Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082250 |
The Importance of Sampling Variability in Assessments of ENSO-PM2.5 Relationships: A Case Study for the South Central United States | |
Previdi, Michael1; Fiore, Arlene M.1,2 | |
2019-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:12页码:6878-6884 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We assess seasonal mean relationships between the El Nino-Southern Oscillation (ENSO) and surface fine particulate matter (PM2.5) over the United States using observations from 1999 to 2015. Through a case study of the springtime PM2.5 response to ENSO in the South Central United States, we demonstrate that sampling variability is large on the 17-year time scale of the observations, leading to large uncertainty in the estimated relationships. The PM2.5 response in the South Central United States is dominated by decreases in soil dust concentrations during El Nino, which we link to changes in cloud cover and near-surface wind speed. The observed dust response during 1999-2015 is about 25% stronger than the long-term mean ENSO-forced signal estimated from climate model control simulations. Given a different 17-year period, this discrepancy could be even larger. Our findings underscore the importance of accounting for sampling uncertainty in studies of ENSO's air quality impacts. |
英文关键词 | El Nino-Southern Oscillation air quality climate variability climate models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616300079 |
WOS关键词 | SURFACE OZONE ; POLLUTION ; IMPACTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/184278 |
专题 | 气候变化 |
作者单位 | 1.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA; 2.Columbia Univ, Dept Earth & Environm Sci, New York, NY USA |
推荐引用方式 GB/T 7714 | Previdi, Michael,Fiore, Arlene M.. The Importance of Sampling Variability in Assessments of ENSO-PM2.5 Relationships: A Case Study for the South Central United States[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(12):6878-6884. |
APA | Previdi, Michael,&Fiore, Arlene M..(2019).The Importance of Sampling Variability in Assessments of ENSO-PM2.5 Relationships: A Case Study for the South Central United States.GEOPHYSICAL RESEARCH LETTERS,46(12),6878-6884. |
MLA | Previdi, Michael,et al."The Importance of Sampling Variability in Assessments of ENSO-PM2.5 Relationships: A Case Study for the South Central United States".GEOPHYSICAL RESEARCH LETTERS 46.12(2019):6878-6884. |
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