Discordant future climate-driven changes in winter PM2.5 pollution across India under a warming climate
Bibliographic Data
| ID | 19568564 |
|---|---|
| Authors | Xiaorui Zhang (0000-0002-7216-1466, Hong Kong Baptist University), Xiang Xiao (0000-0002-1194-9559, Hong Kong Baptist University), Fan Wang (0000-0002-9869-9504, Hong Kong Baptist University), Yang Yang (0000-0002-3705-7612, Nanjing University of Information Science and Technology), Hong Liao (0000-0001-6628-1798, Nanjing University of Information Science and Technology), Shixin Wang (0000-0001-6631-7332, Hong Kong Baptist University), Meng Gao (0000-0002-8657-3541) |
| Year | 2023 |
| Volume | 11 |
| Issue | 1 |
| Publication date | 2023-07-07 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Elementa Science of the Anthropocene (JOURNAL) |
| Journal identifiers | ISSN: 2325-1026 • E-ISSN: 2325-1026 |
| Publisher | University of California Press (PUBLISHER • US) |
| DOI | 10.1525/elementa.2022.00149 |
| OpenAlex | W4383504322 |
| Language | EN |
| References cited | 42 |
India’s megacities have been suffering from frequent winter particulate matter (PM2.5) pollution episodes, and how impacts of meteorology on air quality will evolve with time under a warming climate remains a concern. In this study, we identified conducive meteorological weather conditions in 5 megacities across India and found that quantile regression models can better describe the meteorological impacts under high pollution level and capture more observed high PM2.5 events than linear regression. The future climate-driven changes in winter PM2.5 pollution in India were offered with quantile regression models using Coupled Model Intercomparison Project 6 simulations under the SSP585 and SSP245 scenarios. Under SSP585 scenario, northern Indian megacities are likely to suffer from a stagnant weather condition in the near future, and higher boundary layer height and more atmospheric dispersion conditions during the second half of 21st century. Compared with the mean levels over 1990–2019, New Delhi and Kolkata would experience 6.1 and 5.7 more PM2.5 exceedances per season over 2030–2059 and 4.1 and 2.5 fewer exceedances per season during 2070–2099, respectively. Owing to increasing surface humidity and boundary layer height, air quality is projected to improve in Mumbai and Hyderabad with more than 6.1 and 1.2 fewer exceedances per season over 2050–2099. However, more than 6 exceedances will occur in Chennai due to enhanced lower-tropospheric stability. The negative impact of future meteorology on PM2.5 exceedances would become weak under SSP245. Our results can provide references for the Indian government to optimize their emission control plans to minimize adverse impacts of air quality on health, ecosystem, and climate
Air pollution · Air quality index · Atmospheric sciences · Climate change · Climate model · Climatology · Geography · Megacity · Meteorology · Particulates · Quantile · Statistics · Air Quality and Health Impacts · Air Quality Monitoring and Forecasting · Atmospheric chemistry and aerosols · Environmental Science · Mathematics · Pollution
Estimates and 25-year trends of the global burden of disease attributable to ambient air pollution
The impact of air pollution on deaths, disease burden, and life expectancy across the states of India
The contribution of outdoor air pollution sources to premature mortality on a global scale
The Scenario Model Intercomparison Project (ScenarioMIP) for CMIP6
Regression Quantiles
Synoptic and meteorological drivers of extreme ozone concentrations over Europe
Traffic intervention” policy fails to mitigate air pollution in megacity Delhi
| Citation velocity | historical |
|---|---|
| Highly cited | No |