The ozone layer in the stratosphere absorbs some of the sun's radiation, preventing it from reaching the planet's surface. Every year September 16th is designated as International Day for the Preservation of the Ozone Layer. On this day 32 years ago, 45 countries signed a treaty to phase out the use of substances that harm or deplete the ozone layer, but the agreement was later ratified by all 197 countries of the world. The depletion of the ozone layer has a negative impact on our environment, the most visible of which is global warming. In this article, we will discuss India and Protection of Ozone Layer which will be helpful for UPSC exam preparation.

India and Protection of Ozone Layer

• India joined the Vienna Convention for the Protection of the Ozone Layer on June 19, 1991, and the Montreal Protocol on substances that deplete the ozone layer on September 17, 1992, respectively.
• As a result, it ratified the Beijing, Montreal, and Copenhagen Amendments in 2003.
• India is the world's largest producer of carbon tetrachloride (CTC), methyl chloroform, methyl bromide, halon-1211, HCFC-22, halon-1301, and CFC-11, CFC-12, and CFC-113.
• These ozone-depleting substances (ODS) are utilized in foams, aerosol fumigation, electronics, firefighting, refrigeration, and air conditioning.
• In order to ensure the phase-out of ODS in accordance with the national industrial development strategy, without placing an undue burden on consumers or the industry, and for accessing the Protocol's Financial Mechanism in accordance with the requirements stipulated in the Montreal Protocol, a detailed India Country Programme for phase-out of ODS was prepared in 1993.
• In order to support the implementation of the India Country Programme for phasing out ODS (ozone depleting substances) production by 2010, the Ministry of Environment and Forests formed an Ozone Cell and a steering group on the Montreal Protocol.
• The Indian government has granted complete exemption from payment of Customs and Central Excise Duties on the import of goods specifically made for non-ODS technology in order to fulfill the Protocol's objectives.
• India has also helped South and South East Asia, as well as the Pacific, adopt the Montreal Protocol.

Initiatives to Tackle Ozone Depletion

Vienna Convention

• The Vienna Convention for the Protection of the Ozone Layer, signed in 1985, was an international agreement in which United Nations members recognised the critical importance of preventing stratospheric ozone layer damage.
• On March 18, 1991, India became a signatory to the Vienna Convention for the Protection of the Ozone Layer.

Montreal Protocol

• The Montreal Protocol on Substances that Deplete the Ozone Layer was negotiated in 1987, and subsequent amendments were negotiated to control the consumption and production of anthropogenic (ODSs) and some hydrofluorocarbons (HFCs).
• On June 19, 1992, India became a party to the Montreal Protocol on substances that deplete the ozone layer.

Kigali Amendment

• The adoption of the 2016 Kigali Amendment to the Montreal Protocol will phase down the production and consumption of some HFCs, avoiding much of the projected global increase and associated climate change.

EU Regulation

• EU legislation on ozone-depleting substances is among the strictest and most advanced in the world.
• The EU has not only implemented the Montreal Protocol through a series of regulations, but has frequently phased out dangerous substances faster than required.
• The EU Ozone Regulation establishes licencing requirements for all ozone-depleting substance exports and imports, and it regulates and monitors not only substances covered by the Montreal Protocol (over 90 chemicals), but also some that are not (five new substances).

Efforts to Reduce Ground-Level Ozone

• Surface ozone levels in India are higher than the recommended 8-hour average of 100 μg/m3 for air quality monitoring at various stations.
• Exposure to high levels of surface ozone causes a variety of health issues.
• The government has taken a number of steps to reduce ozone pollution, including:
  • Moving from BS-IV to BS-VI vehicles.
  • Burning of garbage is prohibited.
  • Graded Response Action Plan (GRAP).
  • Launch of the National Clean Air Programme (NCAP).
  • Establishment of a monitoring network for assessing ambient air quality at 779 locations, covering 339 cities in 29 states and six Union territories.

Conclusion

In the 1970s, scientists discovered that the ozone layer was depleting. Temperature, weather, latitude, and altitude naturally change ozone concentrations in the atmosphere, and compounds released by natural occurrences such as volcanic eruptions may also have an effect on ozone levels. These natural events, however, could not account for the reported levels of depletion, and scientific evidence demonstrated that specific man-made substances were to blame. In the 1970s, these ozone-depleting compounds were first used in a wide range of industrial and consumer applications, including refrigerators, air conditioners, and fire extinguishers. In the late 1980s, world governments agreed under the Montreal Protocol to protect the Earth's ozone layer by phase-out of ozone-depleting compounds released by human activities.

FAQs

Question. What is the ozone layer, and why is it important for life on Earth?

Question. What are the main causes of ozone layer depletion?

Question. What steps has India taken to protect the ozone layer?

Question. What is the Montreal Protocol, and how does it relate to India’s efforts?

Question. What has been the impact of India’s efforts on the ozone layer?

MCQs

1. What chemical is primarily responsible for the depletion of the ozone layer?

A) Nitrous oxide

B) Chlorofluorocarbons (CFCs)

C) Methane

D) Carbon dioxide

2. Which international treaty aims to protect the ozone layer?

A) Kyoto Protocol

B) Paris Agreement

C) Montreal Protocol

D) Rio Declaration

3. Which of the following ozone-depleting substances is commonly used in refrigeration and air conditioning?

A) Hydrofluorocarbons (HFCs)

B) Chlorofluorocarbons (CFCs)

C) Methane

D) Nitrogen oxides

4. When did India ratify the Montreal Protocol?

A) 1990

B) 1987

C) 1992

D) 2000

5. What is the role of the ozone layer in protecting life on Earth?

A) It regulates global temperature.

B) It protects us from harmful ultraviolet radiation.

C) It traps greenhouse gases.

D) It prevents global warming.

GS Mains Questions and Model Answers

Q1: Discuss the significance of the Montreal Protocol in the protection of the ozone layer.

Answer: The Montreal Protocol is a landmark international treaty adopted in 1987 with the goal of phasing out substances that deplete the ozone layer. It has been instrumental in reducing the global use of ozone-depleting substances (ODS), such as chlorofluorocarbons (CFCs), halons, and other chemicals containing chlorine and bromine. The protocol has been widely adopted, with over 190 countries, including India, signing it. It has led to a global reduction in the production and consumption of ODS, which has resulted in a gradual recovery of the ozone layer. The success of the Montreal Protocol is attributed to its stringent measures, flexibility in adjusting targets, and financial support to developing countries to help them transition to alternatives. The treaty's impact has been significant in protecting human health, preserving biodiversity, and mitigating the effects of UV radiation. India's role in the Montreal Protocol has been commendable, with the country taking proactive measures to phase out ODS and adopt safer alternatives in various sectors, including refrigeration and air conditioning. This global cooperation and commitment to environmental protection have made the Montreal Protocol a model for addressing other global environmental challenges.

Q2: What are the environmental and health impacts of ozone layer depletion, and how can these be mitigated?

Answer: Ozone layer depletion allows increased levels of ultraviolet (UV) radiation from the Sun to reach the Earth's surface, leading to significant environmental and health impacts. The health consequences include an increased incidence of skin cancer, cataracts, and weakened immune systems. UV radiation also affects ecosystems, causing damage to aquatic life, especially phytoplankton, which are vital to marine food chains. Additionally, the growth of plants and crops can be adversely impacted, reducing agricultural productivity. Mitigation of ozone depletion can be achieved through international cooperation, particularly under treaties like the Montreal Protocol, which works to phase out the use of ozone-depleting substances (ODS). Governments and industries must continue to adopt safer, environmentally friendly alternatives to chemicals like chlorofluorocarbons (CFCs) and halons. Additionally, stricter regulations and enhanced monitoring of ozone-depleting substances can help curb emissions. Public awareness campaigns and technological advancements in sustainable refrigeration and air conditioning systems are essential in reducing dependence on harmful chemicals.

Q3: Analyze India’s role and achievements in the protection of the ozone layer.

Answer: India has been an active participant in global efforts to protect the ozone layer, particularly through its involvement in the Montreal Protocol. Since ratifying the protocol in 1992, India has made significant strides in phasing out ozone-depleting substances (ODS), such as chlorofluorocarbons (CFCs), halons, and other harmful chemicals. The country has implemented national policies to control the production and consumption of these substances and has promoted the use of alternative, eco-friendly chemicals in sectors like refrigeration and air conditioning. India has also received financial assistance from the Multilateral Fund of the Montreal Protocol, which has helped the country transition to more sustainable alternatives. The Indian government has encouraged the adoption of alternative technologies and increased domestic production of non-ODS substances. Moreover, India’s ozone-layer protection efforts are reflected in the gradual recovery of the ozone layer over its territory, which is a testament to the effectiveness of these measures. The country’s proactive stance in addressing ozone depletion has also contributed to global success in reducing the emissions of ODS. India’s commitment to international environmental agreements and its domestic policies play a crucial role in ensuring the protection of the ozone layer for future generations.

Previous Year Questions on India and Protection of Ozone Layer

1. UPSC CSE 2021

Question: Discuss the significance of India’s role in the global efforts to protect the ozone layer. What steps has India taken to phase out ozone-depleting substances?

Answer: India has played a significant role in the global efforts to protect the ozone layer, particularly through its active participation in the Montreal Protocol. As a signatory since 1992, India has taken several steps to phase out the use of ozone-depleting substances (ODS) in line with international commitments. India has implemented national policies that regulate the production and consumption of chemicals like chlorofluorocarbons (CFCs) and halons. These measures include the promotion of alternative technologies and chemicals that do not harm the ozone layer. The Indian government has also received financial support from the Multilateral Fund of the Montreal Protocol to assist in this transition. Furthermore, India has contributed to global awareness efforts about the dangers of ozone depletion and the importance of maintaining a healthy ozone layer. The country’s commitment to protecting the ozone layer is evident in the gradual reduction of ODS emissions and its contribution to the global recovery of the ozone layer.

2. UPSC CSE 2019

Question: Analyze the environmental and health consequences of ozone layer depletion and evaluate India’s contributions to mitigating its effects.

Answer: Ozone layer depletion allows harmful ultraviolet (UV) radiation to reach the Earth's surface, leading to serious environmental and health issues. UV radiation causes skin cancer, cataracts, and weakens the immune system in humans. It also has adverse effects on ecosystems, damaging aquatic life, especially phytoplankton, and reducing agricultural productivity. The impact of UV radiation on plant growth can further disrupt food chains. India, as a signatory to the Montreal Protocol, has made significant contributions to mitigating these effects by phasing out the use of ozone-depleting substances (ODS) and adopting eco-friendly alternatives. Through national policies, India has regulated the use of CFCs and halons in refrigeration and air conditioning industries. The country has also promoted awareness and technological solutions to reduce the reliance on harmful chemicals. India's commitment to these international efforts has contributed to the gradual recovery of the ozone layer, benefiting both the environment and public health.