Quantification of Non-Exhaust Particulate Matter Traffic Emissions and the Impact of COVID-19 Lockdown at London Marylebone Road
نویسندگان
چکیده
This research quantifies current sources of non-exhaust particulate matter traffic emissions in London using simultaneous, highly time-resolved, atmospheric mass and chemical composition measurements. The measurement campaign ran at Marylebone Road (roadside) Honor Oak Park (background) urban monitoring sites over a 12-month period between 1 September 2019 31 August 2020. data were used to determine the increment (roadside–background) covered range meteorological conditions, seasons, driving styles, as well influence COVID-19 “lockdown” on concentrations. Non-exhaust (PM)10 concentrations calculated tracer scaling factors for brake wear (barium), tyre (zinc), resuspension (silicon) average vehicle fleet emission factors, CO2 “dilution approach”. effect lockdown, which saw 32% reduction volume 15% increase speed Road, resulted lower PM10 PM2.5 increments but similar concentrations, confirming that are complex. Brake was found be highest source. In addition, results indicate dependent upon road surface wetness conditions. Further statistical analysis incorporating wider variability mix, speeds, advanced source apportionment PM data, undertaken enhance our understanding these important sources.
منابع مشابه
TRL Limited PUBLISHED PROJECT REPORT PPR231 NON-EXHAUST PARTICULATE MATTER EMISSIONS FROM ROAD TRAFFIC: SUMMARY REPORT
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2021
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos12020190