Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-12827-2017 |
Adverse effects of increasing drought on air quality via natural processes | |
Wang, Yuxuan1,2; Xie, Yuanyu1; Dong, Wenhao1; Ming, Yi3; Wang, Jun4,5,6; Shen, Lu7 | |
2017-10-27 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Drought is a recurring extreme of the climate system with well-documented impacts on agriculture and water resources. The strong perturbation of drought to the land biosphere and atmospheric water cycle will affect atmospheric composition, the nature and extent of which are not well understood. Here we present observational evidence that US air quality is significantly correlated with drought severity. Severe droughts during the period of 1990-2014 were found associated with growth-season (March-October) mean enhancements in surface ozone and PM2.5 of 3.5 ppbv (8 %) and 1.6 mu gm(-3) (17 %), respectively. The pollutant enhancements associated with droughts do not appear to be affected by the decreasing trend of US anthropogenic emissions, indicating natural processes as the primary cause. Elevated ozone and PM2.5 are attributed to the combined effects of drought on deposition, natural emissions (wildfires, biogenic volatile organic compounds (BVOCs), and dust), and chemistry. Most climate-chemistry models are not able to reproduce the observed correlations of ozone and PM2.5 to drought severity. The model deficiencies are partly attributed to the lack of drought-induced changes in land-atmosphere exchanges of reactive gases and particles and misrepresentation of cloud changes under drought conditions. By applying the observed relationships between drought and air pollutants to climate model projected drought occurrences, we estimate an increase of 1-6% for ground-level O-3 and 1-16% for PM2.5 in the US by 2100 compared to the 2000s due to increasing drought alone. Drought thus poses an important aspect of climate change penalty on air quality, and a better prediction of such effects would require improvements in model processes. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413853000003 |
WOS关键词 | GLOBAL FIRE EMISSIONS ; CLIMATE-CHANGE ; PARTICULATE MATTER ; ISOPRENE EMISSION ; SURFACE OZONE ; HEAT-WAVE ; MORTALITY ; AEROSOLS ; US ; SENSITIVITY |
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/22783 |
专题 | 地球科学 |
作者单位 | 1.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China; 2.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA; 3.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA; 4.Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA USA; 5.Univ Iowa, Dept Chem & Biochem Engn, Iowa City, IA 52242 USA; 6.Univ Iowa, Interdisciplinary Grad Program GeoInformat, Iowa City, IA USA; 7.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA |
推荐引用方式 GB/T 7714 | Wang, Yuxuan,Xie, Yuanyu,Dong, Wenhao,et al. Adverse effects of increasing drought on air quality via natural processes[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(20). |
APA | Wang, Yuxuan,Xie, Yuanyu,Dong, Wenhao,Ming, Yi,Wang, Jun,&Shen, Lu.(2017).Adverse effects of increasing drought on air quality via natural processes.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(20). |
MLA | Wang, Yuxuan,et al."Adverse effects of increasing drought on air quality via natural processes".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.20(2017). |
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