WMO supports the 1992 United Nations Framework Convention on Climate Change (UNFCCC), the chief global forum for international collaboration and action on climate change, through a wide range of scientific and technical inputs, including support through the Intergovernmental Panel on Climate Change (IPCC). At the annual Session of the Conference of Parties (COP) to the Convention, WMO plays a crucial role by providing the latest scientific advice and information to governments, including the Statement on the State of the Global Climate and the Greenhouse Gas Bulletin. By promoting and coordinating many of the observing systems and research networks that underpin climate science, the WMO has played a leading role in convincing governments to address climate change.
In December 2015, the Parties to the Climate Change Convention adopted the Paris Agreement, setting out a global pathway for reducing greenhouse gas emissions and building climate resilience. The Agreement’s central aim is to strengthen the global response to the threat of climate change by keeping global mean temperature rise this century well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5 degrees Celsius. The Agreement also aims to strengthen the ability of countries to deal with the impacts of climate change. On 5 October 2016, the threshold for entry into force of the Paris Agreement was achieved. The Agreement entered into force on 4 November 2016.