AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Characterization of Fine Particles by the ASCM at an Urban Background Area in Kaohsiung, Taiwan
MINNA AURELA, Sanna Saarikoski, Yee-Lin Wu, Risto Hillamo, Min-Shiou Wu, Finnish Meteorological Institute
Abstract Number: 627 Working Group: Aerosol Chemistry
Abstract In this study fine particle aerosol chemical composition was measured using the Aerodyne Aerosol Chemical Speciation Monitor (ACSM) between November 23 to December 18, 2011 at an urban background area on a roof of at 7-storey building in Kaohsiung, Taiwan (ROC). Kaohsiung is the second largest city in Taiwan, with a population around 2.9 million. Its local emissions are manufacturing, refining, shipbuilding, and other light and heavy industries. A major port is located at the city. The climate is tropical with average temperatures approximately 20 degrees Celsius and approximately three rainy days per month in November and December. In addition to ACSM, which measures non-refractory particulate organics, sulfate, nitrate, ammonium and chloride, other instruments monitored total mass concentration of particles (PM2.5 and PM10), particulate organic and elemental carbon and some gases.
The campaign average of the total mass concentration measured by ACSM was 26 µg m$^(-3). The main analyses component was organics. Its contribution was on average 55% of the all analyzed components by ACSM. The second highest contribution had nitrate (20%) followed by ammonium (12%) and sulfate (10%). According to the rough PMF analyses major part of the organics was oxygenated organic aerosol and only minor part was hydrogenated organic aerosol, which is typically originated from the traffic.