10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Implementation Effect and Countermeasures of the "Air Pollution Prevention and Control Action Plan"
WENKANG GAO, Guiqian Tang, Mengtian Cheng, Dongsheng Ji, Zirui Liu, Tao Song, Liang Li, Junke Zhang, Yuesi Wang, Inst. of Atmospheric Physics, Chinese Academy of Sciences
Abstract Number: 721 Working Group: Air Quality in Megacities: from Sources to Control
Abstract The National Council promulgated the "Air Pollution Prevention and Control Action Plan" ("action plan") in 12 September, 2013. To study the different regionals air pollution control effects in China after the "action plan", PM2.5 concentration was analyzed in 36 monitoring sites of the Campaign on atmospheric Aerosol Research network of China (CARE-China) between 2013 and 2016. To research the reason of change of PM2.5 concentration in different regions in China, the concentrations of SO2 and NO2 in 74 cities were analyzed, which was released by the China Ministry of Environmental Protection. The results show that the PM2.5 concentration was reduced by 9-35 μg/m3 in different regions in China. SO2 and NO2, the main precursors of particulate matters, decreased 37.1% and 6.3% in the ground level, respectively. However, the NO2 column density was decrease ∼20% significantly, indicating the strong emission reduction of elevated point sources. The observations in Beijing showed that the concentrations of PM1 and PM2.5 were decreased by 5.7 and 0.2 μg/m3, respectively. However, the concentration of PM1-2.5 increased 27.9% and NH4+ was the main contributor with 16.2% increasing in PM1-2.5. During implementation of SO2 and NOx emission reduction measures, the issue of fossil fuel combustion NH3 leak should be paid attention. Meanwhile, it should still be strengthened that the control of vehicle emissions on the ground.