Program day 2

Convenors: Thomas Stocker - University of Bern, Switzerland; Katrin Meissner - University of New South Wales, Australia; Krishna Achuta Rao - Indian Institute of Technology, India

Session description : Advances in assessment, understanding, modeling and impact of potential rapid and/or irreversible changes (sometimes known as “tipping points”) in the climate system potential irreversible changes in ice sheets, sea-ice, forests, permafrost, AMOC and coral reefs etc.

Convenors: Galen McKinley - Columbia University, USA; Pedro Monteiro - Stellenbosch University, South Africa; Ana Bastos - Max-Planck-Institut für Biogeochemie, Germany

Session description: Advances in understanding of the land and ocean carbon cycle perturbation over the historical period and into the 21st century and beyond.

Keynote speakers: Pep Candell - CSIRO, Australia; Precious Mongwe - CSIR, South Africa; Junjie Liu - NASA JPL, USA; Kirsten Zickfeld - Simon Fraser University, Canada

Convenors: Julie Arrighi - Red Cross, USA

Session description : The power of learning from humility, honesty and admitting failure. How climate services can go wrong. Contested power dynamics. Mis-communicating certainty. Misunderstandings and confusion. Assumptions and biases. Cross-cultural complications. Fostering a community of collaboration versus competition.

Convenors: Chris Lennard - University of Cape Town, South Africa; Addisu Semie - Addis Ababa University, Ethiopia; Elisabeth Vogel - University of New South Wales (UNSW), Australia

Session description : Assess impact of climate change (including extremes) on human systems with a focus on water resources, agriculture and food supply, etc.

Convenors: Bjorn Stevens - Max-Planck-Institut für Meteorologie, Germany; Ruby Leung - Pacific Northwest National Laboratory, USA; Tianjun Zhou - Chinese Academy of Sciences, China

Session description : Advances in global and regional climate and Earth System modelling, including the benefits of increasing resolution, improved parametrizations and ensembles for exploring uncertainty. Including novel techniques with artificial intelligence and machine learning.

Convenors: Toste Tanua - GEOMAR, Germany; Han Dolman - Royal Netherlands Institute of Sea Research (NIOZ), The Netherlands; Magdalena Balmaseda - ECMWF, UK; Juan Ruiz - Centro de Investigaciones del Mar y la Atmósfera (CIMA), Argentina

Session description : Advances in observing the climate system, including new space-based and Earth-based platforms, new technologies, and new data sets, and advances in data assimilation and reanalysis, with a particular focus on climate science requirements and opportunities. Including novel techniques with artificial intelligence and machine learning.

Convenors: Sandrine Bony - Laboratoire de Météorologie Dynamique (LMD-IPSL), France; Steven Sherwood - University of New South Wales (UNSW), Australia; Masahiro Watanabe - University of Tokyo, Japan

Session description : Advances in understanding the physical feedbacks which shape the climate response to radiative forcings, and their combination to determine transient and equilibrium climate sensitivity. The role of clouds in the climate system is a particular focus.

Keynote speakers: Adrian Tompkins - ICTP Trieste, Italy; Trude Storelvmo - University of Oslo, Norway; Nadir Jeevanjee - NOAA/GFDL, USA

Convenors: Ángel G. Muñoz - Barcelona Supercomputing Center, Spain; Franck Eitel Ghomsi - University of Yaounde, Cameroon; Yong Luo - Tsinghua University, China

Session description: Developing early warning systems. Impact and risk probability. Integration with quantitative impact analyses (contributions to IPCC AR7 and Global Stocktake). Climate triggers for anticipatory adaptation.

Convenors: Julia Pongratz - Ludwig-Maximilians-Universität München, Germany; David Lawrence - UCAR, USA; Anna Ukkola - University of New South Wales (UNSW), Australia

Session description : Role of changes in land cover and land use on the Earth system. This includes changes in biophysical and biogeochemical cycles and includes direct human alteration of the continental water cycle.

Convenors: Thando Ndarana - University of Pretoria, South Africa; Tiffany Shaw - University of Chicago, USA; Marcia Zilli - University of Oxford, UK

Session description : Advances in understanding processes and variability of eddies, storm tracks and jets from mesoscale to planetary scale at all latitudes and levels in the atmosphere and ocean. Studies related to dynamical mechanisms of the storms and jet response to climate change will be included.

Keynote speakers: Amanda Maycock - Leeds University, UK; Sukyoung Lee - Penn State University, USA; Thando Ndarana - University of Pretoria, South Africa