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J Environ Sci (China)

Title:		Air pollution characteristics and their relationship with emissions and meteorology in the Yangtze River Delta region during 2014-2016
Author(s):		Ma T; Duan F; He K; Qin Y; Tong D; Geng G; Liu X; Li H; Yang S; Ye S; Xu B; Zhang Q; Ma Y;
Address:		"State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, Beijing 100084, China. Electronic address: mat14@mails.tsinghua.edu.cn. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, Beijing 100084, China. Electronic address: duanfk@tsinghua.edu.cn. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, Beijing 100084, China. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, Beijing 100084, China; Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing 100084, China. National Satellite Meteorological Center, Beijing 100081, China. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China. Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing 100084, China"
Journal Title:		J Environ Sci (China)
Year:		2019
Volume:		20190312
Issue:
Page Number:		8 - 20
DOI:		10.1016/j.jes.2019.02.031
ISSN/ISBN:		1001-0742 (Print) 1001-0742 (Linking)
Abstract:		"With rapid economic growth and urbanization, the Yangtze River Delta (YRD) region in China has experienced serious air pollution challenges. In this study, we analyzed the air pollution characteristics and their relationship with emissions and meteorology in the YRD region during 2014-2016. In recent years, the concentrations of all air pollutants, except O(3), decreased. Spatially, the PM(2.5), PM(10), SO(2), and CO concentrations were higher in the northern YRD region, and NO(2) and O(3) were higher in the central YRD region. Based on the number of non-attainment days (i.e., days with air quality index greater than 100), PM(2.5) was the largest contributor to air pollution in the YRD region, followed by O(3), PM(10), and NO(2). However, particulate matter pollution has declined gradually, while O(3) pollution worsened. Meteorological conditions mainly influenced day-to-day variations in pollutant concentrations. PM(2.5) concentration was inversely related to wind speed, while O(3) concentration was positively correlated with temperature and negatively correlated with relative humidity. The air quality improvement in recent years was mainly attributed to emission reductions. During 2014-2016, PM(2.5), PM(10), SO(2), NO(x), CO, NH(3), and volatile organic compound (VOC) emissions in the YRD region were reduced by 26.3%, 29.2%, 32.4%, 8.1%, 15.9%, 4.5%, and 0.3%, respectively. Regional transport also contributed to the air pollution. During regional haze periods, pollutants from North China and East China aggravated the pollution in the YRD region. Our findings suggest that emission reduction and regional joint prevention and control helped to improve the air quality in the YRD region"
Keywords:		Air Pollutants/*analysis Air Pollution/*statistics & numerical data China *Environmental Monitoring *Meteorological Concepts Meteorology Ozone Particulate Matter/analysis Rivers Seasons Temperature Urbanization Air pollution Emission inventory Meteorologi;
Notes:		"MedlineMa, Tao Duan, Fengkui He, Kebin Qin, Yu Tong, Dan Geng, Guannan Liu, Xuyan Li, Hui Yang, Shuo Ye, Siqi Xu, Beiyao Zhang, Qiang Ma, Yongliang eng Netherlands 2019/06/22 J Environ Sci (China). 2019 Sep; 83:8-20. doi: 10.1016/j.jes.2019.02.031. Epub 2019 Mar 12"