Vertical Distribution Characteristics of PM2.5 Observed by a Mobile Vehicle Lidar in Tianjin, China in 2016

HFCAS OpenIR

	Vertical Distribution Characteristics of PM2.5 Observed by a Mobile Vehicle Lidar in Tianjin, China in 2016
其他题名	Vertical Distribution Characteristics of PM2.5 Observed by a Mobile Vehicle Lidar in Tianjin, China in 2016
	Lyu Lihui 1; Dong Yunsheng1 ; Zhang Tianshu1 ; Liu Cheng 1; Liu Wenqing1 ; Xie Zhouqing 1; Xiang Yan 1; Zhang Yi1 ; Chen Zhenyi1 ; Fan Guangqiang 1; Zhang Leibo 2; Liu Yang 1; Shi Yuchen 1; Shu Xiaowen 3
	2018
发表期刊	气象学报：英文版
ISSN	2095-6037
摘要	We present mobile vehicle lidar observations in Tianjin, China during the spring, summer, and winter of 2016. Mobile observations were carried out along the city border road of Tianjin to obtain the vertical distribution characteristics of PM2.5. Hygroscopic growth was not considered since relative humidity was less than 60% during the observation experiments. PM2.5 profile was obtained with the linear regression equation between the particle extinction coefficient and PM2.5 mass concentration. In spring, the vertical distribution of PM2.5 exhibited a hierarchical structure. In addition to a layer of particles that gathered near the ground, a portion of particles floated at 0.6–2.5-km height. In summer and winter, the fine particles basically gathered below 1 km near the ground. In spring and summer, the concentration of fine particles in the south was higher than that in the north because of the influence of south wind. In winter, the distribution of fine particles was opposite to that measured during spring and summer. High concentrations of PM2.5 were observed in the rural areas of North Tianjin with a maximum of 350 μg m–3 on 13 December2016. It is shown that industrial and ship emissions in spring and summer and coal combustion in winter were the major sources of fine particles that polluted Tianjin. The results provide insights into the mechanisms of haze formation and the effects of meteorological conditions during haze–fog pollution episodes in the Tianjin area.
其他摘要	We present mobile vehicle lidar observations in Tianjin, China during the spring, summer, and winter of 2016. Mobile observations were carried out along the city border road of Tianjin to obtain the vertical distribution characteristics of PM_(2.5). Hygroscopic growth was not considered since relative humidity was less than 60% during the observation experiments. PM_(2.5) profile was obtained with the linear regression equation between the particle extinction coefficient and PM_(2.5) mass concentration. In spring, the vertical distribution of PM_(2.5) exhibited a hierarchical structure. In addition to a layer of particles that gathered near the ground, a portion of particles floated at 0.6–2.5-km height. In summer and winter, the fine particles basically gathered below 1 km near the ground. In spring and summer, the concentration of fine particles in the south was higher than that in the north because of the influence of south wind. In winter, the distribution of fine particles was opposite to that measured during spring and summer. High concentrations of PM_(2.5) were observed in the rural areas of North Tianjin with a maximum of 350 μg m~(–3) on 13 December 2016. It is shown that industrial and ship emissions in spring and summer and coal combustion in winter were the major sources of fine particles that polluted Tianjin. The results provide insights into the mechanisms of haze formation and the effects of meteorological conditions during haze–fog pollution episodes in the Tianjin area.
关键词	mobile vehicle lidar vertical concentration profile fine particle
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6231041
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/49642
专题	中国科学院合肥物质科学研究院
作者单位	1.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 2.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 3.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 4.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 5.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 6.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 7.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 8.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 9.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 10.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 11.Tianjin Academy of Environmental Sciences 12.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 13.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences 14.The Air Force Military Representative's Office in Beijing
第一作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Lyu Lihui,Dong Yunsheng,Zhang Tianshu,et al. Vertical Distribution Characteristics of PM2.5 Observed by a Mobile Vehicle Lidar in Tianjin, China in 2016[J]. 气象学报：英文版,2018,000.
APA	Lyu Lihui.,Dong Yunsheng.,Zhang Tianshu.,Liu Cheng.,Liu Wenqing.,...&Shu Xiaowen.(2018).Vertical Distribution Characteristics of PM2.5 Observed by a Mobile Vehicle Lidar in Tianjin, China in 2016.气象学报：英文版,000.
MLA	Lyu Lihui,et al."Vertical Distribution Characteristics of PM2.5 Observed by a Mobile Vehicle Lidar in Tianjin, China in 2016".气象学报：英文版 000(2018).