Effect of springtime thermal forcing over Tibetan Plateau on summertime ozone in Central China during the period 1950–2019

Wang, Yuexuanzi; Yan, Yingying; Duan, Kunyu; Kong, Shaofei; Lin, Jintai; Zheng, Huang; Song, Aili; Zhang, Zexuan

doi:10.1016/j.atmosres.2021.105735

Cited by 9 publications

(3 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 68 ] Seasonal differences in urban ozone concentrations are mainly influenced by temperature, and we observe that peaks in O 3 concentrations occur during the summer months when temperatures are higher, due to the favorable conditions for O 3 formation provided by intense solar radiation and rising temperatures. [ 69 ] This effect is particularly pronounced in the cities of northern, eastern, and northeastern China. This finding aligns with the results of the He et al.…”

Section: Discussionmentioning

confidence: 99%

Toward Better and Healthier Air Quality: Global PM_2.5 and O₃ Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Liu,

He,

et al. 2024

Global Challenges

View full text Add to dashboard Cite

To reduce the high burden of disease caused by air pollution, the World Health Organization (WHO) released new Air Quality Guidelines (AQG) on September 22, 2021. In this study, the daily fine particulate matter (PM2.5) and surface ozone (O3) data of 618 cities around the world is collected from 2019 to 2022. Based on the new AQG, the number of attainment days for daily average concentrations of PM2.5 (≤ 15 µg m−3) and O3 (≤ 100 µg m−3) is approximately 10% and 90%, respectively. China and India exhibit a decreasing trend in the number of highly polluted days (> 75 µg m−3) for PM. Every year over 68% and 27% of cities in the world are exposed to harmful PM2.5 (> 35 µg m−3) and O3 (> 100 µg m−3) pollution, respectively. Combined with the United Nations Sustainable Development Goals (SDGs), it is found that more than 35% of the world's cities face PM2.5‐O3 compound pollution. Furthermore, the exposure risks in these cities (China, India, etc.) are mainly categorized as “High Risk”, “Risk”, and “Stabilization”. In contrast, economically developed cities are mainly categorized as “High Safety”, “Safety”, and “Deep Stabilization.” These findings indicate that global implementation of the WHO's new AQG will minimize the inequitable exposure risk from air pollution.

show abstract

Section: Discussionmentioning

confidence: 99%

Toward Better and Healthier Air Quality: Global PM_2.5 and O₃ Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Liu,

He,

et al. 2024

Global Challenges

View full text Add to dashboard Cite

show abstract

“…Ma et al (2021b) [ 55 ] illustrated that the increase in volatile organic compounds (VOCs) along with depletions in NO 2 and CO significantly boosted the ozone photochemical production in North China plain. Wang et al (2021) [ 56 ] showed that the annual summertime ozone over Central China was significantly correlated with the springtime thermal forcing, indicated by total atmospheric energy over Tibetan Plateau in an interdecadal timescale. During the COVID-19 lockdown period, the results of Yin et al (2021) [ 57 ] suggest that conventional emission reduction of NO x could not be sufficient to reduce surface O 3 concentration, and ozone pollution needs to be controlled by a variety of pollutants in central China.…”

Section: Discussionmentioning

confidence: 99%

Multi-Year Variation of Ozone and Particulate Matter in Northeast China Based on the Tracking Air Pollution in China (TAP) Data

Zhao

Gui

et al. 2022

IJERPH

View full text Add to dashboard Cite

With the rapid development of economy and urbanization acceleration, ozone (O3) pollution has become the main factor of urban air pollution in China after particulate matter. In this study, 90th percentile of maximum daily average (MDA) 8 h O3 (O3-8h-90per) and PM2.5 data from the Tracking Air Pollution in China (TAP) dataset were used to determine the mean annual, seasonal, monthly, and interannual distribution of O3-8h-90per and PM2.5 concentrations in Northeast China (NEC). The O3-8h-90per concentration was highest in Liaoning (>100 μg/m3), whereas the highest PM2.5 concentration was observed mainly in urban areas of central Liaoning and the Harbin–Changchun urban agglomeration (approximately 60 μg/m3). The O3-8h-90per concentrations were highest in spring and summer due to more intense solar radiation. On the contrary, the PM2.5 concentration increased considerably in winter influenced by anthropogenic activities. In May and June, the highest monthly mean O3-8h-90per concentrations were observed in central and western Liaoning, about 170–180 μg/m3, while the PM2.5 concentrations were the highest in January, February, and December, approximately 100 μg/m3. The annual mean O3-8h-90per concentration in NEC showed an increasing trend, while the PM2.5 concentration exhibited an annual decline. By 2020, the annual mean O3-8h-90per concentration in southern Liaoning had increased considerably, reaching 120–130 μg/m3. From the perspective of city levels, PM2.5 and O3-8h-90per also showed an opposite variation trend in the 35 cities of NEC. The reduced tropospheric NO2 column is consistent with the decreasing trend of the interannual PM2.5, while the increased surface temperature could be the main meteorological factor affecting the O3-8h-90per concentration in NEC. The results of this study enable a comprehensive understanding of the regional and climatological O3-8h-90per and PM2.5 distribution at distinct spatial and temporal scales in NEC.

show abstract

“…2CSAm, influencing the middle troposphere over each sub-region of CEC, is situated further south and west compared to 2CSAl, which affects the lower 345 troposphere. Notably, 2CSAm1, positioned at 50°-90° E, 25°-45° N, originates over the Tibetan Plateau, influenced by the South Asian High modulated by the heat source over the plateau (Wang et al, 2021). This source exerts the most substantial impact on LP, followed by the sub-regions NC, NE, EC, and CC.…”

Effect of springtime thermal forcing over Tibetan Plateau on summertime ozone in Central China during the period 1950–2019

Cited by 9 publications

References 85 publications

Toward Better and Healthier Air Quality: Global PM_2.5 and O₃ Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Toward Better and Healthier Air Quality: Global PM_2.5 and O₃ Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Multi-Year Variation of Ozone and Particulate Matter in Northeast China Based on the Tracking Air Pollution in China (TAP) Data

Comment on egusphere-2024-930

Contact Info

Product

Resources

About

Effect of springtime thermal forcing over Tibetan Plateau on summertime ozone in Central China during the period 1950–2019

Cited by 9 publications

References 85 publications

Toward Better and Healthier Air Quality: Global PM2.5 and O3 Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Toward Better and Healthier Air Quality: Global PM2.5 and O3 Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Multi-Year Variation of Ozone and Particulate Matter in Northeast China Based on the Tracking Air Pollution in China (TAP) Data

Comment on egusphere-2024-930

Contact Info

Product

Resources

About

Toward Better and Healthier Air Quality: Global PM_2.5 and O₃ Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021

Toward Better and Healthier Air Quality: Global PM_2.5 and O₃ Pollution Status and Risk Assessment Based on the New WHO Air Quality Guidelines for 2021