World Meteorological Organisation (WMO) released 2nd Edition of WMO Ozone and UV Bulletin | Current Affairs | Vision IAS
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World Meteorological Organisation (WMO) released 2nd Edition of WMO Ozone and UV Bulletin

Posted 17 Sep 2024

2 min read

The release of the Bulletin coincides with World Ozone Day (16 September). 

  • World Ozone Day celebrates the implementation of the Montreal Protocol and the later amendment to the pact, known as the Kigali Agreement.
  • Theme for this year is Montreal Protocol: Advancing Climate Actions.

Key findings 

  • The ozone layer is recovering, with ozone-depleting substances (ODS) decreasing. 
    • Full recovery to 1980 levels is expected by 2066 over Antarctica; by 2045 over the Arctic and by 2040 for the rest of the world. 
  • The Kigali Amendment could potentially reduce global heating by 0.5°C by 2100.

About Ozone Layer

  • The ozone layer is found at a height of around 15 to 30 km (stratosphere) is produced naturally by the interaction of solar ultraviolet light with molecular oxygen (O2). 
  • Depletion: Ozone depletion occurs through chemical reactions involving ODS such as Chlorofluorocarbons (CFCs), Halons, etc. 
    • Ozone hole are mainly found in Antarctica, which is accelerated by stratospheric clouds that provide surfaces for these reactions.
    • Ozone hole refers to areas or regions harmed by damaging UV radiations.
  • Impacts of depletion: Human health (Increased skin cancer risk); Plant life (disrupted growth, development); Marine ecosystems (reduced phytoplankton survival), etc.

Initiatives Taken

  • Global
    • Vienna Convention (1885) and its Montreal Protocol (1987): The landmark multilateral environmental agreement that regulates the production and consumption of man-made chemicals referred to as ODS.
      •  India is a party (1992)
    • The Kigali Amendment: Decision made to phase down Hydrofluorocarbons (HFCs) in 2016, in Kigali, Rwanda.
  • India 
    • India launched the Cooling Action Plan in 2019 to address cooling demand, refrigerants, and energy efficiency.
    • India has phased out Chlorofluorocarbons, Carbon tetrachloride, Halons, Methyl Bromide and Methyl Chloroform

 

  • Tags :
  • Ozone
  • Montreal Protocol
  • Vienna Convention
  • Hydrofluorocarbons (HFCs)
  • Kigali Agreement
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