Particulate Matter: Source and Concentrations

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Quality".

Deadline for manuscript submissions: 28 September 2026 | Viewed by 527

Special Issue Editor


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Guest Editor
Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: aerosol monitoring; aerosol chemical analysis; aerosol instrumentation

Special Issue Information

Dear Colleagues,

Particulate matter (PM), a complex mixture of solid particles and liquid droplets suspended in the air, is a critical air pollutant with profound impacts on human health, climate, and ecosystems. Its sources are diverse, ranging from direct emissions (e.g., combustion, dust, industrial processes) to secondary formation in the atmosphere through chemical reactions involving precursor gases. The concentration of PM in the atmosphere is governed by a dynamic interplay between emissions, atmospheric transport, chemical transformation, and removal processes such as deposition. Understanding the intricate pathways from source to ambient concentration remains a significant scientific challenge, particularly due to the multiscale nature of these processes and the multiphysics interactions involving chemistry, turbulence, radiation, and cloud microphysics.

This Special Issue aims to collate original research that advances the mechanistic understanding of particulate matter sources and the physical and dynamical processes controlling their atmospheric concentrations. We seek studies that elucidate the links between emissions, atmospheric processing, and the resulting spatiotemporal distribution of PM, with a focus on bridging scales and integrating physical and chemical phenomena. The goal is to improve predictive capabilities for air quality management and exposure assessment. We welcome theoretical, modeling, observational, and experimental contributions. Topics of interest include, but are not limited to, the following:

  • Characterization and quantification of primary PM emissions;
  • Formation and aging mechanisms of secondary PM;
  • Source apportionment techniques and studies;
  • Multiscale modeling and measurement of PM dispersion and evolution;
  • Interactions between PM dynamics and meteorology/climate;
  • Long-range transport and transboundary pollution.

Prof. Dr. Lina Zheng
Guest Editor

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Keywords

  • particulate matter
  • source apportionment techniques
  • long-range transport

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Published Papers (1 paper)

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Research

12 pages, 3047 KB  
Article
Multi-Source Vertical Sensing of a Winter Dust Event: Quantifying Transport, Microphysics, and Environmental Impacts in Coastal Eastern China
by Minjuan Mao, Fangping Deng, Houtong Liu, Zhicheng Wang and Qiong Li
Atmosphere 2026, 17(5), 472; https://doi.org/10.3390/atmos17050472 - 4 May 2026
Viewed by 310
Abstract
Based on a bimodal normal distribution for dust size distribution, a quantitative method for estimating dust input was established in this study, and then the transport, microphysics, and environmental effects of a dust event from 26 to 28 November 2025 were investigated based [...] Read more.
Based on a bimodal normal distribution for dust size distribution, a quantitative method for estimating dust input was established in this study, and then the transport, microphysics, and environmental effects of a dust event from 26 to 28 November 2025 were investigated based on a multi-source vertical remote sensing system in Zhejiang. The results indicate that the net PM10 input was approximately 7760 tons, exhibiting a spatial distribution that decreased from northeast to southwest. The net input per unit area ranged from 0.001 to 0.293 t/km2. The dust was coarse-dominated, initially lowering the PM2.5/PM10 ratio, which later recovered due to gravitational settling and aging. A distinct “upper-small, lower-large” depolarization ratio profile, caused by gravitational settling and hygroscopic absorption, signaled dust intrusion into the breathing zone and an imminent rise in surface PM10, thereby providing a potential early-warning indicator. Dust influx first elevated the relative humidity below the dust layer via radiative cooling but later reduced the near-surface humidity through hygroscopic absorption after settlement. Additionally, decreases in SO2 and NO2 suggested a potential mitigation of atmospheric acidity by the dust. The O3 response showed spatial heterogeneity: in most areas, it was negatively correlated with NO2, reflecting NO2 titration effects under a VOC-controlled regime, while, in a few areas, both decreased synchronously. These findings underscore the dual physical–chemical impacts of dust on regional air quality and support the development of dust-related pollution early-warning systems. Full article
(This article belongs to the Special Issue Particulate Matter: Source and Concentrations)
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