AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Aircraft-based Aerosol Composition Measurements during MAPS-Seoul
TAEHYUN PARK, Jaebum Lee, Yongjae Lim, Junyoung Ahn, Jinsoo Park, Jinsoo Choi, Jongho Kim, Soobog Park, Taehyoung Lee, Hankuk University of Foreign Studies
Abstract Number: 678 Working Group: Urban Aerosols
Abstract Aerosols influence climate change directly by scattering and absorption and indirectly by acting as cloud condensation nuclei and also some of the effects of aerosols are reduction in visibility, deterioration of human health, and deposition of pollutants to ecosystems. Urban area is large source of aerosols and aerosol precursors. Aerosol sources are both local and from long-range transport. Long-range transport processed aerosol are often dominant sources of aerosol pollution in Korea. To improve our knowledge of aerosol chemistry, Megacity Air Pollution Studies-Seoul (MAPS-Seoul) of Aircraft-based aerosol measurement took place in and around Seoul, Korea during May and June 2015 and 2016.
MAPS-Seoul campaigns were conducted to study the chemical characterization and processes of pollutants in the Seoul Metropolitan area to regional scales of Korean peninsula. Aerodyne high resolution time of flight aerosol mass spectrometer (HR-ToF-AMS) was deployed on aircraft platforms on-board King Air (Hanseo University). We characterized aerosol chemical properties and mass concentrations of sulfate, nitrate, ammonium and organics in polluted air plumes and investigate the spatial and vertical distribution of the species. The results of studies show that organics is predominant in the Aerosol and a significant fraction of the organics is oxygenated organic aerosol (OOA) at the high altitude. The results of those studies can provide highly-temporal resolved details on the width, depth and spatial distribution of the pollutant plume and aerosol, which are valuable for modeling input parameters for modeling aerosol behavior.