Optical characteristics of atmospheric aerosol over the Volga River and the Black Sea in dust transport periods
D.V. Kalinskaya1,2
1Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
2Marine Hydrophysical Institute National Academy of the RAS, Sevastopol, Russia
Keywords: atmospheric aerosol, photometer, MODIS, VIIRS, AIRS, back trajectories, HYSPLIT, Ångström parameter, dust aerosol, smoke aerosol, aerosol optical depth, AOD, absorption, Black sea, Volga
Abstract
Consideration of absorbing and scattering properties of atmospheric aerosols and estimating the sizes of aerosol particles are important for testing standard and creating regional algorithms of atmospheric correction of satellite data. However, calculation of optical characteristics of atmospheric aerosols in dust transport periods is complicated by a need in considering the effects of dust aerosol on optical properties of the atmosphere: aerosol optical depth (AOD), Ångström parameter, and others. In this work, the optical characteristics of atmospheric aerosol are analyzed based on in-situ photometric measurements, MODIS (Aqua/Terra) and VIIRS satellite data, and HYSPLIT simulation for two Volga reservoirs and the Black Sea during dust transport from the Sahara and Karakum deserts. The AOT values are found to be more than two times higher than background values during all the events under study. No differences in the optical characteristics of dust aerosol transported from these deserts were detected. The results can be used to verify standard algorithms of atmospheric correction of satellite data.
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