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Abiotic Mechanism for the Formation of Atmospheric Nitrous Oxide from Ammonium Nitrate

机译：硝酸铵形成大气中一氧化二氮的非生物机制

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摘要

Nitrous oxide (H_2O) is an important greenhouse gas and a primary cause of stratospheric ozone destruction. Despite its importance, there remain missing sources in the H_2O budget. Here we report the formation of atmospheric nitrous oxide from the decomposition of ammonium nitrate via an abiotic mechanism that is favorable in the presence of light, relative humidity and a surface. This source of H_2O is not currently accounted for in the global H_2O budget. Annual production of H_2O from atmospheric aerosols and surface fertilizer application over the continental United States from this abiotic pathway is estimated from results of an annual chemical transport simulation with the Community Multiscale Air Quality model (CMAQ). This pathway is projected to produce 9.3+a7/ 5'3 Gg H_2O annually over North America. H_2O production by this mechanism is expected globally from both megacities and agricultural areas and may become more important under future projected changes in anthropogenic emissions.
机译：一氧化二氮（H_2O）是重要的温室气体，是平流层臭氧破坏的主要原因。尽管它很重要，但是H_2O预算中仍然缺少来源。在这里，我们报告了通过非生物机制由硝酸铵分解形成的大气中的一氧化二氮，这种机制在存在光，相对湿度和表面的情况下是有利的。目前，H_2O的这种来源不在全球H_2O预算中。通过使用社区多尺度空气质量模型（CMAQ）进行的年度化学迁移模拟结果，可以估算出从美国非生物途径通过大气气溶胶产生的H_2O以及通过该非生物途径在美国大陆上施用的表面肥料。预计该途径在北美每年产生9.3 + a7 / 5'3 Gg H_2O。预计全球都会在大城市和农业地区通过这种机制生产H_2O，并且在未来人为排放量的预计变化下可能会变得越来越重要。

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  • 来源
    《Environmental Science & Technology》 |2011年第7期|p.2691-2697|共7页
  • 作者

    Gayan Rubasinghege; Scott N. Spak; Charles O. Starrier; Gregory R. Carmichael; Vicki H. Grassian;

  • 作者单位

    Department of Chemistry Engineering, University of Iowa, Iowa City Iowa 52242, United States;

    Center for Global and Regional Environmental Research Engineering, University of Iowa, Iowa City Iowa 52242, United States;

    Center for Global and Regional Environmental Research Engineering, University of Iowa, Iowa City Iowa 52242, United States,Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City Iowa 52242, United States;

    Center for Global and Regional Environmental Research Engineering, University of Iowa, Iowa City Iowa 52242, United States,Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City Iowa 52242, United States;

    Department of Chemistry Engineering, University of Iowa, Iowa City Iowa 52242, United States,Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City Iowa 52242, United States;

  • 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);
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  • 正文语种 eng
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