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Analysis of Seasonal Characteristics about Long-Range Transport and Deposition of Sulfur

황(S)의 장거리 이동 및 침적량에 대한 계절별 특성 분석

  • Hong, Sung-Chul (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Lee, Jae-Bum (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Moon, Kyung-Jung (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Song, Chang-Keun (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Bang, Cheol-Han (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Choi, Jin-Young (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Kim, Jeong-Soo (Air Quality Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Hong, You-Deog (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)
  • 홍성철 (국립환경과학원 기후변화연구과) ;
  • 이재범 (국립환경과학원 기후변화연구과) ;
  • 문경정 (국립환경과학원 기후변화연구과) ;
  • 송창근 (국립환경과학원 기후변화연구과) ;
  • 방철한 (국립환경과학원 기후변화연구과) ;
  • 최진영 (국립환경과학원 기후변화연구과) ;
  • 김정수 (국립환경과학원 대기환경연구과) ;
  • 홍유덕 (국립환경과학원 기후변화연구과)
  • Published : 2010.02.28

Abstract

Long-range transport of air pollutants was simulated using Comprehensive Acid Deposition Model (CADM) and Yonsei University-Sulfuric Acid Deposition Model (YU-SADM). For the simulation, weather patterns that represent the four seasons were derived through a clustering analysis with 5-years of meteorological data. The simulation result showed that in spring, influenced by strong low pressure from China, air pollutants of moved to the Korean Peninsula. In summer, humid air moved into the Korean Peninsula across the Yellow Sea while the north pacific high pressure extended, making the concentration of air pollutants lower than that in the other seasons. In autumn, air pollutants were transported by the northwest wind caused by the movement of high pressure over the Yellow Sea, while in winter air pollutants were influenced by northwest winds from continental highs. The amount of air pollutants in each season showed that high amount of pollutants were transported in winter due to the strong northwest wind. The in-flows were 3 to 8 times higher than those of the other seasons, and out-flows were about as twice as high. The amount of wet deposition in summer and autumn increased significantly compared to the amount in the other seasons due to the increase of rainfall. Source-receptor relationship analysis for sulfur showed that 70 to 91 precent of the total deposition came from the self-contribution by the Korean Peninsula. In winter, contribution from China was about 25 percent of the total deposition which was higher amount than any other season.

Keywords

Long-range transport;Weather pattern;Clustering analysis;Deposition;Source-receptor relationship

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