DOI: 10.1002/2018JD028288
Scopus记录号: 2-s2.0-85044412875
论文题名: Scattering Matrix for Typical Urban Anthropogenic Origin Cement Dust and Discrimination of Representative Atmospheric Particulates
作者: Liu J. ; Zhang Y. ; Zhang Q. ; Wang J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 6 起始页码: 3159
结束页码: 3174
语种: 英语
英文关键词: Aerosol Discrimination
; Atmospheric particulate
; Cement Dust
; Mineral Dust
; Scattering Matrix
Scopus关键词: aerosol
; aerosol composition
; aerosol property
; matrix
; mineral dust
; particle size
; particulate matter
; radiative transfer
; remote sensing
; size distribution
; urban area
英文摘要: The complete scattering matrix for cement dust was measured as a function of scattering angle from 5° to 160° at a wavelength of 532 nm, as a representative of mineral dust of anthropogenic origin in urban areas. Other related characteristics of cement dust, such as particle size distribution, chemical composition, refractive index, and micromorphology, were also analyzed. For this objective, a newly improved apparatus was built and calibrated using water droplets. Measurements of water droplets were in good agreement with Lorenz-Mie calculations. To facilitate the direct applicability of measurements for cement dust in radiative transfer calculation, the synthetic scattering matrix was computed and defined over the full scattering angle range from 0° to 180°. The scattering matrices for cement dust and typical natural mineral dusts were found to be similar in trends and angular behaviors. Angular distributions of all matrix elements were confined to rather limited domains. To promote the application of light-scattering matrix in atmospheric observation and remote sensing, discrimination methods for various atmospheric particulates (cement dust, soot, smolder smoke, and water droplets) based on the angular distributions of their scattering matrix elements are discussed. The ratio −F12/F11 proved to be the most effective discrimination method when a single matrix element is employed; aerosol identification can be achieved based on −F12/F11 values at 90° and 160°. Meanwhile, the combinations of −F12/F11 with F22/F11 (or (F11 − F22)/(F11 + F22)) or −F12/F11 with F44/F11 at 160° can be used when multiple matrix elements at the same scattering angle are selected. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114248
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, China
Recommended Citation:
Liu J.,Zhang Y.,Zhang Q.,et al. Scattering Matrix for Typical Urban Anthropogenic Origin Cement Dust and Discrimination of Representative Atmospheric Particulates[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(6)