ST3.6 
Ionosphere – upper atmosphere
physics with ground-based instrumentation
Dear colleagues,
As the AGU Fall Meeting
is around the corner, this means that it is also EGU abstract
submission season! The EGU General Assembly will take place as a
hybrid conference (in Vienna, Austria and online) on 23–28 April
2023.
We would like to draw your attention to Session ST3.6: Ionosphere – upper atmosphere physics with ground-based instrumentation. The session description can be found at the bottom of this e-mail.
Please note that the abstract submission deadline for EGU23 is on Tuesday, 10 January 2023 at 13:00 CEST. Guidelines on the abstract submission process can be found on this page.
Please do not hesitate
to forward this announcement to your colleagues who make use of
ground-based instrument data in their studies of upper
atmospheric and ionospheric processes.
We are looking forward to your contributions and to seeing you at EGU23!
Best regards,
The EGU ST3.6 session convening team:
Veronika Haberle, Maxime Grandin, Jia Jia, and Frederic Pitout
***************************************************************
The Earth’s upper
atmosphere and ionosphere are subject to significant variability
associated with solar forcing. While in situ observations of the
ionosphere-upper atmosphere are only possible with spacecraft
and sounding rockets, a wealth of information is obtained thanks
to remote sensing techniques using ground-based instruments.
For instance, ground-based magnetometers, used in dense
networks, routinely enable the derivation of ionospheric
currents and geomagnetic indices. Optical instruments not only
provide measurements of auroral and airglow emissions, but are
also used to observe upper atmospheric winds and temperatures,
e.g. in the thermosphere and mesosphere. Such parameters can
also be measured with radars, spanning a wide range of active
(ionosondes, meteor radars, coherent and incoherent scatter
radars, VLF transmitters, Lidars) and passive (riometers, VLF
receivers) systems.
Combining ground-based observations from various instruments
enables the development of novel data analysis methodologies
which in turn enhance our understanding of the underlying
physics of space weather and ionosphere-upper atmosphere
processes. This includes the study of densities, temperatures
and composition of the ionosphere–upper atmosphere, monitoring
of its dynamics and chemistry, and measuring of fluxes from
precipitating particles and current systems.
In this session, we invite contributions featuring the use of
ground-based instruments in studies of the ionosphere–upper
atmosphere system across all latitudes and of space weather and
ionospheric–atmospheric physics processes of various time and
spatial scales.