Stages and results 1979-1995
1988: Establishment of the IPCC
The IPCC (Intergovernmental Panel on Climate Change) is established by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP). Its mission is to review and assess the status of scientific, technical and socio-economic knowledge about the causes and consequences of global climate change and publish periodic reports.
1990: Second World Climate Conference
The demand for negotiations on a convention for the protection of the climate is widely supported. The 137 participating states and the European Union pass a concluding Ministerial Agreement, in which various principles are supported that would later be included in the Climate Change Convention. The principles in question are:
- climate change "as a common concern of humankind"
- the "common but differentiated responsibility of countries at different levels of development"
- the concept of sustainable development
- the precautionary principle.
1992: Earth Summit in Rio de Janeiro
The United Nations Framework Convention on Climate Change is opened for signature by the participating countries at the "Earth Summit" of 4 June 1992 in Rio de Janeiro. The Climate Change Convention enters into force on 21 March 1994 following its ratification by 50 states. The number of ratifications increased to 189 over the following ten years.
1995: Second IPCC Assessment Report
The Second IPCC Assessment Report, which was compiled by scientists and experts from all over the world, reaches the conclusion that an identifiable human influence on the global climate exists.