Ozone Depletion
The phenomena which shows a steady decline in the total volume of ozone in the Earth's protective stratosphere or ozone layer, which filters the sun's harmful UVB rays.
EPA: Ozone Depletion
Detailed information about ozone depletion from the U.S. Environmental Protection Agency.
Depletion: Loss of water from surface water reservoirs or groundwater aquifers at a rate greater than that of recharge.
Deposit: Something dropped or left behind by moving water, as sand or mud.
ozone depletion - the reduction of the protective layer of ozone in the upper atmosphere by chemical pollution.
ozone hole - a hole or gap in the protective layer of ozone in the upper atmosphere.
Ozone Depletion is a thinning of the ozone layer, the blanket of ozone gas that shields us from the sun's damaging ultraviolet (UV) radiation.
Ozone Depletion Potential (ODP) - The is the ratio of a particular ozone depleting compound environmental effect compared to the depleting ability of a standard compound, CFC-11, which is arbitrarily defined as 1.0.
Ozone Depletion - Destruction of the Earth's ozone layer, which can be caused by the photolytic breakdown of certain chlorine- and/or bromine-containing compounds (e.g., chlorofluorocarbons), which catalytically decompose ozone molecules.
OZONE DEPLETION Destruction of the stratospheric ozone layer of the earth's athmosphere due to the release of chlorofluorocarbons, or CFCs, into the environment.
PA Paper, all grades.
Ozone Depletion - destruction of the stratospheric ozone layer, which shields the earth from ultraviolet radiation.
Ozone depletion potential (ODP) is a relative index indicating the extent to which a chemical product may cause ozone depletion. The reference level of 1 is the potential of CFC-11 and CFC-12 to cause ozone depletion.
Oxygen depletion
The reduction of the dissolved oxygen level in a water body.
Ozone ...
aquifer depletion Condition of declining water levels within the aquifer's structure because natural recharging from surface water and precipitation is inadequate to maintain normal level.
Depletion Curve- In hydraulics, a graphical representation of water depletion from storage-stream channels, surface soil, and groundwater. A depletion curve can be drawn for base flow, direct runoff, or total flow.
depletion of ions near an electrode. 3) The basis for
chemical analysis by a polarograph.
conductance. A rapid method of estimating the dissolved- ...
Ozone depletion, including the phenomenon known as the Ozone Hole.
Ozone layer
Tropospheric ozone
External links ...
Aquifer Depletion: Aquifer depletion occurs when groundwater is withdrawn from an aquifer at a rate greater than it can be replenished.
O ozone depletion potential
Definition (english only)
The integrated change in total ozone per unit mass emission of a specific compound, relative to the integrated change in the total ozone per unit mass of CFC-11.
Conversely, ozone depletion represents a radiative forcing of the climate system. There are two opposed effects: reduced ozone allows more solar radiation to penetrate, thus warming the troposphere.
Halon Bromine-containing compounds with long atmospheric lifetimes whose breakdown in the stratosphere causes depletion of ozone. Halons are used in firefighting.
Damage A deterioration in the quality of the environment not directly attributable to depletion or pollution. ...
Ozone depletion is a different problem, caused mainly by CFCs (like Freon) once used in refrigerators and air conditioners. In the past, CFCs were also used in aerosol spray cans, but that use was banned in the US in 1978.
These disturbances include ozone depletion, acid rain and climate change. The atmosphere is the earth's life-support system and needs to be treated carefully.
A large area of intense stratospheric ozone depletion over the Antarctic continent that typically occurs annually between late August and early October, and generally ends in mid-November.
Designation of amount of such depletion as an "ozone hole" is made when the detected amount of depletion exceeds fifty percent.
Sustainable: Systems that are sustainable focus on human economic systems that last longer and have less impact on the environment, particularly relating to concern over major global problems like the climate crisis and oil depletion.
One of several groups of chemicals with an ozone depletion potential of 0.2 or higher, including CFCS, Halons, Carbon Tetrachloride, and Methyl Chloroform (listed in the Clean Air Act), and HBFCs and Ethyl Bromide (added by EPA regulations).
Class I Substance: One of several groups of chemicals with an ozone depletion potential of 0.
eutrophication
Adverse change in the chemical and biological status of a body of water following depletion of the oxygen content caused by decay of organic matter resulting from high primary production as a result of enhanced input of nutrients.
Antarctic "Ozone Hole": Refers to the seasonal depletion of ozone in the upper atmosphere above a large area of Antarctica. (See: Ozone Hole.) ...
CFCs Chlorofluorocarbons, chemicals which result in a depletion of the ozone layer in the upper atmosphere.
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Eutrophication: Over-enrichment of a water body with nutrients, resulting in excessive growth of organisms and depletion of oxygen concentration.
Extinct species: A species that no longer survives anywhere in the world.
The pumping of water from a groundwater basin or aquifer in excess of the supply flowing into the basin; results in a depletion or "mining" of the groundwater in the basin.
Overflow Rate ...
The use of these materials and energy sources leads to depletion of the Earth's reserves and are characterized as such as they do not renew in human relevant periods (They are not being replenished or formed at any significant rate on a human time ...
Renewable Resources (B):
A renewable resource is a resource that can be replenished at a rate equal to or greater than its rate of depletion. Examples of renewable resources include corn, trees, and soy-based products.
(2) A combination of all methods of management and land use that safeguard the soil against depletion or deterioration by natural or man-induced factors. (3) The division of soil science dealing with soil conservation 1. and 2. above.
Meeting the needs of the present without diminishing the ability of future generations to meet their needs. Sustainability also means that human practices do not result in the permanent damage, alteration or depletion of the environment, ecosystems, ...
halocarbons = anthropogenic compounds of carbon combined with (a) halogen(s); those halocarbons containing fluorine, chlorine and bromine contribute to ozone depletion and to enhanced greenhouse effect ...
not capable of being naturally restored or replenished; a resource that is exhausted because it has not been replaced or because it is used faster than it can be replaced (e.g. oil, coal). Their use as material and energy sources leads to depletion ...
ENVIRONMENTAL FACTORS - LIGHT
A portable light and infrared gas analyzer may be used to measure the light response of photosynthesis in loblolly pine needles. The infrared gas analyzer measures CO2 depletion in a closed chamber.
Though the international response to the ozone-depletion problem is still an overall good-news story, it's important that we not give in to the forces that would have us go backwards.
overdraft The pumping of water from a groundwater basin in excess of the supply coming into the basin. Such pumping results in continuing depletion of the groundwater and a lowering of the water table.
The formulae use observations either of the depletion of the solar beam, temperature lowering in middle latitudes, or the quantity of solid matter dispersed as dust.
This results in high rates of production and decay, with associated ecological problems, such as oxygen depletion.
pollution, thermal.
Resource depletion zone The region around a consumer in which the availability of a resource is reduced, e.g. the zone around the absorbing surface of a root from which nutrients and water are absorbed.
 See also: Environment, Waste, Environmental, Water, Reduce
  
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