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首页> 外文期刊>Physics in Canada >Interpreting Satellite Observations of the Ult raviolet Aerosol Index to Understand Aerosol Scattering and Absorption
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Interpreting Satellite Observations of the Ult raviolet Aerosol Index to Understand Aerosol Scattering and Absorption

机译：解释卫星观察ULT馄饨气溶胶指数以了解气溶胶散射和吸收

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摘要

Aerosols are particles suspended in Earth's atmosphere. They are emitted from a variety of sources, such as motor vehicles, industry, biomass burning, uplifted desert dust, and ocean spray. These particles impact climate through their interactions with solar radiation. Aerosols with scattering properties have a cooling effect on climate as they reflect incoming solar radiation back to outerspace, while aerosols with absorbing properties absorb the incoming solar radiation, which warms the atmosphere and cools the surface. The climate impacts of aerosols are known to be significant; it is estimated that the cooling effect of aerosols has masked approximately one third of the warming due to greenhouse gases [1], while aerosol absorption is estimated to possibly be the second largest source of atmospheric warming after carbon dioxide [2,3]. However, the overall magnitude of the climate effects of aerosols remains highly uncertain, due to the large uncertainties associated with the aerosol particles themselves. Global observations of aerosol scattering and absorption would improve our understanding of how aerosols interact with solar radiation and therefore also improve our understanding of their climate impacts.
机译：气溶胶是悬浮在地球大气层中的颗粒。它们从各种来源排放，如机动车辆，行业，生物量燃烧，升起的沙漠粉尘和海洋喷雾。这些颗粒通过与太阳辐射的相互作用影响了气候。散射特性的气溶胶对气候具有冷却效果，因为它们将传入的太阳辐射反射回外线，而吸收性能的气溶胶吸收入口的太阳辐射，这使气氛变暖并冷却表面。众所周知气溶胶的气候影响是重要的;据估计，由于温室气体[1]，气溶胶的冷却效果大约掩盖了大约三分之一的变暖，而气溶胶吸收估计是二氧化碳后大气升温的第二大源[2,3]。然而，由于与气溶胶颗粒本身相关的大不确定性，气溶胶气候效应的总体幅度仍然高度不确定。全球气溶胶散射和吸收的观察将改善我们对气溶胶的理解如何与太阳辐射相互作用，因此还提高了我们对气候影响的理解。

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  • 来源
    《Physics in Canada》 |2018年第4期|共66页
  • 作者

    Melanie S. Hammer; Randall V. Martin; Aaron van Donkelaar; Chi Li; Virginie Buchard; Omar Torres; Brian L. Boys; David A. Ridley; Robert J.D. Spurr; Max Manning;

  • 作者单位

    Department of Physics and Atmospheric Science Dalhousie University Canada;

    Department of Physics and Atmospheric Science Dalhousie University Canada;

    Department of Physics and Atmospheric Science Dalhousie University Canada;

    Department of Physics and Atmospheric Science Dalhousie University Canada;

    NASA/Goddard Space Flight Center Greenbelt MD USA;

    NASA/Goddard Space Flight Center Greenbelt MD USA;

    Department of Physics and Atmospheric Science Dalhousie University Canada;

    Department of Civil and Environmental Engineering Massachusetts Institute of Technology Cambridge MA USA;

    RT Solutions Inc. 9 Channing Street Cambridge MA 02138 USA;

    Department of Physics and Atmospheric Science Dalhousie University Canada;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;
  • 关键词

    Interpreting; Satellite; Observations;

    机译：解释;卫星;观察;

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