Winter stratospheric warming dynamics above Yakutsk

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Winter stratospheric warming dynamics above Yakutsk

Nikolashkin S.V.¹, Titov S.V.¹, Marichev V.N.², Ignatyev V.M.¹

Institute of Cosmophysical Researches and Aeronomy, Yakutsk
Institute of Atmospheric Optics, Tomsk

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The spatial and temporal characteristics and winter stratospheric temperature wave variations measured
by a Lidar near Yakutsk at the height interval of 20-60 km were studied. The relation between temperature
variations with planetary, tidal and gravity waves during winter stratospheric warming is discussed.
Lidar temperature data analysis for the period 2004-2009 with aerologic radiosounding data and satellite
measurements showed that winter stratospheric warming consist of some short-time localized warming which is
modulated by planetary wave with wavenumber 1 and 90 day period.
The work is supported by the Russian Foundation for Basic Research grant 09-05-98573 and Integration
Project No 15 SB RAS.