Press Conference on MEP’s Stepped-Up Action for Comprehensive Air Pollution Prevention and Control in the Autumn and Winter of the Beijing–Tianjin–Hebei Region and Its Periphery

2019 ◽  
pp. 277-296
Author(s):  
Keyword(s):  
Air Pollution ◽  
Prevention And Control ◽  
Pollution Prevention ◽  
Press Conference ◽  
Pollution Prevention And Control ◽  
Autumn And Winter ◽  
And Control

scholarly journals Long-term trends and drivers of aerosol pH in eastern China

2021 ◽  
Author(s):  
Min Zhou ◽  
Guangjie Zheng ◽  
Hongli Wang ◽  
Liping Qiao ◽  
Shuhui Zhu ◽  
...  
Keyword(s):  
Air Pollution ◽  
Prevention And Control ◽  
Action Plan ◽  
Health Effect ◽  
Eastern China ◽  
Pollution Prevention ◽  
Control Action ◽  
Haze Pollution ◽  
Pollution Prevention And Control ◽  
And Control

Abstract. Aerosol acidity plays a key role in regulating the chemistry and toxicity of atmospheric aerosol particles. The trend of aerosol pH and its drivers are crucial in understanding the multiphase formation pathways of aerosols. Here, we reported the first trend analysis of aerosol pH from 2011 to 2019 in eastern China. The implementation of the Air Pollution Prevention and Control Action Plan leads to −35.8 %, −37.6 %, −9.6 %, −81.0 % and 1.2 % changes of PM2.5, SO42−, NHx, NVCs and NO3− in YRD during this period. Different from the fast changes of aerosol compositions due to the implementation of the Air Pollution Prevention and Control Action Plan, aerosol pH shows a moderate change of −0.24 unit over the 9 years. Besides the multiphase buffer effect, the opposite effects of SO42− and non-volatile cations changes play key roles in determining the moderate pH trend, contributing to a change of +0.38 and −0.35 unit, respectively. Seasonal variations in aerosol pH were mainly driven by the temperature, while the diurnal variations were driven by both temperature and relative humidity. In the future, SO2, NOx and NH3 emissions are expected to be further reduced by 86.9 %, 74.9 % and 41.7 % in 2050 according to the best health effect pollution control scenario (SSP1-26-BHE). The corresponding aerosol pH in eastern China is estimated to increase by ~0.9, resulting in 8 % more NO3− and 35 % less NH4+ partitioning/formation in the aerosol phase, which suggests a largely reduced benefit of NH3 and NOx emission control in mitigating haze pollution in eastern China.

Cost-benefit analysis of China’s Action Plan for Air Pollution Prevention and Control

2019 ◽  
Vol 6 (4) ◽  
pp. 524-537 ◽  
Author(s):  
Jing Zhang ◽  
Hongqiang Jiang ◽  
Wei Zhang ◽  
Guoxia Ma ◽  
Yanchao Wang ◽  
...  
Keyword(s):  
Air Pollution ◽  
Prevention And Control ◽  
Cost Benefit Analysis ◽  
Action Plan ◽  
Pollution Prevention ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Pollution Prevention And Control ◽  
And Control

scholarly journals Cloud Model based Fuzzy Comprehensive Evaluation Method for Effect Assessment of Beijing-Tianjin-Hebei Cooperative Air Pollution Supervision Mode

2018 ◽  
Vol 4 (2) ◽  
pp. 43-55
Author(s):  
Yunna Wu ◽  
Ting Zhang ◽  
Jing Wang ◽  
Ruhang Xu ◽  
Yuanxin Liu ◽  
...  
Keyword(s):  
Air Pollution ◽  
Prevention And Control ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Cloud Model ◽  
Pollution Prevention ◽  
Fuzzy Comprehensive Evaluation ◽  
Decision Makers ◽  
Pollution Prevention And Control ◽  
And Control

In order to cope with air pollution, China has formulated Beijing-Tianjin-Hebei cooperative supervision mechanism on air pollution prevention and control. Nevertheless, after several years’ effort, the air quality has improved significantly but far from reaching people’s needs. To improve the supervision strategies for meeting a better supervision and treatment effect, this paper will evaluate the effect of the cooperative supervision on air pollution and control in Beijing-Tianjin-Hebei and give several advices on the improvement of existing supervision method through results analyzation. Firstly, a comprehensive evaluation criteria system is established. Then a novel method of determining weight is firstly proposed in this paper, -fuzzy measure and AHP are used for determining weights which can not only consider the correlation among criteria but also take care of the will of the decision-makers. Finally, we obtain the evaluation ranking results by Fuzzy comprehensive evaluation combined with Cloud model and several advice is proposed. In general, the model can provide reference for monitoring and evaluating the effect of supervision on air pollution prevention and control in other regions and the results analysis provide a great reference to the decision makers to optimize the cooperative supervision in Beijing-Tianjin-Hebei.

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