Notiziario - Le interviste · RBE - Radio & Tv

Intervista integrale a Roberto Mezzalama

·11 min·1 clip

Roberto Mezzalama reveals why ozone, the 'polluter of the summer,' is a dangerous and under-monitored problem in Turin.

The episode is an interview with Roberto Mezzalama, President of the Torino Respira Committee, about the second edition of the 'Smog kills even in the summer' campaign. He introduces ozone as the 'polluter of the summer,' a significant but often overlooked issue compared to winter pollution concerns. The campaign monitored 50 points in Turin and surrounding municipalities, with data showing average ozone concentrations were higher in 2024 than 2025, partly due to weather differences like more rain in 2024. Geographically, the highest pollution levels were confirmed in green areas, city parks, and areas further from the center, with some consistency in the top ten most polluted points year-to-year. Mezzalama explains that ozone is a secondary pollutant, not directly emitted but formed in the atmosphere from precursors like traffic emissions, especially in summer when industrial chimneys are off. Vegetation can also favor ozone formation, complicating its distribution. He calls for more detailed studies by public administrations like ARPA to better understand and map the phenomenon, as current recommendations warn against outdoor physical activity during high ozone periods. The interview notes that standard winter traffic limitation measures are ineffective for ozone, as short-term interruptions don't quickly change conditions and can even worsen them initially. Mezzalama cites France's experimental approach of reducing maximum speeds on all roads, including highways, for weeks during high ozone periods. He admits lacking scientific data on the effectiveness of these measures but notes their repetition suggests perceived value. The discussion links increasing ozone intensity to climate change, with warmer, sunnier summers creating ideal formation conditions. Mezzalama suggests combined strategies, including emission limits and increased vegetation to reduce urban heat islands, addressing health risks from both ozone and heat waves. He emphasizes the need for a more complex, long-term approach to this emerging problem. The interview concludes with a question on public participation, where Mezzalama reports a small turnout at a recent meeting but hopes communication efforts will amplify the message. The episode ends with thanks and farewells.

Listen to the show on

Apple Podcasts Spotify

Play clips from this episode More from Notiziario - Le interviste