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Ozone-Depleting Substances : New Study

Ozone-Depleting Substances: New Study

A new study released June 11, 2024, has reported the first significant decrease in atmospheric concentrations of potent ozone-depleting substances (ODS) known as hydrochlorofluorocarbons (HCFCs).

  • Ozone-Depleting Substances (ODS) are chemicals that cause the depletion of the stratospheric ozone layer.
  • This layer is crucial for protecting life on Earth by absorbing the majority of the sun’s harmful ultraviolet (UV) radiation.
  • The most common ODS include chlorofluorocarbons (CFCs), Halons, Carbon Tetrachloride and Methyl Chloroform.
    ODS are substances commonly used in refrigerators, air conditioners, fire extinguishers and aerosols.
  • The Montreal Protocol, signed in 1987, is a global agreement to protect the stratospheric ozone layer by eliminating the production and consumption of ODSs like chlorofluorocarbons (CFCs).
  • The worldwide production of CFCs has been prohibited since 2010.

Kigali Amendment to Montreal Protocol:

  • In 2016, Parties to the Montreal Protocol adopted the Kigali Amendment to phase down the production and consumption of hydrofluorocarbons (HFCs) worldwide.
  • HFCs are widely used alternatives to ODS such as hydrochlorofluorocarbons (HCFCs) and chlorofluorocarbons (CFCs), already controlled under the Protocol.