Co-occurrence of ozone and PM2.5 pollution in the Yangtze River Delta over 2013–2019: Spatiotemporal distribution and meteorological conditions

Dai, Huibin; Zhu, Jia; Liao, Hong; Li, Jiandong; Liang, Muxue; Yang, Yang; Yue, Xu

doi:10.1016/j.atmosres.2020.105363

Cited by 77 publications

(39 citation statements)

References 31 publications

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“…(4) O3 pollution should be controlled in coordination with PM2.5/PM10. O3 and PM2.5 co-pollution conditions occur under meteorological conditions of high relative humidity, high surface air temperature and low wind speed [98]. When PM2.5 and O3 interact under different ambient meteorological conditions, it depends on the domi-nant party.…”

Section: Prevention and Control Measures For Tropospheric Ozone Pollutionmentioning

confidence: 99%

Review on Atmospheric Ozone Pollution in China: Formation, Spatiotemporal Distribution, Precursors and Affecting Factors

Lin

Zou

et al. 2021

Atmosphere

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In recent years, atmospheric ozone pollution has become more and more serious in many areas of China due to the rapid development of industrialization and urbanization. The increase in atmospheric ozone concentration will not only cause harm to the human respiratory tract, nervous system and immune system, but also cause obvious harm to crops, which will lead to reductions in crop production. Therefore, the study of atmospheric ozone pollution should not be ignored in research on the atmospheric environment. In this paper, we summarized the formation mechanisms of atmospheric ozone, the spatiotemporal distribution characteristics of atmospheric ozone in some areas of China, the relationship between atmospheric ozone and its precursors, and the main factors affecting the concentration of atmospheric ozone. Then, the control countermeasures against atmospheric ozone pollution were put forward in combination with the actual situation in China.

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Section: Prevention and Control Measures For Tropospheric Ozone Pollutionmentioning

confidence: 99%

Review on Atmospheric Ozone Pollution in China: Formation, Spatiotemporal Distribution, Precursors and Affecting Factors

Lin

Zou

et al. 2021

Atmosphere

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“…China has prioritized a series of legislative actions for air quality improvement; for instance, the Air Pollution Prevention and Control Action Plan (the “Action Plan”) was issued in September 2013. Currently, the air quality in the YRD has improved significantly with PM 2.5 (particles with aerodynamic diameters of <2.5 μm) concentrations decreasing by 13.3 μg m −3 (22.1%) from 2014 to 2019 ( Dai et al., 2021 ). However, considering the impact of pollutant emissions, unfavorable meteorological elements and transport processes, haze events also occur frequently in winter in the YRD ( Huang et al., 2020b ; Kang et al., 2019 ; Li et al., 2018 , 2020a ; Wang et al., 2014a ).…”

Section: Introductionmentioning

confidence: 99%

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Wang

Miao

Shen

et al. 2021

Environmental Pollution

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“…From 16 to 19 December, PM 2.5 began to accumulate again with unfavourable diffusion conditions (WS10 of 1.4 m s −1 ) and enhanced formation of secondary aerosols under high relative humidity of 67.1 % (J. Dai et al, 2021). Throughout the simulated period of 11-19 December 2016, Beijing had no precipitation and was partly cloudy (Fig.…”

Section: Meteorological Parametersmentioning

confidence: 99%

Simulated impacts of vertical distributions of black carbon aerosol on meteorology and PM<sub>2.5</sub> concentrations in Beijing during severe haze events

et al. 2022

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Abstract. Vertical profiles of black carbon (BC) play a critical role in modifying the meteorological conditions such as temperature, planetary boundary layer height (PBLH), and regional circulation, which influence surface layer concentrations of PM2.5 (particulate matter with a diameter of 2.5 µm or less; the surface layer covers from 0 to 79.5 m). However, BC vertical profiles in current models usually have large uncertainties. In this study, by using measurements of BC vertical profiles in Beijing collected by King Air 350 aircraft and the Weather Research and Forecasting with Chemistry model (WRF-Chem) coupled with an improved integrated process (IPR) analysis scheme, we investigated the direct radiative effect (DRE) of BC with different vertical profiles on meteorology and PM2.5 concentrations in Beijing during two severe haze events (11–12 and 16–19 December 2016). Compared with measurements in Beijing, the model overestimated BC concentrations by 87.4 % at the surface and underestimated BC mass by 14.9 % at altitudes of 300–900 m as averaged over the two pollution events. The BC DRE with the default vertical profiles from the model heated the air around 300 m altitude, but the warming would be stronger when BC vertical profiles were modified for each day using the observed data during the two severe haze events. Accordingly, compared to the simulation with the default vertical profiles of BC, PBLH was reduced further by 24.7 m (6.7 %) and 6.4 m (3.8 %) in Beijing in the first and second haze events, respectively, with the modified vertical profiles, and hence the surface layer PM2.5 concentrations were higher by 9.3 µg m−3 (4.1 %) and 5.5 µg m−3 (3.0 %) over central Beijing, owing to increased positive contributions of vertical mixing and chemical processes. Furthermore, we quantified by sensitivity experiments the roles of BC vertical profiles with six exponential decline functions (C(h)=C0×e-h/hs and hs = 0.35, 0.48, 0.53, 0.79, 0.82, and 0.96) parameterized on the basis of the observations. A larger hs means less BC at the surface and more BC in the upper atmosphere, resulting in less solar radiation reaching the ground and consequently a stronger cooling at the surface (+0.21 with hs of 0.35 vs. −0.13∘ with hs of 0.96). Our results indicate that it is very important to have accurate vertical profiles of BC in simulations of meteorology and PM2.5 concentrations during haze events.

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Co-occurrence of ozone and PM2.5 pollution in the Yangtze River Delta over 2013–2019: Spatiotemporal distribution and meteorological conditions

Cited by 77 publications

References 31 publications

Review on Atmospheric Ozone Pollution in China: Formation, Spatiotemporal Distribution, Precursors and Affecting Factors

Review on Atmospheric Ozone Pollution in China: Formation, Spatiotemporal Distribution, Precursors and Affecting Factors

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Simulated impacts of vertical distributions of black carbon aerosol on meteorology and PM<sub>2.5</sub> concentrations in Beijing during severe haze events

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Co-occurrence of ozone and PM2.5 pollution in the Yangtze River Delta over 2013–2019: Spatiotemporal distribution and meteorological conditions

Cited by 77 publications

References 31 publications

Review on Atmospheric Ozone Pollution in China: Formation, Spatiotemporal Distribution, Precursors and Affecting Factors

Review on Atmospheric Ozone Pollution in China: Formation, Spatiotemporal Distribution, Precursors and Affecting Factors

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Simulated impacts of vertical distributions of black carbon aerosol on meteorology and PM&lt;sub&gt;2.5&lt;/sub&gt; concentrations in Beijing during severe haze events

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Simulated impacts of vertical distributions of black carbon aerosol on meteorology and PM<sub>2.5</sub> concentrations in Beijing during severe haze events