With the development of modern terrestrial and space-based technologies, the importance of ionospheric research is on the rise, as the ionosphere reflects and modifies radio waves used for communication and navigation. The coupling processes are crucial to our understanding of ionospheric dynamics and variability. The ionosphere is forced from above by various space weather processes of solar origin and internal magnetospheric origin, which all affect the ionosphere through the magnetosphere. The strongest among them are well-developed magnetic storms (both CME- and CIR CH HSS-related), but many other still insufficiently explored do exist. On the other hand, the ionosphere is forced from below mainly (but not only) by atmospheric waves like planetary, tidal and acoustic-gravity waves, those being mostly of tropospheric origin but partly excited also in the stratosphere and at higher layers. The symposium invites (multi)instrumental observation, simulation and modelling studies that address the dynamics of the ionosphere with emphasis on magnetospheric and lower atmospheric forcing and the associated feedback on the ionospheric behaviour.
Contributions dealing with magnetospheric forcing are sought particularly in the areas of ionospheric phenomena caused by magnetospheric storms and substorms, current closure, the deposition of energy in its various forms, and the interaction of electromagnetic waves with the ionosphere. New results that focus on comparison of latitudinal, seasonal and hemispherical effects of magnetic storms and substorms on ionosphere are especially appreciated. As for atmospheric forcing, contributions are sought that focus on atmospheric waves, wave-wave and wave-mean flow interactions, atmospheric electricity and electrodynamical coupling processes.
Also ionospheric effects from other sources, such as solar terminator, solar eclipse, seismic activity or human-made explosions, are welcome.