Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-499-2020 |
Mitigation of PM2.5 and ozone pollution in Delhi. a sensitivity study during the pre-monsoon period | |
Chen, Ying1,2; Wild, Oliver1,2; Ryan, Edmund1,9; Sahu, Saroj Kumar4; Lowe, Douglas5; Archer-Nicholls, Scott6; Wang, Yu5; McFiggans, Gordon5; Ansari, Tabish1; Singh, Vikas7; Sokhi, Ranjeet S.8; Archibald, Alex6; Beig, Gufran3 | |
2020-01-14 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:1页码:499-514 |
文章类型 | Article |
语种 | 英语 |
国家 | England; India |
英文摘要 | Fine particulate matter (PM2.5) and surface ozone (O-3) are major air pollutants in megacities such as Delhi, but the design of suitable mitigation strategies is challenging. Some strategies for reducing PM2.5 may have the notable side effect of increasing O-3. Here, we demonstrate a numerical framework for investigating the impacts of mitigation strategies on both PM2.5 and O-3 in Delhi. We use Gaussian process emulation to generate a computationally efficient surrogate for a regional air quality model (WRF-Chem). This allows us to perform global sensitivity analysis to identify the major sources of air pollution and to generate emission-sector-based pollutant response surfaces to inform mitigation policy development. Based on more than 100 000 emulation runs during the pre-monsoon period (peak O-3 season), our global sensitivity analysis shows that local traffic emissions from the Delhi city region and regional transport of pollution emitted from the National Capital Region (NCR) surrounding Delhi are dominant factors influencing PM2.5 and O-3 in Delhi. They together govern the O-3 peak and PM2.5 concentration during daytime. Regional transport contributes about 80% of the PM2.5 variation during the night. Reducing traffic emissions in Delhi alone (e.g. by 50 %) would reduce PM2.5 by 15 %-20% but lead to a 20 %-25% increase in O-3. However, we show that reducing NCR regional emissions by 25 %-30% at the same time would further reduce PM2.5 by 5 %-10% in Delhi and avoid the O-3 increase. This study provides scientific evidence to support the need for joint coordination of controls on local and regional scales to achieve effective reduction in PM2.5 whilst minimising the risk of O-3 increase in Delhi. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000507314100004 |
WOS关键词 | TIANJIN-HEBEI REGION ; AIR-QUALITY ; WRF-CHEM ; FINE PARTICLES ; NORTHERN INDIA ; SURFACE OZONE ; AEROSOL MODEL ; SOUTH-ASIA ; DUST STORM ; EMISSIONS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278556 |
专题 | 地球科学 |
作者单位 | 1.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England; 2.Univ Lancaster, Data Sci Inst, Lancaster LA1 4YW, England; 3.Indian Inst Trop Meteorol, Pune, Maharashtra, India; 4.Utkal Univ, Dept Bot, Environm Sci, Bhubaneswar, India; 5.Univ Manchester, Ctr Atmospher Sci, Sch Earth Atmospher & Environm Sci, Manchester M13 9PL, Lancs, England; 6.Univ Cambridge, Dept Chem, NCAS Climate, Cambridge CB2 1EW, England; 7.Natl Atmospher Res Lab, Gadanki, Andhra Pradesh, India; 8.Univ Hertfordshire, Ctr Atmospher & Climate Phys Res, Hatfield, Herts, England; 9.Univ Manchester, Dept Math, Manchester M13 9PL, Lancs, England |
推荐引用方式 GB/T 7714 | Chen, Ying,Wild, Oliver,Ryan, Edmund,et al. Mitigation of PM2.5 and ozone pollution in Delhi. a sensitivity study during the pre-monsoon period[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(1):499-514. |
APA | Chen, Ying.,Wild, Oliver.,Ryan, Edmund.,Sahu, Saroj Kumar.,Lowe, Douglas.,...&Beig, Gufran.(2020).Mitigation of PM2.5 and ozone pollution in Delhi. a sensitivity study during the pre-monsoon period.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(1),499-514. |
MLA | Chen, Ying,et al."Mitigation of PM2.5 and ozone pollution in Delhi. a sensitivity study during the pre-monsoon period".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.1(2020):499-514. |
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