| Item type |
琉球大学リポジトリ登録用アイテムタイプ(1) |
| 公開日 |
2022-07-15 |
| タイトル |
|
|
タイトル |
Contributions of Long-Range Transported and Locally Emitted Nitrate in Size-Segregated Aerosols in Japan at Kyushu and Okinawa |
|
言語 |
en |
| 作成者 |
Tatsuta, Shiori
Shimada, Kojiro
Chan, K. Chak
Kim, Pyo Yong
Lin, Neng-Huei
Takami, Akinori
Hatakeyama, Shiro
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© Taiwan Association for Aerosol Research |
| 権利情報 |
|
|
言語 |
en |
|
権利情報Resource |
https://creativecommons.org/licenses/by/4.0/ |
|
権利情報 |
the Creative Commons Attribution 4.0 License (CC BY 4.0) |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Nitrate |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Transport of fine nitrate |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
East Asia |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Contribution of long-range transport and local air pollution |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
We observed the size distributions of mass concentration, ionic composition, and trace metal concentration in aerosols collected at an urban site in Kumamoto Prefecture (KM) and a rural site at Cape Hedo in Okinawa Prefecture (HD) between 2012 and 2015. To evaluate the contribution of transboundary nitrate and locally emitted nitrate in the aerosols at Kumamoto, we distinguished between days of transboundary air pollution from East Asia and days of local air pollution on the basis of a threshold for Pb concentration and the ratio Pb (in 0.5 < projected area diameter (Dp) < 1.0 µm)/Cu (in 2.5 < Dp < 10 µm). Fine nitrate (particulate NH_4NO_3) did not arrive at HD from the Asian continent even under long-range transport conditions. Fine nitrate emitted in Kumamoto and its vicinity also was not transported to HD, even in an air mass that passed over KM and reached HD within one day. Almost all fine nitrate was converted to coarse nitrate during transport by dissociation of fine nitrate and adsorption of HNO_3 on larger aerosol particles. Transboundary nitrate existed largely in the particle size range of 0.5 < Dp < 10 µm, and the contribution of transboundary nitrate in the particle size range of 0.1 < Dp < 0.5 µm was about 20% even under long-range transport conditions. The contribution of transboundary nitrate in particles with Dp < 2.5 µm at KM was approximately 50%, 50%, and 80% in spring, autumn, and winter, respectively. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Taiwan Association for Aerosol Research |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.4209/aaqr.2016.12.0587 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
1680-8584 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
2071-1409 |
| 収録物名 |
|
|
収録物名 |
Aerosol and Air Quality Research |
|
言語 |
en |
| 書誌情報 |
巻 17,
号 12,
p. 3119-3127,
発行日 2017-12
|
aaqr-16-12-lrt-0587.pdf (548 KB)
