The UNFCCC (United Nations Framework Convention on Climate Change) is an UN initiative to better understand what climate change is and how to treat it. This convention was adopted during the "Earth Summit" of Rio de Janeiro in 1992 by 154 states and all members of the European Community. It entered into force on 21 March 1994. In 2004, it was ratified by 189 countries.
It includes the provisions on the communication of information relating to emissions into the air; namely, direct greenhouse gas emissions (CO2, CH4, N2O, HFC, PFC, SF6, NF3) and indirect effect gases (NOx, CO, NMVOC, SO2). It recognizes that the climate system is a shared resource whose stability can be affected by human-induced CO2 emissions as well as other greenhouse gases.
According to the Convention, governments:
collect and disseminate information on greenhouse gases, on the different national policies and on the best practices;
implement national strategies to face greenhouse gas emissions and adapt to anticipated impacts, including the provision of financial and technological support to developing countries;
cooperate to prepare for adaptation to the impacts of climate change.