But the CFCs start eating away at the ozone layer once they get blown into the stratosphere. Ozone molecules, which are simply made of three joined oxygen atoms, are always being destroyed and reformed naturally. The ozone layer, which only makes up 0. This is inaccurate. Ozone layer damage is more like a really thin patch than a hole. The ozone layer is thinnest near the pole s.
In the s, people all over the world started realizing that the ozone layer was getting thinner and that this was a bad thing. Many government s and businesses agreed that some chemicals, like aerosol can s, should be outlaw ed. There are fewer aerosol cans produced today.
The ozone layer has slowly recovered as people, businesses, and governments work to control such pollution. Million to One Compared to other gases in the atmosphere, ozone is pretty rare. According to NOAA, there are only about three molecules of ozone for every ten million molecules of air.
When released through a small opening, the liquid becomes a spray or foam. Some CFCs have destructive effects on the ozone layer. Gas molecules are in constant, random motion. Ultraviolet is often shortened to UV. The audio, illustrations, photos, and videos are credited beneath the media asset, except for promotional images, which generally link to another page that contains the media credit.
The Rights Holder for media is the person or group credited. Can policymakers protect the ozone layer while also helping prevent climate change? Climate change mitigation data centre. Ozone depletion blue colours in the South hemisphere in Source: National Aeronautics and Space Administration NASA - Goddard Space Flight Center International action has been effective in protecting the ozone layer To halt the depletion of the ozone layer, countries around the world agreed to stop using ozone-depleting substances.
Figure 1: Consumption of controlled ozone-depleting substances , governments made an additional commitment, agreeing to freeze production of HCFCs in developing countries by and to bring forward the final phase-out date of these chemicals to Protecting the ozone layer also protects the climate The reduction in ozone-depleting substances has also had a beneficial side-effect.
A number of accompanying bans. Source: European Commission. Considering overall emissions Because F-gases contribute to climate change, businesses are now looking to replace them with other substances. The reported information is summarised in the following annual reports by the EEA: Report on fluorinated gases Briefing on ozone-depleting substances The EEA also publishes two related indicators: Indicator on production, sales and emissions of flourinated greenhouse gases Indicator on production and consumption of ozone depleting substances.
Related content Sort by: Publishing date Title. News and articles News Europe continues to phase out ozone layer-damaging chemicals Europe continues to make progress in phasing out chemicals which damage the ozone layer according to a new report from the European Environment Agency EEA.
The report considers the use of more than chemicals controlled by the Montreal Protocol and EU legislation. Publication Fluorinated greenhouse gases Aggregated data reported by companies on the production, import and export of fluorinated greenhouse gases in the European Union. Publication Ozone-depleting substances Aggregated data reported by companies on the import, export, production, destruction and feedstock and process agent use of ozone-depleting substances in the European Union.
Topics Topics: Climate change mitigation. Tags Filed under: f-gases ozone depleting substances climate change mitigation. Filed under: f-gases , ozone depleting substances , climate change mitigation.
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Biodiversity Information System for Europe. Climate Adaptation Platform. Copernicus In Situ. Copernicus in situ component. Copernicus Land. Scientific Assessment of Ozone Depletion: The Earth's atmosphere is composed of several layers. The lowest layer, the troposphere troposphere The region of the atmosphere closest to the Earth.
The troposphere extends from the surface up to about 10 km in altitude, although this height varies with latitude. Almost all weather takes place in the troposphere. Everest, the highest mountain on Earth, is only 8. Temperatures decrease with altitude in the troposphere. As warm air rises, it cools, falling back to Earth.
This process, known as convection, means there are huge air movements that mix the troposphere very efficiently. Virtually all human activities occur in the troposphere. Everest, the tallest mountain on the planet, is only about 5. The next layer, the stratosphere stratosphere The region of the atmosphere above the troposphere. The stratosphere extends from about 10km to about 50km in altitude. Commercial airlines fly in the lower stratosphere. The stratosphere gets warmer at higher altitudes.
In fact, this warming is caused by ozone absorbing ultraviolet radiation. Warm air remains in the upper stratosphere, and cool air remains lower, so there is much less vertical mixing in this region than in the troposphere.
Most commercial airplanes fly in the lower part of the stratosphere. Health and Environmental Effects of Ozone Depletion. Ozone Layer Research and Technical Resources. Information for students about the Ozone Layer. Addressing Ozone Layer Depletion.
Adapting to a Changed Ozone Layer. Phasing Out Ozone-Depleting Substances. Managing Refrigerant Emissions. Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles 15 to 30 km above the Earth's surface see the figure below. Ozone is a molecule that contains three oxygen atoms.
However, until the HS is revised in , all HFCs are contained in a single HS code which does not allow differentiation of the individual chemicals or of mixtures.
This document outlines a proactive interim approach, recommended by the World Customs Organization WCO , to establish additional digits in the existing national HS codes to identify specific HFCs, according to www. The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation.
It contains high concentrations of ozone O3 in relation to other parts of the atmosphere. The ozone layer absorbs 97 to 99 percent of the Sun's medium-frequency ultraviolet light, which otherwise would potentially damage exposed life forms near the surface. Thinning of the ozone layer means increased skin related diseases.
In recent decades, because of the release of large quantities of man-made organohalogencompounds, especially chlorofluorocarbons CFCs and bromofluorocarbons, the ozone layer is depleting. If earth loses the protection of ozone layer, then life on the planet will be at great risk. Nature is undoubtedly God's greatest gift to the mankind.
The air that we breathe, the food we eat and water we drink, all these come from nature. Even when we want to escape from humdrum of daily life, we like going to mountains, forests or in general closer to nature. The very fact that we using the expression 'closer to nature' makes it clear that we have over the years come far from it.
Technology has definitely changed the way we lead our lives compared to our ancestors, but it cannot be denied that this very technology has brought us away from nature, the place where we truly belong.
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