World Ozone Day is celebrated annually on September 16 with an aim to make awareness about Ozone Layer depletion. The entire world takes part in this noble cause as an international day for the preservation of the Ozone layer. On this day, people from different walks of life are expected to join the Montreal protocol for participation in talks and seminars. The ozone layer, which protects the Earth from harmful ultraviolet rays, is basically a fragile shield of gas. These ultraviolet rays are not good for life, thus the Ozone layer helping preserve life on the Earth. The Ozone layer is depleting day by day due to human activities on the earth. The harmful waste and gases of the industries affecting the Ozone layer badly.
To celebrate World Ozone Day is an opportunity to invite global attention and action on this vital environmental issue. Celebrating World Ozone Day is basically an honest try to spread awareness among the people about the depletion of the Ozone Layer and search for possible solutions to preserve it. There are several programmes organized in the schools and other organizations. Students participate in debates and competitions based on the Ozone layer and its importance for the earth. Let them invite to participate in a different programme so that they can spread awareness on Ozone layer depletion and its effect on the earth.
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The Vienna Convention for the Protection of the Ozone Layer was adopted on March 22, 1985, and signed by the 28 countries. On 16 September 1987, an agreement was signed on substances that deplete the Ozone Layer and marks the International Day for the Preservation of the Ozone Layer. This agreement is known as the Montreal Protocol.
The United Nations General Assembly selected this day in its resolution 49/114 in 1987. Let us tell you that the Montreal Protocol was implemented on 1 January 1989. Basically, it is an international plan or agreement to protect the ozone layer by reducing the emission of greenhouse gases or the production of substances supposed to be responsible for the depletion of the ozone layer.
In 1994, the United Nations General Assembly declared 16 September as the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer. Later in the year 2012, the 20th anniversary of the Montreal protocol was celebrated. The Montreal Protocol and Vienna Convention became the first treaties in the United Nations’ history, to achieve universal ratification on 16th September 2009. On this day, Schools and Colleges organize events and essay writing competitions to spread awareness on the Ozone layer and its importance.
It is well established that the Ozone layer protects us from the harmful ultraviolet rays coming from the sun. In the year 1957, Professor Gordon Dobson of Oxford University discovered the existence of the Ozone layer. The Ozone layer is made up of three atoms of oxygen, which is a highly reactive gas and is represented by O3.
It is a natural process as well as man-made produce in the Earth’s upper atmosphere, i.e. stratosphere and lower atmosphere, i.e. troposphere. That is the Ozone layer is situated in Earth`s atmosphere (15-35km above Earth) in the lower portion of the stratosphere and has relatively high concentrations of ozone (O3). It is basically made of the interactions of solar ultraviolet (UV) radiation with molecular oxygen O2. It reduces the harmful Ultra Violet radiation reaching the Earth’s surface.
But ozone is considered a major air pollutant at the ground level. We all are aware that ozone protects us from harmful UV radiation but ozone is dangerous and causes pollution at the ground level. The ozone layer is getting depleted day by day due to human activities and it would be disastrous for the planet. It also causes acid rain and photochemical smog.
The Kigali Agreement was signed on October 15, 2016. The 28th meeting of the parties to the Montreal Protocol on Substances that Deplete the Ozone layer reached an agreement in Kigali, Rwanda to phase down hydrofluorocarbons (HFCs).
The main reason for the depletion of the Ozone layer is human activity mainly carbon emission and chemicals that contain chlorine or bromine. These chemicals are generally referred to as ODS that is Ozone – Depleting Substances. Since the early 1970’s scientists from all over the world observed a reduction in stratospheric ozone and it was found more prominent in Polar Regions. Do you know that one molecule of chlorine has the potential to break down thousands of ozone molecules? The main ozone-depleting substances include carbon tetrachloride, chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and methyl chloroform. Halons, which are known as brominated fluorocarbons, contribute highly to ozone depletion. The pollutants, which affects the Ozone layer have a lifetime of about 100 years.
The ozone layer protects from the harmful UV rays from the sun. Depletion of the Ozone layer may impact life on the Earth Planet badly. Ozone depletion also affects the environment adversely by changing the life cycles of plans and disrupting the food chain. Microscopic organisms such as plankton may not survive hence animals dependent on planktons will also not be able to survive. The depletion of the ozone layer may reflect in wind patterns, global warming, and other health issues to humans and other species on the earth planet.