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http://dx.doi.org/10.5572/ajae.2014.8.2.069

Assessing the Impact of Locally Produced Aerosol on the Rainwater Composition at the Gosan Background Site in East Asia  

Han, Yeongcheol (Division of Climate Change, Korea Polar Research Institute)
Huh, Youngsook (School of Earth and Environmental Sciences/RIO, Seoul National University)
Publication Information
Asian Journal of Atmospheric Environment / v.8, no.2, 2014 , pp. 69-80 More about this Journal
Abstract
It is often assumed that atmospheric observations at remote sites represent long-range transport of airborne material, and local influences are overlooked. We evaluated the impact of local input on the rainwater composition at Gosan Station, a strategic site for monitoring the continental outflow from Asia. We analyzed a 14-year record of rainwater chemical composition archived by the Korea Meteorological Administration and detected local terrestrial contribution for nitrate, sulfate and ammonium. We also measured the chemical composition of rainwater sampled simultaneously at multiple locations within the premises of the Gosan Station, from which local influence with meter-scale spatial heterogeneity could be discerned. We estimate that the local input accounted for at least ~10% of the wet deposition of nitrogen and ~12% of the wet deposition of sulfur during the 14 years. This highlights the significance of the local influence, which should be carefully assessed when interpreting atmospheric observations at this site.
Keywords
Local sources; Local aerosol; Rainwater chemistry; Background atmosphere; Wet deposition;
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Times Cited By KSCI : 3  (Citation Analysis)
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