Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1700387115 |
Causes and consequences of decreasing atmospheric organic aerosol in the United States | |
Ridley, D. A.1; Heald, C. L.1,2; Ridley, K. J.1; Kroll, J. H.1,3 | |
2018-01-09 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:2页码:290-295 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Exposure to atmospheric particulate matter (PM) exacerbates respiratory and cardiovascular conditions and is a leading source of premature mortality globally. Organic aerosol contributes a significant fraction of PM in the United States. Here, using surface observations between 1990 and 2012, we show that organic carbon has declined dramatically across the entire United States by 25-50%; accounting for more than 30% of the US-wide decline in PM. The decline is in contrast with the increasing organic aerosol due to wildfires and no clear trend in biogenic emissions. By developing a carbonaceous emissions database for the United States, we show that at least two-thirds of the decline in organic aerosol can be explained by changes in anthropogenic emissions, primarily from vehicle emissions and residential fuel burning. We estimate that the decrease in anthropogenic organic aerosol is responsible for averting 180,000 (117,000-389,000) premature deaths between 1990 and 2012. The unexpected decrease in organic aerosol, likely a consequence of the implementation of Clean Air Act Amendments, results in 84,000 (30,000-164,000) more lives saved than anticipated by the EPA between 2000 and 2010. |
英文关键词 | carbonaceous aerosol organic aerosol PM mortality anthropogenic emissions long-term trends |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419686400043 |
WOS关键词 | AIR-POLLUTION ; GLOBAL BURDEN ; SOUTHEAST US ; EMISSIONS ; TRENDS ; MODEL ; CARBON ; ISOPRENE ; SULFATE ; IMPACT |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/204911 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA; 2.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA; 3.MIT, Dept Chem Engn, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Ridley, D. A.,Heald, C. L.,Ridley, K. J.,et al. Causes and consequences of decreasing atmospheric organic aerosol in the United States[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(2):290-295. |
APA | Ridley, D. A.,Heald, C. L.,Ridley, K. J.,&Kroll, J. H..(2018).Causes and consequences of decreasing atmospheric organic aerosol in the United States.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(2),290-295. |
MLA | Ridley, D. A.,et al."Causes and consequences of decreasing atmospheric organic aerosol in the United States".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.2(2018):290-295. |
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