Earlier this year, however, a study reported that ozone concentrations in the lower level of the stratosphere had been falling since the late s — even though the Montreal Protocola global treaty to phase out ozone-depleting chemicals, had been in effect since
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The ozone layer is an important part of the global atmosphere and climate system. It limits the amount of ultraviolet UV radiation from the sun to levels necessary for life on Earth. A depleted ozone layer may likely cause serious consequences including higher rates of sunburn, skin cancer, eye damage and other diseases, as well as reducing plant growth.
Manufactured chemical compounds are the main cause of ozone layer depletion. These are compounds such as chlorofluorocarbons CFCs and halons, among others.
In the past, these compounds were commonly used in refrigerators, air conditionners and fire-retardant chemicals.
However, the effects of this natural disaster have diminished, and levels have returned to values closer to the long-term downward trend. High levels of UV radiation are known to slow plant growth.
They may also lead to skin cancers, cataracts and immunosuppressive diseases in humans and other animals. This varies according to the season. The production of ozone-depleting substances ODS in Canada has dropped from a high of Despite this progress, there are still concerns.
First, scientists cannot be certain that, even with current elimination targets of ODSsthe ozone layer will return to its previous thickness. The concentration of known ODSs in the stratosphere is declining, although there may be other substances that are contributing to ozone depletion.
Second, developing countries now represent the biggest threat to the recovery of the ozone layer, as their production and use of CFCs has grown in recent years. The report of the Auditor General of Canada indicates that current stocks of ODSsthose in existing equipment and quantities stored for future use, are at risk of being released to the atmosphere.
The problem of ozone layer depletion became prominent in the s. Scientific measurements began to show significant global decreases in ozone.
Some of the general results follow. For Australia, ozone losses during the s ranged from 0. The seriousness of the problem has led to global agreement to reduce and control the production of ODSs.
The decisions taken were the following: Freeze consumption of CFC at levels by We are accustomed to thinking of learning as good in and of itself. But as environmental educator David Orr reminds us, our education up till now has in some ways created a monster.
OZONE - BREATH OF LIFE return to list. by Robert Willner, M.D. OZONE (03) "Breath of God" (Ancient Hebrew) NOTE: THE USE OF OZONE THERAPY IN THE TREATMENT OF CANCER OR ANY OTHER DISEASE IS UNPROVEN AND NOT RECOGNIZED BY THE FDA OR THE MEDICAL PROFESSION IN THE UNITED STATES.
Open Access Initiative is committed to make genuine and reliable contributions to the scientific community without restricting the access of published content. "Ozone depletion is a well-known phenomenon and, thanks to the success of the Montreal Protocol, is widely perceived as a problem solved," says University of East Anglia's David Oram.
But an international team of researchers, led by Oram, has now found an unexpected, growing danger to the ozone layer from substances not regulated by the . 'Ozone depletion is a well-known phenomenon and, thanks to the success of the Montreal Protocol, is widely perceived as a problem solved,' say some.
But an international team of researchers, has. So how someone can study the ozone layer depletion? Suggest me the methods and techniques are used for the study of ozone layer depletion.
Then you will understand better the problem and will.