1987 montreal protocol on substances that deplete the 17 638

Montreal Protocol

By manufigueiredo

  • Ozone-depleting properties of CFCs recognized

    Ozone-depleting properties of CFCs recognized
    In the 1970s, CFCs ozone-depleting particles were discovered. USA and Sweden banned them from non-essential aerosol uses in 1974.

  • Ozone hole discovered

    Ozone hole discovered
    British Antarctic Survey reports the ozone hole. 20 nations including major CFC producers signed the "Vienna Convention" which set international regulations on how to deal with ozone-depleting substances.

  • Montreal Protocol agreed on

    Montreal Protocol agreed on
    Organised by the United Nations, with over 30 countries agreeing to cut their CFC emissions by half by 2000.

  • Montreal Protocol put into force

    Montreal Protocol put into force

  • London Amendment

    London Amendment
    Strengthening of the protocol and alterations. Industrialised countries would eliminate CFC production by 2000 and developing countries by 2010.

  • Acceleration of phasing out ODS

    Acceleration of phasing out ODS
    Speed up the phasing out of ozone-depleting substances.

  • Nobel Prize

    Nobel Prize
    Nobel Prize on chemistry awarded to Molina, Sherwood Rowland and Crutzen for their work on solving ozone-depletion issue.

  • Antarctic ozone hole largest ever measured

    Antarctic ozone hole largest ever measured
    NASA and NOAAA record this.

  • 25th anniversary of signing of protocol

    25th anniversary of signing of protocol