Question 2GS3GS3

According to a recent scientific assessment, the ozone hole, once considered to be the gravest danger to planetary life, is now expected to be repaired by 2066. In this context, discuss the various measures taken for ozone hole recovery.

Main Body

Ozone hole in the upper atmospheric layer is formed due to-thinning in the ozone layer, present about 18-80km above the earth surface in stratosphere. It was first noticed in 1980s over the antarctic region. => As rightly pointed in the above statement, 8 scientists have predicted that Antarctica ozone hole by 2068, Antarctica ozone hole by 2040, the hole will be repaired. => The main reason for formation of ozone hole was extensive release of Ozone depleting substances due to anthropogenic activities => There are over 100 such man-made chemicals responsible for ozone-layer depletion. => Drugs: Chlorofluoro carbons CFCs, Hydro-orochloro-carbon HCFC, HBFCs, halent, methyl bromide, carbon tetrachloride, methyl chloroform. => Major consequence of this was: heating up of earth surface, more UV-rays reaching earth as Ozone is a protective layer preventing UV-rays from reaching the earth surface.

— SAYALI BHIKA PAGAR · AIR 87

137 words1 paragraphs

Conclusion

=> People faced are more prone from skin burns, skin cancer, gene mutations, cataract, it hampers other organisms as well. => Various initiatives were taken to tackle the issue: I] Vienna Convention 1985: This was for protection of Ozone layer, by promoting internal cooperation & 2nd each on ozone depletion. It studied the causes of ozone depletion, shared information & develop a strategy to reduce the depletion. II] The Montreal Protocol on substances that Deplete Ozone layer, 1987: Legally binding treaty that aimed to phase out the production & consumption of nearly 100 man-made chemicals released to as ozone depleting substances ODS Ozone Fund was set up in 1990 to support developing countries in their efforts to phase out the use of ODS. III] Kigali Amendment to the Montreal Protocol 2016: It aims at phase down of Hydrofluoro carbon HFC by cutting/their production consumption. => They have zero impact on ozone layer but are 100 times more potent than carbon-dioxide as green-house gas. => HFCs are usually used as replacement to CFCs, HCFCs. => With Kigali Amendment to Montreal Protocol, global warming also will be targeted. => The targets are different for different countries & assessed on their status as developed, developing or 3rd world country. => India after under 3rd world country, we are supposed to start HFC-reduction from 2028 & achieve 15% of 2010 level by 2014-25 by 2047. => Arresting ozone depletion is crucial not only to protect the environment but also to protect from its biodiversity.

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SAYALI BHIKA PAGAR

AIR 872023

Subject & Paper

GS3GS3

Topic

Science and Technology

Climate Change / Environmental Issues

Ozone Depletion

Writing Stats

387

Total words

Paragraphs

formal

Tone

Linked PYQ

6. अधोलिखिताः सर्वे प्रश्नाः समाधेयाः — Answer all of the following : (a) श्रीमद्भगवद्गीतायां प्रतिपादितम् आत्मस्वरूपं निरूप्यताम्। 20 Explain the characteristics of Ātman (आत्मन्) according to 'श्रीमद्भगवद्गीता'. (b) शाङ्करवेदान्तानुसारं ब्रह्मस्वरूपं प्रतिपाद्यताम्। 15 Explain the concept of Brahman (ब्रह्म) according to Śaṅkara-Vedānta. (c) सांख्यमतानुसारं प्रकृतेः स्वरूपं विवेचयत। 15 Explain the characteristics of 'प्रकृति' according to Sāṁkhya Philosophy.

50M2022समाधेयाः