The impact of power plant emission on air pollution during winter over Yangtze River Delta
SHA Tong, MA Xiao-yan, WANG Jian-ying, JIA Hai-ling, HU Ya-nan, TIAN Rong, GUAN Qi-kun, LI Ruo-lin
Key Laboratory of Meteorological Disaster, Ministry of Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044, China
The characteristics of emissions from power plant over Yangtze River Delta were analyzed, and major air pollutants in winter and their impact on air quality were then discussed based on WRF-Chem simulation. The results showed that the annual emissions of major air pollutants from power plant over Yangtze River delta were 826.8Gg, 1475.6Gg and 137.3Gg in 2010 for SO2, NOx and PM2.5, respectively, accounting for 34%, 38% and 14% of total anthropogenic emissions. The high concentrations of major air pollutants (SO2, NO2, PM2.5) were distributed in the city cluster of Nanjing-Shanghai and Hangzhou-Ningbo. The spatial distribution of power plant contribution from SO2 was consistent with the emissions of SO2, however, the high contributions of NO2 and PM2.5, were mainly distributed on the border of Anhui-Zhejiang-Jiangxi and eastern coast of Zhejiang province. Compared with SO2 and NO2, the contributions to PM2.5 from power plant were relatively low, i.e. normally below 20μg/m3 in most regions (15%). The contributions of power plant emissions to the simulated PM2.5 and SO2 during polluted period (6.9%, 34.2%) were higher than clean period (4.9%, 20.7%), while, there were no significant differences for NO2 between polluted and clean period, with the magnitudes as 10μg/m3. The conditions of low temperature, weak wind speed, and low boundary layer height in winter were not favorable to pollutant diffusion, leading to heavy pollution events.
沙桐, 马晓燕, 王健颖, 贾海灵, 胡亚男, 田蓉, 管奇坤, 李若琳. 长江三角洲冬季电厂排放对大气污染的影响[J]. 中国环境科学, 2018, 38(9): 3288-3297.
SHA Tong, MA Xiao-yan, WANG Jian-ying, JIA Hai-ling, HU Ya-nan, TIAN Rong, GUAN Qi-kun, LI Ruo-lin. The impact of power plant emission on air pollution during winter over Yangtze River Delta. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(9): 3288-3297.
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