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Atmosphere
Special Issues
Photochemical Air Pollution in Urban Regions
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Photochemical Air Pollution in Urban Regions

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

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 4170

Special Issue Editors

Dr. Zhe Wang

E-Mail Website
Guest Editor
Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong 999077, China
Interests: photochemical air pollution; atmospheric heterogeneous chemistry; VOC oxidation and SOA; cloud–aerosol–gas interactions
Dr. Zhenhao Ling

E-Mail Website
Guest Editor
School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai 519082, China
Interests: photochemical smog; source apportionments; volatile organic compounds; air quality
Dr. Jia Guo

E-Mail Website
Guest Editor
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Interests: ozone formation; photochemical box model; atmospheric multiphase reactions; radical chemistry; peroxides measurement
Dr. Di Chang

E-Mail Website
Guest Editor
Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Interests: air quality simulations; heavy metals; satellite data processing; emission inventory development; cloud–aerosol–gas interactions
Dr. Qinyi Li

E-Mail Website
Guest Editor
Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, Spanish National Research Council (CSIC), 28006 Madrid, Spain
Interests: atmospheric chemistry; multiphase halogen chemistry; air quality; WRF-Chem; CAM-Chem
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photochemical air pollution is one of the most significant regional-scale air pollution problems in many urban and industrialized regions of the world. Photochemical air pollution is characterized by elevated concentrations of ozone (O3) and other secondary pollutants, which result from the photochemical reactions of nitrogen oxides (NOx), volatile organic compounds (VOC), and other pollutants in the presence of sunlight. Photochemical pollution and O3 adversely affect human health, vegetation growth, visibility, and climate. Although the problem has long been recognized, the sources and formation mechanisms of photochemical air pollution are more complex than previously understood, and significant knowledge gaps still exist.

Different governments have implemented various control measures on precursors over the years; however, the O3 levels have not been controlled but rather have exhibited an increasing trend in many urban regions and downwind areas in the past few decades. The formation of secondary pollutants plays a dominant role in the occurrence of air pollution episodes. Air quality models still face challenges in accurately predicting secondary pollutants due to the uncertainties and knowledge gaps in precursors, chemical mechanisms, intermediate and final products, interactions of various pollutants, and so on. Therefore, more comprehensive research is needed to better understand how the cocktail of pollutants emitted from urban and regional scales affects the atmospheric chemistry and, in turn, the production of ozone and secondary pollutants.

This Special Issue aims to collect research that addresses the above scientific issues related to ozone and secondary pollutants and construct a comprehensive understanding of photochemical air pollution in urban regions and, hence, to help develop more efficient pollution control strategies. This SI is open for submissions of original research studies, review, and perspective articles.

Dr. Zhe Wang
Dr. Zhenhao Ling
Dr. Jia Guo
Dr. Di Chang
Dr. Qinyi Li
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

  •  photochemical air pollution
  •  ozone pollution
  •  secondary pollutants
  •  urban air quality
  •  field measurement
  •  photochemical modeling
  •  secondary aerosols
  •  volatile organic compounds
  •  nitrogen oxides
  •  emission and sources

Published Papers (1 paper)

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Research

21 pages, 12268 KiB  
Article
The Modeling Study about Impacts of Emission Control Policies for Chinese 14th Five-Year Plan on PM2.5 and O3 in Yangtze River Delta, China
by Zhen Li, Shaocai Yu, Mengying Li, Xue Chen, Yibo Zhang, Zhe Song, Jiali Li, Yaping Jiang, Weiping Liu, Pengfei Li and Xiaoye Zhang
Atmosphere 2022, 13(1), 26; https://doi.org/10.3390/atmos13010026 - 25 Dec 2021
Cited by 12 | Viewed by 3418
Abstract
The Chinese government has made great efforts to combat air pollution through the reductions in SO2, NOx and VOCs emissions, as part of its socioeconomic Five-Year Plans (FYPs). China aims to further reduce the emissions of VOCs and NOx by 10% [...] Read more.
The Chinese government has made great efforts to combat air pollution through the reductions in SO2, NOx and VOCs emissions, as part of its socioeconomic Five-Year Plans (FYPs). China aims to further reduce the emissions of VOCs and NOx by 10% in its upcoming 14th FYP (2021–2025). Here, we used a regional chemical transport model (e.g., WRF/CMAQ) to examine the responses of PM2.5 and O3 to emission control policies of the 14th FYP in the Yangtze River Delta (YRD) region. The simulation results under the 4 emission control scenarios in the 2 winter months in 2025 indicate that the average concentrations of city mean PM2.5 in 41 cities in the YRD were predicted to only decrease by 10% under both S1 and S1_E scenarios, whereas the enhanced emission control scenarios (i.e., S2_E and S3_E) could reduce PM2.5 in each city by more than 20%. The model simulation results for O3 in the 3 summer months in 2025 show that the O3 responses to the emission controls under the S1 and S1_E scenarios show different control effects on O3 concentrations in the YRD with the increase and decrease effects, respectively. The study found that both enhanced emission control scenarios (S2_E and S3_E) could decrease O3 in each city by more than 20% with more reductions in O3 under the S3_E emission control scenario because of its higher control strengths for both NOx and VOCs emissions. It was found that emission reduction policies for controlling high emission sectors of NOx and VOCs such as S2_E and S3_E were more effective for decreasing both PM2.5 and O3 in the YRD. This study shows that O3 controls will benefit from well-designed air pollution control strategies for reasonable control ratios of NOx and VOCs emissions. Full article
(This article belongs to the Special Issue Photochemical Air Pollution in Urban Regions)
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