Key Messages

Established in 1988, the U.N. Intergovernmental Panel on Climate Change (IPCC) has been bringing out climate change assessment reports on a periodic basis. So far, it has produced six assessment reports, three special reports, as well as methodology reports that provide guidelines for estimating greenhouse gas (GHG) emissions and removal.

Three reports from the sixth assessment cycle (AR6) of the IPCC were published during 2021-2022, and the synthesis report came out in early 2023. These reports – prepared by scientists from the 195 countries that are part of the U.N. Framework Convention on Climate Change (FCCC) – delve into the physical science; the consequences, adaptation, and vulnerability; and the climate mitigation aspects of climate change.

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IPCC work on seventh climate assessment threatened by shorter timelines