The Montreal Protocol requires a regular review of effectiveness of its “control measures,” or compliance mechanisms. Article 6 of the Protocol provides that:
Beginning in 1990, and at least every four years thereafter, the Parties shall assess the control measures provided for in Article 2 and Articles 2A to 2I, on the basis of available scientific, environmental, technical and economic information. At least one year before each assessment, the Parties shall convene appropriate panels of experts qualified in the fields mentioned and determine the composition and terms of reference of any such panels. Within one year of being convened, the panels will report their conclusions, through the Secretariat, to the Parties.
One of these panels — the UNEP Technology and Economic Assessment Panel (TEAP) — is a standing subsidiary body established by the Meeting of the Parties to the Montreal Protocol. It is comprised of hundreds of government, industry, and NGO experts from around the world and is coordinated by the UNEP Ozone Secretariat. The TEAP is responsible for conducting this assessment and reporting to the Parties about: (a) the state of the art production and use of technology, options to phase out the use of ozone-depleting substances, and techniques for recycling, reuse, and destruction; and (b) economic effects of ozone layer modification and economic aspects of technology.
For more information on the assessment panels, see http://www.unep.org/ozone