title: Temporal distribution of air quality related to meteorology and road traffic in Madrid.
abstract: The impact of climatology--air temperature, precipitation and wind speed--and road traffic--volume, vehicle speed and percentage of heavy-duty vehicles (HDVs)--on air quality in Madrid was studied by estimating the effect for each explanatory variable using generalized linear regression models controlling for monthly variations, days of week and parameter levels. Every 1 m/s increase in wind speed produced a decrease in PM10 concentrations by 10.3% (95% CI 12.6-8.6) for all weekdays and by 12.4% (95% CI 14.9-9.8) for working days (up to the cut-off of 2.4 m/s). Increases of PM10 concentrations due to air temperature (7.2% (95% CI 6.2-8.3)) and traffic volume (3.3% (95% CI 2.9-3.8)) were observed at every 10 °C and 1 million vehicle-km increases for all weekdays; oppositely, slight decreases of PM10 concentrations due to percentage of HDVs (3.2% (95% CI 2.7-3.7)) and vehicle speed (0.7% (95% CI 0.6-0.8)) were observed at every 1% and 1 km/h increases. Stronger effects of climatology on air quality than traffic parameters were found.
authors.affiliation: ETSIM-Grupo en Economía Sostenible del Medio Natural (ECSEN), Universidad Politécnica de Madrid, C/Ramiro de Maeztu s/n, 28040, Madrid, Spain, pj.perez@upm.es.
authors.forename: Pedro J
authors.initials: PJ
authors.lastname: Perez-Martinez
authors.forename: Regina M
authors.initials: RM
authors.lastname: Miranda
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002980:Climate; D004784:Environmental Monitoring; D008685:Meteorological Concepts; D055904:Meteorology; D008962:Models, Theoretical; D052638:Particulate Matter / Q000032:analysis; D013030:Spain; D013696:Temperature; D014186:Transportation; D001335:Vehicle Emissions; D014919:Wind
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D001335:Vehicle Emissions
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