A&O SCI 1 Lecture Notes - Lecture 17: Air Pollution, Intended Nationally Determined Contributions, Chicago Climate Exchange
2 Aug 2018
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Document Summary
Lec 17 - policy responses : the montreal protocol. Montreal protocol on substances that deplete the ozone layer : one of the first international agreements to combat a global environmental problem. Brought on by discovery of the ozone hole over antarctica in 1984 (confirmation that cfcs were destroying the ozone layer) Went into effect in 1989, not long after discovery of the ozone hole has since undergone a few revisions: Gradually phased out the production of zone-destroying cfcs (ended in u. s. & Europe in 1996, and in less-developed countries in 2010) Countries that chose not to participate would have been subject to trade sanctions by the countries that did. As of today, all 197 nation states recognized by the un have signed onto the. Protocol = only universally ratified treaties in the world. Concentrations of effective equivalent stratospheric chlorine and hcl concentrations have declined demonstrates that the protocol has been successful in lowering concentrations of cfcs in the atmosphere.
