Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aabf20 |
Drought-sensitivity of fine dust in the US Southwest: Implications for air quality and public health under future climate change | |
Achakulwisut, P.1; Mickley, L. J.2; Anenberg, S. C.3 | |
2018-05-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We investigate the present-day sensitivity of fine dust levels in the US Southwest to regional drought conditions and use the observed relationships to assess future changes in fine dust levels and associated health impacts under climate change. Empirical Orthogonal Function analysis reveals that the most dominant mode of fine dust interannual variability for each season consists of a pattern of large-scale co-variability across the Southwest. This mode is strongly correlated to the Standardized Precipitation-Evapotranspiration Index (SPEI) accumulated over 1-6 months in local and surrounding regions spanning the major North American deserts. Across the seasons, a unit decrease in the 2 month SPEI averaged over the US Southwest and northern Mexico is significantly associated with increases in Southwest fine dust of 0.22-0.43 mu gm(-3). We apply these sensitivities to statistically downscaled meteorological output from 22 climate models following two Representative Concentration Pathways (RCPs), and project future increases in seasonal mean fine dust of 0.04-0.10 mu gm(-3) (5%-8%) under RCP2.6 and 0.15-0.55 mu gm(-3) (26%-46%) under RCP8.5 relative to the present-day (2076-2095 vs. 1996-2015). Combined with the same projections of future population and baseline incidence rates, annual premature mortality attributable to fine dust exposure could increase by 140 (24%) deaths under RCP2.6 and 750 (130%) deaths under RCP8.5 for adults aged >= 30 years, and annual hospitalizations due to cardiovascular and respiratory illnesses could increase by 170 (59%) admissions under RCP2.6 and 860 (300%) admissions under RCP8.5 for adults aged >= 65 years in the Southwest relative to the present-day. Our results highlight a climate penalty that has important socioeconomic and policy implications for the US Southwest but is not yet widely recognized. |
英文关键词 | air quality climate impacts mineral dust particulate matter droughts |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431799700002 |
WOS关键词 | UNITED-STATES IMPLICATIONS ; PARTICULATE MATTER PM2.5 ; WIND EROSION ; MORTALITY ; POLLUTION ; DESERT ; CMIP5 ; VARIABILITY ; RESPONSES ; EXPOSURE |
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/30972 |
专题 | 气候变化 |
作者单位 | 1.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 2.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 3.George Washington Univ, Sch Publ Hlth, Milken Inst, Washington, DC 20052 USA |
推荐引用方式 GB/T 7714 | Achakulwisut, P.,Mickley, L. J.,Anenberg, S. C.. Drought-sensitivity of fine dust in the US Southwest: Implications for air quality and public health under future climate change[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(5). |
APA | Achakulwisut, P.,Mickley, L. J.,&Anenberg, S. C..(2018).Drought-sensitivity of fine dust in the US Southwest: Implications for air quality and public health under future climate change.ENVIRONMENTAL RESEARCH LETTERS,13(5). |
MLA | Achakulwisut, P.,et al."Drought-sensitivity of fine dust in the US Southwest: Implications for air quality and public health under future climate change".ENVIRONMENTAL RESEARCH LETTERS 13.5(2018). |
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