Fugitive Particulate Matter Emissions to the Atmosphere from Tracked and Wheeled Vehicles in a Desert Region by Hybrid-Optical Remote Sensing

10.4209/aaqr.2014.12.0310

Wang-Ki Yuen；Ke Du；Sotiria Koloutsou-Vakakis；Mark J. Rood；Byung J. Kim；Michael R. Kemme；Ram A. Hashmonay；Chad Meister

LIDAR ； AP-42 ； PM_(10) ； PM_(2.5) ； Flux tower method

Aerosol and Air Quality Research

15卷4期（2015 / 08 / 01）

1613 - 1626

英文

A hybrid-optical remote sensing (hybrid-ORS) method was developed to quantify mass emission factors (EFs) for fugitive particulate matter with aerodynamic diameters ≤ 10μm (PM_(10)) and ≤ 2.5μm (PM_(2.5)). In-situ range-resolved extinction coefficient and concurrent point measurements of PM_(10) and PM_(2.5) mass concentrations are used to quantify two-dimensional (2-D) PM_(10) and PM_(2.5) mass concentration profiles. Integration of each 2-D mass concentration profile with wind data, event duration, and source type provides the corresponding fugitive PM_(10) and PM_(2.5) EFs. This method was used to quantify EFs for fugitive PM_(10) and PM_(2.5) emitted from tracked and wheeled vehicles travelling on unpaved roads in a desert region. The EFs for tracked vehicles ranged from 206g/km to 1,738g/km for PM_(10) and from 78g/km to 684g/km for PM_(2.5), depending on vehicle speed and vehicle type. The EFs for the wheeled vehicle ranged from 223g/km to 4,339g/km for PM_(10) and from 44g/km to 1,627g/km for PM_(2.5). Field implementation of the hybrid-ORS method demonstrates that the method can rapidly capture multiple profiles of the PM plumes and is well suited for improved quantification of fugitive PM EFs from vehicles traveling on unpaved roads.