首页> 外文会议>2011 19th International Conference on Geoinformatics >Correlation between MODIS aerosol optical depth and air pollution index — A case study of Zhengzhou city in Henan Province, China
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Correlation between MODIS aerosol optical depth and air pollution index — A case study of Zhengzhou city in Henan Province, China

机译:MODIS气溶胶光学深度与空气污染指数的相关性-以河南省郑州市为例

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The Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on NASA's Terra satellite provides high quality data for retrieval of aerosol optical depth (AOD). In this paper, a novel approach is proposed to retrieve AOD at 1000m resolution over Zhengzhou city. Then Correlation analysis of AOD derived from MODIS data and Air Pollution Index (API) measured at 3 monitoring sites affiliated to Zhengzhou Environmental Protection Agency (EPA) in 2009 shows the average value of the correlation coefficients from the 3 sites is only 0.2936. When AOD is amended by aerosol scaling height (ASH), it rises to 0.4142. Then the regression analysis of API with the corrected AOD, Angstrom exponent and water vapor content shows that AOD from MODIS data can be an effective token of API and distribution maps of API can be drawn using the model derived from the regression analysis.
机译:NASA Terra卫星上的中等分辨率成像光谱仪(MODIS)传感器可提供高质量的数据,用于检索气溶胶光学深度(AOD)。本文提出了一种新颖的方法来检索郑州市1000m分辨率的AOD。然后,根据2009年在郑州市环境保护局(EPA)的3个监测点测得的MODIS数据和空气污染指数(API)得出的AOD的相关性分析表明,这3个站点的相关系数平均值仅为0.2936。当通过气溶胶缩放高度(ASH)修改AOD时,它会升至0.4142。然后用校正后的AOD,埃指数和水蒸气含量对API进行回归分析,结果表明,来自MODIS数据的AOD可以作为API的有效标记,并且可以使用从回归分析得出的模型绘制API的分布图。

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