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Ozone Reactions: Physics and Chemistry of the Stratosphere
Ozone Depletion News Ozone Hole 2005 Major Ozone Loss over Antarctic CIESIN Thematic Guides: Environmental Effects of Ozone Depletion. UNEP's OzonAction Programme: Creating Enabling Conditions Ozone Science: A Canadian Perspective Effects of Ozone ... Kerr, R. A. 1996: Ozone Destroying Chlorine Tops Out. Science, 271, 32. Bekki, S., K. S. Law and J. A. Pyle. 1994: Effect of Ozone Depletion on ...
www.meteor.iastate.edu

situation
Earth system. Ozone is a very important gas, because stratospheric ozone absorbs most harmful ultraviolet radiation, preventing it from reaching Earth' ... were largely responsible for the ozone loss. As a result, the Montreal Protocol was adopted in 1987, calling for the worldwide elimination of CFCs and other ozone-destroying substances. So far, the ...
www.cotf.edu

Ozone Chemistry
Formation and destruction of ozone Sunlight is the major energy source for both making and destroying stratospheric ozone: When ... ; causing bromine to be from 10 to 100 times more effective than chlorine at destroying ozone. From 30-60% of bromocarbons released to the atmosphere are man-made (methyl bromide ...
www.nas.nasa.gov

FMI - Research - Atmosphere - Ozone and UV radiation
In addition, ozone is dissipated by nitrous oxide. Due to the fact that the compounds destroying ozone ... freons and other ozone-destroying compounds from drifting into the stratosphere, the damage to the ozone layer will gradually be repaired by itself. The ozone layer is estimated ...
fmi.fi

ESB: Spray Foam Producers Solve Ozone Problem
Producers Solve Ozone Problem Spray Foam Producers Solve Ozone Problem Manufacturers of rigid foam insulation board have successfully phased out the ozone-destroying chlorofluorocarbons (CFCs) once used as blowing agents, replacing them with hydro-chlorofluorocarbons (HCFCs). But the HCFCs aren't 100 percent ozone-friendly, either, ...
oikos.com

Science - The Antarctic Ozone Hole
Antarctic ozone hole. Although some ozone depletion also occurs in the Arctic during the Northern ... low for as many weeks which results in less ozone depletion. Owing to regulations on the production and use of certain ozone-destroying chlorinated compounds, which went into effect in January ...
www.ozonelayer.noaa.gov

Science and the Environment Bulletin: Climate Change Increasing Ozone Loss in the Arctic Stratosphere
Two factors make ozone destruction in the polar regions brutally efficient during the spring. ... from the sun, and could lead to reduced ozone levels over southern Canada as ozone is redistributed in the atmosphere. Stratospheric ozone observatory at Eureka on the west coast of ...
www.ec.gc.ca

Just the Facts for MVACs: EPA Regulatory Requirements for Servicing of Motor Vehicle Air Conditioners | Ozone Depletion - Regulatory Programs | U.S. EPA
Requirements for Servicing of Motor Vehicle Air Conditioners Our Threatened Ozone Layer The ozone layer acts as a blanket in the stratosphere that ... CFC-12 (also known by the trade name Freon) are rapidly destroying this layer of gas 10 to 30 miles above the earth' ... . A single chlorine atom can destroy over one hundred thousand ozone molecules. Ozone loss in the atmosphere is likely to lead to an ...
epa.gov

Reports to the Nation on Our Changing Planet: Our Ozone Shield
According to this idea, the cold conditions above Antarctica amplified the ozone- destroying power of CFCs and halons, accelerating the loss of this region. The three separate ... -based instruments and balloons to probe the stratosphere, this team found high levels of ozone-destroying compounds. A year later, the United States, in conjunction with other countries, sent a ...
www.ogp.noaa.gov

Why the banning of Chlorofluorocarbons is paranoia.
The Rowland theory ignores the equilibrium nature of ozone in the layer. The ozone molecules are constantly being created and destroyed— ... same narrow band of ultraviolet light breaks down both CFCs, releasing their ozone-destroying chlorine, as well as oxygen, creating ozone, there is a 'competition' between the two processes for this necessary ...
ourcivilisation.com