WMO supports UNFCCC through a wide range of scientific and technical inputs, including its support through the IPCC, thereby contributing to adaptation, mitigation and capacity development. Every year, WMO participates in sessions of the Conference of Parties (COP) of UNFCCC, providing the latest scientific advice and information to governments, including the Statement on the State of the Global Climate and the Greenhouse Gas Bulletin.

The authoritative advice and information provided by WMO draws from the scientific expertise of the National Hydrological and Meteorological Services of its Members and of international and regional data centres and agencies. Moreover, WMO promotes a better understanding of the societal impacts of climate change within the United Nations system.

The 1992 United Nations Framework Convention on Climate Change (UNFCCC) is the chief global forum for international collaboration and action on climate change. The world’s governments meet regularly for both the annual Session of the Conference of the Parties (COP) to the Convention and for other preparatory and related meetings. In December 2015, the Parties adopted the Paris Agreement setting out a global pathway for reducing greenhouse gas emissions and building climate resilience. 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. It provides authoritative advice on climate change mitigation and adaptation.

WMO supports the Climate Change Convention through a wide range of scientific and technical activities. The Secretary-General and other WMO officials participate in sessions of the Conference of the Parties (COP) each year to provide the latest scientific advice and information to governments. WMO, with support from representatives of National Meteorological and Hydrological Services (NMHSs),  contributes to each COP.

The Paris Agreement builds upon the Climate Change Convention.  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. Additionally, the agreement 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.

WMO activities at the COP 24 in Katowice

WMO News

Climate impacts in 2018 Climate change impacts highlight need for action at COP24
The annual United Nations climate change conference has opened with calls for urgent action to prevent runaway climate change and devastating impacts for the planet.


WMO Side events: More information here


The WMO Greenhouse Gas Bulletin

Greenhouse Gas Bulletin 2017 Cover 

Available  in ArFr, RuSp and Zh

The State of the Global Climate in 2018

State of Global Climate 2018 

How WMO helps the UNFCCC

To fulfill its mandate in the field of climate variability and climate change, WMO: