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首页> 外文期刊>Air quality, atmosphere & health >Modelled NO2 tropospheric columns at different resolutions versus OMI satellite data: analysis of a 1-year BOLCHEM simulation over Europe
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Modelled NO2 tropospheric columns at different resolutions versus OMI satellite data: analysis of a 1-year BOLCHEM simulation over Europe

机译：与OMI卫星数据相比，不同分辨率的NO2对流层模拟柱：欧洲1年BOLCHEM模拟的分析

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摘要

Model simulations of tropospheric NO2 vertical column density are performed using the online-coupled BOLCHEM model. Model output is compared to ozone monitoring instrument (OMI) data from the Tropospheric Emission Monitoring Internet Service (TEMIS) over Europe for the year 2007. European hot-spots (Po Valley and BeNeLux) are simulated at finer resolution and analysed separately, along with the area of Gibraltar. Standard statistical analysis reveals good model performances, even in highly polluted regions, with spatial correlation 0.90 for the whole of Europe, 0.74 for the Po Valley, 0.85 for BeNeLux and 0.79 for Gibraltar. Seasonal analysis shows some dependency on time, with lowest scores in winter, when the satellite product also suffers weaker statistical significance due to the presence of clouds. The increase in resolution is found to affect the spatial correlation more the Po Valley (+23 %) than in BeNeLux (+5 %). This difference is likely to depend on the very different meteorology of the two hot-spots.
机译：使用在线耦合的BOLCHEM模型进行对流层NO2垂直塔密度的模型模拟。将模型输出与2007年欧洲对流层排放监测互联网服务（TEMIS）的臭氧监测仪器（OMI）数据进行比较。对欧洲热点（Po Valley和BeNeLux）进行了更精细的模拟，并分别进行了分析。直布罗陀地区。标准统计分析甚至在高污染地区也显示出良好的模型性能，整个欧洲的空间相关性为0.90，波谷的为0.74，BeNeLux为0.85，直布罗陀为0.79。季节性分析显示对时间有一定的依赖性，冬季的得分最低，这是因为由于云的存在，卫星产品的统计意义也较弱。发现分辨率的提高对波谷（+ 23％）的影响比对BeNeLux（+ 5％）的影响更大。这种差异很可能取决于两个热点的气象情况。

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