Abstract
There is a lack of publicly available tools for first and second responders and local authorities to evaluate the impact chains of multi-hazard events, with cascading hazards that result in cascading impacts. Within the framework of the EU HORIZON Europe PARATUS project, we are developing an open and online, usercentered methodology and tool for systemic risk assessment, co-designed with stakeholders and addressing physical, socio-economic, and environmental aspects. It will consist of guidelines and lessons learned, links to datasets and tools for multi-hazard risk assessments that consider future scenarios and adaptation measures. We foresee that the PARATUS Platform will have two major blocks: an information service that provides static information (or regularly updated information) and a simulation service, which is a dynamic component where stakeholders can interactively work with the tools in the platform. Based on the analysis of impact chains for historical disaster events we will develop a WIKI with standardized impact chains. These form the basis for the simulation of future events, with particular emphasis on crossborder and cascading impacts. The simulation platform will consists of tools that are dynamic and interactive, and which support the stakeholders to define, analyze and quantify the impact of multi-hazard events, now and under different future scenarios, and to evaluate which risk reduction options would be most suitable.