Research data supporting “Limited Impact of Diesel Particle Filters on Road Traffic Emissions of Ultrafine Particles”

Particle dataset at LMR over 2010-2021 differentiate by wind direction, including an annual average of Nucleation, Aitken, and accumulation mode; Annual average of Particle Number Size Distribution (PNSD). Another data is the proportion of vehicle fleet, particularly HGVs in Inner London, along with the annual average of BC and Accumulation mode concentration.