Local formation of sulfates contributes to the urban haze with regional transport origin
- 주제(키워드) East Asian haze , regional transport , gas-particle partitioning of semivolatile inorganic species
- 주제(기타) Environmental Sciences
- 주제(기타) Meteorology & Atmospheric Sciences
- 설명문(일반) [Lim, Yong Bin; Kim, Yong Pyo; Jin, Hyun Cher] Ewha Womans Univ, Dept Chem Engn & Mat Sci, Seoul 03760, South Korea; [Lim, Yong Bin; Seo, Jihoon; Kim, Jin Young] Korea Inst Sci & Technol, Environm Hlth & Welf Res Ctr, Seoul 02792, South Korea; [Seo, Jihoon] Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 08826, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- OA유형 gold
- 발행기관 IOP PUBLISHING LTD
- 발행년도 2020
- URI http://www.dcollection.net/handler/ewha/000000174586
- 본문언어 영어
- Published As http://dx.doi.org/10.1088/1748-9326/ab83aa
초록/요약
Urban particle pollution is affected by not only the emissions of pollutants and secondary aerosol formation through atmospheric chemistry on a local scale, but also the regional transport of particles and precursor gases from highly polluted upwind areas. However, this regional impact on urban particle formation is not well understood. Wintertime haze events occur at Seoul, Korea through the combination of regional transport from China and local formation at Seoul. We perform thermodynamic model simulations based on inorganic component measurements of haze particles collected at Seoul and Deokjeok Island (upwind background). Results suggest that in the downwind area (Seoul) the local formation of sulfates increases the mass concentrations of transported particles through the gas-particle partitioning of semivolatile nitric acid (HNO3) and ammonia (NH3). Therefore, this synergetic effect of the local sulfate formation on urban haze with regional transport must be considered in implementing effective particle reduction controls for urban sustainability.
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