Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD030988 |
Separating Emission and Meteorological Drivers ofMid-21st-Century Air Quality Changes in IndiaBased on Multiyear Global-RegionalChemistry-Climate Simulations | |
Wu, Xiaokang1; Xu, Yangyang1; Kumar, Rajesh2; Barth, Mary2 | |
2019-12-04 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | Many Indian metropolitan areas currently suffer from severe air pollution such as PM2.5, which might continue into future decades, dependent on the trends in emission growth and regional climate. Based on a multiyear Nested Regional Climate Model coupled with Chemistry simulation, we developed a daily index (Hazy Weather Index for India, HWII) to characterize the meteorology-pollution relationship over three heavily polluted cities (Delhi, Kolkata, and Mumbai) and Indo-Gangetic Plain. HWII consists of near-surface (10 m) zonal wind (U10) and temperature at 200 hPa (T200) over the northwestern Indian Ocean, and local planetary boundary layer height. The simulated PM2.5 levels during the Historical Period (1997-2004) exhibit robust negative correlation with the HWII. The negative correlation captures day-to-day covariability of surface PM2.5 and meteorology, highlighting the role of monsoon-related large-scale circulation in redistributing locally emitted pollutants. More importantly, two future (2046-2054) simulations with regional warming under the Representative Concentration Pathway 6.0 and 8.5 were analyzed. The future changes in HWII and the three predictive meteorological variables work in favor of a stronger pollution horizontal dispersion and vertical ventilation and thus could lead to a reduction of PM2.5 level by 7%. The meteorology-driven reduction in PM2.5, however, is overwhelmed by the projected growth in anthropogenic emission (especially under Representative Concentration Pathway 8.5 emission by 31%). Our results are contrary to previous studies over other regions (e.g., China) where future climate change might contribute to PM2.5 increase. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000500407800001 |
WOS关键词 | INDIAN-SUMMER MONSOON ; PARTICULATE MATTER POLLUTION ; INTERANNUAL VARIABILITY ; PREMATURE MORTALITY ; TROPOSPHERIC OZONE ; SEASONAL CYCLE ; ASIAN MONSOON ; SEVERE HAZE ; IMPACT ; PM2.5 |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/225837 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Wu, Xiaokang,Xu, Yangyang,Kumar, Rajesh,et al. Separating Emission and Meteorological Drivers ofMid-21st-Century Air Quality Changes in IndiaBased on Multiyear Global-RegionalChemistry-Climate Simulations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Wu, Xiaokang,Xu, Yangyang,Kumar, Rajesh,&Barth, Mary.(2019).Separating Emission and Meteorological Drivers ofMid-21st-Century Air Quality Changes in IndiaBased on Multiyear Global-RegionalChemistry-Climate Simulations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Wu, Xiaokang,et al."Separating Emission and Meteorological Drivers ofMid-21st-Century Air Quality Changes in IndiaBased on Multiyear Global-RegionalChemistry-Climate Simulations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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