Several models exist that could guide the work within SAICM. For instance, the Montreal Protocol's Scientific Assessment Panel produces a report every four years, documenting the state of the ozone layer, based on contributions from an ad hoc steering group of international researchers. The Protocol's Technology and Economic Assessment Panel might be an even better model, because it provides a detailed analysis of issues connected with regulated substances and groups of substances, and may (if so mandated) suggest concrete and focused action. Another relevant example is the Climate and Clean Air Coalition.