ozone depletion

(redirected from Depletion of the ozone layer)

ozone depletion

The ongoing reduction of ozone in the stratosphere. Ozone (O3) is present in 1 ppm in the upper stratosphere, and it absorbs virtually all of the UV radiation from the sun; increased rates of sun-induced malignancies (e.g., melanomas) have been attributed to the destruction of the ozone layer. Ozone depletion is caused by the release of chloride ions from CFCs (chlorofluorocarbons) after release from air conditioners, spray cans, and manufacturing plants that produce electronics and plastics. CFCs degrade in the atmosphere, release chlorine and cause ozone destruction, remain free, or react with ozone to form ClO (chlorine monoxide); O3 is being depleted at a rate of 4–5% per decade.
References in periodicals archive ?
Apart from contributing to the depletion of the ozone layer, NAFDAC further revealed, methyl bromide is an extremely toxic vapour which is readily absorbed through the lungs in humans by inhalation.
He expressed deep satisfaction towards member states' efforts in successfully halting depletion of the ozone layer, announcements of gradual recovery and a full recovery by 2060.
However, the current ozone hole area is still large compared to the 1980s, when the depletion of the ozone layer above Antarctica was first detected.
Oman's ratification stems from its belief in supporting efforts of the international community to address the challenges of various environmental problems, including depletion of the ozone layer and confronting challenges facing environmental, climatic and ecological systems.
The Sultanate's ratification to the conventions stems from its belief in supporting efforts of the international community to address the challenges of various environmental problems, including the depletion of the ozone layer and confronting challenges facing environmental, climatic and ecological systems.
News Report The World Ozone Day will be observed across the country today (Sunday) as elsewhere in the world for creating awareness about depletion of the ozone layer and its adverse effects on this planet's environment.
Terminologies like global warming explaining the long-term effect of the depletion of the Ozone Layer are ascribed to the man from Kochia, who severally posited that he had undergone the university of sorrows, faculty of weeping in the department of torture.
The reasons why such a fatal extinction awaits our way are namely; Deforestation, use of chlorofluorocarbons, excessive release of carbon dioxide, wild fires, industrialization, combustion of methane, volcanic eruptions and depletion of the ozone layer.
The nations however made an agreement which tried to limit the use of substances which would result in the depletion of the ozone layer. This agreement was known as The Montreal Protocol.
The programme includes visits company engineers make to schools to provide environmental lectures in Arabic and English, during which they focus on the most important environmental topics being discussed at the global level including, but not limited to, the phenomenon of global warming, depletion of the ozone layer and acid rain.
These activities aim to raise awareness and create political momentum on concerns such as the depletion of the ozone layer, toxic chemicals and climate change.
The Montreal Protocol was established in 1987 to address the depletion of the ozone layer by harmful substances.