CFC concentration in the atmosphere has only gone down since the Montreal treaty so it's still a success so far. (edit: I should have said "since 2000", the tr

CFC concentration in the atmosphere has only gone down since the Montreal treaty so it's still a success so far. (edit: I should have said "since 2000", the treaty was a phase-out to zero emissions by 1996) What happened was that the rate of decline of CFC concentration slowed down[1] after 2012. This was an indication that there were new emitters. China then found the emitters and shut them down. [2] [1] https://www.nature.com/articles/s41586-018-0106-2.epdf https://www.nature.com/articles/s41586-018-0106-2.epdf [2] https://nationalpost.com/news/world/china-makes-arrests-shuts-down-rogue-chemical-factories-that-spewed-banned-ozone-depleting-gas https://nationalpost.com/news/world/china-makes-arrests-shut...