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Aerosol composition change between 1992 and 2002 at Gosan, Korea

Title
Aerosol composition change between 1992 and 2002 at Gosan, Korea
Authors
Park M.H.Kim Y.P.Kang C.-H.Shim S.-G.
Ewha Authors
김용표
SCOPUS Author ID
김용표scopus
Issue Date
2004
Journal Title
Journal of Geophysical Research D: Atmospheres
ISSN
0148-0227JCR Link
Citation
Journal of Geophysical Research D: Atmospheres vol. 109, no. 19, pp. D19S13 1 - 7
Indexed
SCOPUS WOS scopus
Document Type
Article
Abstract
TSP composition data and backward trajectory analysis results at Gosan, Korea, for 10 years between March 1992 and February 2002 are studied to understand the site characteristics and the relationship between the aerosol composition and meteorological conditions. The average non-sea-salt-(nss)-sulfate concentration (6.74 μg m-3) is higher than those observed at other background areas in the world. It was demonstrated that the observed high level of sulfate is due to transport from outside the site. The concentrations of nss-sulfate/ammonium/nss-potassium, sodium/chloride/magnesium, and nss-calcium/nitrate show a strong relationship, suggesting their common emissions sources and/or transport pattern. It is likely that the concentration ratio of nss-sulfate to nitrate is decreasing because of the increase of the nitrate concentration. On the basis of various measurement and emission estimate studies, it is suggested that this trend is mainly caused by the emission trend change in China. About half of the air mass trajectories are from northern China, and a quarter are from southern China. On the basis of cluster analysis, it was found that when air parcels moved from China, the concentrations of nss-sulfate, ammonium, and nitrate are the highest. Copyright 2004 by the American Geophysical Union.
DOI
10.1029/2003JD004110
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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