Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa75d5 |
Understanding the Southeast Asian haze | |
Karthik, K. R. G.1; Baikie, T.1; Dass, Mohan E. T.1; Huang, Y. Z.2; Guet, C.1 | |
2017-08-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:8页码:43474 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore |
英文摘要 | The Southeast Asian region had been subjected to a drastic reduction in air quality from the biomass burnings that occurred in 2013 and 2015. The smoke from the biomass burnings covered the entire region including Brunei, Indonesia, Malaysia, Singapore and Thailand, with haze particulate matter (PM) reducing the air quality to hazardous levels. Here we report a comprehensive size-composition-morphology characterization of the PM collected from an urban site in Singapore during the two haze events. The two haze events were a result of biomass burning and occurred in two different geographical source regions. We show the similarities and variations of particle size distribution during hazy and clear days during the two haze events. Sub-micron particles (<1 mu m) dominate (similar to 50%) the aerosols in the atmosphere during clear and hazy days. Using electron microscopy, we also categorize the PM, namely soot, organic-inorganic clusters and hybrid particles. The composition and morphology were similar in both the haze events. The majority of the PM is composed of carbon (similar to 51%) and other elements pertaining to the earth's crust. The complexity of the mixing state of the PM is highlighted and the role of the capture mode is addressed. We also present the morphological characterization of all the classified PM. The box counting method is used to determine the fractal dimensions of the PM, and the dimensionality varied for every classification from 1.79 to 1.88. We also report the complexities of particles and inconsistencies in the existing approaches to understand them. |
英文关键词 | Southeast Asian haze biomass burnings particulate matter electron microscopy fractal dimensions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407464500001 |
WOS关键词 | INDIVIDUAL AEROSOL-PARTICLES ; AFRICA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32057 |
专题 | 气候变化 |
作者单位 | 1.Energy Res Inst NTU ERI N, 1 CleanTech Loop,06-04, Singapore 637141, Singapore; 2.Nanyang Technol Univ, Sch Mat Sci & Engn, Block N4-1,Nanyang Ave, Singapore 639798, Singapore |
推荐引用方式 GB/T 7714 | Karthik, K. R. G.,Baikie, T.,Dass, Mohan E. T.,et al. Understanding the Southeast Asian haze[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(8):43474. |
APA | Karthik, K. R. G.,Baikie, T.,Dass, Mohan E. T.,Huang, Y. Z.,&Guet, C..(2017).Understanding the Southeast Asian haze.ENVIRONMENTAL RESEARCH LETTERS,12(8),43474. |
MLA | Karthik, K. R. G.,et al."Understanding the Southeast Asian haze".ENVIRONMENTAL RESEARCH LETTERS 12.8(2017):43474. |
条目包含的文件 | 条目无相关文件。 |
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