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Stratospheric Ozone
Web Site! As one of the early signatories to the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987, Canada has made significant progress in reducing the emissions of ... by industry. This site provides information on the history of stratospheric ozone layer depletion, the science of ozone depletion, Canada?s Ozone Layer Protection Program and the regulatory approach to protect the ...
www.ec.gc.ca

Ozone: Good Up High, Bad Nearby
How Does the Depletion of "Good" Ozone Affect Human Health and the Environment? As the stratospheric ozone layer is depleted, higher UV-b levels reach the earth ... store food, making them more susceptible to disease, insects, other pollutants, and harsh weather. "Bad" ozone damages the foliage of trees and other plants, ruining the landscape of cities, national parks ...
www.policyalmanac.org

The Stratospheric Protection Division | Ozone Layer Depletion | US EPA
Protocol and Title VI of the Clean Air Act, such as: production phase-out of ozone-depleting substances (ODS), stationary air-conditioning and refrigeration, motor vehicle refrigerant recycling, labeling of regulations, ... and policy issues. Note: SPD works to prevent skin cancer and to protect the stratospheric ozone layer. Ozone is involved in at least two other air quality issues, please visit the ...
epa.gov

Auto Air Conditioners and the Ozone Layer: Background | Ozone Depletion - Regulatory Programs | U.S. EPA
When allowed to escape, these chemicals drift some 30 miles above the Earth to the stratospheric ozone layer - a layer of gas that screens us from the sun's powerful ultraviolet (UV-B) radiation. ... service costs. EPA and the automotive industry are working together to make the transition away from ozone-depleting chemicals as smooth as possible, but we need your support and cooperation to make this ...
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Ozone Depletion | Chlorofluorcarbons | CFCs | Stratospheric Ozone
What are CFCs? Chlorofluorocarbons or CFCs ... molecule it causes one chlorine atom to break away. The chlorine atom then hits an ozone molecule consisting of three oxygen atoms and takes one of the oxygen molecules, destroying the ...
www.ozone-hole.org.uk

Ozone and Synthetic Greenhouse Gases
The common classes of these gases are chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons and methyl bromide. If emitted into the atmosphere, these substances will break down the stratospheric ozone layer Synthetic Greenhouse Gases (SGGs) were largely introduced as replacements for some ozone-depleting substances. Three of the six Kyoto Protocol gases - ...
www.environment.gov.au

Stratospheric Ozone Depletion tutorial
Some of the controversies surrounding the science and theories of ozone depletion are summarized here. Brief glossary of some of the terms and concepts used when ... with highlighted terms that you can click on for further information. Stratospheric ozone depletion is a concern because the ozone layer in the stratosphere keeps 95-99% of the suns ultraviolet ...
www.nas.nasa.gov

Ozone Chemistry
Sunlight is the major energy source for both making and destroying stratospheric ozone: When an Oxygen molecule absorbs a photon of light with a wavelength shorter than 200 nanometers (1 billionth of a ... known as a halocarbon. While all halogens have the ability to catalyze ozone breakdown, they have an unequal impact on the ozone layer. A catalyst is a compound which can alter the rate of a ...
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The ozone layer, depletion and uv radiation
Source: Nasa; Shuttle Solar Backscatter Ultraviolett InstrumentGlobal stratospheric ozone levels have declined, which means that the ozone layer is changing. Stratospheric ozone has large natural temporal and spatial variations, up ... nm (1 nanometer is a millionth of a millimeter, or 10 - 9m) is unaffected by ozone reduction, and is not as harmful as UV-B. UV-B radiation, emitted at 280- ...
www.eco-action.org

Ozone Depletion | Ozone Hole | Stratospheric Ozone
Depletion Search books at Amazon.co.uk ozone hole | ozone depletion | ozone layer | stratospheric ozone | Montreal Protocol Amazon.com customer? Click here. Ozone and Climate Change: A Beginner's Guide by ... yet achieved in managing human impacts on the global environment, providing an account of the ozone-depletion issues from the first attempts to develop international action in the 1970s to the ...
www.ozone-hole.org.uk