Wintertime Urban Photochemical Air Pollution in Asia

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

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3204

Special Issue Editor


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Guest Editor
Climate & Air Quality Research Department, National Institute of Environmental Research, Incheon 22689, Korea
Interests: air pollution–meteorology interaction

Special Issue Information

Dear Colleagues,

Urban air quality is subject to local effects such as heavy traffic, complex topography, local circulation, etc., as well as synoptic circulation and regional transport. If the city is located along a coast and large point sources are situated nearby, things become more complicated. Under this circumstance, three-dimensional observation and simulation are required to characterize its air pollution. For instance, a plume from a coastal stack can be driven inland by sea-breeze circulation, sometimes fumigating into the ground, or passing over it. Air pollution, especially in winter, seems less complex than other seasons, as it has the least photochemistry. However, contrary to our expectation, significant secondary PM2.5 species have been occasionally found at winter haze events. Thus, understanding wintertime urban photochemical air pollution is of importance for air quality management and eventually public health. Any kind of remote sensing (e.g., satellite, Pandora Spectrometer Instrument, MAX-DOAS, sunphotometer, LIDAR) and high-resolution simulation is recommended in this issue.

Dr. Lim-Seok Chang
Guest Editor

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Keywords

  • wintertime urban air pollution
  • methods of observation and modeling
  • environmental satellite
  • ground remote sensing
  • local circulation (land-sea breeze, channel effect, etc.)
  • wintertime photochemistry

Published Papers (1 paper)

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Research

18 pages, 39224 KiB  
Article
Total Ozone Trends in East Asia from Long-Term Satellite and Ground Observations
by Daegeun Shin, Young-Suk Oh, Wonick Seo, Chu-Yong Chung and Ja-Ho Koo
Atmosphere 2021, 12(8), 982; https://doi.org/10.3390/atmos12080982 - 29 Jul 2021
Cited by 6 | Viewed by 2692
Abstract
The ozone concentration in the atmosphere has been recovering with the reduction in atmospheric ozone-depleting substances (ODS). However, ODS remain in the atmosphere for long periods, slowing recovery. Furthermore, greenhouse gas-induced climate change complicates ozone recovery. East Asia is a significant contributor to [...] Read more.
The ozone concentration in the atmosphere has been recovering with the reduction in atmospheric ozone-depleting substances (ODS). However, ODS remain in the atmosphere for long periods, slowing recovery. Furthermore, greenhouse gas-induced climate change complicates ozone recovery. East Asia is a significant contributor to global climate change due to the increase in industrialization and the presence of complex climate conditions. We investigated ozone variations in East Asia using total column ozone data based on satellite and ground observations and compared the results and trends derived from a multi-linear regression (MLR) model. We found that the MLR model has relatively poor explanatory power for recent extraterrestrial and dynamical proxies, but the uncertainty can be reduced using monthly data and atmospheric proxies. The ozone trend in East Asia had the greatest increase in the vicinity of the Korean Peninsula and Manchuria from 1997 to 2017 (~1% per decade). Similarly, the trend derived from Brewer spectrophotometer data was 1.02 ± 1.45% per decade in Pohang and 1.27 ± 0.85% per decade in Seoul. When the analysis period was extended to 2020, the impact of atmospheric variability was greater, suggesting that recent climate change can increasingly contribute to total ozone variability. Full article
(This article belongs to the Special Issue Wintertime Urban Photochemical Air Pollution in Asia)
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