...
首页> 外文期刊>Environmental Science & Technology >Global Chemical Composition of Ambient Fine Particulate Matter for Exposure Assessment
【24h】

Global Chemical Composition of Ambient Fine Particulate Matter for Exposure Assessment

机译:用于暴露评估的环境细颗粒物的全球化学组成

获取原文
获取原文并翻译 | 示例
           

摘要

Epidemiologic and health impact studies are inhibited by the paucity of global, long-term measurements of the chemical composition of fine particulate matter. We inferred PM_(2.5) chemical composition at 0.1° × 0.1° spatial resolution for 2004-2008 by combining aerosol optical depth retrieved from the MODIS and MISR satellite instruments, with coincident profile and composition information from the GEOS-Chem global chemical transport model. Evaluation of the satellite-model PM_(2.5) composition data set with North American in situ measurements indicated significant spatial agreement for secondary inorganic aerosol, paniculate organic mass, black carbon, mineral dust, and sea salt. We found that global population-weighted PM_(2.5) concentrations were dominated by particulate organic mass (11.9 ± 7.3 μg/m~3), secondary inorganic aerosol (11.1 ± 5.0 μg/m~3), and mineral dust (11.1 ± 7.9 μg/m~3). Secondary inorganic PM_(2.5) concentrations exceeded 30 μg/m~3 over East China. Sensitivity simulations suggested that population-weighted ambient PM_(2.5) from biofuel burning (11 μg/m~3) could be almost as large as from fossil fuel combustion sources (17 μg/m~3). These estimates offer information about global population exposure to the chemical components and sources of PM_(2.5).
机译:流行病学和健康影响研究由于缺乏对细颗粒物化学成分的全球长期测量而受到限制。我们结合从MODIS和MISR卫星仪器获得的气溶胶光学深度,以及从GEOS-Chem全球化学迁移模型获得的一致剖面和成分信息,推断出2004-2008年空间分辨率为0.1°×0.1°的PM_(2.5)化学成分。对北美地区原位测量的卫星模型PM_(2.5)组成数据集的评估表明,次生无机气溶胶,颗粒有机质,黑碳,矿物粉尘和海盐具有显着的空间一致性。我们发现全球人口加权PM_(2.5)浓度主要由有机颗粒物(11.9±7.3μg/ m〜3),次生无机气溶胶(11.1±5.0μg/ m〜3)和矿物粉尘(11.1±7.9)决定。 μg/ m〜3)。华东地区的次生无机PM_(2.5)浓度超过30μg/ m〜3。敏感性模拟表明,生物燃料燃烧产生的人口加权环境PM_(2.5)(11μg/ m〜3)几乎与化石燃料燃烧产生的环境PM_(2.5)(17μg/ m〜3)一样大。这些估计值提供了有关全球人口暴露于PM_(2.5)的化学成分和来源的信息。

著录项

  • 来源
    《Environmental Science & Technology》 |2014年第22期|13060-13068|共9页
  • 作者单位

    Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada;

    Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada,Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, United States;

    Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada;

    Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada;

    Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Institute for Global Change Studies, Tsinghua University, Beijing 100084, China;

    Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095, United States;

    Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China;

    Nicholas School of the Environment and Earth Sciences, Duke University, Durham, North Carolina 27708, United States;

    State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China;

    Center for Earth System Science, Tsinghua University, Beijing 100084, China;

    Decision and Information Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States;

    Decision and Information Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States;

    Agriculture and Agri-Food Canada, Agassiz, British Columbia V0M 1A2, Canada;

    Environment Canada, Gatineau, Quebec K1A 0H3, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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