Journal of Atmospheric and Solar-Terrestrial Physics, Journal Year: 2025, Volume and Issue: unknown, P. 106464 - 106464
Published: Feb. 1, 2025
Language: Английский
Environmental Research, Journal Year: 2021, Volume and Issue: 195, P. 110754 - 110754
Published: Feb. 9, 2021
Language: Английский
Citations
644
The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 858, P. 160064 - 160064
Published: Nov. 8, 2022
Language: Английский
Citations
259
Nature, Journal Year: 2022, Volume and Issue: 601(7893), P. 380 - 387
Published: Jan. 19, 2022
Abstract Nitrogen dioxide (NO 2 ) is an important contributor to air pollution and can adversely affect human health 1–9 . A decrease in NO concentrations has been reported as a result of lockdown measures reduce the spread COVID-19 10–20 Questions remain, however, regarding relationship satellite-derived atmospheric column data with health-relevant ambient ground-level concentrations, representativeness limited ground-based monitoring for global assessment. Here we derive spatially resolved, from densities observed by TROPOMI satellite instrument at sufficiently fine resolution (approximately one kilometre) allow assessment individual cities during lockdowns 2020 compared 2019. We apply these estimates quantify changes more than 200 cities, including 65 without available ground monitoring, largely lower-income regions. Mean country-level population-weighted are 29% ± 3% lower countries strict conditions those without. Relative long-term trends, decreases exceed recent Ozone Monitoring Instrument (OMI)-derived year-to-year emission controls, comparable 15 4 years reductions globally. Our case studies indicate that sensitivity varies country emissions sector, demonstrating critical need resolved observational information provided surface concentration estimates.
Language: Английский
Citations
222
Advances in Atmospheric Sciences, Journal Year: 2022, Volume and Issue: 39(6), P. 819 - 860
Published: Jan. 25, 2022
Urban environments lie at the confluence of social, cultural, and economic activities have unique biophysical characteristics due to continued infrastructure development that generally replaces natural landscapes with built-up structures. The vast majority studies on urban perturbation local weather climate been centered heat island (UHI) effect, referring higher temperature in cities compared their surroundings. Besides UHI effect waves, urbanization also impacts atmospheric moisture, wind, boundary layer structure, cloud formation, dispersion air pollutants, precipitation, storms. In this review article, we first introduce datasets methods used studying areas through both observation modeling then summarize scientific insights impact various aspects regional extreme based more than 500 studies. We highlight major research gaps challenges our understanding provide perspective recommendations for future priorities directions.城市环境位于社会、文化和经济活动的结合点,城市下垫面具有独特的生物物理特征。在城市化过程中持续的基础设施建设导致自然景观被建筑物替代。在过去很长时间,绝大部分城市影响天气气候的研究和城市热岛效应(城市及上空温度高于周边地区)有关。除了城市热岛效应,城市化也影响大气湿度、风、边界层结构、云的形成、污染物扩散、降水和暴雨。在这篇综述文章中,我们阅览了超过五百篇文献,从观测和模拟两个方面,首先介绍了用于城市化及影响研究的数据资料和方法,总结了城市化影响区域气候和极端天气的各个领域的科学要点。我们也例举了在理解城市化影响方面目前存在的主要问题和挑战,提出了相应的未来研究重点和方向。.
Language: Английский
Citations
216
Journal of Energy Storage, Journal Year: 2022, Volume and Issue: 56, P. 105896 - 105896
Published: Oct. 22, 2022
Language: Английский
Citations
131
Science Advances, Journal Year: 2022, Volume and Issue: 8(14)
Published: April 8, 2022
Tropical cities are experiencing rapid growth but lack routine air pollution monitoring to develop prescient quality policies. Here, we conduct targeted sampling of recent (2000s 2010s) observations pollutants from space-based instruments over 46 fast-growing tropical cities. We quantify significant annual increases in nitrogen dioxide (NO 2 ) (1 14%), ammonia (2 12%), and reactive volatile organic compounds 11%) most cities, driven almost exclusively by emerging anthropogenic sources rather than traditional biomass burning. estimate urban population exposure 1 18% for fine particles (PM 2.5 23% NO 2005 2018 attribute 180,000 (95% confidence interval: −230,000 590,000) additional premature deaths (62% increase relative 2005) this exposure. These predicted reach populations up 80 million people 2100, so regulatory action targeting is urgently needed.
Language: Английский
Citations
84
Atmospheric Pollution Research, Journal Year: 2024, Volume and Issue: 15(7), P. 102146 - 102146
Published: April 9, 2024
Language: Английский
Citations
18
Environmental Research Letters, Journal Year: 2021, Volume and Issue: 16(5), P. 054031 - 054031
Published: Jan. 21, 2021
Abstract The dramatic and sudden reduction in anthropogenic activity due to lockdown measures the UK response COVID-19 outbreak has resulted a concerted effort estimate local regional changes air quality, though underlying emissions remain uncertain. Here we combine satellite observations of tropospheric NO 2 from TROPOspheric Monitoring Instrument Goddard Earth Observing System (GEOS)-Chem 3D chemical transport model that x declined nationwide by ∼20% during (23 March 31 May 2020). Regionally, these range 22% 23% western portion country 29% southeast Manchester, >40% London. We apply uniform 20% period emission GEOS-Chem over determine decline led national PM 2.5 1.1 μ g m −3 , ranging 0.6 Scotland southwest. cities (>40%) is greater than average causes an increase ozone ∼2 ppbv London Manchester. change concentrations reductions alone about half total 2019 2020. This emphasizes need account for other factors, particular meteorology, future pollution abatement strategies regulatory action.
Language: Английский
Citations
57
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: April 25, 2024
The oxidative potential (OP) of particulate matter (PM) is a major driver PM-associated health effects. In India, the emission sources defining PM-OP, and their local/regional nature, are yet to be established. Here, address this gap we determine geographical origin, PM, its OP at five Indo-Gangetic Plain sites inside outside Delhi. Our findings reveal that although uniformly high PM concentrations recorded across entire region, local formation processes dominate pollution. Specifically, ammonium chloride, organic aerosols (OA) from traffic exhaust, residential heating, oxidation unsaturated vapors fossil fuels dominant Ammonium sulfate nitrate, secondary OA biomass burning vapors, produced Nevertheless, PM-OP overwhelmingly driven by incomplete combustion fuels, including traffic. These suggest addressing inefficient can effectively mitigate exposure in northern India.
Language: Английский
Citations
15
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: Jan. 10, 2024
Abstract Transboundary pollutant transport is considered as one of the primary factors causing seasonal air quality deterioration in Delhi, India’s capital. The highest standard deviations exceeding days winter for NO 2 (7.14–9.63%) and SO (4.04–7.42%) 2019–2022 underscore role meteorological conditions Delhi's pollution. In contrast, post-monsoon season shows exceedance (4.52–8.00%) CO due to stubble burning (SB) Punjab (68,902 fires/year). Despite government’s assertions decreasing SB events (14.68%), city’s persistently rose by 6.36%. CAMS data used assessing contribution hotspots through back-trajectory analysis at multiple heights. An overlap hotspot 111 sq. km area identified Southeast parts that have a higher levels Delhi during 2019. Similarly, are also observed over industrial areas pre-monsoon seasons. same seasons show similar contributing patterns highlighting influence consistent emission conditions. clear delineation using receptor model heights coupled with source apportionment studies will assist decision-makers addressing pollution sources outside Delhi.
Language: Английский
Citations
12