CL4.16.2 Media

Tipping elements in the Earth's climate system are continental-scale subsystems that are characterized by a threshold behavior. It has been suggested that these include biosphere components (e.g. the Amazon rainforest and coral reefs), cryosphere components (e.g. the Greenland and Antarctic ice sheets) and large-scale atmospheric and oceanic circulations (e.g. the thermohaline circulation, ENSO and Indian summer monsoon). Once operating near a threshold or tipping point, these components can transgress into a qualitatively different state by small external perturbations. The large-scale environmental consequences could impact the livelihoods of millions of people.

In this session, we aim to bring together experts presenting and discussing the state-of-the-art research on tipping elements in the Earth's climate system, both in empirical data and numerical modelling of past, present and future climate. Among other topics, issues to be addressed in this session include critical thresholds for specific tipping elements, typical time scales of tipping, interactions and feedbacks between tipping elements, the potential for tipping cascades as well as environmental and socio-economic impacts of tipping.

Co-organized as AS4.64/BG1.69/CR1.15/NP1.7/OS1.35
Convener: Ricarda Winkelmann | Co-conveners: Victor Brovkin, Henk A. Dijkstra, Jonathan Donges, Timothy Lenton
| Tue, 09 Apr, 14:00–18:00
Room 0.49
| Attendance Tue, 09 Apr, 10:45–12:30
Hall X5

Tuesday, 9 April 2019 | Room 0.49

Chairperson: Ricarda Winkelmann, Victor Brovkin, Jelmer Nijp, Jonathan Donges
14:00–14:15 |
| solicited
| Highlight
Stefan Rahmstorf
14:15–14:30 |
Richard Wood, Hassan Alkhayuon, Peter Ashwin, Ed Hawkins, Laura Jackson, Courtney Quinn, Jose Rodriguez, and Robin Smith
14:30–14:45 |
David I. Armstrong McKay, Sarah E. Cornell, Ingo Fetzer, and Johan Rockström
14:45–15:00 |
Dmitry Yumashev, Chris Hope, Kevin Schaefer, Kathrin Riemann-Kampe, Fernando Fernando Iglesias-Suarez, Elchin Jafarov, Eleanor Burke, Paul Young, Yasin Elshorbany, and Gail Whiteman
15:00–15:15 |
| Highlight
Zoe Thomas, Richard Jones, Chris Turney, Corey Bradshaw, Michael Bird, Christopher Fogwill, Nicholas Golledge, Jonathan Palmer, Peter Kershaw, Janet Wilmshurst, Raimund Muscheler, and Peter Cox
15:15–15:30 |
Anna von der Heydt, Mark Dekker, and Henk Dijkstra
15:30–15:45 |
Bregje van der Bolt, Egbert H. van Nes, Sebastian Bathiany, Marlies E. Vollebregt, and Marten Scheffer
Coffee break
Chairperson: Jonathan Donges, Nicholas Kettridge, Henk Dijkstra, Ricarda Winkelmann
16:15–16:30 |
| Highlight
Martin Claussen
16:30–16:45 |
Samuel Zipper, Tom Gleeson, Lan Wang-Erlandsson, Miina Porkka, Fernando Jaramillo, Dieter Gerten, Luigi Piemontese, Ingo Fetzer, Sarah Cornell, Line Gordon, and Johan Rockstrom
16:45–17:00 |
Valentin Wendling, Christophe Peugeot, Angeles Garcia Mayor, Pierre Hiernaux, Eric Mougin, Romain Walcker, Manuela Grippa, Laurent Kergoat, and Thierry Lebel
17:00–17:15 |
Georgii Alexandrov, Victor Brovkin, and Thomas Kleinen
17:15–17:30 |
Ype van der Velde, Maarten Braakhekke, Nickolas Kettridge, Carl Mendoza, and Kevin Devito
17:30–17:45 |
Valerie N. Livina
17:45–18:00 |
Ilona M. Otto, Jonathan F. Donges, Avit Bhowmik, Roger Cremades, Wolfgang Lucht, Johan Rockström, Franziska Allerberger, Sylvanus Doe, Richard Hewitt, Alex Lenferna, Mark McCaffrey, Nerea Moran, Detlef P. van Vuuren, and Hans Joachim Schellnhuber