Each year, the Conference of the Parties (COP) brings together representatives from more than 180 countries to agree ways to tackle the challenges posed by climate change.
Joined by observers from intergovernmental and non-governmental organisations as well as the media, attendees meet under the United Nations Framework Convention on Climate Change (UNFCCC). This is an international environmental treaty with the objective of stabilising greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous man-made interference with the climate system.
The UNFCCC itself sets no mandatory limits on greenhouse gas emissions for individual countries and contains no enforcement mechanisms. Instead, the treaty provides for updates (called "protocols") that would set mandatory emission limits. The Kyoto Protocol is probably the most recognised of these, becoming better known than the UNFCCC itself.
Parties to the convention have met annually since 1995 to assess progress in meeting the UNFCCC's objective.
This year, COP 18 meets in Doha, Qatar, from 26 November to 7 December 2012.
Met Office contributions include:
The Met Office held a side event on Friday 30th November and the presentations from the side event can be viewed below.