You are here: Home » Current Affairs » News » Environment
Business Standard

World Ozone Day 2020: Know about Vienna Convention and importance of ozone

This year the slogan for World Ozone Day is 'Ozone For Life'

Topics
World Ozone Day | Ozone | Ozone impact

BS Web Team  |  New Delhi 

World Ozone Day
World Ozone Day poster by Shutterstock

Day is observed on September 16 every year to spread awareness among people about the depletion of Layer. This year marks 35 years of the Vienna Convention. On this day, people from all over the world hold talks and seminars on the layer. Educators teach students about the benefits of the and special events and activities are organised to spread awareness. This year the slogan for is 'Ozone For Life'.

"On Ozone Day we celebrate 35 years of the Vienna Convention to Protect the Ozone Layer and its Montreal Protocol, which united the world to cut out gases creating a hole in the ozone layer. We need this same sense of purpose and collaboration to address all environmental threats," Inger Anderson, Executive Director, UNEP (United Nations Environment Programme) said in a video message ahead of

What is Ozone layer

The Ozone layer protects the planet from Ultraviolet (UV) rays of the sun. Ozone is made up of three atoms of oxygen. It is highly reactive gas and is represented by O3. It occurs naturally as well as a man-made product in the Earth's upper atmosphere i.e. stratosphere and lower atmosphere i.e. troposphere. The Ozone layer is present in Earth’s atmosphere (15-35km above Earth) in the lower portion of the stratosphere and has relatively high concentrations of ozone (O3). Naturally, it is formed through the interactions of solar UV radiation with molecular oxygen O2. It reduces the harmful UV radiation reaching the Earth's surface.

The main cause of ozone depletion and the is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons). Since the early 1970's, scientists observed reduction in stratospheric ozone and it was found more prominent in Polar Regions. ODS substances have a lifetime of about 100 years.

Ozone layer

Ozone layer

Vienna Convention for the Protection of the Ozone Layer

The scientific confirmation of the depletion of the ozone layer prompted the international community to establish a mechanism for cooperation to take action to protect the ozone layer. This was formalized in the Vienna Convention for the Protection of the Ozone Layer, which was adopted and signed by 28 countries, on 22 March 1985. In September 1987, this led to the drafting of The Montreal Protocol on Substances that Deplete the Ozone Layer.

What is Montreal Protocol

The Montreal Protocol, signed on September 16, 1987, is an international treaty planned to protect ozone layer by reducing the production of substances that are responsible for ozone layer depletion. The Montreal Protocol phases down the consumption and production of the different ozone depleting substances (ODS) in a step-wise manner, with different timetables for developed and developing countries. Under this treaty, all parties have specific responsibilities related to the phase out of the different groups of ODS, control of ODS trade, annual reporting of data, national licensing systems to control ODS imports and exports, and other matters.

Dear Reader,


Business Standard has always strived hard to provide up-to-date information and commentary on developments that are of interest to you and have wider political and economic implications for the country and the world. Your encouragement and constant feedback on how to improve our offering have only made our resolve and commitment to these ideals stronger. Even during these difficult times arising out of Covid-19, we continue to remain committed to keeping you informed and updated with credible news, authoritative views and incisive commentary on topical issues of relevance.
We, however, have a request.

As we battle the economic impact of the pandemic, we need your support even more, so that we can continue to offer you more quality content. Our subscription model has seen an encouraging response from many of you, who have subscribed to our online content. More subscription to our online content can only help us achieve the goals of offering you even better and more relevant content. We believe in free, fair and credible journalism. Your support through more subscriptions can help us practise the journalism to which we are committed.

Support quality journalism and subscribe to Business Standard.

Digital Editor

First Published: Wed, September 16 2020. 10:12 IST
RECOMMENDED FOR YOU
.