range of disruptions to... Read more |
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Thermal pollution
Thermal Pollution The broadest definition of thermal pollution is the degradation of water quality by any process that changes ambient water temperature. Thermal pollution is usually associated with increases of water temperatures in a stream, lake, or ocean due to the discharge of heated water... Read more |
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Point Source
Point Source Point source pollution is contamination that enters the environment through any discernible, confined, and discrete conveyance, such as a smokestack, pipe, ditch, tunnel, or conduit. Point source pollution remains a major cause of pollution to both air and water. Point sources are... Read more |
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air pollution
air pollution contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health. The major sources of air pollution are transportation engines, power and heat generation, industrial processes, and the burning of solid... Read more |
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smog
smog [ sm oke+f og ], dense, visible air pollution . Smog is commonly of two types. The gray smog of older industrial cities like London and New York derives from the massive combustion of coal and fuel oil in or near the city, releasing tons of ashes, soot, and sulfur compounds into the air. The... Read more |
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lichen zone
lichen zone An area with a characteristic lichen flora ranging from complete absence to a full complement of foliose and fruticose species, depending on the level and type of air pollution present in the area. The standardized lichen zones for England and Wales range from zone 0 (complete absence),... Read more |
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temperature inversion
temperature inversion condition in which the temperature of the atmosphere increases with altitude in contrast to the normal decrease with altitude. When temperature inversion occurs, cold air underlies warmer air at higher altitudes. Temperature inversion may occur during the passage of a cold... Read more |
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Clean Air Act
Clean Air Act (1963) Craig Oren Excerpt from the Clean Air Act to protect and enhance the quality of the Nation's air resources so as to promote the public health and welfare and the productive capacity of its population; to initiate and accelerate a national research and development program to... Read more |
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Cleanup
Cleanup The cleanup of environmental pollution involves a variety of techniques, ranging from simple biological processes to advanced engineering technologies. Cleanup activities may address a wide range of contaminants, from common industrial chemicals such as petroleum products and solvents ,... Read more |
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anticyclone
...dominated by air moving upward...than usual. If temperature is measured at...and dry and the temperature decreases with...shallow layer, the inversion layer, in which...conditions the temperature decreases at a...impenetrable ... |
 "Rocky Mountain News (Denver, CO)")
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BROWN DOWNTOWN INVERSION SQUEEZES POLLUTANTS INTO OPAQUE LAYER OF AIR.(Local)
...exertion. Though pollution levels weren...federal clean air standards...winter day's pollution. A particularly effective temperature inversion - a phenomenon...a ``tight lid'' over the region, sealing ... |
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DEQ INVITES CITIZENS TO PARTICIPATE IN LOCAL AIR QUALITY INVOLVEMENT GROUP.
...participate in a local air quality public involvement...properly manage air quality on the Idaho...conditions due to temperature inversions that trap pollution by acting as a lid on the bowl-like...As a result, ... |
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Blue haze mystery starting to dissipate: ; State investigators focusing on...
...layer of warm air, an unusually potent temperature inversion that appeared...temperature inversions form a lid over the area...source of air pollution in West Virginia...reduce the ... |
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Haze burns off, finally revealing post-card view of mountains.(Knight Ridder...
...mostly because of pollution. "All of that...system creates air that is sinking...upward, creating a temperature inversion. It kind of puts a lid on all the pollution. It gets pretty...Ceremony, the ... |
 "The Philadelphia Daily News (Philadelphia, PA)")
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Haze burns off, finally revealing post-card view of mountains.
...mostly because of pollution. "All of that...system creates air that is sinking...upward, creating a temperature inversion. It kind of puts a lid on all the pollution. It gets pretty...Ceremony, the ... |
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Worst Smog in Five Years Chokes Los Angeles Area.
...the South Coast Air Quality Management District. Air pollution officials for...an atmospheric temperature inversion is trapping pollution. "It's the...that act like a lid on the atmosphere...increases ... |
 "Deseret News (Salt Lake City)")
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S.L. County will create a panel on air pollution
...valley's air pollution. On Thursday...state's air pollution. Utah Physicians...curtail the air pollution problem, which...quality, with temperatures below freezing...create an inversion. ... |
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S.L. County panel tackles air pollution
...Lake County's air problem now...of Governments Air Quality Subcommittee...to see better air here," Wilson...to reduce air pollution in the valley...quality, with temperatures below freezing...did -- create ... |
 "Daily Mail (London)")
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Want to keep your heart and lungs healthy? Don't sit next to the photocopier;...
...stress -- it's air pollution, according to...attack.' Air pollution is not only linked...attack on days when pollution is high. So how...days, you have a temperature inversion, where a warm...like a saucepan ... |
 "The Spokesman-Review (Spokane, WA)")
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Stale air, wood-burning ban not likely to go away soon ; Long, stagnant...
...Stagnant air over the...County Air Pollution Control Authority as pollution levels increased...sets up a temperature inversion, a meteorological...elevations. Inversions act like a lid on ... |
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