利用静止卫星MTSAT反演大气气溶胶光学厚度

A retrieval of the atmospheric aerosol optical depth from MTSAT

中文关键词:  MTSAT静止卫星，气溶胶光学厚度，地表反射率，AERONET,MODIS

英文关键词:MTSAT geostationary satellite, Aerosol optical depth, Surface reflectance, AERONET, MODIS

中文摘要:

      卫星遥感是获取气溶胶光学特性的重要手段，利用静止卫星可见光通道资料反演气溶胶光学厚度（AOD）的算法使用日本静止气象卫星MTSAT可见光通道资料反演了2008年5月中国地区陆地上的气溶胶光学厚度，将得到的结果分别与AERONET站点的地面观测值进行比较，得到了较好的线性相关关系，再将其与相应的MODIS气溶胶光学厚度产品进行比，也得到了较为一致的分布，表明MTSAT反演的气溶胶光学厚度产品可以反映大气气溶胶光学厚度的日变化信息。最后对这种反演算法的误差来源进行了分析。

英文摘要:

      Satellite remote sensing is an important technology to acquire the optical characteristics of aerosol. In order to get the aerosol products with the time resolution higher than those from polar orbit satellites and the space coverage larger than those from ground based measurements, the data from Japanese MTSAT geostationary satellite were used to retrieve the aerosol optical depth (AOD) over China. The comparison of the results with AERONET observations shows good linear dependent relations, and the comparison with MODIS products also reveals a consistent distribution pattern. Finally the error sources about the retrieving algorithm were discussed.