Factors regulating the distribution of O3 and NOx at two mountainous sites in Seoul, Korea
作者： Hang Thi Nguyen , Eilhann E. Kwon , Ki-Hyun Kim , Sudhir Kumar Pandey , Scott Chambers
DOI: 10.1016/J.APR.2016.10.003
关键词:
摘要: Abstract The concentrations of ozone (O3) and nitrogen oxides (NOx) were measured at two mountainous sites in Buk-Han (BH) Gwan-Ak (GA) a reference site Gwang-Jin (GJ), all Seoul, South Korea, over four-year period (2010–2013). mean concentration (ppb) NOx was comparable the (22.9 ± 20.7 20.9 ± 16.9 (GA)) but about half GJ (47.8 ± 36.4). In contrast, value for O3 three exhibited reversed pattern such as 40.2 ± 19.7 at GA, 28.6 ± 15.4 at BH, 21.8 ± 18.3 GJ. higher winter/fall relative to summer/spring sites. Like clear distinctions observed from spatial distribution patterns, seasonal trends conrasted sharply between O3. Results correlation analysis suggested that significantly affected by meteorological parameters (e.g., TEMP, UV, solar radiation). According back trajectory analysis, highest levels both caused air masses passing marine areas, while effects precursors on attributed originating China and/or mainland (S. Korea).
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