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Long-term trend of aerosol composition and direct radiative forcing due to aerosols over Gosan: TSP, PM10, and PM2.5 data between 1992 and 2008

Title
Long-term trend of aerosol composition and direct radiative forcing due to aerosols over Gosan: TSP, PM10, and PM2.5 data between 1992 and 2008
Authors
Kim N.K.Kim Y.P.Kang C.-H.
Ewha Authors
김용표
SCOPUS Author ID
김용표scopus
Issue Date
2011
Journal Title
Atmospheric Environment
ISSN
1352-2310JCR Link
Citation
vol. 45, no. 34, pp. 6107 - 6115
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
In this study, size segregated measurement data between 1992 and 2008 at Gosan, Jeju, Korea were analyzed. Long-term trend of aerosol composition changes related to the emission change was analyzed and direct radiative forcing due to aerosols over Gosan was calculated. The concentration variations of ion components and carbonaceous aerosols matched well to the emission changes in Northeast Asia, and the concentration variations of the elements with natural origin were highly correlated to the frequency of dust storms in the region. The net aerosol forcing varied from -4.48 W m-2 to 0.53 W m-2 at Gosan and it was increasing. This was mainly because of continuous decrease of sulfate concentration and steady increase of EC concentration in the region. It was found that for the determination of the direct aerosol radiative forcing, relative humidity (RH) was most critical during summer season when it was high (over 75%), and EC was most critical during spring and fall. © 2011 Elsevier Ltd.
DOI
10.1016/j.atmosenv.2011.08.051
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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