'Perhaps the single most successful international environmental agreement to date has been the Montreal Protocol' Kofi Annan

Using atmospheric observations, we have monitored international progress on phasing out ozone depleting substances such as CFCs for over 30 years.

The Medusa Gas Chromatography Mass Spectrometry instrument, co-developed by the ACRG, provides high-precision measurements of more than 40 ozone depleting substances and other related gases. Using models, we have used these data to track how emissions of these substances continue to change in response to the Montreal Protocol.

Follow the links to the right for further information on individual projects involving the ACRG.