Built environment and human behavior boosting Slow-onset disaster risk

Air pollution concentration and heat wave intensity represent the most recurrent evidence of SLow-Onset Disaster risks that rapidly affect the population in cities. Their manifestation and concurrence depend on the context’s environmental conditions and mass behavior of citizens; risk is more likely to surge during summer, a season progressively getting longer and warmer. This represents even higher risk, since heat and radiation can intensify ground-level pollution. However, these evidences are mostly experienced within the Built Environment, as some of its characteristics have proven to intensify their effect. Thus, this work concentrated on ap-plying data driven methods and tools for identifying representative portions of the Built Envi-ronment in Italian cities (extrapolated from the city of Milan), characterized by extensive his-torical, cultural and architectural heritage, in which critical air pollution concentration and heat wave intensity typically arises. In this analysis, urban canyon and piazzale were identi-fied as morphologies displaying high exposure and vulnerability; also, construction and be-havioral customs are considered.