Diurnal behavior of aerosol optical depth of the atmosphere in a few regions of Asian Part of Russia

We present an approach to extracting the regular component of diurnal behavior of the aerosol optical depth and columnar water vapor of the atmosphere. The daily average dynamics of these characteristics in Tomsk is compared with that in the suburban background region, as well as in a few other regions: Tomsk, Yekaterinburg, Irkutsk, Yakutsk, and Ussuriisk. We identified common features in the dynamics for the regions of Tomsk, Yekaterinburg, and Irkutsk. Some specific features, caused by the effect of local factors, are revealed for Yakutsk and Ussuriisk. We present parameters of approximation of the daily average behavior of the atmospheric AOD for Yekaterinburg, Tomsk, and Irkutsk.