An upscaling multi-level and multi-hazard risk assessment for heat and other natural hazards concerning vulnerable groups in Žilina, Slovakia

Abstract Climate change, natural hazards and heat stress increasingly affect everyone, with particularly severe impacts on vulnerable populations and individuals with special needs. However, there is a research gap in integrating peoples’ needs with different levels of the built environment and spatial planning frameworks. This study analyses Žilina city, a major hub in North-Western Slovakia that is exposed to multiple natural hazards. A spatial assessment is conducted in this study, showing heat, earthquake, fire, flood, and landslide risks for the city, using Geographic Information Systems (GIS). Critical infrastructure exposure is mapped, and a built environment typology is developed to provide additional detail. Building exterior and interior information for the vulnerability analysis of the building and its current occupants is gathered through site visits, orthophotography, and street view photography. The results reveal hotspots of risk and special needs groups, as well as how this information can be scaled up to improve evacuation and reduce heat stress. This risk transect analysis, encompassing the individual, building, built environment, and city levels, can support more integrated and effective multi-risk assessment and management.