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タイトル: | Near-Surface Vertical Profiles of Urban Roadside NOx and Fine Particles |
著者: | Nakashima, Yoshihiro Jones, Charlotte E. Yamanobe, Wakana Kajii, Yoshizumi |
著者名の別形: | 梶井, 克純 |
キーワード: | Vertical concentration profile High density traffic road in urban area Fine particle |
発行日: | Oct-2014 |
出版者: | Taiwan Association for Aerosol Research |
誌名: | Aerosol and Air Quality Research |
巻: | 14 |
号: | 6 |
開始ページ: | 1763 |
終了ページ: | 1768 |
抄録: | This paper presents daytime vertical profiles of the NO[x] concentration, and the number concentration and size distribution of fine particles near a major road in urban Tokyo during spring 2011. No significant height dependence was observed in the NO[x] concentration, presumably due to rapid diffusion. In contrast, the number concentration of particles under 0.5 µm diameter demonstrated an exponential decrease with increasing height above ground level. Vertical profiles derived from this study differ from those presented in previous studies, however, these differences may potentially be explained by the different tailpipe positions of Japanese and US heavy vehicles, as well as the meteorological conditions. This study demonstrates that in Tokyo, the fine particle concentration at 0.5 m above ground level was about 2.9 times higher than that at 2.0 m. The higher fine particle concentration immediately above ground level implies that children may be at greater risk of experiencing pollutant-related respiratory symptoms than adults. |
著作権等: | Copyright © Taiwan Association for Aerosol Research. The final published version of this paper has been published in [Aerosol and Air Quality Research, 14: 1763–1768, 2014]. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/207652 |
DOI(出版社版): | 10.4209/aaqr.2013.08.0278 |
出現コレクション: | 学術雑誌掲載論文等 |
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