Program day 3

Convenors: Ines Camilloni - Centro de Investigaciones del Mar y la Atmósfera (CIMA), Argentina; Peter Irvine - University College London, UK; Romaric C. Odoulami - University of Cape Town, South Africa

Session description : Contributions focusing on high mitigation scenarios, overshoot and impact on the dynamics of the Earth System and reversibility of changes. Also contributions on direct climate interventions such as solar radiation modification (SRM), Carbon dioxide Removal (CDR), marine cloud brightening (MCB) and potential impacts on climate response but also on society and ecosystems; ethical implications of climate interventions.

Convenors: William Lipscomb - UCAR, USA; Petra Langebroek - Bjerknes Centre for Climate Research, Norway; Natalya Gomez - McGill, Canada

Session description: This will include current and future changes in ice sheets dynamics, sea level rise and their impacts on natural and human systems.

Convenors: Piotr Wolski - University of Cape Town, South Africa; Monica Morrison - UCAR, USA; Abu Syed - Bangladesh Centre for Advanced Studies (BCAS), Bangladesh

Session description : Gaps between information generated from model simulation experiments (i.e., CMIP/MIPs) and regional/local information needs (i.e., adaptation, resilience, impacts studies). Differences in scale—temporal and spatial—and understanding of drivers of impacts—dynamics versus thermodynamic focus. Model adequacy and skill relative to actionable climate questions. Addressing differences between developer perceptions of usefulness and information usability. Knowledge translations and presentation (quantitative versus qualitative) of model output and disparate values between producers and users (e.g., inductive risk considerations).

Convenors: Roland Séférian - Météo France, France; Chris Smith - University of Leeds, UK

Session description : The effective radiative forcing has emerged as the key metric of evaluating human and natural influence on the climate. Several components remain uncertain, particularly regionally heterogenous forcings such as aerosols and short-lived, chemically active greenhouse gases including methane. This session aims to conduct a community discussion on the assessment of anthropogenic and natural radiative forcings and their interaction with historical and future scenarios. Contributions investigating how historical and future radiative forcing could interface with climate mitigation pathways and other components of climate system uncertainty including climate sensitivity and carbon budgets are welcome.

Keynote speakers: Piers Forster - University of Leeds; UK; Sophie Szope - Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL), France

Convenors: Andy Turner - University of Reading, UK; Suryachandra Rao Anguluri - Indian Institute of Tropical Meteorology, India; Paola Andrea Arias Gomez - University of Antioquia, Colombia; Tereza Cavazos - Center of Scientific Research and Higher Education of Ensenada, Mexico

Session description : Advances in understanding, predicting and modeling monsoonal systems in the current and future climate.

Convenors: Jana Sillmann - University of Hamburg, Germany; Tim Raupach - University of New South Wales (UNSW), Australia; Shampa - Bangladesh University Of Engineering and Technology, Bangladesh; Olivia Romppainen-Martius - Geographisches Institut, Switzerland

Session description : In this session we welcome contributions that give the latest scientific insights and highlight knowledge gaps on observations and simulations of extreme events and hazards in the context of a changing climate. Extreme events include long-duration events (heatwaves, droughts), short-duration events (heavy precipitation, tropical and extratropical cyclones, storms) and cascading and compounding events. Hazards include past, current, and future hazards, and the factors (e.g. vulnerability, exposure, adaptive capacity) that make a hazard a hazard. We also encourage contributions related to warning and forecasting of hazards and extreme events, including early warning and forecast skill across temporal and spatial scales, impact-based forecasting, and climate information essential for early warnings.

Keynote speakers: Sally Potter - Te Pū Ao - GNS Science, New Zealand; Saiful Islam AKM - Institute of Water and Flood management, Bangladesh University of Engineering and Technology, Bangladesh; Gabi Hegerl - The University of Edinburgh, United Kingdom

Convenors: Daouda Kone - Ivorian Association for Agricultural Sciences (IAAS), Ivory Coast; Gensuo Jia - CAS Institute of Atmospheric Physics, China

Session description : Assess impact of climate change (including extremes) on terrestrial and marine ecosystems, risks of ecosystem shifts, dieback and irreversibility.

Keynote speaker: Carolina Adler - Mountain Research Initiative & GEO Mountains, Switzerland

Convenors: Abdou Ali Cra - AGRHYMET Regional Center, Niger; Martin Visbeck - GEOMAR, Germany

Session description: Quality and contradictions; discovery, access and data sparse regions. Observations to test mitigation approaches. Observations for attribution studies.

Convenors: Francisco J. Doblas-Reyes - Barcelona Supercomputing Center, Spain; Caio Augusto dos Santos Coelho - Centro de Previsão de Tempo e Estudos Climáticos, Brazil; Chi Huyen Truong - Himalayan University Consortium, Mountain Knowledge and Action Networks, Nepal

Session description : Distillation/downscaling methods and approaches. Managing contradictions in downscaled information. Integrating global/regional / local scale information. Regional information for compound events.

Convenors: Meghan Cronin - NOAA Pacific Marine Environmental Laboratory (PMEL), USA; Precious Mongwe - Council of Scientific and Industrial Research (CSIR), South Africa; Luciano Pezzi - Instituto Nacional de Pesquisas Espaciais (INPE), Brazil

Session description : Processes involving air-sea interaction and air-sea ice interaction affecting regional and global climate, including surface energy fluxes, chemical interactions and dynamical interactions.

Keynote speakers: Lisa Miller - DFO Institute of Ocean Sciences (IOS), Canada; Sarah-Anne Nicholson - Southern Ocean Carbon-Climate Observatory (SOCCO), CSIR, South Africa; Richard Cornes - National Oceanography Centre (NOC), UK