Effects of the emergency control measures in Beijing on air quality improvement

Tian, Jingyu; Cai, Tianqi; Shang, Jing; Schauer, James J.; Yang, Shujian; Zhang, Lijia; Zhang, Yuanxun

doi:10.1016/j.apr.2018.10.005

Cited by 9 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 a) and 17 μg/m 3 for PM 2.5 ( Fig. 2 b) was observed between the 2015–2019 average and 2020, reflecting the effects of air clean control policies in recent years and the influences of the COVID-19 shut down measures in 2020 ( Venter et al, 2020 ; de Foy et al, 2016 ; Baumgartner et al, 2019 ; Shang et al, 2018 ; Tian et al, 2019 ; Zhang et al, 2016a ). It exhibited high seasonal variability with the maximum occurring in the winter and the minimum occurring in the summer.…”

Section: Resultsmentioning

confidence: 89%

Quantitative estimation of meteorological impacts and the COVID-19 lockdown reductions on NO2 and PM2.5 over the Beijing area using Generalized Additive Models (GAM)

Hua

Zhang

Foy

et al. 2021

Journal of Environmental Management

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 89%

Quantitative estimation of meteorological impacts and the COVID-19 lockdown reductions on NO2 and PM2.5 over the Beijing area using Generalized Additive Models (GAM)

Hua

Zhang

Foy

et al. 2021

Journal of Environmental Management

Self Cite

View full text Add to dashboard Cite

“…Severe air pollution has existed in Beijing since the 1990s. Taking advantage of the opportunity of hosting a "2008 Olympics Games", the government developed a comprehensive plan to control air pollution and established 16 stages of atmospheric pollution control measures [1][2][3][4]. The ambient concentration of PM 10 had decreased, and the air quality had been improved in a certain extent [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Environmental Effective Assessment of Control Measures Implemented by Clean Air Action Plan (2013–2017) in Beijing, China

et al. 2020

View full text Add to dashboard Cite

The Beijing government initiated the Clean Air Action Plan (CAAP) in 2013. Through a series of actions to control air pollution, the emissions of major atmospheric pollutants are reduced to improve urban air quality. In order to evaluate the effectiveness of control measures taken to mitigate atmospheric pollution, we investigated and analyzed the implementation of the CAAP in Beijing from 2013 to 2017, estimating the corresponding reduction in emissions of major air pollutants. The contribution of different control measures to the improvement of air quality was quantified and the experiences of managing air pollution were summarized, which provided references for the continuous improvement of air quality in Beijing and the surrounding areas. The results showed that the emission of SO 2 , NO X , PM 10 , PM 2.5 , and VOCs from air pollution source have been decreased by 119,924, 116,091, 116,810, 46,652, and 97,267 tons after the implementation of the CAAP. The sum of these five air pollutants emissions have been reduced by 39% in 2017 compared with 2013, the largest decrease in SO 2 emissions was 87%, which was related to the vigorous control on coal-fired combustion. The control measure with the greatest contribution to decreasing the ambient PM 2.5 concentration was the clean energy transformation of coal-fired power plants, which contributed 27% of the total reduced concentration and 6.1 µg/m 3 of the average PM 2.5 concentration reduction in Beijing. Clean Residential coal use also significantly decreased the PM 2.5 concentration by 5.4 µg/m 3 , which was 23% of the total reduction. In addition, the industrial restructuring and the management of automotive vehicle use and dust could also contribute to efficiently reducing the PM 2.5 concentration by 4.0, 3.2, and 2.3 µg/m 3 , or 17%, 14%, and 10% of the total reduction, respectively. Due to the implementation of control measures of Clean Air Action Plan, the energy and industrial structure of Beijing have been adjusted and optimized, leading to the reduction of pollutant emissions, which is the secret of urban long-term air quality improvement.

show abstract

“…1(b) and (c), the levels of chemical compositions in PM 10 were various in four seasons, which was associted with different meteorological conditions (temperature, relattive humidity, wind speed and direction, etc. ), the intensity of emission sources, as well as pollution transportation [3,15,16]. The total measurement ions contributed for 30.24-45.08% to PM 10 in four seasons.…”

Section: Seasonal Variationsmentioning

confidence: 97%

Seasonal variations of water-soluble ions in PM₁₀ at a WMO/GAW station in the Yangtze River Delta, China

et al. 2020

View full text Add to dashboard Cite

In order to understand the seasonal levels, formation mechanism and atmospheric chemical behaviours of water-soluble ions of PM10 in the Yangtze River Delta (YRD) region, aerosol samples were collected from January 2nd to December 28th, 2017 at a WMO/GAW regional background station in Lin’an. The concentrations of PM mass and nine water-soluble inorganic ions were obtained. The annual average concentration of PM10 was 59.9±33.9 μg m−3, lower than those reported in previous studies, indicating air quality of YRD region was improved. Nine water-soluble inorganic ions was accounted for 30.2-45.1% of the total PM mass, while ammonium (NH4+), sulfate (SO42+), as well as nitrate (NO3-) were the major ions which contributed 86.3% to total ions. The NO3- concentration was lowest in summer but highest in winter, suggesting it was likely influenced by thermodynamics. The levels of SO42- in spring and winter were related to photochemical reaction and regional transportation. Except for the SNA, Ca2+ was highest in four seasons likely due to sand storm and road fugitive dust. The annual mean ratio of [NO3-]/[SO42-] was nearly to 1, indicating mobile and stationary sources were equally important in Lin’an. The mean nitrogen oxidation ratio (NOR) and sulfur oxidation ratio (SOR) were 0.22±0.13 and 0.41±0.13, respectively, suggesting secondary formation was significant in the atmosphere at the background station of YRD region.

show abstract

Effects of the emergency control measures in Beijing on air quality improvement

Cited by 9 publications

References 36 publications

Quantitative estimation of meteorological impacts and the COVID-19 lockdown reductions on NO2 and PM2.5 over the Beijing area using Generalized Additive Models (GAM)

Quantitative estimation of meteorological impacts and the COVID-19 lockdown reductions on NO2 and PM2.5 over the Beijing area using Generalized Additive Models (GAM)

Environmental Effective Assessment of Control Measures Implemented by Clean Air Action Plan (2013–2017) in Beijing, China

Seasonal variations of water-soluble ions in PM₁₀ at a WMO/GAW station in the Yangtze River Delta, China

Contact Info

Product

Resources

About

Effects of the emergency control measures in Beijing on air quality improvement

Cited by 9 publications

References 36 publications

Quantitative estimation of meteorological impacts and the COVID-19 lockdown reductions on NO2 and PM2.5 over the Beijing area using Generalized Additive Models (GAM)

Quantitative estimation of meteorological impacts and the COVID-19 lockdown reductions on NO2 and PM2.5 over the Beijing area using Generalized Additive Models (GAM)

Environmental Effective Assessment of Control Measures Implemented by Clean Air Action Plan (2013–2017) in Beijing, China

Seasonal variations of water-soluble ions in PM10 at a WMO/GAW station in the Yangtze River Delta, China

Contact Info

Product

Resources

About

Seasonal variations of water-soluble ions in PM₁₀ at a WMO/GAW station in the Yangtze River Delta, China