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Satellite and Ground-Based Remote Sensing of Aerosol Optical Properties—Future Outlook...
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Satellite and Ground-Based Remote Sensing of Aerosol Optical Properties—Future Outlook and Perspectives

A special issue of Remote Sensing (ISSN 2072-4292). This special issue belongs to the section "Atmospheric Remote Sensing".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 10997

Special Issue Editor

Prof. Dr. Chang-Keun Song

E-Mail Website
Guest Editor
Department of Urban and Environmental Engineering, UNIST 50, UNIST-gil, Ulsan 44919, Republic of Korea
Interests: atmospheric quality; climate change; remote sensing; environmental satellite
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent decades, atmospheric environmental researchers and the general public have experienced remarkable progress in the field of remote sensing. In particular, advances in satellite- and ground-based remote sensing technology have contributed to overcoming the spatio-temporal coarse resolution and providing optical properties of air pollutants (e.g., aerosol optical depth and size information), which were previously considered as a limitation of in-situ measurement.

Recently, the development of new sensing instruments using various wavelengths, networking of various remote sensing technologies, and improvement of retrieval algorithms have been introduced and improved. Advances in these additional or integrated technologies call for a new direction in scientific understanding, utilization, and application.

In this regard, the purpose of this Special Issue is to provide an opportunity for the introduction and discussion of in-depth research results on potential challenges and future perspectives in satellite and ground-based remote sensing for the atmospheric environment.

Manuscripts related to the following key scientific areas and segments are encouraged for this Special Issue.

  1. Optical properties for air pollutants including aerosols observed by satellite and ground-based remote sensing;
  2. Geophysical validation of remote sensing data with other independent observations (e.g., field campaign and in-situ monitoring) and atmospheric chemistry modeling results;
  3. New technology of remote sensing in the field of air quality and public health;
  4. Advanced platforms or networks to integrate various remote sensing instruments and technologies for air pollutants;
  5. Emerging research topics (e.g., secondary organic aerosols and light-absorbing carbonaceous matters) in remote sensing science and technology.

Dr. Chang-Keun Song
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. Remote Sensing is an international peer-reviewed open access semimonthly 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 2700 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

  • aerosol optical properties
  • air pollution
  • future perspective
  • remote sensing
  • satellite
  • ground-based measurement

Published Papers (3 papers)

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Research

17 pages, 3676 KiB  
Article
Satellite-Based Diagnosis and Numerical Verification of Ozone Formation Regimes over Nine Megacities in East Asia
by Hyo-Jung Lee, Lim-Seok Chang, Daniel A. Jaffe, Juseon Bak, Xiong Liu, Gonzalo González Abad, Hyun-Young Jo, Yu-Jin Jo, Jae-Bum Lee, Geum-Hee Yang, Jong-Min Kim and Cheol-Hee Kim
Remote Sens. 2022, 14(5), 1285; https://0-doi-org.brum.beds.ac.uk/10.3390/rs14051285 - 05 Mar 2022
Cited by 13 | Viewed by 4294
Abstract
Urban photochemical ozone (O3) formation regimes (NOx- and VOC-limited regimes) at nine megacities in East Asia were diagnosed based on near-surface O3 columns from 900 to 700 hPa, nitrogen dioxide (NO2), and formaldehyde (HCHO), which were [...] Read more.
Urban photochemical ozone (O3) formation regimes (NOx- and VOC-limited regimes) at nine megacities in East Asia were diagnosed based on near-surface O3 columns from 900 to 700 hPa, nitrogen dioxide (NO2), and formaldehyde (HCHO), which were inferred from measurements by ozone-monitoring instruments (OMI) for 2014–2018. The nine megacities included Beijing, Tianjin, Hebei, Shandong, Shanghai, Seoul, Busan, Tokyo, and Osaka. The space-borne HCHO–to–NO2 ratio (FNR) inferred from the OMI was applied to nine megacities and verified by a series of sensitivity tests of Weather Research and Forecasting model with Chemistry (WRF-Chem) simulations by halving the NOx and VOC emissions. The results showed that the satellite-based FNRs ranged from 1.20 to 2.62 and the regimes over the nine megacities were identified as almost NOx-saturated conditions, while the domain-averaged FNR in East Asia was >2. The results of WRF–Chem sensitivity modeling show that O3 increased when the NOx emissions reduced, whereas VOC emission reduction showed a significant decrease in O3, confirming the characteristics of VOC-limited conditions in all of the nine megacities. When both NOx and VOC emissions were reduced, O3 decreased in most cities, but increased in the three lowest-FNRs megacities, such as Shanghai, Seoul, and Tokyo, where weakened O3 titration caused by NOx reduction had a larger enough effect to offset O3 suppression induced by the decrease in VOCs. Our model results, therefore, indicated that the immediate VOC emission reduction is a key controlling factor to decrease megacity O3 in East Asia, and also suggested that both VOC and NOx reductions may not be of broad utility in O3 abatement in megacities and should be considered judiciously in highly NOx-saturated cities in East Asia. Full article
(This article belongs to the Special Issue Satellite and Ground-Based Remote Sensing of Aerosol Optical Properties—Future Outlook and Perspectives)
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21 pages, 4814 KiB  
Article
Potential of AOD Retrieval Using Atmospheric Emitted Radiance Interferometer (AERI)
by Jongjin Seo, Haklim Choi and Youngsuk Oh
Remote Sens. 2022, 14(2), 407; https://0-doi-org.brum.beds.ac.uk/10.3390/rs14020407 - 16 Jan 2022
Cited by 3 | Viewed by 2308
Abstract
Aerosols in the atmosphere play an essential role in the radiative transfer process due to their scattering, absorption, and emission. Moreover, they interrupt the retrieval of atmospheric properties from ground-based and satellite remote sensing. Thus, accurate aerosol information needs to be obtained. Herein, [...] Read more.
Aerosols in the atmosphere play an essential role in the radiative transfer process due to their scattering, absorption, and emission. Moreover, they interrupt the retrieval of atmospheric properties from ground-based and satellite remote sensing. Thus, accurate aerosol information needs to be obtained. Herein, we developed an optimal-estimation-based aerosol optical depth (AOD) retrieval algorithm using the hyperspectral infrared downwelling emitted radiance of the Atmospheric Emitted Radiance Interferometer (AERI). The proposed algorithm is based on the phenomena that the thermal infrared radiance measured by a ground-based remote sensor is sensitive to the thermodynamic profile and degree of the turbid aerosol in the atmosphere. To assess the performance of algorithm, AERI observations, measured throughout the day on 21 October 2010 at Anmyeon, South Korea, were used. The derived thermodynamic profiles and AODs were compared with those of the European center for a reanalysis of medium-range weather forecasts version 5 and global atmosphere watch precision-filter radiometer (GAW-PFR), respectively. The radiances simulated with aerosol information were more suitable for the AERI-observed radiance than those without aerosol (i.e., clear sky). The temporal variation trend of the retrieved AOD matched that of GAW-PFR well, although small discrepancies were present at high aerosol concentrations. This provides a potential possibility for the retrieval of nighttime AOD. Full article
(This article belongs to the Special Issue Satellite and Ground-Based Remote Sensing of Aerosol Optical Properties—Future Outlook and Perspectives)
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17 pages, 5733 KiB  
Article
Ozone Continues to Increase in East Asia Despite Decreasing NO2: Causes and Abatements
by Hyo-Jung Lee, Lim-Seok Chang, Daniel A. Jaffe, Juseon Bak, Xiong Liu, Gonzalo González Abad, Hyun-Young Jo, Yu-Jin Jo, Jae-Bum Lee and Cheol-Hee Kim
Remote Sens. 2021, 13(11), 2177; https://0-doi-org.brum.beds.ac.uk/10.3390/rs13112177 - 02 Jun 2021
Cited by 23 | Viewed by 3495
Abstract
Space-borne ozone (O3) measurements have indicated consistent positive trends across the entire Asia–Pacific region despite the considerable reduction of NOx since 2000s. The rate of increase in O3 derived from lower free tropospheric column measurements was observed to be [...] Read more.
Space-borne ozone (O3) measurements have indicated consistent positive trends across the entire Asia–Pacific region despite the considerable reduction of NOx since 2000s. The rate of increase in O3 derived from lower free tropospheric column measurements was observed to be 0.21 ± 0.05 DU/decade during 2005–2018. Our space-borne-based diagnosis of the nonlinear photochemical formation regimes, NOx-limited and NOx-saturated, show that O3 chemistry is undergoing a transitional process to the NOx-limited regime throughout most of the Asian region. Nevertheless, NOx-saturated conditions persist at present in and over eight major megacities. These NOx-saturated conditions in megacities contribute to the increased O3 due to NOx reduction, which could also affect the enhanced O3 concentrations throughout the Asia–Pacific region via long-range transport. This indicates that VOC limits along with NOx reductions are needed in megacities in the short term to reduce O3 levels. Moreover, NOx saturation in major megacities will continue until 2025, according to the forecast emission scenarios from the Intergovernmental Panel on Climate Change (IPCC). These scenarios gradually shift nearly all cities to the NOx-limited regime by 2050 with the exception of few cities under IPCC RCP8.5. Thus, continued reductions in NOx will be a key factor in reducing O3 in the long term. Full article
(This article belongs to the Special Issue Satellite and Ground-Based Remote Sensing of Aerosol Optical Properties—Future Outlook and Perspectives)
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