Skip to main content
Sky high (Credit: Taro Nakai, distributed via imaggeo.egu.eu)

ST Solar-Terrestrial Sciences Division on Solar-Terrestrial Sciences

EGU logo

European Geosciences Union

Division on Solar-Terrestrial Sciences
st.egu.eu

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.

Recent awardees

David J. McComas

David J. McComas

  • 2022
  • Hannes Alfvén Medal

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.


Víctor M. S. Carrasco

Víctor M. S. Carrasco

  • 2022
  • Division Outstanding Early Career Scientist Award

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.


Chao Yue

Chao Yue

  • 2022
  • Arne Richter Award for Outstanding Early Career Scientists

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.


Volker Bothmer

Volker Bothmer

  • 2021
  • Julius Bartels Medal

The 2021 Julius Bartels Medal is awarded to Volker Bothmer for his outstanding work on understanding the complex nature of coronal mass ejections.


Mateja Dumbović

Mateja Dumbović

  • 2021
  • Arne Richter Award for Outstanding Early Career Scientists

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.

Latest posts from the ST blog

Events organised by the ST Early-Career Scientist (ECS) Team during EGU22: We would like your feedback!

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 …


Reflection after the investigation of the direct First Parker Solar Probe Observation of the Interaction of Two Successive ICMEs

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 …


Resolving the very fine details of the Sun in low frequency radio

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 …


Initiation and Heliospheric Evolution of a stealthy solar eruption

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, …

Current issue of the EGU newsletter

The August issue of The Loupe explores how existing energy resources inform climate change mitigation. Scientists from the Environmental Defense Fund find that while hydrogen is certainly part of the solution to get to net zero, this fuel of the future may not be as clean as we think. Researcher in energy transition under climate change Jarmo Kikstra discusses the delicate intersections between social and natural sciences, and on World Biofuels Day we look at commercially available biofuels around the world and some new ones under development.

Also in this issue: the EGU Biodiversity Task Force’s seven recommendations to the EU Nature Restoration Law which will now be amended and either passed or rejected by the European Parliament and The Council of the European Union. Finally, apply by 12 September to the EGU Policy Pairing scheme to spend a week in Brussels with a Member of the European Parliament (MEP).

Find ST on

Subscribe to

Tweets by @egu_st