Reply on RC2 DOI Creative Commons

Johana Romero Alvarez

Published: July 9, 2022

Abstract. Tropospheric ozone (O3) concentrations depend on a combination of hemispheric, regional, and local-scale processes. Estimates how much O3 is produced locally vs. transported from further afield are essential in air quality management regulatory policies. Here, tagged-ozone mechanism within the Weather Research Forecasting model coupled with chemistry (WRF-Chem) used to quantify contributions surface UK anthropogenic nitrogen oxide (NOx) emissions inside outside during May–August 2015. The contribution different source regions three metrics also examined. It shown that simulations predict concentration spatial distribution domain-wide mean bias −3.7 ppbv. Anthropogenic NOx Europe account for 13 % 16 %, respectively, monthly UK, as majority (71 %) originates hemispheric background. Hemispheric contributes most north west peaks May, whereas European significant east, south-east, London, i.e. UK's populated areas, intensifying towards June July. Moreover, sources generally rather than in situ. demonstrated more stringent emission controls over continental Europe, particularly western would be necessary improve health-related metric MDA8 above 50 60 ppbv. Emission larger such Northern Hemisphere, instead required lessen impacts ecosystems quantified by AOT40 metric.

Language: Английский

Differences between VOCs and NOx transport contributions, their impacts on O3, and implications for O3 pollution mitigation based on CMAQ simulation over the Yangtze River Delta, China DOI
Yangjun Wang,

Sen Jiang,

Ling Huang

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 872, P. 162118 - 162118

Published: Feb. 13, 2023

Language: Английский

Citations

36
Integrated analysis of the transport process and source attribution of an extreme ozone pollution event in Hefei at different vertical heights: A case of study DOI
Feng Hu, Pinhua Xie, Xin Tian

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 906, P. 167237 - 167237

Published: Sept. 20, 2023

Language: Английский

Citations

11
Implementation of Boosting Algorithms in Predicting Air Quality Index of South Indian Cities DOI Creative Commons
Deepasikha Mishra, Ansuman Sahu, Subh Naman

et al.

Deleted Journal, Journal Year: 2025, Volume and Issue: 14, P. 99 - 115

Published: April 4, 2025

This paper addresses the critical issue of atmospheric pollution in India, underscoring necessity for precise predictive analytics Air Quality Index (AQI) data effective control. The study delineates etiological factors and substantial health hazards correlated with air pollution, encompassing elevated mortality rates, respiratory cardiovascular diseases, mental complications. AQI is presented as a necessary component converting complex quality into single, easily understandable metric. research aims to facilitate control through real-time monitoring future predictions timely interventions. To attain this objective, employs use boosting algorithms, like extreme gradient (XGBoost), light machine (LightGBM), an ensemble stack XGBoost LightGBM prediction South Indian cities. performance these models was found noteworthy, high R² scores low root-mean-squared error (RMSE) scores, exhibiting its efficacy providing highly accurate results. By merging technological innovation learning capabilities, equip decision-makers actionable insights informed mitigation strategies, promoting more sustainable environment. Keywords: Pollution, (AQI), XGBoost, LightGBM, Ensemble Stack

Language: Английский

Citations

0
Investigating ozone build-up in the east of England during the July 2015 heat wave DOI

Johana Romero‐Alvarez,

Aurelia Lupaşcu,

Steve Dorling

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 979, P. 179464 - 179464

Published: April 22, 2025

Language: Английский

Citations

0
The Impact of Lightning NOx Production on Ground‐Level Ozone in Tehran DOI Creative Commons
Maryam Gharaylou, Nafiseh Pegahfar, Omid Alizadeh

et al.

Earth and Space Science, Journal Year: 2024, Volume and Issue: 11(3)

Published: March 1, 2024

Abstract Lightning‐generated nitrogen oxides (LNOx) have an impact on the concentration of ground‐level ozone which acts as a toxic air pollutant, thereby negatively influencing human health and environment. To understand LNOx ozone, we simulated four thunderstorm events in Tehran using WRF‐Chem model. As observations are not available, evaluated temporal distribution against quality monitoring station. We also compared simulation results spatial total column from Ozone Monitoring Instrument. performs well concentration, with best performance for event highest lightning activity (correlation coefficient 0.91). The analysis observed indicates good WRF‐Chem. Hourly variation during is both hourly number events. There agreement between two events, correlation coefficients 0.55 0.57. emissions enhance production middle to upper troposphere, can subsequently contribute increase by transport, vertical mixing, chemistry. In addition, initiation chemical processes response cloud‐to‐ground strikes may ozone.

Language: Английский

Citations

3
Summertime tropospheric ozone source apportionment study in the Madrid region (Spain) DOI Creative Commons
David de la Paz, Rafael Borge, Juan Manuel de Andrés

et al.

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(8), P. 4949 - 4972

Published: April 29, 2024

Abstract. The design of emission abatement measures to effectively reduce high ground-level ozone (O3) concentrations in urban areas is very complex. In addition the strongly non-linear chemistry this secondary pollutant, precursors can be released by a variety sources different regions, and locally produced O3 mixed with that transported from regional or continental scales. All these processes depend also on specific meteorological conditions topography study area. Consequently, high-resolution comprehensive modeling tools are needed understand drivers photochemical pollution assess potential local strategies adverse impacts tropospheric levels. study, we apply Integrated Source Apportionment Method (ISAM) implemented Community Multiscale Air Quality (CMAQ v5.3.2) model investigate origin summertime Madrid region (Spain). Consistent previous studies, our results confirm levels dominated non-local contributions, representing around 70 % mean values across region. Nonetheless, emitted sources, mainly road traffic, play more important role during peaks, contributions as 25 ppb. impact higher under unfavorable associated accumulation patterns. These findings suggest system may used future simulate outcomes prevent high-O3 episodes metropolitan

Language: Английский

Citations

3
National and transboundary contributions to surface ozone concentration across European countries DOI Creative Commons
Roger Garatachea, María-Teresa Pay, Hicham Achebak

et al.

Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)

Published: Oct. 14, 2024

Tropospheric ozone impacts health, climate, and ecosystems. Effective mitigation policies are challenged by limited quantitative understanding of national versus transboundary contributions to surface ozone. This study uses a chemical transport model with source apportionment algorithm analyze across Europe from 2015 2017 during peak season. We quantify country-level production imported ozone, distinguishing 35 European countries, neighboring seas, hemispheric influences. Results show substantial outside the playing significant role. crucial high episodes, especially Germany, France, Italy, UK, Poland, Spain. Spain, northern northwest France identified as areas where precursor reductions would be more effective in improving air quality. Furthermore, 25 countries studied net importers cumulative mass, Netherlands, Belgium, UK acting major exporters. These findings highlight need for comprehensive quality cross-border cooperation. The pollutants is critical external contributor concentration Europe, emissions key according an analysis using regional modeling tagging method.

Language: Английский

Citations

2
Ozone induced multigenerational glucose and lipid metabolism disorders in Drosophila DOI
Nan Nan, Yuntong Liu,

Zhipeng Yan

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175477 - 175477

Published: Aug. 14, 2024

Language: Английский

Citations

2
Sources of surface O3 in the UK: tagging O3 within WRF-Chem DOI Creative Commons

Johana Romero‐Alvarez,

Aurelia Lupaşcu, Douglas Lowe

et al.

Atmospheric chemistry and physics, Journal Year: 2022, Volume and Issue: 22(20), P. 13797 - 13815

Published: Oct. 26, 2022

Abstract. Tropospheric ozone (O3) concentrations depend on a combination of hemispheric, regional, and local-scale processes. Estimates how much O3 is produced locally vs. transported from further afield are essential in air quality management regulatory policies. Here, tagged-ozone mechanism within the Weather Research Forecasting model coupled with chemistry (WRF-Chem) used to quantify contributions surface UK anthropogenic nitrogen oxide (NOx) emissions inside outside during May–August 2015. The contribution different source regions three metrics also examined. It shown that simulations predict concentration spatial distribution domain-wide mean bias −3.7 ppbv. Anthropogenic NOx Europe account for 13 % 16 %, respectively, monthly UK, as majority (71 %) originates hemispheric background. Hemispheric contributes most north west peaks May, whereas European significant east, south-east, London, i.e. UK's populated areas, intensifying towards June July. Moreover, sources generally rather than situ. demonstrated more stringent emission controls over continental Europe, particularly western would be necessary improve health-related metric MDA8 above 50 60 Emission larger such Northern Hemisphere, instead required lessen impacts ecosystems quantified by AOT40 metric.

Language: Английский

Citations

8
Health burdens related to emission sources and cross-provincial air pollution in China DOI Creative Commons
Weiyang Hu, Bo Zheng, Daven K. Henze

et al.

npj Climate and Atmospheric Science, Journal Year: 2024, Volume and Issue: 7(1)

Published: Dec. 19, 2024

Effective abatement of air-pollution-induced health damages requires a comprehensive understanding the changing roles individual sources and cross-regional transport. Here, we estimate premature mortality attributable to specific source categories, precursor species, regions within mainland China. We find that marginal national deaths, dominated by PM2.5 exposure, have declined from 151,842 per 10% growth emissions in 2013 111,271 2020, would further 54,293 2035 following carbon peaking neutrality pathway. The impacts certain species-category combinations grown including NOX industrial combustion off-road traffic. proportions cross-provincial burden remained stable at around 50%. Provinces with net exporting deaths were intensively located north China while those importing south. Our findings highlight need for location-precursor/sector-specific strategy emission controls China's public regulatory framework.

Language: Английский

Citations

1