ozone depletion

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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 ?
Looking back over the past 30 years, we are at a critical juncture in the implementation of a phase out programme for the Ozone Depleting Substances, he underlined.
Earlier this year, the Alliance petitioned the US EPA to expand its regulations governing emissions of ozone depleting substances to also cover HFCs.
The main objective of the Multilateral Fund for the Implementation of the Montreal Protocol is to assist developing country parties to the Montreal Protocol whose annual per capita consumption and production of ozone depleting substances (ODS) is less than 0.
The country's total consumption of ozone depleting substances had grown 87% to 1,417MT in 2009, 59% to 757.
The minister warmly welcomed the Armed Forces officers and local and international guests to this important seminar which deals with the Phase out and Impacts of Ozone Depleting Substances (ODSs) on Defence Applications.
3) These difficulties, primarily relating to the thriving black market in ozone depleting substances and the uncertainty over developing country phaseout of these substances, are both in some ways side effects of precisely the things that made the Montreal Protocol successful.
needs to be looking toward the future and working to rapidly phase out all ozone depleting substances without compromising the goals of other treaties.
And, this agreement will have substantial climate change benefits because it will reduce greenhouse gas emissions associated with the phased out substances and spur development of new alternatives to these ozone depleting substances that have low or no greenhouse gas emissions.
The Division said under Institutional Strengthening of Montreal Protocol Project different steps have been taken to control Ozone Depleting Substances (ODS) in the country.
KUWAIT, March 17 (KUNA) -- The Environment Public Authority (EPA) is gearing up for various meetings with UN organizations to discuss developing the unified system on ozone depleting substances in accordance with the Montreal Protocol.
Referring to COP 16 at Cancun, Mexico, The Minister Environment said that scientists and environmentalists had laid special emphasis for promoting activities to minimize Ozone depleting substances by establishing multilateral fund.
The MoE organised an awareness seminar for defence forces on "Phase Out and Impact of Ozone Depleting Substances and Energy Efficiency in Defence Applications".