Features of the vertical distribution of air temperature over Tomsk during sudden stratospheric warming in winter 2023 according to data from the Siberian lidar station
O.Yu. Antokhina1,2, S.M. Bobrovnikov1, V.I. Zharkov1, O.S. Zorkaltseva2, D.A. Trifonov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2Institute of Solar-Terrestrial Physics of the Siberian Branch of the RAS, Irkutsk, Russia
Keywords: lidar, temperature, atmosphere, Raman scattering, sudden stratospheric warming
Abstract
Atmospheric temperature anomalies associated with sudden stratospheric warmings (SSWs) observed over the territory of Siberia require detailed study. In Siberia, there are few instruments that can provide the necessary information on the vertical distribution of atmospheric temperature. Unique lidar of the Siberian Lidar Station (SLS) of V.E. Zuev Institute of Atmospheric Optics SB RAS, Tomsk, Russia (56.48° N, 85.05° E), developed for regular lidar measurements of atmospheric parameters, is one of few ground-based devices in Siberia which provide necessary data on the vertical stratification of atmospheric temperature during a SSW event. To determine the characteristics of atmospheric temperature anomalies during the SSW period in winter 2023 over Tomsk, data on atmospheric temperature in individual nights obtained by the SLS lidar, the WACCM model, the standard mid-latitude winter model, and the ERA5 reanalysis were compared. For the first time, the possibility of using vertical atmospheric temperature profiles obtained by the Raman scattering method to study the SSW effect is show. Use of lidar air temperature profiles to analyze changes in the vertical structure of the atmosphere during sudden stratospheric warmings is demonstrated.
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