AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Diurnal Variation of On-road Black Carbon Pollution on the Motor Express Ways in Seoul
SEUNG-BOK LEE, Bo-Eun Park, Dong-Hun Lee, Seung-Jae Lee, Dae-Kwang Woo, Hyoun-Cher Jin, Gwi Nam Bae, Korea Institute of Science and Technology
Abstract Number: 317 Working Group: Urban Aerosols
Abstract Air pollution phenomena caused by vehicle exhaust are known as hot spot pollution because of frequent high concentration peaks of traffic-related air pollutants. On-road measurement is needed to examine the source emission intensity of vehicles and to understand the exposure level of hazardous pollutants to drivers nearby busy roads. Traffic-related air pollutants have been monitored regularly on the Motor Express Ways such as Naebu and Gangbyeon in Seoul in the morning and afternoon since 2009 to monitor the on-road air pollution level that is expected to be reduced by continuous effort of traffic-related environmental policies. In this study, the on-road black carbon concentration on the Motor Express Way was intensively measured with an aethalometer at daybreak and in the morning rush hour, afternoon, evening rush hour, and late evening using a mobile laboratory for four days in March, 2011. The total length of the driving route was about 40 km and average vehicle speed was in the range of 35-65 km per hour. The average black carbon concentration of each driving ranged from 4 to 22 microgram per cubic meter. The diurnal variation of the on-road black carbon concentration is analyzed together with other pollutant concentration, traffic volume and meteorological conditions.