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Measurements of Physico-Chemical Properties of Atmospheric Aerosols and Their Impacts...
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Measurements of Physico-Chemical Properties of Atmospheric Aerosols and Their Impacts in Air Pollution and Climate

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

Deadline for manuscript submissions: closed (1 December 2023) | Viewed by 2273

Special Issue Editors

Dr. Juan Hong

E-Mail Website
Guest Editor
Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, China
Interests: hygroscopicity; volatility; mixing state; new particle formation
Special Issues, Collections and Topics in MDPI journals
Dr. Jiangchuan Tao

E-Mail Website
Guest Editor
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Interests: cloud condensation nuclei; aerosol optical properties; aerosol-cloud interactions; measurement techniques
Dr. Junwen Liu

E-Mail Website
Guest Editor
Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China
Interests: black carbon aerosol; air pollution; source apportionment; isotope
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Air pollution and climate change are two important issues threatening our Earth. Natural and anthropogenic aerosols significantly affect weather and Earth’s climate system and air quality by scattering and absorbing solar radiation, acting as cloud condensation nuclei (CCN) and ice nuclei (IN), and modifying the microphysical properties and the life cycle of clouds through various processes. The changes in weather and climate system in turn impact humans and a wide ecosystem and environment from urban to high-altitude areas/arctic regions. Given the significance of the interactions between aerosols and weather/climate, accurately determining the microphysical and chemical properties of aerosols is of great importance.

In the past decades, a wide range of studies has been focusing on the physical-chemical properties of aerosols via observations, laboratory experiments as well as model simulations. However, due to the complexity of atmospheric aerosols and their interactions with weather/climate, the data on detailed physical-chemical properties of aerosols is still limited and large uncertainties associated with aerosol-weather/climate interactions are still present. In this Special Issue, we welcome all studies based on ambient observations, laboratory experiments, model simulations, and theoretical approaches that investigate the physical and chemical properties of aerosols and their impacts on and/or interaction with weather and climate system. Our Special Issue aims at filling the data pool of physical-chemical properties of aerosols by most recent development and discoveries and addressing to improve our understanding and quantify the roles of aerosols on weather/climate. Relevant topics include (1) aerosol microphysical and chemical properties investigated both by bulk and single-particle approaches, e.g., size, morphology, mixing/phase state, chemical composition, hygroscopicity, volatility, refractive index, etc., and their changes during atmospheric evolution (2) Relationships of these aerosol properties with air quality, radiation, clouds/fogs, precipitation, extreme weather like heat waves, and large-scale atmospheric circulation and (3) Roles of the interactions of aerosol physical and chemical properties and weather and climate and implications on future mitigation strategies involving air quality/weather/climate change.

Dr. Juan Hong
Dr. Jiangchuan Tao
Dr. Junwen Liu
Guest Editors

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

  • aerosols
  • size distribution
  • morphology
  • mixing state
  • chemical composition
  • hygroscopicity & volatility phase state
  • weather
  • climate
  • aerosol formation
  • atmospheric processes

Published Papers (2 papers)

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Research

16 pages, 3584 KiB  
Article
Chemical Composition and Source of PM2.5 during Winter Heating Period in Guanzhong Basin
by Lei Cao, Yanan Tao, Hao Zheng, Mei Wang, Shiying Li, Yongjiang Xu and Mei Li
Atmosphere 2023, 14(11), 1640; https://doi.org/10.3390/atmos14111640 - 31 Oct 2023
Cited by 2 | Viewed by 798
Abstract
An intensive field campaign was carried out from December 2022 to March 2023 at six different sites across five major cities (Xi’an, Baoji, Xianyang, Weinan, and Hancheng) in the Guanzhong Basin, China, covering most of the heating period there, which is characterized by [...] Read more.
An intensive field campaign was carried out from December 2022 to March 2023 at six different sites across five major cities (Xi’an, Baoji, Xianyang, Weinan, and Hancheng) in the Guanzhong Basin, China, covering most of the heating period there, which is characterized by high PM2.5 pollution levels. During the campaign, the mean PM2.5 concentrations at these sites exceeded the 24 h PM2.5 standard (75 μg m−3), except the site at Hancheng, with mean PM2.5 concentrations of 57.8 ± 32.3 μg m−3. The source apportionment of PM2.5 varied significantly across sites, with vehicle exhaust being the dominant source at urban sites located in Xi’an and Baoji, coal combustion at suburban sites in Hancheng, and comparable contribution from coal combustion and industrial emissions at suburban sites in Xianyang and Weinan. Compared with clean condition, the contribution of vehicle exhaust and secondary inorganic sources (SIs) were largely enhanced during heavy PM2.5 pollution periods, while the contribution from biomass burning (BB) and dust decreased significantly at all sites. Combined with an analysis of meteorological parameters, the study further found that higher contributions of SIs and heavy PM2.5 pollution were generally associated with higher relative humidity (RH). In addition, higher PM2.5 concentrations at suburban sites were related to lower wind speeds, which could be explained by the stagnant condition favoring the accumulation of local emissions as well as the formation of secondary pollutants. In contrast, at urban sites (e.g., Xianyang), higher PM2.5 concentrations were more associated with the strong influence of vehicle exhaust at slightly higher wind speeds. Full article
(This article belongs to the Special Issue Measurements of Physico-Chemical Properties of Atmospheric Aerosols and Their Impacts in Air Pollution and Climate)
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12 pages, 5107 KiB  
Article
Comprehensive Evaluation of Environmental Air Quality Based on the Entropy Weights and Concentration Variation Trends of Pollutants
by Hao Zheng, Zhen Yang, Jianhua Yang, Yanan Tao and Linlin Zhang
Atmosphere 2022, 13(12), 1978; https://doi.org/10.3390/atmos13121978 - 26 Nov 2022
Cited by 1 | Viewed by 1057
Abstract
The comprehensive index method has difficulties in evaluating the influence of air pollutant concentration changes on ambient air quality. Thus, a comprehensive evaluation method based on pollutant entropy weights and trend-regulating factors is proposed. According to the information entropy rates of 6 pollutants, [...] Read more.
The comprehensive index method has difficulties in evaluating the influence of air pollutant concentration changes on ambient air quality. Thus, a comprehensive evaluation method based on pollutant entropy weights and trend-regulating factors is proposed. According to the information entropy rates of 6 pollutants, the single entropy weight index is proposed by integrating it with the single-quality index, which reflects pollutant variations in evaluation periods. The Spearman’s rank correlation coefficient between the pollutant and Air Quality Index (AQI) is defined as the trend-regulating factor, which indicates the correlations between pollutants and improvements or retrogressions in ambient air quality. The covariance is used to determine the variation trend of ambient air quality, which decides the positive or negative of trend-regulating factor. This method is used to study the ambient air quality rates in 10 cities of Shaanxi Province from 2017 to 2022. The trends of air quality improvements vary among the central, northern, and southern cities. The central cities have more spaces for air quality improvements in terms of PM2.5 and O3. Although prevention efforts have reduced the impacts of pollutants, PM2.5 is still the key factor affecting improvements in ambient air quality in most cities in winter. Additionally, the O3 pollution in summer was not controlled effectively. The contribution to air pollution of O3 increased, on the contrary with the improvement in air quality. The coordinated control of PM2.5 and O3 is still an important method of ambient air quality improvement. Full article
(This article belongs to the Special Issue Measurements of Physico-Chemical Properties of Atmospheric Aerosols and Their Impacts in Air Pollution and Climate)
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