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Atmosphere
Special Issues
Applications of Remote Sensing for Studying Urban Air Quality
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Applications of Remote Sensing for Studying Urban Air Quality

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Atmospheric Techniques, Instruments, and Modeling".

Deadline for manuscript submissions: closed (15 April 2022) | Viewed by 2151

Special Issue Editors

Prof. Dr. Klaus Schäfer

E-Mail Website
Guest Editor
Atmospheric Physics Consultant, 82467 Garmisch-Partenkirchen, Germany
Interests: air quality; air pollutants; measurement techniques; meteorological influences; atmospheric data analyses
Special Issues, Collections and Topics in MDPI journals
Thilo Erbertseder

E-Mail Website1 Website2
Guest Editor
German Remote Sensing Data Center , German Aerospace Center (DLR), 82234 Weßling, Germany
Interests: satellite remote sensing; air quality and health; air pollution; urban climate under change

Special Issue Information

Dear Colleagues,

Air quality is a key for human health protection. Urban areas include a huge number of humans that can be affected by air pollution. High-resolution air quality data are necessary in order to introduce measures for the reduction of air pollution sources. Current ground-based air quality monitoring networks are cost intensive, and consequently the required data availability cannot be provided. Since remote sensing methods have long been applied from the ground, flying platforms and satellites, they are required to close this gap. The potential and limitations of remote sensing methods are well known, but it is not clear if these data are used in all possible tasks already. This Special Issue aims to present more detailed information about the current and planned applications of remote sensing for studying detect urban air quality and related aspects in order to support the improvement of urban air quality and quality of life.  

Prof. Dr. Klaus Schäfer
Thilo Erbertseder
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

  • Remote sensing
  • Urban air quality
  • Air pollution
  • Air pollution sources
  • Human health

Published Papers (1 paper)

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Research

16 pages, 7784 KiB  
Article
Long-Term (2017–2020) Aerosol Optical Depth Observations in Hohhot City in Mongolian Plateau and the Impacts from Different Types of Aerosol
by Yongjing Ma, Yongli Tian, Yuanzhe Ren, Zifa Wang, Lin Wu, Xiaole Pan, Yining Ma and Jinyuan Xin
Atmosphere 2022, 13(5), 737; https://doi.org/10.3390/atmos13050737 - 05 May 2022
Cited by 4 | Viewed by 1555
Abstract
Aerosol optical depth (AOD) measurements for 2017–2020 in urban Hohhot of the Mongolian plateau, a transition zone between the depopulated zone and East Asian urban agglomeration, were analyzed for the first time. Results show that annual AOD500 and Ångström exponent α440-675 [...] Read more.
Aerosol optical depth (AOD) measurements for 2017–2020 in urban Hohhot of the Mongolian plateau, a transition zone between the depopulated zone and East Asian urban agglomeration, were analyzed for the first time. Results show that annual AOD500 and Ångström exponent α440-675 were 0.36 ± 0.09 and 1.11 ± 0.16 (2017), 0.41 ± 0.12 and 0.90 ± 0.28 (2018), 0.38 ± 0.09 and 1.13 ± 0.24 (2019), 0.38 ± 0.12 and 1.17 ± 0.22 (2020), respectively, representing a slightly polluted level with a mixed type of coarse dust aerosol and a fine urban/industrial aerosol. Throughout the year, depopulated-zone continental air flows predominated in Hohhot (i.e., NW-quadrant wind), accounting for 82.12% (spring), 74.54% (summer), 63.61% (autumn), and 100% (winter). The clean and strong NW-quadrant air flows induced by the south movement of a Siberian anticyclone resulted in a low 500-nm AOD of 0.30 ± 0.29, 0.20 ± 0.15, 0.24 ± 0.29, and 0.13 ± 0.08 from spring to winter. Meanwhile, the local emissions from Hohhot city, as well as anthropogenic urban/industrial aerosols transported by southern and western air masses, originating from southern urban agglomeration and western industrial cities (Baotou, Wuhai, etc.), contributed to the highest aerosol loading, with significant transformation rates of the secondary aerosols Sulfate-Nitrate-Ammonium (SNA) of 47.45%, 57.39%, 49.88%, and 45.16–47.36% in PM2.5 for each season. The extinction fraction of fine aerosols under these anthropogenic trajectories can be as high as 80%, and the largest fine aerosol size was around 0.2–0.25 μm. Dust aerosols were suspending in urban Hohhot all year, although at different levels for different seasons, and the extinction fraction of dust aerosol during sandstorms was generally higher than 70%. Full article
(This article belongs to the Special Issue Applications of Remote Sensing for Studying Urban Air Quality)
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