Regional database of the MODIS Products: analysis and validation

* Corresponding author. ** This work was supported, in part, by the Russian Foundation for Basic Research (project No. 04-07-90018). The data used in this study were acquired as part of the NASA's Earth Science Enterprise. The algorithms were developed by the MODIS Science Teams. The data were processed by the MODIS Adaptive Processing System (MODAPS) and Goddard Distributed Active Archive Center (DAAC), and are archived and distributed by the Goddard DAAC. Abstract – A database of satellite information on the aerosol and meteorological parameters of the atmosphere as well as on the characteristics of cloud cover over Western-Siberian region of Russia is being developed at the Institute of Atmospheric Optics SB RAS. The NOAA data and archives of the MODIS Products (Goddard Distributed Active Archive Center) provide the basis for the database. The use of satellite data for scientific research makes the problem of accuracy of these data urgent. Despite results of validation of the MODIS data have already been available from the literature and INTERNET, we have additionally analyzed this problem for the Tomsk region. Except for the conventional procedure of comparison of satellite and reference data, the validation involves temporal and spatial statistical data analysis. The results of validation demonstrate that a correlation between satellite and reference measurements of aerosol optical thickness and total column precipitable water is high.