期刊
PARTICUOLOGY
卷 28, 期 -, 页码 114-120出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.partic.2015.09.005
关键词
Mineral dust; PM2.5 dust fraction; PM2.5 to PM10 ratio; Atmospheric mixing; Lidar; Depolarization ratio
资金
- Environment Research and Technology Development Fund of the Ministry of the Environment, Japan [5B-1202, 5-1502]
A simple method for estimating the contributions of mineral dust to PM2.5, PM10, or TSP is presented. The method is based on the assumption of external mixing of two types of particles with different PM2.5/PM10 ratios. The method was applied to local and transported dust events observed in Tsukuba, Japan, and was compared with collocated polarization lidar measurements. The method was then applied to three dust events that occurred in Oki, Rishiri, and Ochiishi, Japan, in 2012. The results showed that the method was useful for detecting mineral dust and for qualitatively describing the mixing of dust with anthropogenic aerosols. (C) 2015 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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