The following are my comments posted on blogger Ossegredos de Manuela's Oct 11, 2010 article "Consciência Ecológica"
>> .... mudanças climáticas ( medidas para diminuir a emissão de poluentes e impedir a destruição da camada de ozônio )
I hope you don't mind my comments here:
Back in 1987 when the Montreal Protocol was ready for international signatures, scientists were mainly concerned with the harmful effect of UV radiations on human and other life forms on the planet. The control and banning of ozone depletion substances (ODS) had little to do with Global Warming then (now called Climate Change).
Climate Change measures agreed at the 1992 Rio Convention and subsequent Conferences of the Parties (COP) annual meetings will only protect the ozone layer from the harmful effect of some but not all ODS. The Montreal Protocol is still needed to manage the risk posed by those ODS that are not Green House Gases (GHGs).
* Wikipedia: Climate Change
* Wikipedia: Montreal Protocol