Impact of Meteorological Storm Fabienne on 23 September 2018 on Ionospheric Variability

0508414 - ÚFA 2020 BG eng A - Abstract
Koucká Knížová, Petra - Podolská, Kateřina - Potužníková, Kateřina - Kouba, Daniel - Mošna, Zbyšek - Boška, Josef - Kozubek, Michal
Impact of Meteorological Storm Fabienne on 23 September 2018 on Ionospheric Variability.
Book of Abstracts: Eleventh Workshop "Solar Influences on the Magnetosphere, Ionosphere and Atmosphere". Sofia: Space Research and Technology Institute, Bulgarian Academy of Sciences, 2019 - (Georgieva, K.). s. 35
[Workshop "Solar Influences on the Magnetosphere, Ionosphere and Atmosphere" /11./. 03.06.2019-07.06.2019, Primorsko]
Institutional support: RVO:68378289
Keywords : vertical coupling * ionosphere * atmospheric waves * tides * ionospheric plasma drifts * atmospheric cold front * Fabienne cyclone * meteorological storm event
OECD category: Meteorology and atmospheric sciences
http://ws-sozopol.stil.bas.bg/

Severe meteorological storm system on the frontal border of cyclone Fabienne passing
above Central Europe was observed on 23-24 September 2018. Large meteorological systems are
considered to be important sources of the wave-like variability visible/detectable through the
atmosphere and even up to ionosphere heights. Meteorological Storm event coincides with
minor-moderate geomagnetic storm observed in the ionosphere. Concentration in the ionosphere
decreased for two day (negative storm) represented by TEC drop of about 1.5 TECu. Significant
departures from regular courses of atmospheric and ionospheric parameters were detected in all
analyzed data sets through atmospheric heights. Above Europe, stratospheric temperature and
wind significantly changed in coincidence with fast frontal transition. Zonal wind at 1 and 0.1
hPa changes from usual westward before storm to eastward after storm. With this changes are
connected changes in temperature where at 1 hPa analyzed area is colder and at 0.1 hPa warmer.
Within ionospheric parameters, we have detected significant wave-like activity occurring shortly
after the cold front crossed the observational point. During the storm event, both by Digisonde
DPS-4D and Continuous Doppler Sounding equipment, we have observed strong horizontal
plasma flow shears and time-limited increase plasma flow in both North and West components
of ionospheric drift. Vertical component of plasma flow during the storm event is smaller with
respect to corresponding values on preceding days.
Permanent Link: http://hdl.handle.net/11104/0299327