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Atmosphere
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Towards Understanding Physical and Chemical Characteristics of New Particle Formation...
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Towards Understanding Physical and Chemical Characteristics of New Particle Formation around the Globe

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

Deadline for manuscript submissions: closed (25 March 2022) | Viewed by 3760

Special Issue Editor

Dr. Olga Garmash

E-Mail Website
Guest Editor
Aerosol Physics Laboratory, Physics Unit, Tampere University, FI-33720 Tampere, Finland
Interests: VOC oxidation; secondary aerosol formation; autoxidation; mass spectrometry; molecular clusters; air pollution; anthropogenic–biogenic interaction

Special Issue Information

Dear Colleagues,

Secondary aerosol particles are formed in the atmosphere either through vapour condensation onto pre-existing particles or in new particle formation (NPF). NPF is observed in many different environments, the onset of which is often defined by favourable conditions in the region. Particles formed through NPF can grow competing with larger aerosol particles for low-volatility vapours. This, in turn, changes particle number size distribution inherently impacting cloud condensation nuclei budget as well as air quality. However, the exact mechanisms and impacts of NPF remain unknown in many environments.

This Special Issue aims to gather studies on various aspects of atmospheric new particle formation, including but not limited to physical processes controlling atmospheric NPF, chemical pathways to molecular clustering and particle growth, sources and formation of precursor low-volatility vapours as well as potential impacts of NPF on clouds, radiative budget and air quality. Experimental studies both in the field and in the laboratory as well as theoretical and modelling papers are welcome.

Dr. Olga Garmash
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • secondary aerosol
  • new particle formation
  • nucleation and growth
  • molecular clustering
  • low-volatility vapours
  • highly oxygenated organic molecules

Published Papers (1 paper)

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Research

26 pages, 6052 KiB  
Article
The Effect of Using a New Parameterization of Nucleation in the WRF-Chem Model on New Particle Formation in a Passive Volcanic Plume
by Somayeh Arghavani, Clémence Rose, Sandra Banson, Aurelia Lupascu, Mathieu Gouhier, Karine Sellegri and Céline Planche
Atmosphere 2022, 13(1), 15; https://doi.org/10.3390/atmos13010015 - 23 Dec 2021
Cited by 2 | Viewed by 3157
Abstract
We investigated the role of the passive volcanic plume of Mount Etna (Italy) in the formation of new particles in the size range of 2.5–10 nm through the gas-to-particle nucleation of sulfuric acid (H2SO4) precursors, formed from the oxidation [...] Read more.
We investigated the role of the passive volcanic plume of Mount Etna (Italy) in the formation of new particles in the size range of 2.5–10 nm through the gas-to-particle nucleation of sulfuric acid (H2SO4) precursors, formed from the oxidation of SO2, and their evolution to particles with diameters larger than 100 nm. Two simulations were performed using the Weather Research and Forecasting Model coupled with chemistry (WRF-Chem) under the same configuration, except for the nucleation parameterization implemented in the model: the activation nucleation parameterization (JS1 = 2.0 × 10−6 × (H2SO4)) in the first simulation (S1) and a new parameterization for nucleation (NPN) (JS2 = 1.844 × 10−8 × (H2SO4)1.12) in the second simulation (S2). The comparison of the numerical results with the observations shows that, on average, NPN improves the performance of the model in the prediction of the H2SO4 concentrations, newly-formed particles (~2.5–10 nm), and their growth into larger particles (10–100 nm) by decreasing the rates of H2SO4 consumption and nucleation relative to S1. In addition, particles formed in the plume do not grow into cloud condensation nuclei (CCN) sizes (100–215 nm) within a few hours of the vent (tens of km). However, tracking the size evolution of simulated particles along the passive plume indicates the downwind formation of particles larger than 100 nm more than 100 km far from the vent with relatively high concentrations relative to the background (more than 1500 cm−3) in S2. These particles, originating in the volcanic source, could affect the chemical and microphysical properties of clouds and exert regional climatic effects over time. Full article
(This article belongs to the Special Issue Towards Understanding Physical and Chemical Characteristics of New Particle Formation around the Globe)
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