title: Multi-pollutant mobile platform measurements of air pollutants adjacent to a major roadway.
abstract: A mobile monitoring platform developed at the University of Washington Center for Clean Air Research (CCAR) measured 10 pollutant metrics (10 s measurements at an average speed of 22 km/hr) in two neighborhoods bordering a major interstate in Albuquerque, NM, USA from April 18-24 2012. 5 days of data sharing a common downwind orientation with respect to the roadway were analyzed. The aggregate results show a three-fold increase in black carbon (BC) concentrations within 10 meters of the edge of roadway, in addition to elevated nanoparticle concentration and particulate matter with aerodynamic diameter < 1 μm (PN1) concentrations. A 30% reduction in ozone concentration near the roadway was observed, anti-correlated with an increase in the oxides of nitrogen (NOx). In this study, the pollutants measured have been expanded to include polycyclic aromatic hydrocarbons (PAH), particle size distribution (0.25-32 μm), and ultra-violet absorbing particulate matter (UVPM). The raster sampling scheme combined with spatial and temporal measurement alignment provide a measure of variability in the near roadway concentrations, and allow us to use a principal component analysis to identify multi-pollutant features and analyze their roadway influences.
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222.
authors.forename: Erin A
authors.initials: EA
authors.lastname: Riley
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222.
authors.forename: Lyndsey
authors.initials: L
authors.lastname: Banks
authors.affiliation: University of Washington Department of Biostatistics, Box 357232 Seattle, WA, 98198.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Fintzi
authors.affiliation: University of Washington Department of Civil & Environmental Engineering, Box 352700 Seattle, WA, 98198.
authors.forename: Timothy R
authors.initials: TR
authors.lastname: Gould
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222.
authors.forename: Kris
authors.initials: K
authors.lastname: Hartin
authors.affiliation: University of Washington Department of Biostatistics, Box 357232 Seattle, WA, 98198.
authors.forename: LaNae
authors.initials: L
authors.lastname: Schaal
authors.affiliation: Swiss Tropical and Public Health Institute, Epidemiology and Public Health Environmental Exposure and Health Unit, Socinstrasse 57, Basel 4002, Switzerland.
authors.forename: Mark
authors.initials: M
authors.lastname: Davey
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222 ; University of Washington Department of Biostatistics, Box 357232 Seattle, WA, 98198.
authors.forename: Lianne
authors.initials: L
authors.lastname: Sheppard
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222 ; University of Washington Department of Civil & Environmental Engineering, Box 352700 Seattle, WA, 98198.
authors.forename: Timothy
authors.initials: T
authors.lastname: Larson
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Yost
authors.affiliation: University of Washington Department of Environmental and Occupational Health Sciences, Box 357234, Seattle, WA, 98198. +1 (206) 543-3222.
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Simpson
keywords: Traffic related air pollution; mobile monitoring; ozone; particulate matter; roadway gradient; ultrafine particles