World Ozone Day

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September 16 is observed as International Day for the Preservation of the Ozone Layer. The ozone layer or ozone shield is a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet (UV) radiation. It contains high concentrations of ozone in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.

This layer in the stratosphere contains relatively high concentration of ozone. The earth’s atmosphere divided into several layers has each layer playing a role. The first region extends to about 10km up from the earth’s surface and is called the troposphere. Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons or gases formerly found in aerosol spray cans and refrigerants get released into the atmosphere. CFCs and halons cause chemical reactions breaking down ozone molecules to reduce ozone’s ultraviolet radiation-absorbing capacity.

It is very essential to keep a control on fossil fuels that cause huge amounts of damage to the ozone layer which is depleting quickly. The ozone layer gets depleted by chemicals and air pollution caused by human activities. This is why September 16th is marked out since 1987 after the Montreal Protocol as World Ozone Day. A number of special events such as talks and seminars are held on this day. World Ozone Day is officially been celebrated since 1994 after being established by United Nations General Assembly. The day is mainly intended to spread awareness of the depletion of the Ozone Layer and search for solutions to preserve it.

People from all over the world are made aware of the need to protect the ozone layer. Talks and seminars are held widely by academics and concerned agencies. Celebrated all around the world schools and colleges have educators setting aside the day to instruct students about the Ozone layer. Many educational institutions organize special events and activities to raise awareness on the need to conserve the ozone layer.

September 16 is the designated day as the International Day for the Preservation of the Ozone Layer. This designation had been made on December 19, 1995, in commemoration of the date, in 1987, on which nations signed the Montreal Protocol on Substances that Deplete the Ozone Layer. The closure of the hole in the ozone layer was observed 30 years after the protocol was signed. Due to the nature of the gases responsible for ozone depletion their chemical effects are expected to continue for between 50 to 100 years.

The ozone layer, a fragile shield of gas, protects the Earth from the harmful portion of the rays of the sun, thus helping preserve life on the planet. The phase out of controlled uses of ozone depleting substances and the related reductions have not only helped protect the ozone layer for this and future generations, but have also contributed significantly to global efforts to address climate change. Also it has protected human health and ecosystems by limiting the harmful ultraviolet radiation from reaching the earth.

This year marks the 30th anniversary of the Montreal Protocol. As part of the anniversary celebrations, the Ozone Secretariat has launched a communication campaign ahead of World Ozone Day. The #OzoneHeroes campaign launched on 14 September will seek to celebrate the major accomplishments of the Montreal Protocol in protecting the ozone layer and the climate, to increase public recognition of the success and impact of the Protocol.

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