Fine (PM2.5) and Coarse (PM2.5-10) particulate matter on a heavily trafficked London highway: Sources and Processes

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A large dataset for PM2.5 and PMcoarse (PM2.5-10) concentrations monitored near a busy London highway (Marylebone Road) has been analyzed to define the factors that lead to high concentrations. The following have been highlighted as major influencing parameters: wind speed, prevailing wind direction (because of its role on the microscale dispersion within the street), the daily cycle of the atmospheric boundary layer (stable during the night/ convective and mixed during the day), and traffic density. The mainly diesel heavy-duty vehicles are the main source of fine particulate matter at Marylebone Road. In particular, lorries (trucks) dominate PM10 exhaust emissions which are mainly in the fine (


Original languageEnglish
Pages (from-to)7768-7776
Number of pages9
JournalEnvironmental Science & Technology
Publication statusPublished - 15 Oct 2005