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Observations of particle extinction, PM2.5 mass concentration profile and flux in north China based on mobile lidar technique
Lv, Lihui1,2; Liu, Wenqing1,2; Zhang, Tianshu1; Chen, Zhenyi1; Dong, Yunsheng1; Fan, Guangqiang1; Xiang, Yan1,2; Yao, Yawei3; Yang, Nan3; Chu, Baolin3; Teng, Man3; Shu, Xiaowen4
2017-09-01
发表期刊ATMOSPHERIC ENVIRONMENT
卷号164页码:360-369
摘要Fine particle with diameter <2.5 mu m (PM2.5) have important direct and indirect effects on human life and activities. However, the studies of fine particle were limited by the lack of monitoring data obtained with multiple fixed site sampling strategies. Mobile monitoring has provided a means for broad measurement of fine particles. In this research, the potential use of mobile lidar to map the distribution and transport of fine particles was discussed. The spatial and temporal distributions of particle extinction, PM2.5 mass concentration and regional transport flux of fine particle in the planetary boundary layer were investigated with the use of vehicle-based mobile lidar and wind field data from north China. Case studies under different pollution levels in Beijing were presented to evaluate the contribution of regional transport. A vehicle-based mobile lidar system was used to obtain the spatial and temporal distributions of particle extinction in the measurement route. Fixed point lidar and a particulate matter sampler were operated next to each other at the University of Chinese Academy of Science (UCAS) in Beijing to determine the relationship between the particle extinction coefficient and PM2.5 mass concentration. The correlation coefficient (R-2) between the particle extinction coefficient and PM2.5 mass concentration was found to be over 0.8 when relative humidity (RH) was less than 90%. A mesoscale meteorological model, the Weather Research and Forecasting (WRF) model, was used to obtain profiles of the horizontal wind speed, wind direction and relative humidity. A vehicle-based mobile lidar technique was applied to estimate transport flux based on the PM2.5 profile and vertical profile of wind data. This method was applicable when hygroscopic growth can be neglected (relatively humidity<90%). Southwest was found to be the main pathway of Beijing during the experiments. (C) 2017 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Vehicle-based Mobile Lidar Fine Particle Pm2.5 Profile Flux
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者Major Research Plan of the National Natural Science Foundation of China(91544232) ; Major Research Plan of the National Natural Science Foundation of China(91544232) ; National Natural Science Foundation of China(41305126 ; National Natural Science Foundation of China(41305126 ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; 41605020) ; 41605020) ; Major Research Plan of the National Natural Science Foundation of China(91544232) ; Major Research Plan of the National Natural Science Foundation of China(91544232) ; National Natural Science Foundation of China(41305126 ; National Natural Science Foundation of China(41305126 ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; 41605020) ; 41605020)
DOI10.1016/j.atmosenv.2017.06.022
关键词[WOS]PARTICULATE MATTER ; AIR-POLLUTION ; APEC
收录类别SCI
语种英语
资助者Major Research Plan of the National Natural Science Foundation of China(91544232) ; Major Research Plan of the National Natural Science Foundation of China(91544232) ; National Natural Science Foundation of China(41305126 ; National Natural Science Foundation of China(41305126 ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; 41605020) ; 41605020) ; Major Research Plan of the National Natural Science Foundation of China(91544232) ; Major Research Plan of the National Natural Science Foundation of China(91544232) ; National Natural Science Foundation of China(41305126 ; National Natural Science Foundation of China(41305126 ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Key Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2014CB447900) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; Chinese National Programs for High Technology Research and Development (863 Program)(2014AA06A512) ; 41605020) ; 41605020)
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000405765500031
引用统计
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33548
专题中科院安徽光学精密机械研究所
作者单位1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
3.State Environm Protect Key Lab Qual Control Envir, Beijing 100012, Peoples R China
4.Army Air Force Mil Representat Off Beijing, Beijing 100086, Peoples R China
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Lv, Lihui,Liu, Wenqing,Zhang, Tianshu,et al. Observations of particle extinction, PM2.5 mass concentration profile and flux in north China based on mobile lidar technique[J]. ATMOSPHERIC ENVIRONMENT,2017,164:360-369.
APA Lv, Lihui.,Liu, Wenqing.,Zhang, Tianshu.,Chen, Zhenyi.,Dong, Yunsheng.,...&Shu, Xiaowen.(2017).Observations of particle extinction, PM2.5 mass concentration profile and flux in north China based on mobile lidar technique.ATMOSPHERIC ENVIRONMENT,164,360-369.
MLA Lv, Lihui,et al."Observations of particle extinction, PM2.5 mass concentration profile and flux in north China based on mobile lidar technique".ATMOSPHERIC ENVIRONMENT 164(2017):360-369.
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