Observation of polar stratospheric clouds in the stratosphere over Tomsk in February 2025
A.V. Nevzorov, S.I. Dolgii, A.P. Makeev, V.N. Marichev, D.A. Bochkovsky, N.S. Salnikova, O.V. Kharchenko
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: laser atmospheric sounding, lidar, stratospheric aerosol, polar stratospheric clouds
Abstract
During long-term measurements at two lidar stations of Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, pronounced aerosol layers were recorded in the stratosphere over Tomsk on February 5 and 6, 2025. The analysis of lidar and additional meteorological information showed the occurrence of a rather rare phenomenon for middle latitudes, polar stratospheric clouds, at that time. The constructed back trajectories of air masses at the altitudes of the formation of polar stratospheric clouds over Tomsk showed that abnormally cold air masses were brought from the polar regions of Norway and Greenland. The results can be useful for specialists in atmospheric physics, climatology, and environmental protection.
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