AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Real-time Measurements of PM2.5, Black Carbon, Sound and Traffic Dynamics Near a Major Highway
SIVARAMAN BALACHANDRAN, Corey Jonathan, Ann Dillner, Farzan Oroumiyeh, Hui Ren, Harika Tadepally, University of Cincinnati
Abstract Number: 481 Working Group: Urban Aerosols
Abstract The Port of Cincinnati moved 49,930,467 tons of goods in 2014, making it the 13th largest (as well as the largest inland) port in the US. Concomitant with this growth in the port has been an increase in freight traffic. The highest volume of traffic in Cincinnati is on I-75 near Exit 3, where the daily traffic exceeds over 185,000 vehicles per day, with approximately 20% of this traffic being comprised of heavy duty trucks. The Southwest Ohio Air Quality Agency (SWOAQA) also has a near roadway (NR) monitoring site adjacent to I-75 approximately ΒΌ of a mile from Exit 3. Therefore, this location provides an ideal field laboratory to measure traffic, air pollution and sound, leading to a greater understanding of air pollution concentrations and traffic state during daily congested periods as well as intermittent incidents.
Traffic dynamics data will be gathered by using an Electronically Scanning Radar (ESR) (Delphi ESR 2.5). This allows for data gathering to evaluate microscopic traffic models, including individual vehicle classification, speed, location and acceleration. Real-time PM2.5 will be measured using portable DustTrak PM2.5 monitor (TSI), which can concurrently measure continuous PM2.5 and time-integrated Teflon filter-based samples. Real-time black carbon (BC) will be measured using microAethalometers (AE51, Aethlabs). 24-hour Teflon filter samples will be analyzed for organic and elemental carbon using Fourier Transform Infrared Spectroscopy (FT-IR) and for metals using x-ray fluorescence. In addition the to the NR site, the portable air quality monitors will also be co-located at the Chemical Speciation Trends (CSN) site located on Taft Rd. in central Cincinnati (TAFT), allowing for evaluation of the portable monitors and the FT-IR method. Sound measurements and traffic dynamics data will be used to statistically model PM2.5 and BC concentrations. The first phase of data gathering will be undertaken in the summer of 2016.