Effects of meteorology and secondary particle formation on visibility during heavy haze events in Beijing, China

Zhang, Qiang; Quan, Jiannong; Tie, Xuexi; Li, Xia; Liu, Quan; Gao, Yang; Zhao, Delong

doi:10.1016/j.scitotenv.2014.09.079

Cited by 311 publications

(177 citation statements)

References 22 publications

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“…Dabberdt et al (2004) have listed the meteorological research needs for improving air quality forecasting, one of which is to provide the model uncertainty information through ensemble prediction capabilities and quantify uncertainties and feedbacks between meteorological and air quality modeling components. Numerous studies have been performed in China to explore the role of meteorological conditions in the air pollution formation (e.g., Gao et al, 2011;Zhang et al, 2012Zhang et al, , 2015Wu et al, 2013;Wang et al, 2014;Bei et al, 2016a, b). Most recently, Liu et al (2017) have investigated the meteorological impacts on the PM 2.5 concentrations over Beijing-TianjinHebei (BTH) in December 2015.…”

Section: Introductionmentioning

confidence: 99%

Impacts of meteorological uncertainties on the haze formation in Beijing–Tianjin–Hebei (BTH) during wintertime: a case study

Bei

Elser

et al. 2017

Atmos. Chem. Phys.

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Abstract. In the present study, a persistent heavy haze episode from 13 to 20 January 2014 in Beijing-TianjinHebei (BTH) is simulated using the WRF-CHEM model through ensemble simulations to investigate impacts of meteorological uncertainties on the haze formation. Model results show that uncertainties in meteorological conditions substantially influence the aerosol constituent simulations at an observation site in Beijing, and the ratio of the ensemble spread to the ensemble mean (RESM) exceeds 50 %. The ensemble mean generally preforms well in reproducing the fine particles' (PM 2.5 ) temporal variations and spatial distributions against measurements in BTH. The meteorological uncertainties do not alter the PM 2.5 distribution pattern in BTH principally or dominate the haze formation and development, but remarkably affect the simulated PM 2.5 level, and the RESM for the simulated PM 2.5 concentrations can be up to 30 % at the regional scale. In addition, the rather large RESM in PM 2.5 simulations at the city scale also causes difficulties in evaluation of the control strategies. Therefore, our results suggest that the ensemble simulation is imperative to take into account the impact of the meteorological uncertainties on the haze prediction.

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Section: Introductionmentioning

confidence: 99%

Impacts of meteorological uncertainties on the haze formation in Beijing–Tianjin–Hebei (BTH) during wintertime: a case study

Bei

Elser

et al. 2017

Atmos. Chem. Phys.

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“…However, after the summit meeting, on 19 November they didn't integrate well and the widespread anthropogenic pollutants were under 1 km altitude but the dust plumes were above this altitude over the circum-Bohai sea regions. Reductions of the PBL also contribute to the haze pollution [19]. It isIt is obviously seen in Figure 7 that the heights of the PBL were at low altitudes due to the high RH which could enhance the extinction property of aerosols and strong temperature inversions may keep them at a low altitude when the stagnant weather occurred during the haze events.…”

Section: Variations Of Optical and Physical Properties Over North Chinamentioning

confidence: 96%

“…Taking the data covering problems of North China into consideration, AOD retrieved by dark-target method was used on 6, 9, 11, 21 November and deep-blue method in 19,20 November. …”

Section: Variations Of Optical and Physical Properties Over North Cmentioning

confidence: 99%

Multi-Scale Observations of Atmosphere Environment and Aerosol Properties over North China during APEC Meeting Periods

Wei

Chen

et al. 2015

Atmosphere

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This paper reveals a study on air pollution process over North China, applying remote sensing technology, using satellite observation and in situ measurements during the twenty-first Asia-Pacific Economic Cooperation (APEC) meeting, which was held in Beijing between 6 and 12 November when the clear weather was called "APEC-Blue". In the meantime, pollutants concentrations including PM 2.5 and PM 10 in Beijing were lower than 100 µg/m 3 owing to the effective government measures and policies, as well as meteorological conditions. High aerosol loading (AOD > 1) was observed over south of Beijing and vertical observations showed that the pollutants were prominent near the land surface. Different from the meeting period, high pollutants concentrations with explosive growth (the values of PM 2.5 and PM 10 peaking at 291 µg/m 3 and 360 µg/m 3 respectively) appeared over Beijing after the meeting period, accompanied by strong temperature inversion and high Relative Humidity (RH) values. The pollution particles transferred from Beijing area to south part of North China. Otherwise, fine-mode particles with strong absorption characteristic (UVAI > 1.5, AOD > 1) covered the Beijing sky in the meantime, indicating the existence of black carbon aerosols.

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“…In addition to the large spatial dispersion of aerosol pollution, there is also significant temporal variation of aerosol pollution during a short period (days to weeks) in eastern China [9][10][11][12][13]. The focus of this study is to better understand the causes of this short-term temporal variability of aerosol pollution, which has very important implication in haze pollution control in the region.…”

Section: Introductionmentioning

confidence: 99%

Understanding Variability of Haze in Eastern China

Tie¹,

Cao²

2017

J Fundam Renewable Energy Appl

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Effects of meteorology and secondary particle formation on visibility during heavy haze events in Beijing, China

Cited by 311 publications

References 22 publications

Impacts of meteorological uncertainties on the haze formation in Beijing–Tianjin–Hebei (BTH) during wintertime: a case study

Impacts of meteorological uncertainties on the haze formation in Beijing–Tianjin–Hebei (BTH) during wintertime: a case study

Multi-Scale Observations of Atmosphere Environment and Aerosol Properties over North China during APEC Meeting Periods

Understanding Variability of Haze in Eastern China

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