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Optical Characteristics of Southeast Asia's Regional Aerosols and Their Sources
| Content Provider | Scilit |
|---|---|
| Author | Bridhikitti, Arika Overcamp, Thomas J. |
| Copyright Year | 2011 |
| Description | Journal: Journal of the Air & Waste Management Association The dominant optical characteristics of Southeast Asia (SEA)'s regional aerosols were determined from the cluster analysis of the 26 AERONET aerosol inversion products, including aerosol light scattering/absorption indicators and aerosol size/shape parameters retrieved from 2003 to 2007. The data sets were acquired from four stations: Bac Giang in Vietnam and Mukdahan, Pimai, and Silpakorn University in Thailand. The cluster analysis showed agreement among the aerosol optical characteristics, land cover/uses, season as the surrogate of the prevailing winds, and observations from the literature. The results of this study showed that during the northeast prevailing winds from mid-September to December, the high aerosol exposure events were most frequently observed over the upwind station and less often over the downwind stations. This aerosol exhibited a single scattering albedo (SSA) of approximately 0.95 (440 nm), a relatively low refractive index, and a larger fine-mode size, suggesting it had the characteristics of urban/industrial aerosols reported in the literature. These aerosol sources were upwind from Bac Giang, probably in eastern China. From January to April, the aerosol exhibited a lower SSA of approximately 0.90, a higher refractive index, and a smaller fine-mode size, suggesting biomass burning smoke reported in the literature. The SEA urban aerosol exhibited a mean SSA of approximately 0.90 (440 nm) or lower, and the coarse-mode aerosol, possibly road dust or soil dust, played a role from October to January when seasonal winds are strongest. The results from a canonical discriminant function analysis suggest that the dominant SEA aerosol clusters tended to be separated by a canonical function positively correlated with SSA, the fine-mode asymmetry factor, and the overall fine-mode size and negatively correlated with the refractive index. |
| Related Links | https://www.tandfonline.com/doi/pdf/10.3155/1047-3289.61.7.747?needAccess=true |
| Ending Page | 754 |
| Page Count | 8 |
| Starting Page | 747 |
| ISSN | 10962247 |
| e-ISSN | 21622906 |
| DOI | 10.3155/1047-3289.61.7.747 |
| Journal | Journal of the Air & Waste Management Association |
| Issue Number | 7 |
| Volume Number | 61 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2011-07-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of the Air & Waste Management Association Atmospheric Sciences |
| Content Type | Text |
| Subject | Atmospheric Science Pollution Waste Management and Disposal Management, Monitoring, Policy and Law |
