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首页> 外文期刊>Environmental Pollution >Improvement of aerosol optical properties modeling over Eastern Asia with MODIS AOD assimilation in a global non-hydrostatic icosahedral aerosol transport model
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Improvement of aerosol optical properties modeling over Eastern Asia with MODIS AOD assimilation in a global non-hydrostatic icosahedral aerosol transport model

机译:在全球非静水二十面体气溶胶传输模型中使用MODIS AOD同化改进东亚地区的气溶胶光学特性模型

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摘要

A new global aerosol assimilation system adopting a more complex icosahedral grid configuration is developed. Sensitivity tests for the assimilation system are performed utilizing satellite retrieved aerosol optical depth (AOD) from the Moderate Resolution Imaging Spectroradiometer (MODIS), and the results over Eastern Asia are analyzed. The assimilated results are validated through independent Aerosol Robotic Network (AERONET) observations. Our results reveal that the ensemble and local patch sizes have little effect on the assimilation performance, whereas the ensemble perturbation method has the largest effect. Assimilation leads to significantly positive effect on the simulated AOD field, improving agreement with all of the 12 AERONET sites over the Eastern Asia based on both the correlation coefficient and the root mean square difference (assimilation efficiency). Meanwhile, better agreement of the Angstrom Exponent (AE) field is achieved for 8 of the 12 sites due to the assimilation of AOD only.
机译:开发了一种采用更复杂的二十面体网格配置的新型全球气溶胶吸收系统。利用从中分辨率成像光谱仪(MODIS)检索到的卫星气溶胶光学深度(AOD),对同化系统进行了敏感性测试,并对东亚地区的结果进行了分析。被吸收的结果通过独立的气溶胶机器人网络(AERONET)观察得到验证。我们的结果表明,集合和局部补丁大小对同化性能影响很小,而集合摄动方法的影响最大。同化作用对模拟的AOD场产生明显的积极影响,基于相关系数和均方根差(同化效率),提高了与东亚12个AERONET站点的一致性。同时,由于仅吸收了AOD,在12个位点中的8个位点获得了更好的Angstrom Exponent(AE)场一致性。

著录项

  • 来源
    《Environmental Pollution》 |2014年第12期|319-329|共11页
  • 作者单位

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing, China,Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan;

    Atmosphere, Ocean and Planetary Physics, University of Oxford, UK;

    National Institute for Environmental Studies, Tsukuba, Japan;

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;

    Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan;

  • 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

    Non-hydrostatic icosahedral aerosol model; Aerosol assimilation; Eastern Asia; Aerosol optical properties;

    机译:非静水二十面体气溶胶模型;气溶胶吸收东亚;气溶胶光学性质;

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