• MegaSenseSmartCity

Air Quality Crisis in Cities

Updated: Sep 14, 2020

Many cities such as Helsinki have networks of strategically placed high-accuracy automatic air quality monitors, a larger network of passive lower-cost NO2 diffusion samplers, and access to world-class modelling of emissions through the regional Atmospheric Emissions Inventory.

However, despite this capability, a very small proportion of the city is covered by air quality measurements, especially for the smallest particles (including PM2.5, Ultra Fine Particles, Black Carbon). This limits the ability of Helsinki and similar cities in their ability to fully understand how pollution varies over space and time, including the extent to which localized pollution hotspots exist and change.

Incomplete observational data means cities lacks an optimal detailed baseline against which to design, target and assess the impact of policies, and to engage citizens with information about air quality that is relevant to their lives – as they live, work and travel.

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