• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Air quality, atmosphere & health >Impacts of intercontinental transport of anthropogenic fine particulate matter on human mortality
【24h】

Impacts of intercontinental transport of anthropogenic fine particulate matter on human mortality

机译：人为细颗粒物的洲际运输对人类死亡率的影响

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fine particulate matter with diameter of 2.5 μm or less (PM2.5) is associated with premature mortality and can travel long distances, impacting air quality and health on intercontinental scales. We estimate the mortality impacts of 20 % anthropogenic primary PM2.5 and PM2.5 precursor emission reductions in each of four major industrial regions (North America, Europe, East Asia, and South Asia) using an ensemble of global chemical transport model simulations coordinated by the Task Force on Hemispheric Transport of Air Pollution and epidemiologically-derived concentration-response functions. We estimate that while 93–97 % of avoided deaths from reducing emissions in all four regions occur within the source region, 3–7 % (11,500; 95 % confidence interval, 8,800–14,200) occur outside the source region from concentrations transported between continents. Approximately 17 and 13 % of global deaths avoided by reducing North America and Europe emissions occur extraregionally, owing to large downwind populations, compared with 4 and 2 % for South and East Asia. The coarse resolution global models used here may underestimate intraregional health benefits occurring on local scales, affecting these relative contributions of extraregional versus intraregional health benefits. Compared with a previous study of 20 % ozone precursor emission reductions, we find that despite greater transport efficiency for ozone, absolute mortality impacts of intercontinental PM2.5 transport are comparable or greater for neighboring source-receptor pairs, due to the stronger effect of PM2.5 on mortality. However, uncertainties in modeling and concentration-response relationships are large for both estimates.
机译：直径小于等于2.5μm（PM2.5）的细颗粒物会导致过早死亡，并且可能会传播很长一段距离，从而影响洲际范围内的空气质量和健康。我们使用协调协调的全球化学传输模型模拟估算了四个主要工业区（北美，欧洲，东亚和南亚）中每一个的人为主要PM2.5和PM2.5前体排放量减少20％的死亡率影响由大气污染的半球运输和流行病学派生的浓度响应功能工作组负责。我们估计，虽然在所有四个区域中减少排放所避免的死亡中有93％至97％发生在源区域内，但有3％至7％（11,500; 95％置信区间为8,800-14,200）发生在源区域外，是由于各大洲之间的运输所致。通过减少北美和欧洲的排放量避免的全球死亡人数中约有17％和13％发生在区域外，这是由于顺风人口众多，而南亚和东亚分别为4％和2％。此处使用的粗略分辨率全球模型可能会低估在地方尺度上发生的区域内健康益处，从而影响区域外与区域内健康益处的这些相对贡献。与之前的20％的臭氧前体排放量减少的研究相比，我们发现尽管臭氧的传输效率更高，但由于PM2的作用更强，洲际PM2.5传输的绝对死亡率影响与相邻的源-受体对相当或更大.5死亡率。但是，对于这两种估计，建模和浓度-响应关系的不确定性都很大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号