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Air quality simulations for North America - MM5-CAMx modelling performance for main gaseous pollutants

机译：北美的空气质量模拟-主要气态污染物的MM5-CAMx建模性能

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摘要

In the scope of the Air Quality Model Evaluation International Initiative (AQMEII) the air quality modelling system MM5-CAMx was applied to the North American (NA) domain for calendar year 2006. The simulation domain was defined according to the spatial resolution and the coordinate system of the emission databases provided and the common grid required by AQMEII for ensemble analysis. A Lambert Conformal Projection grid of around 5500 km by 3580 km with 24×24 km~2 horizontal resolution was defined. Emissions available through AQMEII have been prepared to feed the CAMx model. Meteorological inputs were developed by the application of the meteorological model MM5, which was initialized by 1° resolution NCEP-FNL global data and run for the whole year of 2006. A spatial and temporal analysis of results based on the 2D surface fields and time series for regional monitoring stations was performed for the main gaseous pollutants. A detailed statistical analysis and evaluation against observations was carried out, considering three different sub-domains over North America, in order to comprehend the differences between the East, West and Central part. The exploitation of modelling results was based on the capabilities and analysis tools available through the ENSEMBLE software, developed and upgraded for AQMEII. Results have shown a good agreement between observed and modelled concentrations of O_3 (especially regarding peaks) and NO_2 and a weaker performance of the air quality model for CO and SO_2. However, the model tends to underestimate O_3 and overestimate NO_2 and CO at night as a consequence of meteorology (weak vertical mixing due to underestimation of the Planetary Boundary Layer (PBL) height). This paper intends to be a valuable contribution to the overall AQMEII exercise since it aims to evaluate the performance of individual models to be used in the ensemble approach for the areas of interest.
机译：在国际空气质量模型评估倡议（AQMEII）的范围内，将空气质量建模系统MM5-CAMx应用于2006日历年的北美（NA）域。根据空间分辨率和坐标定义模拟域提供的排放数据库系统以及AQMEII进行整体分析所需的通用网格。定义了一个5500 km x 3580 km左右，水平分辨率为24×24 km〜2的Lambert等角投影网格。通过AQMEII可获得的排放物已经准备好供给CAMx模型。气象输入是通过应用气象模型MM5开发的，该模型以1°分辨率NCEP-FNL全球数据进行了初始化，并在2006年全年运行。基于二维地表和时间序列的结果的时空分析对主要气体污染物的区域监测站进行了监测。针对北美地区的三个不同子域，进行了针对观察结果的详细统计分析和评估，以了解东西部之间的差异。对建模结果的利用是基于为AQMEII开发和升级的ENSEMBLE软件提供的功能和分析工具。结果表明，O_3的浓度（尤其是峰值）和NO_2的观测值与模型值之间具有很好的一致性，而CO和SO_2的空气质量模型的性能较弱。然而，由于气象（由于低估了行星边界层（PBL）的高度，垂直混合很弱），该模型在夜间往往会低估O_3并高估NO_2和CO。本文旨在为整个AQMEII练习做出有价值的贡献，因为它旨在评估用于感兴趣区域的集成方法中使用的各个模型的性能。

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  • 来源
    《Atmospheric environment》 |2012年第6期|p.212-224|共13页
  • 作者

    J. Ferreira; A. Rodriguez; A. Monteiro; A.I. Miranda; M. Dios; J.A. Souto; G. Yarwood; U. Nopmongcol; C. Borrego;

  • 作者单位

    CESAM & Department of Environment and Planning, University of Aveiro, 3810-183 Aveiro, Portugal;

    Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;

    CESAM & Department of Environment and Planning, University of Aveiro, 3810-183 Aveiro, Portugal;

    CESAM & Department of Environment and Planning, University of Aveiro, 3810-183 Aveiro, Portugal;

    Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;

    Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;

    ENVIRON International Corporation, Novato, CA 94998, USA;

    ENVIRON International Corporation, Novato, CA 94998, USA;

    CESAM & Department of Environment and Planning, University of Aveiro, 3810-183 Aveiro, Portugal;

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  • 正文语种 eng
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  • 关键词

    air quality model performance; air quality assessment; north america;

    机译：空气质量模型性能;空气质量评估;北美;

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