Observed coupling between air mass history, secondary growth of nucleation mode particles and aerosol pollution levels in Beijing

Hakala, Simo; Vakkari, Ville; Bianchi, Federico; Dada, Lubna; Deng, Chao; Daellenbach, Kaspar R.; Fu, Yuan; Jiang, Jingkun; Kangasluoma, Juha; Kujansuu, Joni; Liu, Yongchun; Petäj̈ä, Tuukka; Wang, Linsong; Yan, Chao; Kulmala, Markku; Paasonen, Pauli

doi:10.1039/d1ea00089f

Cited by 8 publications

(1 citation statement)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This process is also known to occur not only locally, but also at regional levels (Kerminen et al, 2018;Kulmala et al, 2012;Wehner et al, 2007). In urban environments, NPF events are often related to environmental parameters, such as solar radiation, but also air mass history and properties, including precursor gas concentrations, and the atmospheric particle loading (Dall'Osto et al, 2013b;Dunn et al, 2004;Hakala et al, 2022;Kanawade et al, 2012;Nilsson et al, 2001;Salma et al, 2011;Stanier et al, 2004;Wonaschütz et al, 2015). The presence if pre-existing particles favours the condensation of low volatility gases, leading to a competition between condensation and nucleation processes.…”

Section: Introductionmentioning

confidence: 99%

New particle formation at a peri-urban agricultural site

Kammer

Simon

Ciuraru

et al. 2023

Science of The Total Environment

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

New particle formation at a peri-urban agricultural site

Kammer

Simon

Ciuraru

et al. 2023

Science of The Total Environment

View full text Add to dashboard Cite

Environmental impact assessment of the coal yard and ambient pollution

Kucbel,

Raclavská,

Slamová

et al. 2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

This study investigates the vertical distribution of pollutants emitted from coal yards using unmanned aerial vehicles (UAVs). Vertical concentration measurements of black carbon (BC) and particulate matter (PM) in a range of 1 m to 100 m above ground level (AGL) in the central coal yard showed clear spatial patterns and gradients of these pollutants. In addition, measurements were taken at specific heights (1 m, 30 m AGL, and 60 m AGL) at seven locations approximately 3 km from the yard. Thirteen measurements were carried out during the non-heating period under similar weather conditions. The measured BC concentrations decreased significantly with increasing altitude, with ground-level concentrations reaching 1.88 ± 0.61 µg/m3 and decreasing by over 46% at 80 m AGL. Similarly, PM10 concentrations at 60 m AGL decreased by 21.7%, with values of 25.99 ± 9.24 µg/m3 measured near the ground level and 16.52 ± 8.31 µg/m3 at 60 m AGL. The maximum coal particle pollution from the coal depot ranges from 500 to 1,000 m. The study showed a significant decrease in BC concentrations with height above the coal yard surface. Concentrations of PM10 and PM10-TSP showed a complex distribution influenced by local emissions and long-range particle transport. Meteorological factors, especially wind speed and direction, significantly influenced the pollutant dispersion. In addition, higher pollutant concentrations were measured during dry periods than after rainfall. The findings of this study contribute to a better understanding of the dispersion patterns and potential impacts of coal dust, enabling the implementation of targeted mitigation strategies and improved pollution control measures.

show abstract