|
|
|
| 论文编号: |
42 |
| 论文题目: |
Regional transport of anthropogenic pollution and dust aerosols in spring to Tianjin - A coastal megacity in China |
| 英文论文题目: |
Regional transport of anthropogenic pollution and dust aerosols in spring to Tianjin - A coastal megacity in China |
| 第一作者: |
Su, XL |
| 英文第一作者: |
|
| 联系作者: |
Cao Junji |
| 英文联系作者: |
Cao Junji |
| 外单位作者单位: |
|
| 英文外单位作者单位: |
|
| 发表年度: |
2017 |
| 卷: |
584 |
| 期: |
|
| 页码: |
381-392 |
| 摘要: |
|
| 英文摘要: |
Simultaneous measurements of columnar aerosol microphysical and optical properties, as well as PM2.5 chemical compositions, were made during two types of spring pollution episodes in Tianjin, a Coastal megacity of China. The events were investigated using field observations, satellite data, model simulations, and meteorological fields. The lower Angstrom Exponent and the higher aerosol optical depth on 29 March, compared with the earlier event on 26 March, implied a dominance of coarse mode particles this was consistent with the differences in volume-size distributions. Based on the single scattering spectra, the dominant absorber (at blue wavelength) changed from black carbon during less polluted days to brown carbon on 26 March and dust on 29 March. The concentrations of major PM2.5 species for these two episodes also differed, with the earlier event enriched in pollution-derived substances and the later with mineral dust elements. The formation mechanisms of these two pollution episodes were also examined. The 26 March episode was attributed to the accumulation of both local emissions and anthropogenic pollutants transported from the southwest of Tianjin under the control of high pressure system. While the high aerosol loading on 29 March was caused by the mixing of transported dust from northwest source region with local urban pollution. The mixing of transported anthropogenic pollutants and dust with local emissions demonstrated the complexity of springtime pollution in Tianjin. The synergy of multi-scale observations showed excellent potential for air pollution study. |
| 刊物名称: |
SCIENCE OF THE TOTAL ENVIRONMENT |
| 英文刊物名称: |
SCIENCE OF THE TOTAL ENVIRONMENT |
| 论文全文: |
|
| 英文论文全文: |
|
| 全文链接: |
http://www.sciencedirect.com/science/article/pii/S0048969717300165 |
| 其它备注: |
|
| 英文其它备注: |
|
| 学科: |
|
| 英文学科: |
|
| 影响因子: |
|
| 第一作者所在部门: |
|
| 英文第一作者所在部门: |
|
| 论文出处: |
|
| 英文论文出处: |
|
| 论文类别: |
|
| 英文论文类别: |
|
| 参与作者: |
|
| 英文参与作者: |
|
|
