ES1.4
From hazards to impacts: understanding the mechanisms behind single and compound climate events
Convener: Martin Drews | Co-Conveners: Hilppa Gregow, Bart van den Hurk, Jakob Zscheischler

The occurrence of high-impact climate, weather and hydrological events can have significant and sometimes catastrophic consequences to society. This particular applies to compound events, resulting from the interaction of multiple hazards (that are not necessary disastrous when standing alone) across various spatial and temporal scales and/or the joint failures of multiple human or natural systems. As a result, it is crucial to develop new methodologies that account for the possible interaction of multiple physical and socio-economic drivers when analysing high-impact events. Similarly, it is critical that stakeholders are involved in this research as both providers and users of knowledge to ensure that the scientific state-of-the-art may be converted into practice.
Invited are contributions related to better understanding the interplay of mechanisms causing high impact compound events and stakeholders response. Also contributions on the ability of climate/weather, statistical, and impact models to represent compound events in a current and future climate are welcome.
Likewise, we invite contributions that highlight aspects of the science-user interface also from the social science aspects in the case of high impact climate and weather events, e.g., which events are most relevant for users, and how can continued deep stakeholder engagement be ensured.
This session is jointly convened by the European COST Action DAMOCLES and the ECRA (European Climate Research Alliance) Collaborative Programme on “High Impact Events and Climate Change”.
DAMOCLES aims to coordinate European efforts specifically related to studying compound events by building a research network consisting of climate scientists, impact modellers, statisticians, and stakeholders. The COST Action is focusing around five themes: synthesis and analysis; stakeholders and science-user interface; impacts; statistical approaches, model development and evaluation; and realistic model simulations of events.
Similarly, ECRA aims to promote collaborative research on the mechanisms behind high impact events and climate extremes, simulation of high- impact events under present and future climatic conditions, and on how relevant information for climate risk analysis, vulnerability and adaptation may be co-created with users, e.g., in terms of tailored climate services.

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