Articles | Volume 22, issue 24
https://doi.org/10.5194/acp-22-15703-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-15703-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Dec 2022
Research article |
| 15 Dec 2022
| 15 Dec 2022
Aerosol optical depth regime over megacities of the world
Kyriakoula Papachristopoulou
CORRESPONDING AUTHOR
Laboratory of Climatology and Atmospheric Environment, Sector of
Geography and Climatology, Department of Geology and Environment, National
and Kapodistrian University of Athens, Athens 15784, Greece
Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing,
National Observatory of Athens (IAASARS/NOA), Athens 15236, Greece
Department of Physics, ETH Zurich, Zurich 8093, Switzerland
Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center (PMOD/WRC), Davos 7260, Switzerland
Ioannis-Panagiotis Raptis
Laboratory of Climatology and Atmospheric Environment, Sector of
Geography and Climatology, Department of Geology and Environment, National
and Kapodistrian University of Athens, Athens 15784, Greece
Antonis Gkikas
Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing,
National Observatory of Athens (IAASARS/NOA), Athens 15236, Greece
Ilias Fountoulakis
Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing,
National Observatory of Athens (IAASARS/NOA), Athens 15236, Greece
Akriti Masoom
Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center (PMOD/WRC), Davos 7260, Switzerland
Stelios Kazadzis
Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center (PMOD/WRC), Davos 7260, Switzerland
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Cited
30 citations as recorded by crossref.
- Impacts of summertime photochemical aging on the physicochemical properties of aerosols in a Paris suburban forest region C. Yu et al.
- Aerosol optical depth climatology from the high-resolution MAIAC product over Europe: differences between major European cities and their surrounding environments L. Di Antonio et al.
- Urban Pollution Burden in Sub-Saharan African (SSA) Cities: Characterizing PM2.5, PM10, and Black Carbon in Two Contrasting Environments in Accra, Ghana J. Nimo et al.
- Peculiar weather patterns effects on air pollution and COVID-19 spread in Tokyo metropolis M. Zoran et al.
- Evolution of tropospheric aerosols over central China during 2010–2024 as observed by lidar D. Jing et al.
- Multi-Decadal Trends in Aerosol Optical Depth of the Main Aerosol Species Based on MERRA-2 Reanalysis: A Case Study in the Baltic Sea Basin E. Mancinelli et al.
- Comparison of satellite and ground-based measurements of erythemal dose from two tropical sites: Belo Horizonte (20° S, 44° W, 858 m) and Saint-Denis La Reunion (21° S, 55° E, 85 m) A. Silva
- Can Air Quality Data Predict Stunting Prevalence? G. Perdananugraha et al.
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- Demonstration of a Simplified, Two-Wavelength Optical Approach to Measuring Nitrogen Dioxide in Cities E. Halpin et al.
- Identifying the Causes of Air Pollution in the Tehran Metropolis-Iran and Policy Recommendations for Sustainability A. Ghahremanlou & D. Ghahremanlou
- Dust Content Modulation and Spring Heat Waves in Senegal (2003–2022) S. Diouf et al.
- Impact of bauxite mining on vegetation health in Jamaica: NDVI and aerosol optical depth analysis using remote sensing D. Wilson et al.
- Assessments for the Effect of Mineral Dust on the Spring Heat Waves in the Sahel P. Niane et al.
- Photovoltaics Energy Potential in the Largest Greek Cities: Atmospheric and Urban Fabric Effects, Climatic Trends Influences and Socio-Economic Benefits S. Vigkos & P. Kosmopoulos
- Air Pollution to Atmospheric Warming: Effects of Increasing Anthropogenic Aerosols on South Asia’s Climate S. Ramachandran et al.
- Improving WRF-Chem aerosol optical depth prediction over India using artificial neural network A. Khan et al.
- Assessment of aerosol optical depth forecast for day-ahead clear-sky direct irradiance X. Hou et al.
- Optical and physical characteristics of aerosols over Asia: AERONET, MERRA-2 and CAMS K. Ansari & S. Ramachandran
- Contrasting nature of aerosols over South Asian cities and its surrounding environment A. Pandey et al.
- Variations in polycyclic aromatic hydrocarbons concentrations and their contribution to aerosol optical depth during the COVID-19 outbreak: A study in Yokohama using generalized additive model W. Jing et al.
- Atmospheric dust and air quality over large-cities and megacities of the world E. Proestakis et al.
- Impact of atmospheric condition on aerosol optical properties in urban and rural environment S. Kłapiński et al.
- Improving AOD Algorithm Evaluation: A Spatial Matching Method for Minimizing Quality Control Bias B. Du et al.
- Transported dust modulates aerosol pollution domes over rapidly urbanizing Indian cities S. Sethi & V. Vinoj
- Satellite-derived climatology of paddy-residue fires and post-monsoon aerosol loading in Punjab’s Malwa region (2000–2024) N. Dwivedi et al.
- Aerosol optical depths over four countries: 40-year spatial-temporal characteristics and recent trends A. Mohammed & X. Zhang
- 20 years of columnar aerosol properties at Valencia area (Eastern Spain) by ground-based sun-photometry M. Garcia-Suñer et al.
- Influence of changes in anthropogenic and natural sources on global aerosol optical depth during COVID-19 lockdown: Ground-based observations, satellites, models S. Ramachandran & K. Ansari
- The Difference in MODIS Aerosol Retrieval Accuracy over Chinese Forested Regions M. Ahmed et al.
30 citations as recorded by crossref.
- Impacts of summertime photochemical aging on the physicochemical properties of aerosols in a Paris suburban forest region C. Yu et al.
- Aerosol optical depth climatology from the high-resolution MAIAC product over Europe: differences between major European cities and their surrounding environments L. Di Antonio et al.
- Urban Pollution Burden in Sub-Saharan African (SSA) Cities: Characterizing PM2.5, PM10, and Black Carbon in Two Contrasting Environments in Accra, Ghana J. Nimo et al.
- Peculiar weather patterns effects on air pollution and COVID-19 spread in Tokyo metropolis M. Zoran et al.
- Evolution of tropospheric aerosols over central China during 2010–2024 as observed by lidar D. Jing et al.
- Multi-Decadal Trends in Aerosol Optical Depth of the Main Aerosol Species Based on MERRA-2 Reanalysis: A Case Study in the Baltic Sea Basin E. Mancinelli et al.
- Comparison of satellite and ground-based measurements of erythemal dose from two tropical sites: Belo Horizonte (20° S, 44° W, 858 m) and Saint-Denis La Reunion (21° S, 55° E, 85 m) A. Silva
- Can Air Quality Data Predict Stunting Prevalence? G. Perdananugraha et al.
- Optical and particulate properties of dust aerosols in El Paso, Texas G. Rodriguez Ortiz et al.
- Demonstration of a Simplified, Two-Wavelength Optical Approach to Measuring Nitrogen Dioxide in Cities E. Halpin et al.
- Identifying the Causes of Air Pollution in the Tehran Metropolis-Iran and Policy Recommendations for Sustainability A. Ghahremanlou & D. Ghahremanlou
- Dust Content Modulation and Spring Heat Waves in Senegal (2003–2022) S. Diouf et al.
- Impact of bauxite mining on vegetation health in Jamaica: NDVI and aerosol optical depth analysis using remote sensing D. Wilson et al.
- Assessments for the Effect of Mineral Dust on the Spring Heat Waves in the Sahel P. Niane et al.
- Photovoltaics Energy Potential in the Largest Greek Cities: Atmospheric and Urban Fabric Effects, Climatic Trends Influences and Socio-Economic Benefits S. Vigkos & P. Kosmopoulos
- Air Pollution to Atmospheric Warming: Effects of Increasing Anthropogenic Aerosols on South Asia’s Climate S. Ramachandran et al.
- Improving WRF-Chem aerosol optical depth prediction over India using artificial neural network A. Khan et al.
- Assessment of aerosol optical depth forecast for day-ahead clear-sky direct irradiance X. Hou et al.
- Optical and physical characteristics of aerosols over Asia: AERONET, MERRA-2 and CAMS K. Ansari & S. Ramachandran
- Contrasting nature of aerosols over South Asian cities and its surrounding environment A. Pandey et al.
- Variations in polycyclic aromatic hydrocarbons concentrations and their contribution to aerosol optical depth during the COVID-19 outbreak: A study in Yokohama using generalized additive model W. Jing et al.
- Atmospheric dust and air quality over large-cities and megacities of the world E. Proestakis et al.
- Impact of atmospheric condition on aerosol optical properties in urban and rural environment S. Kłapiński et al.
- Improving AOD Algorithm Evaluation: A Spatial Matching Method for Minimizing Quality Control Bias B. Du et al.
- Transported dust modulates aerosol pollution domes over rapidly urbanizing Indian cities S. Sethi & V. Vinoj
- Satellite-derived climatology of paddy-residue fires and post-monsoon aerosol loading in Punjab’s Malwa region (2000–2024) N. Dwivedi et al.
- Aerosol optical depths over four countries: 40-year spatial-temporal characteristics and recent trends A. Mohammed & X. Zhang
- 20 years of columnar aerosol properties at Valencia area (Eastern Spain) by ground-based sun-photometry M. Garcia-Suñer et al.
- Influence of changes in anthropogenic and natural sources on global aerosol optical depth during COVID-19 lockdown: Ground-based observations, satellites, models S. Ramachandran & K. Ansari
- The Difference in MODIS Aerosol Retrieval Accuracy over Chinese Forested Regions M. Ahmed et al.
Saved (final revised paper)
Discussed (final revised paper)
Latest update: 30 Apr 2026
Short summary
Megacities' air quality is determined by atmospheric aerosols. We focus on changes over the last two decades in the 81 largest cities, using satellite data. European and American cities have lower aerosol compared to African and Asian cities. For European, North American and East Asian cities, aerosols are decreasing over time, especially in China and the US. In the remaining cities, aerosol loads are increasing, particularly in India.
Megacities' air quality is determined by atmospheric aerosols. We focus on changes over the last...
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