European Geosciences Union
Division on Solar-Terrestrial Sciences
President: Olga Malandraki
(st@egu.eu)
Deputy President: Emilia Kilpua
(emilia.kilpua@helsinki.fi)
The ST Division considers all aspects of solar and heliospheric physics, specifically the solar-terrestrial connection. It covers the physical processes occurring on the Sun, in the solar wind, as well as in Earth's magnetosphere and ionosphere. Solar activity (e.g. coronal mass ejections, solar flares, solar energetic particle events) and the response of the near-Earth space environment to these solar phenomena are studied on a wide-range of temporal and spatial scales. Data analysis and interpretation of space-borne and ground-based data, as well as theoretical studies and different modeling techniques are used to better our understanding of how our local star defines the neighborhood that we live in.
The 2022 Hannes Alfvén Medal is awarded to David J. McComas for pioneering scientific contributions and technical achievements in solar-terrestrial sciences and in our understanding of the heliosphere and its interaction with the interstellar medium.
The 2022 Division Outstanding Early Career Scientist Award is awarded to Víctor M. S. Carrasco for outstanding research in the field of space climate and solar physics.
The 2022 Arne Richter Award for Outstanding Early Career Scientists is awarded to Chao Yue for innovative contributions to magnetospheric physics, in particular, ring current dynamics and associated wave-particle interactions.
The 2021 Julius Bartels Medal is awarded to Volker Bothmer for his outstanding work on understanding the complex nature of coronal mass ejections.
The 2021 Arne Richter Award for Outstanding Early Career Scientists is awarded to Mateja Dumbović for her innovative contributions to solar and space-weather physics, in particular, regarding the modelling and observational studies of Forbush decreases, CME propagation, and geo-effectivity.
Now that EGU22 is over, it is time to gather some feedback! While you can provide your comments and suggestions on the General Assembly as a whole via the dedicated form available through the EGU22 website (see “Feedback” tab in https://www.egu22.eu/), the ST Division’s Early-Career Scientist (ECS) Team would very much appreciate getting feedback on the various events they have organised during this first-ever fully hybrid EGU General Assembly. It is very important for us to know what worked and …
In Heliophysics there is a scarcity of in-situ buoys that allows us to monitor and track the solar wind changes in our Sun’s atmosphere, the heliosphere. NASA’s Parker Solar Probe (PSP) mission is one of those buoys that, together with Solar Orbiter (SolO, ESA/NASA Collaboration), is bringing a breath of fresh air in the effort to fully characterize the solar wind and study the evolution of the embedded structures. These structures have different scales, but the large-scale structures are the …
The Sun is an active radio emitter, it produces radio emissions in a wide frequency range from kHz to THz. The solar atmosphere has a complex distribution of magnetic field, plasma density, and temperature. These different properties of the solar atmosphere will result in different radio emission features at different frequencies. In principle, the plasma density decreases with the heliocentric distance, and higher density plasma tends to generate higher frequency radio emissions, thus the features in lower frequency correspond to …
In the early 1970s, when Coronal mass ejections (CMEs), massive eruptions of magnetized solar plasma into interplanetary space, were first discovered, they were assumed to be always associated with the energetic solar phenomenon like solar flares, prominences, etc. With improved coronagraphic and multi-wavelength observational instruments, a class of CMEs emerging from the streamers was found and named Streamer-blowout CMEs (SBO-CMEs; Vourlidas et al. 2018). These CMEs have signatures of flux ropes but have no direct association with solar active regions, …
The September issue of the newsletter is a special one: the European Geosciences Union turns 20! Read on to hear how EGU President Helen Glaves and EGU Executive Secretary Philippe Courtial reflect on two decades of the Union and the road ahead, while our Division Presidents tell us what this 20-year milestone means to them.
Also in this issue: A much-needed top 5 careers resources made by our EGU community, and a list of the top 10 most useful resources for scientists wanting to impact policy in Europe. Registrations are now open to support EU’s biodiversity targets by bridging the science-policy divide – an in-person and virtual event to help researchers better support the EU’s biodiversity targets and EU Nature Restoration Law.