WCRP aims to provide an authoritative review paper that will systematically assess our understanding of threshold breaching, irreversibility, and tipping in the climate system. The paper will also provide key recommendations for how Earth systems models can be improved to better understand these processes and identify potential early warnings. This review paper will contribute to the Seventh Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), and we are working actively with the IPCC as these topics will be important across IPCC working groups (particularly WGI Chapter 8, “Abrupt changes, low-likelihood high impact events and critical thresholds, including tipping points, in the Earth system.” Consensus building and a solid knowledge base will be important contributions to the IPCC process.
Upcoming events
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High-impact climate events, tipping points, and irreversible regional impacts assessment writing meeting, New York, USA. 5-8 May 2025.
Leadership
Gabi Hegerl
Contact: Peter Abbott (
