Size distribution of PM20 observed to the north of the Tibetan Plateau
文献类型：期刊论文
| 作者 | Zhou, CL; Yang, F; Huo, W; Mamtimn, AL; Yang, XH |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 18期号:2页码:367-376 |
| 关键词 | Dust-day Clear-day Friction velocity Field Urban Coefficient variation |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-020-6086-3 |
| 英文摘要 | The size distribution of airborne dust particles is an important parameter in the measurement of dust emissions due to wind erosion, and a quantitative and accurate description is necessary. Observations regarding the size distribution of airborne dust particles are currently lacking in Tibetan Plateau (TP). This study aims to obtain a dust particle size distribution and compare the difference in spatial distribution at a field site (FS) and two urban observation sites (Minfeng and Hetian), in the north of the TP, under the condition of the dust-days and clear-days. The observation data was collected from 5 July to 4 August, 2019. The mass concentration of dust (PM20) was measured with a 10-stage quartz crystal microbalance cascade impactor. The results suggested that 91.9% of the particles were less than 1.4 mu m on clear-days, and particles of d >= 1.4 mu m increased to 27.2% with the occurrence of the dust events. More than 80% of the airborne dust particles were less than 1.4 mu m for each friction velocity. The proportion of d < 0.7 mu m was the greatest at 3.0 m (above the surface, similarly hereinafter) on dust-days, while the proportion of d > 0.7 mu m was the greatest at 0.5 m on clear-days. During urban observation, with the occurrence of dust events, the concentration of a particle size greater than 2.5 mu m increased most significantly in Minfeng, while the concentration of a particle size less than 0.7 mu m increased most significantly in Hetian. Moreover, the proportion of particles with d < 0.7 mu m had the smallest difference, while the proportion of particles with d > 1.4 mu m had the most obvious difference among these three sites. |
| 语种 | 英语 |
| WOS记录号 | WOS:000608965600002 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/57225]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2021_Vol18 No.2 |
| 推荐引用方式 GB/T 7714 | Zhou, CL,Yang, F,Huo, W,et al. Size distribution of PM20 observed to the north of the Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2021,18(2):367-376. |
| APA | Zhou, CL,Yang, F,Huo, W,Mamtimn, AL,&Yang, XH.(2021).Size distribution of PM20 observed to the north of the Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,18(2),367-376. |
| MLA | Zhou, CL,et al."Size distribution of PM20 observed to the north of the Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 18.2(2021):367-376. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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