Streamer events are induced by breaking of planetary waves near the tropopause. Streamers
are significant transient disturbances to the seasonal circulation patterns in the
tropopause-stratosphere region at mid latitudes. They modify dynamics of the polar
jet stream and of the lower stratosphere. At streamers’ flanks, strong wind shear
occurs and gravity waves can be excited. Western Europe and the surrounding regions
of the North Atlantic are typical regions where streamer events develop.Long range
infrasound propagation is mainly controlled by temperature and wind fields in the
atmosphere. Zonal winds in the stratosphere and jet stream near the tropopause belong
to key factors that drive infrasound propagation.A feasibility study on utilisation
of ground infrasound measurements in research of streamer events was performed under
the ESA’s Aeolus+Inovation project Lidar Measurements to Identify Streamers and Analyse
Atmospheric Waves. Three western stations of the Central and Eastern European Infrasound
Network WBCI (50.25°N 12.44°E), PVCI (50.53°N 14.57°E), and PSZI (47.92°N 19.89°E)
were included in the study of streamer events from February 2020 to March 2021. WBCI
is a large aperture array used for observations of low frequency infrasound in the
frequency range of 0.0033-0.4 Hz. The stations PVCI and PSZI operate in the infrasound
band of 0.05-5 Hz. We focused on statistical comparison of infrasound arrival parameters
in periods influenced by streamer events and on calm days.The presented analysis of
the data of the three infrasound stations located in Central Europe did not identify
significant first order phenomena related to streamer events. Considering further
streamer events and including more stations is necessary to find out if ground infrasound
observations could serve for monitoring of streamer events.
