Ultrafine Particles: Formation, Transport and Effect
A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Aerosols".
Deadline for manuscript submissions: 31 July 2024 | Viewed by 61
Special Issue Editor
Interests: new particle formation; secondary aerosols; particle number size distribution; cloud condensation nuclei; haze formation
Special Issue Information
Dear Colleagues,
Atmospheric aerosol particles have important environmental effects, especially those ultrafine particles with a diameter less than 1 μm, which can deposit inside the human respiratory system. The ultrafine particles can cause visibility problems due to direct light extinction and influence the climate by acting as cloud condensation nuclei (CCN).
Ultrafine particles can not only be emitted by combustion-related sources such as transportation and industry but also be formed through gas-to-particle conversion processes, e.g., atmospheric nucleation, condensation of low-volatile compounds, heterogeneous reactions, etc. The ultrafine particles have a half-life period ranging from several minutes to days. Once formed in the atmosphere, they can be transported long distances by air masses and have regional impacts.
The relationship between gaseous precursor levels and the formation of secondary particles can be influenced by various factors, including oxidation capacity, the phase state and viscosity of particles, the volatility of secondary organic compounds, etc. The mechanisms of ultrafine particle formation in the atmosphere are not fully understood, which leads to significant uncertainties in pollution control measures and climate change assessment.
To provide a deeper understanding of ultrafine particles in the atmosphere, the Special Issue "Ultrafine Particles: Formation, Transport and Effect" calls for papers on the following topics:
- The formation mechanisms of secondary ultrafine particles, e.g., new particle formation and growth, oxidation-condensation of organic compounds, heterogeneous reactions, etc.
- The transport of ultrafine particles or their gas precursors and their contributions to regional particle pollution.
- Estimations of environmental effects caused by ultrafine particles, e.g., light scattering/absorption or CCN concentration and activity.
Dr. Dongjie Shang
Guest Editor
Manuscript Submission Information
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Keywords
- ultrafine particles
- aerosol formation
- new particle formation
- secondary organic aerosols
- regional transport
- cloud condensation nuclei
- particle pollution
