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Results 1 - 10 from 47 for chlorine and bromine in 0.452 sec.

Ozone: Good Up High, Bad Nearby
(NOx), and volatile organic compounds (VOC) in the presence of sunlight. Ozone has the same chemical structure whether ... by the intensity of the sun's ultraviolet rays and release chlorine and bromine molecules, which destroy "good" ozone. One chlorine or bromine molecule can destroy 100,000 ozone molecules, causing ...
www.policyalmanac.org

Controversy
Large amounts of lab evidence prove a number of pathways by which chlorine and bromine destroy ozone in carefully simulated stratospheric conditions. There is more than sufficient evidence for ... for the following reasons- Very weak data showing any link at all between ozone-depletion and UV-increase. Singer cites a recent Canadian study that appeared to be prematurely alarmed at ...
www.nas.nasa.gov

FMI - Research - Atmosphere - Ozone and UV radiation
UV radiation, as a consequence of which highly reactive chlorine and bromine atoms and their compounds are born. During its lifetime, a single atom or compound of this ... the ozone layer is being monitored globally with the aid of satellite observations. Announcements regarding ozone and UV observations are made as the need arises. Predictions on the development of UV radiation ...
fmi.fi

Frequently Asked Questions
What are the reactive halogen gases that destroy stratospheric ozone? What are the chlorine and bromine reactions that destroy stratospheric ozone? Why has an "ozone hole" appeared over Antarctica when ... ? How large is the depletion of the global ozone layer? Do changes in the Sun and volcanic eruptions affect the ozone layer? Are there regulations on the production of ozone-depleting ...
www.ozonelayer.noaa.gov

Science - Ozone Depletion
Increased exposure to UV-B has harmful effects on plants and animals, including humans. The chlorine and bromine in human-produced chemicals such as the ones known as chlorofluorocarbons ... depleting ozone in the stratosphere. The figure shows a simplified cycle of reactions in which chlorine (Cl) destroys ozone (O3). http://www.ozonelayer.noaa.gov/science/o3depletion.htm Last updated on ...
www.ozonelayer.noaa.gov More from this site

Science and the Environment Bulletin: Climate Change Increasing Ozone Loss in the Arctic Stratosphere
With the return of sunlight in the spring, these unstable compounds release large volumes of chlorine and bromine-powerful ozone-depleting catalysts, each molecule of which can destroy thousands of ozone molecules before returning to the troposphere and being removed by other chemical reactions. Measurements of a single air mass as it moves around the Arctic ...
www.ec.gc.ca

EIA - The Environmental Investigation Agency: Global Environment Campaign | Campaign Index
Antarctic resulting from widespread use of a range of ozone-depleting substances (ODS). Chemicals containing chlorine and bromine are the culprits causing damage to the ozone layer. These include chlorofluorocarbons (CFCs) mostly used for refrigeration and air-conditioning, and halons, used to extinguish fires. In 1987 ...
www.eia-international.org

Ozone Hole
Although natural phenomena can cause temporary ozone losses, chlorine and bromine released from man-made synthetic compounds such as CFCs are now accepted as the ... vortex - which isolates Antarctica from the rest of the world during the Southern Hemisphere winter and early spring, contributing to the ozone loss there, is much less developed in the Northern ...
www.enviropedia.org.uk

Swimming Pool and Spa Sanitation
Chlorine and bromine can be purchased either as a chemical (pucks, tablets, or liquid) or as a ... that these are general precautions. You should consult the label of the product for clarification and additional information. In Case of Accidental Poisoning Seek medical attention or call a poison control ...
flasolar.com

13. Develop and serve databases
Following EASOE, NADIR also became the data centre for the Second European Stratospheric Experiment (SESAME) and for the Third European Stratospherie Experiment of Ozone (THESEO). Experimental data from about 60 monitoring ... the database. There is data here for a number of parameters like ozone, NO2, and chlorine and bromine compounds, which are relevant to the breakdown of the ozone layer. NILU has ...
nilu.no