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.
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 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 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 - 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.
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.
Ozone depletion, including the phenomenon known as the Ozone Hole.
Ozone layer
Tropospheric ozone
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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.
A substance with an ozone depletion potential of less than 0.2. All HCFCs are currently included in this classification. (See Global warming potential.)
Source: Terms of the Environment
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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.
Class I Substance: One of several groups of chemicals with an ozone depletion potential of 0.
halon Bromine-containing compounds, used in fire-fighting, with long atmospheric lifetimes whose breakdown in the stratosphere causes ozone depletion.
halophyte A plant that grows in salty soil or water.
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 ...
measurement of ozone levels. If, for example, 100 DU of ozone were brought to the earth's surface they would form a layer one millimeter thick. Ozone levels vary geographically, even in the absence of ozone depletion.
 See also: Ozone, Depletion, Environmental, Environment, Water
  
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