Mineralogical similarities and differences of dust storm particles at Beijing from deserts in the north and northwest

Wang, Wenhua; Shao, Longyi; Zhang, Daizhou; Li, Yaowei; Li, Wenjun; Xing, Jiaoping

doi:10.1016/j.scitotenv.2021.149980

Cited by 27 publications

(21 citation statements)

References 45 publications

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“…Their frequencies are 44.84% (CLD-I) and 75.77% (CLD-II). The airflow from the desert area in the northwest to Beijing will bring more dust aerosols and cause more polluted dust [14]. To further evaluate the potential source areas and contributing concentrations that affect atmospheric pollution in Beijing, the WPSCF and WCWT of PM2.5 were calculated.…”

Section: Backward Trajectory and Potential Sources Of Aerosolmentioning

confidence: 99%

“…Therefore backward-trajectory and potential-source-contribution models were used to assess the impact of possible sources of aerosols on the atmospheric environment in Beijing, Wuhan, and Guangzhou. Figures 12 and 13 The airflow from the desert area in the northwest to Beijing will bring more dust aerosols and cause more polluted dust [14]. To further evaluate the potential source areas and contributing concentrations that affect atmospheric pollution in Beijing, the WPSCF and WCWT of PM 2.5 were calculated.…”

Section: Backward Trajectory and Potential Sources Of Aerosolmentioning

confidence: 99%

“…It is worth noting that many absorbent aerosols (organic and black carbon) are produced by the above coal-burning emissions [13], but few scholars have analyzed the light-absorbing aerosols during the CLD period. Moreover, the long-range transport of dust from Northwest China in winter [14] and the cross-border transit of biomass burning in Southeast Asia in spring [15] can disturb the atmospheric environment in some regions of China. Therefore, it is urgent to study the impact of absorptive aerosols (dust, organic and black carbon) on regional/global air quality during the CLD period.…”

Section: Introductionmentioning

confidence: 99%

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Aerosol Characteristics during the COVID-19 Lockdown in China: Optical Properties, Vertical Distribution, and Potential Source

Jin

Zhang

et al. 2022

Remote Sensing

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The concentration changes of aerosols have attracted wide-ranging attention during the COVID-19 lockdown (CLD) period, but the studies involving aerosol optical properties (AOPs) are relatively insufficient, mainly AOD (fine-mode AOD (AODf) and coarse-mode AOD (AODc)), aerosol absorption optical depth (AAOD), and aerosol extinction coefficient (AEC). Here, the remote-sensing observations, Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) products, backward-trajectory, and potential-source-contribution models are used to assess the impact of AOPs, vertical distribution, and possible sources on the atmosphere environment in North China Plain (NCP), Central China (CC), Yangtze River Delta (YRD), Pearl River Delta (PRD), and Sichuan Basin (SB) during the CLD period. The results demonstrate that both AOD (MODIS) and near-surface AEC (CALIPSO, <2 km) decreased in most areas of China. Compared with previous years (average 2017–2019), the AOD (AEC) of NCP, CC, YRD, PRD, and SB reduced by 3.33% (10.76%), 14.36% (32.48%), 10.80% (29.64%), 31.44% (22.68%), and 15.50% (8.44%), respectively. In addition, MODIS (AODc) and MERRA-2 (AODc) decreased in the five study areas compared with previous years, so the reduction in dust activities also contributed to improving regional air quality during the epidemic. Despite the reduction of anthropogenic emissions (AODf) in most areas of China during the CLD periods, severe haze events (AODf > 0.6) still occurred in some areas. Compared to previous years, there were increases in BC, OC (MERRA-2), and national raw coal consumption during CLD. Therefore, emissions from some key sectors (raw coal heating, thermal power generation, and residential coal) did not decrease, and this may have increased AODf during the CLD. Based on backward -rajectory and potential source contribution models, the study area was mainly influenced by local anthropogenic emissions, but some areas were also influenced by northwestern dust, Southeast Asian biomass burning, and marine aerosol transport. This paper underscores the importance of emissions from the residential sector and thermal power plants for atmospheric pollution in China and suggests that these sources must be taken into account in developing pollution-mitigation plans.

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Section: Backward Trajectory and Potential Sources Of Aerosolmentioning

confidence: 99%

Section: Backward Trajectory and Potential Sources Of Aerosolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Aerosol Characteristics during the COVID-19 Lockdown in China: Optical Properties, Vertical Distribution, and Potential Source

Jin

Zhang

et al. 2022

Remote Sensing

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“…The study involves MODBGA V006 for BT with a threshold of 310.5K for dust storm areas, values above this shows ground sand and dust (Yue et al, 2017, Albarakat andLakshmi, 2019). (Rashki et al, 2017, Yue et al, 2017, Wang et al, 2022. Visibility, wind speed, velocity, rainfall and humidity data was retrieved at 500 hap from NCEP/NCAR.…”

Section: Normalized Dust Detection Index (Nddi): Nddi Depend Upon Vis...mentioning

confidence: 99%

A Case Study of Dust Storm Events in Pakistan Using Normalized Dust Detection Index

Yaqub¹,

Younes

Mahmood³

et al. 2023

PJS

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Currently dust storms are among the most prevalent global environmental issues.They are the early warning indicators for desertification and climate change. The study intends toanalyse dust event in Pakistan using normalized dust detection index (NDDI), brightness temperature(BT) and MODIS data of aerosol optical depth (AOD), deep blue angstrom exponent (AE), aerosolindex (AI) and HYSPLIT mass trajectory methods. It also highlighted the relationship between NDDI,BT and AOD. The threshold value of NDDI was 0.19 - 0.36 and BT ≤ 310.5 K. Data from CALIPSO,NCEP/NCAR reanalysis datasets were used to validate research’s findings. The results found NDDIand BT value for Pakistan and track the movement of dust storm from west to east especially at theheight of 5-10km. Dust storms are inversely proportional to relative humidity and pressure.

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“…Dong et al [32] found that quartz, clay minerals, and amorphous materials accounted for 24.1%, 28.5%, and 20% of inhalable particles in northern China during dusty weather, respectively. Wang et al [33] studied the composition of APM during two extremely large sandstorms in Beijing in 2015 and found that AMPM accounted for 85.3% and 95.4% of APM, respectively, among which the clay mineral content was the highest, being more than 50%, followed by quartz, feldspar, and carbonate particles (Figure 3). In India, Spain, Italy, and North Africa, AMPM account for 30-70% of the total particulate matter, and the main mineral phase is the same as in China.…”

Section: Source and Composition Of Apmmentioning

confidence: 99%

Research Progress on Heterogeneous Reactions of Pollutant Gases on the Surface of Atmospheric Mineral Particulate Matter in China

et al. 2022

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Haze is the phenomenon of visibility degradation caused by extinction effects related to the physicochemical properties of atmospheric particulate matter (APM). Atmosphere heterogeneous reactions can alter the physicochemical properties of APM. Therefore, it is important to understand the atmospheric heterogeneous reactions of APM in order to reveal the cause of haze. Herein, the current situation, developmental trend, source, and composition of APM pollution in China are reviewed. Additionally, we introduce the reaction characteristics and key chemical processes of common inorganic, organic, and mixed pollutant gases on the surface of mineral particles. The effects of mineral particulate matter on aggregation, regulation, and catalysis in the formation of atmospheric aerosols and the synergistic reaction mechanism of SO2, NO2, O3, and VOCs on the surfaces of different mineral particles are summarized. The problems existing in the current research on heterogeneous reactions on the surfaces of mineral particles are also evaluated. This paper aims to gain a deep understanding of the mechanism of mineral particulate matter promoting the formation of secondary aerosols and attempts to provide theoretical support for effective haze control.

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Mineralogical similarities and differences of dust storm particles at Beijing from deserts in the north and northwest

Cited by 27 publications

References 45 publications

Aerosol Characteristics during the COVID-19 Lockdown in China: Optical Properties, Vertical Distribution, and Potential Source

Aerosol Characteristics during the COVID-19 Lockdown in China: Optical Properties, Vertical Distribution, and Potential Source

A Case Study of Dust Storm Events in Pakistan Using Normalized Dust Detection Index

Research Progress on Heterogeneous Reactions of Pollutant Gases on the Surface of Atmospheric Mineral Particulate Matter in China

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