Current Status, Characteristics and Causes of Particulate Air Pollution in the Fenwei Plain, China: A Review

Cao, Junji; Cui, Long

doi:10.1029/2020jd034472

Cited by 52 publications

(30 citation statements)

References 118 publications

(218 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Fenwei Plain is located in the MYR, and PM2.5 pollution is severe in this region. PM2.5 concentrations that are attributable to vehicle exhaust, biomass combustion, substances from coal combustion, and dust have been reported in previous studies [ 51 , 85 ]. WIN has a significant effect on PM2.5 concentrations in the four seasons of the DYR, with the strongest effects in winter, which finding is also consistent with previous studies [ 53 , 58 , 86 ].…”

Section: Discussionsupporting

confidence: 53%

“…With its accelerated urbanization, the YRB faces serious air pollution issues, mainly due to particulate matter [ 50 ]. The Fenwei Plain in the YRB became one of the three key areas for air pollution control in China in 2018, replacing the Pearl River Delta [ 51 ]. In recent years, some scholars have explored the spatial and temporal characteristics and driving mechanisms behind air pollution, focusing on key cities [ 26 , 52 , 53 , 54 ], major regions, and urban agglomerations [ 51 , 55 , 56 , 57 ] in the YRB.…”

Section: Introductionmentioning

confidence: 99%

“…The Fenwei Plain in the YRB became one of the three key areas for air pollution control in China in 2018, replacing the Pearl River Delta [ 51 ]. In recent years, some scholars have explored the spatial and temporal characteristics and driving mechanisms behind air pollution, focusing on key cities [ 26 , 52 , 53 , 54 ], major regions, and urban agglomerations [ 51 , 55 , 56 , 57 ] in the YRB. Wang et al [ 58 ] studied the causes of heavy haze pollution in Xi’an, Shaanxi Province, and found that high-intensity anthropogenic emissions, relative humidity, consistent low temperature, and surface air pressure were the main drivers of heavy pollution formation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multi-Scale Effects of Meteorological Conditions and Anthropogenic Emissions on PM2.5 Concentrations over Major Cities of the Yellow River Basin

Yao

Liu

Song

et al. 2022

IJERPH

View full text Add to dashboard Cite

The mechanism behind PM2.5 pollution is complex, and its performance at multi-scales is still unclear. Based on PM2.5 monitoring data collected from 2015 to 2021, we used the GeoDetector model to assess the multi-scale effects of meteorological conditions and anthropogenic emissions, as well as their interactions with PM2.5 concentrations in major cities in the Yellow River Basin (YRB). Our study confirms that PM2.5 concentrations in the YRB from 2015 to 2021 show an inter-annual and inter-season decreasing trend and that PM2.5 concentrations varied more significantly in winter. The inter-month variation of PM2.5 concentrations shows a sinusoidal pattern from 2015 to 2021, with the highest concentrations in January and December and the lowest from June to August. The PM2.5 concentrations for major cities in the middle and downstream regions of the YRB are higher than in the upper areas, with high spatial distribution in the east and low spatial distribution in the west. Anthropogenic emissions and meteorological conditions have similar inter-annual effects, while air pressure and temperature are the two main drivers across the whole basin. At the sub-basin scale, meteorological conditions have stronger inter-annual effects on PM2.5 concentrations, of which temperature is the dominant impact factor. Wind speed has a significant effect on PM2.5 concentrations across the four seasons in the downstream region and has the strongest effect in winter. Primary PM2.5 and ammonia are the two main emission factors. Interactions between the factors significantly enhanced the PM2.5 concentrations. The interaction between ammonia and other emissions plays a dominant role at the whole and sub-basin scales in summer, while the interaction between meteorological factors plays a dominant role at the whole-basin scale in winter. Our study not only provides cases and references for the development of PM2.5 pollution prevention and control policies in YRB but can also shed light on similar regions in China as well as in other regions of the world.

show abstract

Section: Discussionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-Scale Effects of Meteorological Conditions and Anthropogenic Emissions on PM2.5 Concentrations over Major Cities of the Yellow River Basin

Yao

Liu

Song

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…As a result of large reductions in anthropogenic emissions, the air pollution has been significantly improved with the successful implementation of "Action Plan on Prevention and Control of Air Pollution" in 2013 in China [19]. However, severe haze episodes still happen in some areas of central and eastern China (including Beijing-Tianjin-Hebei [10], Yangtze River Delta [20], Sichuan-Chongqing area [21], Fenwei Plain [22], Central China [23], etc.) in autumn and winter.…”

Section: Introductionmentioning

confidence: 99%

Research on the Growth Mechanism of PM2.5 in Central and Eastern China during Autumn and Winter from 2013–2020

2022

View full text Add to dashboard Cite

Haze is a majorly disastrous type of weather in China, especially central and eastern of China. The development of haze is mainly caused by highly concentrated fine particles (PM2.5) on a regional scale. Here, we present the results from an autumn and winter study conducted from 2013 to 2020 in seven highly polluted areas (27 representative stations) in central and eastern China to analyze the growth mechanism of PM2.5. At the same time, taking Beijing Station as an example, the characteristics of aerosol composition and particle size in the growth phase are analyzed. Taking into account the regional and inter-annual differences of fine particles (PM2.5) distribution, the local average PM2.5 growth value of the year is used as the boundary value for dividing slow, rapid, and explosive growth (only focuses on the hourly growth rate greater than 0). The average value of PM2.5 in the autumn and winter of each regional representative station shows a decreasing trend as a whole, especially after 2017, whereby the decreasing trend was significant. The distribution value of +ΔPM2.5 (PM2.5 hourly growth rate) in the north of the Huai River is lower than that in the south of the Huai River, and both of the +ΔPM2.5 after 2017 showed a significant decreasing trend. The average PM2.5 threshold before the explosive growth is 70.8 µg m−3, and the threshold that is extremely prone to explosive growth is 156 µg m−3 to 277 µg m−3 in north of the Huai River. For the area south of the Huai River, the threshold for PM2.5 explosive growth is relatively low, as a more stringent threshold also puts forward stricter requirements on atmospheric environmental governance. For example, in Beijing, the peak diameters gradually shift to larger sizes when the growth rate increases. The number concentration increasing mainly distributed in Aitken mode (AIM) and Accumulation mode (ACM) during explosive growth. Among the various components of submicron particulate matter (PM1), organic aerosol (OA), especially primary OA (POA), have become one of the most critical components for the PM2.5 explosive growth in Beijing. During the growth period, the contribution of secondary particulate matter (SPM) to the accumulated pollutants is significantly higher than that of primary particulate matter (PPM). However, the proportion of SPM gradually decreases when the growth rate increases. The contribution of the PPM can reach 48% in explosive growth. Compared to slow and rapid growth, explosive growth mainly occurs in the stable atmosphere of higher humidity, lower pressure, lower temperature, small winds, and low mixed layers.

show abstract

“…East Asia is one of the most significant aerosol sources with complex topography in the world, where the aerosol optical thicknesses (AOTs) are generally higher than those in most other regions (Li et al., 2007). The aerosol components in this vast are complicated with the concurrence of soil dust, smoke, and industrial pollutant (Cao & Cui, 2021; Goto et al., 2015; Huang et al., 2014; Wu et al., 2013). Comprehensively characterizing and reproducing the spatio‐temporal variations of aerosol optical properties over East Asia is crucial to understand the aerosol direct and indirect forcings, which are the largest uncertainties in climate research (Huang et al., 2006; Liu et al., 2019; Oikawa et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Aerosol Forecast and Analysis Over East Asia With Joint Assimilation of Two Geostationary Satellite Observations

Cheng

Dai

Cao

et al. 2022

Geophysical Research Letters

View full text Add to dashboard Cite

Due to the orbit-caused gaps of satellite-based observations, it is difficult to completely describe the spatio-temporal variations and continuously resolve the aerosol evolutions. Although numerical models can generate aerosol optical products with seamless temporal and geographic coverage, the uncertainties in model parameterizations restrict the accurate simulations of aerosol features.Aerosol data assimilation, which combines the observations with numerical models, provides new opportunities to accurately reproduce the aerosol behaviors over East Asia. Previous aerosol assimilation studies have been conducted with different satellite observations including Moderate Resolution Imaging Spectroradiometer (MODIS) (

show abstract

Current Status, Characteristics and Causes of Particulate Air Pollution in the Fenwei Plain, China: A Review

Cited by 52 publications

References 118 publications

Multi-Scale Effects of Meteorological Conditions and Anthropogenic Emissions on PM2.5 Concentrations over Major Cities of the Yellow River Basin

Multi-Scale Effects of Meteorological Conditions and Anthropogenic Emissions on PM2.5 Concentrations over Major Cities of the Yellow River Basin

Research on the Growth Mechanism of PM2.5 in Central and Eastern China during Autumn and Winter from 2013–2020

Improvement of the Aerosol Forecast and Analysis Over East Asia With Joint Assimilation of Two Geostationary Satellite Observations

Contact Info

Product

Resources

About