globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2016.12.025
Scopus记录号: 2-s2.0-85007071320
论文题名:
Responses of human health and vegetation exposure metrics to changes in ozone concentration distributions in the European Union, United States, and China
作者: Lefohn A; S; , Malley C; S; , Simon H; , Wells B; , Xu X; , Zhang L; , Wang T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 152
起始页码: 123
结束页码: 145
语种: 英语
英文关键词: Binning concentrations ; Exposure metrics ; NOx scavenging ; Ozone distributions ; Shifting concentrations ; Trends
Scopus关键词: Emission control ; Ozone ; Vegetation ; Concentration distributions ; Control strategies ; Exposure metrics ; Low concentrations ; Median concentration ; Ozone concentration ; Ozone distribution ; Trends ; Health ; ozone ; surface ozone ; unclassified drug ; concentration (composition) ; emission control ; European Union ; nitrogen oxides ; occupational exposure ; ozone ; public health ; scavenging (chemistry) ; spatial distribution ; trend analysis ; vegetation dynamics ; air pollution ; air pollution control ; Article ; China ; compression ; European Union ; exposure ; geographic distribution ; health ; Hong Kong ; human ; priority journal ; United States ; vegetation ; China ; Hong Kong ; United States
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: The impacts of surface ozone (O3) on human health and vegetation have prompted O3precursor emission reductions in the European Union (EU) and United States (US). In contrast, until recently, emissions have increased in East Asia and most strongly in China. As emissions change, the distribution of hourly O3concentrations also changes, as do the values of exposure metrics. The distribution changes can result in the exposure metric trend patterns changing in a similar direction as trends in emissions (e.g., metrics increase as emissions increase) or, in some cases, in opposite directions. This study, using data from 481 sites (276 in the EU, 196 in the US, and 9 in China), investigates the response of 14 human health and vegetation O3exposure metrics to changes in hourly O3concentration distributions over time. At a majority of EU and US sites, there was a reduction in the frequency of both relatively high and low hourly average O3concentrations. In contrast, for some sites in mainland China and Hong Kong, the middle of the distribution shifted upwards but the low end did not change and for other sites, the entire distribution shifted upwards. The responses of the 14 metrics to these changes at the EU, US, and Chinese sites were varied, and dependent on (1) the extent to which the metric was determined by relatively high, moderate, and low concentrations and (2) the relative magnitude of the shifts occurring within the O3concentration distribution. For example, the majority of the EU and US sites experienced decreasing trends in the magnitude of those metrics associated with higher concentrations. For the sites in China, all of the metrics either increased or had no trends. In contrast, there were a greater number of sites that had no trend for those metrics determined by a combination of moderate and high O3concentrations. A result of our analyses is that trends in mean or median concentrations did not appear to be well associated with some exposure metrics applicable for assessing human health or vegetation effects. The identification of shifting patterns in the O3distribution and the resulting changes in O3exposure metrics across regions with large emission increases and decreases is an important step in examining the linkage between emissions and exposure metric trends. The results provide insight into the utility of using specific exposure metrics for assessing emission control strategies. � 2016 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82392
Appears in Collections:气候变化事实与影响

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作者单位: A.S.L. & Associates, 302 North Last Chance Gulch, Helena, MT, United States; Stockholm Environment Institute, Environment Department, University of York, York, United Kingdom; Office of Air Quality Planning and Standards, U.S. EPA, Research Triangle Park, NC, United States; Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, Zhongguancun Nandajie 46, Beijing, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China

Recommended Citation:
Lefohn A,S,, Malley C,et al. Responses of human health and vegetation exposure metrics to changes in ozone concentration distributions in the European Union, United States, and China[J]. Atmospheric Environment,2017-01-01,152
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