Concurrent Heat Waves and Extreme Ozone (O3) Episodes: Combined Atmospheric Patterns and Impact on Human Health

Khomsi, Kenza; Chelhaoui, Youssef; Alilou, Soukaina; Souri, Rania; Najmi, Houda; Souhaili, Zineb

doi:10.3390/ijerph19052770

Cited by 16 publications

(9 citation statements)

References 44 publications

(84 reference statements)

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“…However, due to the continuous emission of nitrogen oxides (NOx), volatile organic compounds (VOCs) and the climatic change, the ozone level has already increased to a global yearly average of 40 ppb 14 . Local extreme ozone events have been reported for industrial and urban areas of e.g., Mexico, Bangladesh, Morocco, and China [15][16][17][18] . Ozone reached in Mexico a concentration of up to 210 ppb (that lasted an hour) and the highest mean value measured over 10 h exceeded 170 ppb 15 .…”

mentioning

confidence: 99%

Ozone exposure disrupts insect sexual communication

et al. 2023

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Insect sexual communication often relies upon sex pheromones. Most insect pheromones, however, contain carbon-carbon double bonds and potentially degrade by oxidation. Here, we show that frequently reported increased levels of Anthropocenic ozone can oxidize all described male-specific pheromones of Drosophila melanogaster, resulting in reduced amounts of pheromones such as cis-Vaccenyl Acetate and (Z)−7-Tricosene. At the same time female acceptance of ozone-exposed males is significantly delayed. Interestingly, groups of ozone-exposed males also exhibit significantly increased levels of male-male courtship behaviour. When repeating similar experiments with nine other drosophilid species, we observe pheromone degradation and/or disrupted sex recognition in eight of them. Our data suggest that Anthropocenic levels of ozone can extensively oxidize double bonds in a variety of insect pheromones, thereby leading to deviations in sexual recognition.

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confidence: 99%

Ozone exposure disrupts insect sexual communication

et al. 2023

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“…Wavelet analysis is a method based on Fourier analysis to display the localized characteristics of the analyzed object from both the time and frequency domains, and is used to study the correlation between two serial data on multiple time scales. Its coefficient can be calculated from the wavelet energy spectrum by using the following equation (Khomsi et al 2022 ): where Y and Z are the data sequences, R 2 YZ (s) is the wavelet coherence coefficient, W i YZ (s) is the wavelet cross-spectrum of the data sequence YZ , W i Y and W i Z are the wavelet coefficients of the data sequences Y and Z , respectively, and "< >" is the smooth function of the wavelet energy spectrum. The wavelet toolbox in MATLAB was used for computations.…”

Section: Methodsmentioning

confidence: 99%

“…The average life expectancy of residents in northern China is estimated to be 5.5 years lower than that in southern China, mainly due to the increased mortality from cardiopulmonary diseases due to PM 2.5 exposure (Xu et al 2017 ). In addition, once the ozone (O 3 ) concentration is exceeded, it becomes a primary air pollutant, which is mainly formed by complex photochemical interactions triggered by sunlight and nitrogen oxides (NOx) (Khomsi et al 2022 ). According to the 2015 Global Burden of Disease Study, O 3 ranked 33rd among the risk factors for premature death and is a major contributor to 254,000 deaths worldwide (Hakim et al 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Assessment of air quality before and during the COVID-19 and its potential health impacts in an arid oasis city: Urumqi, China

Sun

Aishan

Halik

et al. 2022

Stoch Environ Res Risk Assess

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As a key node city of the “Silk Road Economic Belt” Urumqi has been listed as one of the ten most polluted cities in the world, posing a serious threat to the urban environment and residents' health. This study analyzed the air quality before and during the COVID-19 (Coronavirus disease 2019) pandemic and its potential health effects based on the data of PM 2.5 , PM 10 , SO 2 , NO 2 , CO, and O 3 _8h levels from 10 air quality monitoring stations in Urumqi from January 1, 2017, to December 31, 2021. As per the results, the concentrations of the air pollutants PM 2.5 , PM 10 , SO 2 , NO 2 , CO, and O 3 _8h in Urumqi from 2017 to 2021 showed a cyclical trend, and the implementation of COVID-19 prevention and control measures could effectively reduce the concentration(ρ) of air pollutants. The mean value of ρ(PM 2.5 ) decreased from 2017 to 2021, whereas ρ(O 3 _8h) showed a waveform change trend (increased in 2017–2018, decreased in 2018–2020, and increased after 2020). Meanwhile, the maximum annual average values of ρ(PM 2.5 ) and ρ(O 3 _8h) for the six monitoring stations during 2017–2021 occurred at sites S2 (74.37 µg m −3 ) and S6 (91.80 µg m −3 ), respectively; rapid industrialization had a greater impact on PM 2.5 and O 3 _8h concentrations compared to commercial and residential areas. In addition, the air quality index data series can characterize the fluctuation trend of PM 2.5 . The high pollution levels (Class IV and V) of the air pollutants PM 2.5 and O 3 _8h in Urumqi have been decreasing annually, and good days can account for 80–95% of the total number of days in the year, indicating that the number of days with a potential threat to residents' health is gradually decreasing. Therefore, more attention should be paid in controlling and managing air pollution in Urumqi.

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“…The average life expectancy of residents in northern China is estimated to be 5.5 years lower than that in southern China, mainly due to the increased mortality from cardiopulmonary diseases due to PM 2.5 exposure (Xu et al 2017). In addition, once the ozone (O 3 ) concentration is exceeded, it also becomes one of the primary air pollutants, which is mainly formed by complex photochemical interactions triggered by sunlight and nitrogen oxides (NOx) (Khomsi et al 2022). According to the 2015 Global Burden of Disease Study, O 3 ranked 33rd among the risk factors for premature death and was a major contributor to 254,000 deaths worldwide (Hakim et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Assessment of air quality before and during the COVID-19 and its potential health impacts in an arid oasis city: Urumqi, China

Sun

Aishan

Halik

et al. 2022

Preprint

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Air pollution has become one of the major environmental concerns to academia and urban residents. As a key megacity city of the "Silk Road Economic Belt", Urumqi has been listed as one of the ten most polluted cities in the world, posing a serious threat to the urban environment and residents' health. Therefore, the assessment of air pollution and its health impact on urban residents is urgently required for promoting the sustainable development of the city. This study analyzed the temporal and spatial changes in the concentration of major air pollutants in Urumqi and its response to epidemic prevention and control measures based on the data of PM2.5, PM10, SO2, NO2, CO, and O3_8h from 10 air quality monitoring stations in Urumqi from January 1, 2017, to December 31, 2021, mainly focusing on the temporal and spatial variation characteristics of PM2.5 and O3_8h concentrations, changes in pollution levels and their potential risks on human health. The results showed that the concentrations of air pollutants PM2.5, PM10, SO2, NO2, CO, and O3_8h at various air quality monitoring sites from 2017 to 2021 showed a cyclical trend, and the implementation of the government's strict COVID-19 prevention and control measures had a significant effect on the reduction of air pollutant concentrations. The mean value of ρ(PM2.5) decreased from 2017 to 2021, while ρ(O3_8h) showed a waveform change trend (increased in 2017–2018, decreased in 2018–2020, and increased after 2020 ). In terms of the distribution area, the variation of ρ(PM2.5) and ρ(O3_8h) were greater in industrial areas than in commercial and residential areas. Continuous wavelet coherence exists between AQI and PM2.5 and O3_8h at each site during the period from January 2018 to December 2020, and AQI and PM2.5 were positively correlated. The high pollution levels (grades IV and V) of air pollutants PM2.5 and O3_8h in Urumqi decreased year by year, indicating that the number of days with potential threats to residents' health is gradually decreasing. Therefore, more attention should be paid to the control and governance of air pollution in Urumqi.

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Concurrent Heat Waves and Extreme Ozone (O3) Episodes: Combined Atmospheric Patterns and Impact on Human Health

Cited by 16 publications

References 44 publications

Ozone exposure disrupts insect sexual communication

Ozone exposure disrupts insect sexual communication

Assessment of air quality before and during the COVID-19 and its potential health impacts in an arid oasis city: Urumqi, China

Assessment of air quality before and during the COVID-19 and its potential health impacts in an arid oasis city: Urumqi, China

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