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Volume 18, issue 19
Atmos. Chem. Phys., 18, 14095-14111, 2018
https://doi.org/10.5194/acp-18-14095-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 18, 14095-14111, 2018
https://doi.org/10.5194/acp-18-14095-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 04 Oct 2018

Research article | 04 Oct 2018

Trends in China's anthropogenic emissions since 2010 as the consequence of clean air actions

Bo Zheng1,a, Dan Tong2, Meng Li2, Fei Liu1, Chaopeng Hong2, Guannan Geng2, Haiyan Li1, Xin Li2, Liqun Peng1, Ji Qi1, Liu Yan2, Yuxuan Zhang2, Hongyan Zhao2, Yixuan Zheng2, Kebin He1,2, and Qiang Zhang2 Bo Zheng et al.
  • 1State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, People's Republic of China
  • 2Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China
  • apresent address: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, UMR8212, Gif-sur-Yvette, France

Abstract. To tackle the problem of severe air pollution, China has implemented active clean air policies in recent years. As a consequence, the emissions of major air pollutants have decreased and the air quality has substantially improved. Here, we quantified China's anthropogenic emission trends from 2010 to 2017 and identified the major driving forces of these trends by using a combination of bottom-up emission inventory and index decomposition analysis (IDA) approaches. The relative change rates of China's anthropogenic emissions during 2010–2017 are estimated as follows: −62% for SO2, −17% for NOx, +11% for nonmethane volatile organic compounds (NMVOCs), +1% for NH3, −27% for CO, −38% for PM10, −35% for PM2.5, −27% for BC, −35% for OC, and +16% for CO2. The IDA results suggest that emission control measures are the main drivers of this reduction, in which the pollution controls on power plants and industries are the most effective mitigation measures. The emission reduction rates markedly accelerated after the year 2013, confirming the effectiveness of China's Clean Air Action that was implemented since 2013. We estimated that during 2013–2017, China's anthropogenic emissions decreased by 59% for SO2, 21% for NOx, 23% for CO, 36% for PM10, 33% for PM2.5, 28% for BC, and 32% for OC. NMVOC emissions increased and NH3 emissions remained stable during 2010–2017, representing the absence of effective mitigation measures for NMVOCs and NH3 in current policies. The relative contributions of different sectors to emissions have significantly changed after several years' implementation of clean air policies, indicating that it is paramount to introduce new policies to enable further emission reductions in the future.

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To tackle the problem of severe air pollution, China has implemented active clean air policies in recent years. We quantified China’s anthropogenic emissions during 2010–2017 and identified the major driving forces of these trends by using a combination of bottom-up emission inventory and index decomposition analysis (IDA) approaches. The major air pollutants have reduced their emissions by 17–62 % during 2010–2017. The IDA results suggest that emission control measures are the main drivers.
To tackle the problem of severe air pollution, China has implemented active clean air policies...
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