Evaluating TROPOMI and MODIS performance to capture the dynamic of air pollution in São Paulo state: A case study during the COVID-19 outbreak

Rudke, Anderson Paulo; Martins, Jorge Alberto; Hallak, Ricardo; Martins, Leila Droprinchinski; Almeida, Daniela S. de; Beal, Alexandra; Freitas, Edmílson Dias de; Andrade, Mauro; Koutrakis, Petros; Albuquerque, T. T. A.

doi:10.1016/j.rse.2023.113514

Cited by 18 publications

(4 citation statements)

References 125 publications

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“…The results obtained from independent remote sensing techniques confirmed the findings of surface concentration and extended to the vertical density the specific temporal behavior of NO 2 in this area. Furthermore, the retrievals were consistent with the results obtained in [54], where the same NO 2 temporal trends were retrieved from remote sensing and in situ measurements in rural areas.…”

Section: Tropospheric No2 In the Tiber Valleysupporting

confidence: 87%

Characterization of Nitrogen Dioxide Variability Using Ground-Based and Satellite Remote Sensing and In Situ Measurements in the Tiber Valley (Lazio, Italy)

et al. 2023

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The spatial–temporal distributions of nitrogen dioxide (NO2) in a rural area of Tiber valley were evaluated over one year (March 2022–February 2023) using remote sensing and in situ measurements. Surface concentration monitoring was conducted using a Pandora-2s spectrometer and a chemiluminescence analyzer operated at the Liberti Observatory (CNR-IIA). In spring, when the growing season and the agricultural activities increase, NO2 peaks were detectable by the Pandora but not by the in situ analyzer. The tropospheric Pandora and TROPOMI VCD products showed similar temporal patterns as those of the analyzer at the Observatory. High TROPOMI VCD levels in spring were detected at the Observatory and at six sites selected as representative of rural, residential, and industrial environments. WRF simulations found that high pollution events, observed by the Pandora and analyzer, occurred in calm wind conditions, favouring the accumulation of NO2 locally emitted. The complementary dataset provided by remote sensing and in situ techniques efficiently captured the spatial–temporal NO2 variability in a rural site exposed to low emission sources, thus supporting future decisional policies and actions.

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Section: Tropospheric No2 In the Tiber Valleysupporting

confidence: 87%

Characterization of Nitrogen Dioxide Variability Using Ground-Based and Satellite Remote Sensing and In Situ Measurements in the Tiber Valley (Lazio, Italy)

et al. 2023

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“…Several studies have investigated the relationship between AOD and PM 2.5 measured at the surface (e.g., [10][11][12]), and a few of these have derived empirical formulas that can be used to quantitatively determine PM 2.5 concentrations based on measured AOD (e.g., [12]). However, due to the large uncertainties associated with the parameters included in these statistical approaches, further research is still needed before they can be universally used (e.g., [13,14]).…”

Section: Introductionmentioning

confidence: 99%

The Relation between Atmospheric Aerosol Concentration and SARS-CoV-2 Variants’ Infection and Mortality Rates in the United States: A Remote-Sensing Perspective

Elshorbany,

Mixson,

Marcum

et al. 2024

Sustainability

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Numerous studies have highlighted the health benefits associated with reducing aerosol particles and other pollutants. Recent studies have shown a positive correlation between exposure to aerosol particles and COVID-19 cases. In this study, we investigate the relationship between aerosol particle concentration and COVID-19 variants’ infection and mortality rates. Remote-sensing data on aerosol optical depth (AOD), a surrogate for atmospheric aerosol levels, were collected and analyzed in three regions within the states of California, Illinois, and North and South Carolina. These regions were selected to reflect the variability in aerosol concentration and anomalies during the COVID-19 period (2020–2022) compared to a reference period (2010–2019). We found consistent positive linear correlations across most regions between COVID-19 mortality rates and AOD levels below 0.2. These correlations were found to be independent of the change in aerosol levels relative to the reference period. In North and South Carolina, the Delta variant was associated with not only a high mortality rate but also a steeper increase in mortality rate per AOD of 39.6 ± 1.5 (R2 = 0.87) compared to Alpha at 10.5 ± 0.3 (R2 = 0.85). However, due to the lower mortality rate of the Delta variant compared to the Alpha variant in Illinois, the Delta variant has a lower correlation slope of 28.3 ± 1 (R2 = 0.94) compared to the Alpha variant at 52.1 ± 1.8 (R2 = 0.78). No correlation between mortality rate and AOD was observed for the Omicron variants in any of the investigated regions except in California where a weak positive correlation was evident. Our findings establish a compelling link between aerosol concentrations and SARS-CoV-2 infection and mortality. Our results underscore the urgent need for further research to elucidate the underlying mechanisms and broader implications, leading to more sustainable solutions to curb the airborne transmission of COVID-19 viruses and other viral infections in general.

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“…In recent years, the rapid development of industrialization has led to a sharp increase in the discharge of global industrial waste gas and wastewater. Natural waters contain pollutants such as heavy metals and organic substances emitted by humans [1] ; Air pollution is also serious, acid rain, smog and other meteorological frequent [2] , causing great harm and loss to human health [3] and social economy.…”

Section: Introductionmentioning

confidence: 99%

Preparation of modified TiO2 and its photocatalytic properties

2023

AJMC

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In this chapter, tetrabutyl titanate was used as the titanium source, and the photocatalytic performance of commercial TiO 2 and self-made TiO 2 was compared by sol-gel method. Since ready-made commercial TiO 2 is not easy to be doped and modified, this chapter also performs alkali solution surface modification at the same time as self-made TiO 2 (that is, the TiO 2 to be modified is immersed in alkali solution at different pH values and then dried), and the photocatalytic performance of the two before and after the surface modification of alkali solution is compared. In order to improve the photocatalytic performance of self-made TiO 2 , this chapter modifies the iron doping of self-made TiO 2 during the preparation process to enhance its photocatalytic performance. After iron doping modification of TiO 2 , in order to further improve its performance, the modified sample was modified with alkali solution surface. In this paper, the microscopic characterization and nitrogen and oxygen catalytic performance tests of each sample were carried out, and the results showed that the photocatalytic performance of self-prepared TiO 2 was significantly better than that of commercial TiO 2 . Among the TiO 2 modified by different pH solutions, the catalytic performance was the best at pH 11.5, and the photocatalytic performance of Fe-doped TiO 2 was also improved to varying degrees compared with pure TiO 2 , among which Fe doping 0.5% contributed the most to the photocatalytic performance. After the surface modification of Fe (0.5%)-TiO 2 with the best doping amount by alkali solution, the photocatalytic performance was also improved.

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Evaluating TROPOMI and MODIS performance to capture the dynamic of air pollution in São Paulo state: A case study during the COVID-19 outbreak

Cited by 18 publications

References 125 publications

Characterization of Nitrogen Dioxide Variability Using Ground-Based and Satellite Remote Sensing and In Situ Measurements in the Tiber Valley (Lazio, Italy)

Characterization of Nitrogen Dioxide Variability Using Ground-Based and Satellite Remote Sensing and In Situ Measurements in the Tiber Valley (Lazio, Italy)

The Relation between Atmospheric Aerosol Concentration and SARS-CoV-2 Variants’ Infection and Mortality Rates in the United States: A Remote-Sensing Perspective

Preparation of modified TiO2 and its photocatalytic properties

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