Establishing a link between vehicular PM sources and PM measurements in urban street canyons.
The Brooklyn Traffic Real-Time Ambient Pollutant Penetration and Environmental Dispersion (B-TRAPPED) study, conducted in Brooklyn, NY, USA, in 2005, was designed with multiple goals in mind, two of which were contaminant source characterization and street canyon transport and dispersion monitoring. In the portion of the study described here, synchronized wind velocity and azimuth as well as particulate matter (PM) concentrations at multiple locations along 33rd Street were used to determine the feasibility of using traffic emissions in a complex urban topography as a sole tracer for studying urban contaminant transport. We demonstrate in this paper that it is possible to link downwind concentrations of contaminants in an urban street canyon to the vehicular traffic cycle using Eigen-frequency analysis. In addition, multivariable circular histograms are used to establish directional frequency maxima for wind velocity and contaminant concentration.
Eisner
Alfred D
AD
Alion Science and Technology, P.O. Box 12313, Research Triangle Park, NC 27709, USA. eisner.alfred@epa.gov
Richmond-Bryant
Jennifer
J
Wiener
Russell W
RW
Hahn
Intaek
I
Drake-Richman
Zora E
ZE
Ellenson
William D
WD
D000393:Air Pollutants / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis; D001272:Atmosphere / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods*; D007700:Kinetics; D016014:Linear Models; D009519:New York City; D052638:Particulate Matter / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis*; D014919:Wind
D000393:Air Pollutants; D052638:Particulate Matter; D001335:Vehicle Emissions