Multi-hazard dependencies can increase or decrease risk


Nature Climate Change, Published online: 30 June 2020; doi:10.1038/s41558-020-0832-y

In risk analysis, it is recognized that hazards can often combine to worsen their joint impact, but impact data for a rail network show that hazards can also tend to be mutually exclusive at seasonal timescales. Ignoring this overestimates worst-case risk, so we therefore champion a broader view of risk from compound hazards.