Fine particulate matter (PM2.5) trends from land surface changes and air pollution policies in China during 1980–2020

Journal of Environmental Management, Год журнала: 2022, Номер 326, С. 116847 - 116847

Опубликована: Ноя. 25, 2022

Язык: Английский

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Application of satellite remote sensing data and random forest approach to estimate ground-level PM2.5 concentration in Northern region of Thailand

Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(38), С. 88905 - 88917

Опубликована: Июль 13, 2023

Язык: Английский

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Changes in aerosol loading before, during and after the COVID-19 pandemic outbreak in China: Effects of anthropogenic and natural aerosol

The Science of The Total Environment, Год журнала: 2022, Номер 857, С. 159435 - 159435

Опубликована: Окт. 13, 2022

Язык: Английский

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Research progress, challenges, and prospects of PM_2.5 concentration estimation using satellite data

Environmental Reviews, Год журнала: 2023, Номер 31(4), С. 605 - 631

Опубликована: Июнь 10, 2023

Satellite data are vital for understanding the large-scale spatial distribution of particulate matter (PM 2.5 ) due to their low cost, wide coverage, and all-weather capability. Estimation PM using satellite aerosol optical depth (AOD) products is a popular method. In this paper, we review estimation process based on AOD in terms sources (i.e., inversion algorithms, sets, interpolation methods), models statistical regression, chemical transport models, machine learning, combinatorial analysis), modeling validation four types cross-validation (CV) methods). We found that accuracy time-based CV lower than others. significant differences between different seasons ( p < 0.01) resolutions 0.01). explain these phenomena article. Finally, summarize research process, present challenges, future directions field. opine low-cost mobile devices combined with transfer learning or hybrid offer opportunities areas limited monitoring stations historical estimation. These methods can be good choice air pollution developing countries. The purpose study provide basic framework researchers conduct relevant research, enabling them understand current progress directions.

Язык: Английский

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Spatio-temporal changes of spring-summer dust AOD over the Eastern Mediterranean and the Middle East: Reversal of dust trends and associated meteorological effects

Atmospheric Research, Год журнала: 2022, Номер 281, С. 106509 - 106509

Опубликована: Ноя. 11, 2022

Язык: Английский

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Analysis of the Winter AOD Trends over Iran from 2000 to 2020 and Associated Meteorological Effects

Remote Sensing, Год журнала: 2023, Номер 15(4), С. 905 - 905

Опубликована: Фев. 6, 2023

High aerosol levels pose severe air pollution and climate change challenges in Iran. Although regional optical depth (AOD) trends have been analyzed during the dusty season over Iran, specific factors that are driving spatio-temporal variations winter AOD influence of meteorological dynamics on remain unclear. This study analyzes long-term Iran period 2000–2020 using updated Modern-Era Retrospective Analysis for Research Applications version 2 (MERRA-2) Moderate Resolution Imaging Spectroradiometer (MODIS) datasets. Our results showed exhibited a significant upward trend 2000–2010 followed by decrease 2010–2018. We found important this arid region due to multiple mechanisms which also affect following spring/summer period. Ground-based observations from Aerosol Robotic Network data (AERONET) Middle East display comparable those both MERRA-2 MODIS indicated aeolian dust associated with it play central role changes. Furthermore, downward sea level pressure (SLP) early (2000–2010) induced hot dry winds originated desert regions Iraq Arabia blew toward reducing relative humidity (RH) raising temperature thus promoting soil drying accumulation. In contrast, increase SLP late (2010–2018) cold wet northwestern increased RH lowered temperature, AOD. suggests changes highly influenced seasonal variabilities. These highlight importance examining wintertime climatic their effects East.

Язык: Английский

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Space–Time Evaluation of Atmospheric Black Carbon in Chinese Urban Environment: Influence of Land Use and Air Pollution Policies

Earth Systems and Environment, Год журнала: 2024, Номер 8(2), С. 501 - 519

Опубликована: Фев. 28, 2024

Язык: Английский

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Long-Term Dynamics of Atmospheric Sulfur Dioxide in Urban and Rural Regions of China: Urbanization and Policy Impacts

Remote Sensing, Год журнала: 2024, Номер 16(2), С. 391 - 391

Опубликована: Янв. 18, 2024

High levels of sulfur dioxide (SO2) due to human activities pose a serious air pollution issue in China, especially urban agglomerations. However, limited research has investigated the impact anthropogenic emissions on higher SO2 concentrations regions compared rural areas China. Here, we analyzed trends from 1980 2021 China using Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) dataset. column Copernicus Atmosphere Monitoring Service (CAMS) Ozone Instrument (OMI) during years 2007–2021 were also examined validation comparison purposes. Eight representative areas, including four (Pearl River Delta [PRD], Beijing-Tianjin-Hebei [BTH], Yangtze [YRD], Sichuan Basin [SCB]) (Northeast Region [NER], Mongolian [MR], West [WR], Tibetan Plateau [TR]) selected analysis. Overall, significant but fluctuating increase over was observed 1980–2021. During 1980–1997 2000–2010, there an concentration, while 1997–2000 2010–2021, decreasing trend observed. The average concentration approximately 16 times than background. We found that dynamics highly associated with expansion population density, gross domestic product. Nonetheless, since 2007, have exhibited downward trend, which is mainly attributed policies implemented by Chinese government. Our findings highlight need further studies regional climate change

Язык: Английский

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Unveiling global land fine- and coarse-mode aerosol dynamics from 2005 to 2020 using enhanced satellite-based monthly inversion data

Environmental Pollution, Год журнала: 2024, Номер 348, С. 123838 - 123838

Опубликована: Март 21, 2024

Язык: Английский

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Comprehensive Assessment and Analysis of the Current Global Aerosol Optical Depth Products

Remote Sensing, Год журнала: 2024, Номер 16(8), С. 1425 - 1425

Опубликована: Апрель 17, 2024

Aerosol Optical Depth (AOD) is one of the most important optical properties aerosols that may affect energy budgets our Earth–atmosphere system significantly. Currently, while regional and even global AOD knowledge has been given by various satellites or models, these products are still fraught with uncertainties. In this study, sophisticated satellite-derived product from MODIS (MODerate resolution Imaging Spectral-radiometer) two state-of-the-art model-based CAMS (Copernicus Atmosphere Monitoring Service) MERRA-2 (Modern-Era Retrospective analysis for Research Application Version 2), based on AERONET measurements 2000–2022, analyzed spatial distribution characteristics AOD. Then using Mann-Kendall (MK) trend test, changing trends revealed three were also computed analyzed. The accuracies reliabilities derived discussed concluded finally. Our study demonstrates have wider applicability, matching best globally, only reliable in North America, South Europe. Through comparative trends, we found MODIS, CAMS, consistently exhibited decreasing eastern Asia, Europe, America. On other hand, different showed increasing regions like West Africa, suggesting their limited reliability. reliability assessment shows 41.45% areas consistent among products, approximately 3.2% showing significant results. When site validation, proportions sites highest at 64.56% 46.84% respectively. changes mainly distributed Australia, Central This provides new insights validating aerosol remote sensing potential to enhance future monitoring evaluation methods products.

Язык: Английский

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