Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2016.11.010 |
Quantifying the relationship between extreme air pollution events and extreme weather events | |
Zhang, Henian1; Wang, Yuhang1; Park, Tae-Won1,2; Deng, Yi1 | |
2017-05-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 188 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; South Korea |
英文摘要 | Extreme weather events can strongly affect surface air quality, which has become a major environmental factor to affect human health. Here, we examined the relationship between extreme ozone and PM2.5 (particular matter with an aerodynamic diameter less than 2.5 mu m) events and the representative meteorological parameters such as daily maximum temperature (Tmax), minimum relative humidity (RHmin), and minimum wind speed (Vmin), using the location-specific 95th or 5th percentile threshold derived from historical reanalysis data (30 years for ozone and 10 years for PM2.5). We found that ozone and PM2.5 extremes were decreasing over the years, reflecting EPA's tightened standards and effort on reducing the corresponding precursor's emissions. Annual ozone and PM2.5 extreme days were highly correlated with Tmax and RHmin, especially in the eastern U.S. They were positively (negatively) correlated with Vmin in urban (rural and suburban) stations. The overlapping ratios of ozone extreme days with Tmax were fairly constant, about 32%, and tended to be high in fall and low in winter. Ozone extreme days were most sensitive to Tmax, then RHmin, and least sensitive to Vmin. The majority of ozone extremes occurred when Tmax was between 300 K and 320 K, RHmin was less than 40%, and Vmin was less than 3 m/s. The number of annual extreme PM2.5 days was highly positively correlated with the extreme RHmin/Tmax days, with correlation coefficient between PM2.5/RHmin highest in urban and suburban regions and the correlation coefficient between PM2.5/Fmax highest in rural area. Tmax has more impact on PM2.5 extreme over the eastern U.S. Extreme PM2.5 days were more likely to occur at low RH conditions in the central and southeastern U.S., especially during spring time, and at high RH conditions in the northern U.S. and the Great Plains. Most extreme PM2.5 events occurred when Tmax was between 300 K and 320 K and RHmin was between 10% and 50%. Extreme PM2.5 days usually occurred when Vmin was under 2 m/s. However, during spring season in the Southeast and fall season in Northwest, high winds were found to accompany extreme PM2.5 days, likely reflecting the impact of fire emissions. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Extreme weather events Air pollution Ozone PM2.5 |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395609200008 |
WOS关键词 | SOUTHEASTERN UNITED-STATES ; FIRED POWER-PLANT ; CLIMATE-CHANGE ; CHEMICAL-COMPOSITION ; OZONE CONCENTRATIONS ; PARTICULATE MATTER ; SOUTHERN SWEDEN ; SURFACE OZONE ; QUALITY ; TEMPERATURE |
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/38109 |
专题 | 地球科学 |
作者单位 | 1.Georgia Inst Technol, Atlanta, GA 30332 USA; 2.Chonnam Natl Univ, Gwangju, South Korea |
推荐引用方式 GB/T 7714 | Zhang, Henian,Wang, Yuhang,Park, Tae-Won,et al. Quantifying the relationship between extreme air pollution events and extreme weather events[J]. ATMOSPHERIC RESEARCH,2017,188. |
APA | Zhang, Henian,Wang, Yuhang,Park, Tae-Won,&Deng, Yi.(2017).Quantifying the relationship between extreme air pollution events and extreme weather events.ATMOSPHERIC RESEARCH,188. |
MLA | Zhang, Henian,et al."Quantifying the relationship between extreme air pollution events and extreme weather events".ATMOSPHERIC RESEARCH 188(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论