Software package and user guide for multi- hazard and multi-risk scenario generation

This deliverable presents the MYRIAD-EU Multi-Risk Toolkit - a modular, open-source software
platform developed under Work Package 5 to support comprehensive multi-hazard and multi-risk
scenario generation.

Designed to address the complexity of systemic risk in a changing climate, the toolkit enables
quantitative, semi-quantitative, and qualitative assessments across hazards, sectors, and
geographies. Through its web-based interface and integrated QGIS plugin, the software empowers
users to explore cascading impacts, test mitigation strategies, and support decision-making with
evidence-based risk insights. This was one of the key findings as part of WP5, that only quantitative
modelling cannot fully encompass the needs of sectors towards multi-risk.
The toolkit comprises core analytical modules including the Curve Explorer, Exposure at Risk,
Scenario Calculator, Scenario Showcase, and the Vulnerability Index Editor. These allow users to
visualise vulnerability functions, assess sectoral exposure, simulate risk under concurrent or
sequential hazards, and generate spatial vulnerability indices. Complementary observatories, such

as the EU Tourism Resilience Observatory, further extend the toolkit’s application to destination-
specific risk profiling and sectoral solutions, specifically for tourism.

Integration with datasets and concepts from across MYRIAD-EU (WPs 1–4, 6) ensures alignment
with state-of-the-art risk science and stakeholder-driven methodologies.
The user guide, included in this deliverable, provides detailed operational support for deploying and
applying the toolkit in research and policy settings. It includes setup instructions, methodological
background, user workflows, and guidance on future extensibility. Future enhancements will focus
on improving sectoral data coverage, dynamic vulnerability integration, and long-term usability. The
toolkit is accessible via www.myriad-multirisk.eu and maintained by Risklayer to ensure ongoing
relevance beyond the project duration.