ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 44 Issue 7 > 2018,44(7):921-928. DOI:10.7519/j.issn.10000526.2018.07.007 Prev Next
Analysis of Aerosol Absorption Properties in Beijing from 13 November to 19 December 2009
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The effects of traffic emission and heating in winter on the components of atmospheric aerosol were revealed by using the relation between the properties of aerosol and the aerosol absorption ngstrom exponent (AAE) as the indicator for the aerosol’s composition, based on a 37 d measurement campaign from 13 November to 19 December 2009 with the Aethalometer in the region of Beijing. The diurnal variation characteristics and the comparison analysis were studied on the 37 d average, clean, and foghaze conditions. The results showed that the AAE reached the minimum during traffic rushhours and increased at other times in the average and foghaze conditions. In clean condition, the AAE decreased gradually from nighttime to daytime, and an inflexion would turn with the advent of the traffic rushhours. The AAE was significantly higher in clean condition than in the two other conditions, and the difference became more significant at night. Combining the varied weather conditions, the paper demonstrated that significant emissions of brown carboncontaining aerosols in the region of Beijing in winter, especially during the night, and emissions of the fine particles during traffic rushhours, as well as the important impact on the components of aerosol in ambient atmosphere.
Keywords:
Project Supported:
Clc Number:
Mobile website
