Sky high (Credit: Taro Nakai, distributed via

ST Solar-Terrestrial Sciences Division on Solar-Terrestrial Sciences

EGU logo

European Geosciences Union

Division on Solar-Terrestrial Sciences

Division on Solar-Terrestrial Sciences

President: Olga Malandraki (
Deputy President: Margit Haberreiter (

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

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.

Qiugang Zong

Qiugang Zong

  • 2020
  • Hannes Alfvén Medal

The 2020 Hannes Alfvén Medal is awarded to Qiugang Zong for his outstanding contributions to the identification of the particle acceleration mechanisms in the magnetosphere and to the development of space plasma physics instrumentation.

Lauri Holappa

Lauri Holappa

  • 2020
  • Division Outstanding Early Career Scientist Award

The 2020 Division Outstanding Early Career Scientist Award is awarded to Lauri Holappa for outstanding research in the field of space climate and space weather.

Latest posts from the ST blog

First year of Energetic Particle Measurements with EPD  aboard Solar Orbiter

First year of Energetic Particle Measurements with EPD aboard Solar Orbiter

One year ago, the Energetic Particle Detector (EPD) aboard the European Space Agency’s (ESA’s) Sun observing spacecraft Solar Orbiter (SolO) was launched starting a long-awaited journey. SolO (Figure 1) will provide both in-situ and remote sensing measurements in the inner Heliosphere and EPD will contribute particularly to the latter ones. EPD consists of four sensors that share the same Instrument Control Unit (ICU). These units are: STEP (Supra-Thermal Electron Proton) a sensor that measures electrons and ions with energies between …

Meet the Experts: The future of solar terrestrial research

Every year at the EGU General Assembly renowned experts from the field of Solar-Terrestrial research get together to give inspirational talks and to meet with early career scientists. This year’s “Meet the Experts” session is focusing on the future of solar terrestrial research. To think of the future, we first have a look at the past, and more precisely on the knowledge acquired with over half a century of ground based and spaceborne observations. We will learn about the advances …

So… Who Cares about Switchbacks?

Explaining the Mysterious Plethora of Short Magnetic Field Reversals Observed by Parker Solar Probe and their Relation to the Origin of Solar Wind. In Switchbacks Explained: Super-Parker Fields – the Other Side of the Sub-Parker Spiral, N. A. Schwadron and D. J. McComas provide a simple geometric explanation for the source of “switchbacks” and associated large and one-sided transverse flows in the solar wind observed by Parker Solar Probe as it ventured close to the Sun. The mystery of the …

Tips on engaging outside of your echo chamber

In my previous blog, I highlighted that public engagement needs to go beyond traditional approaches such as lectures, since these tend to only attract audiences who are already highly interested in science. However, our science is relevant to (and funded by) everyone, so we have a duty to engage beyond simply this “scientific echo chamber”. But how do you even approach attempting this? It seems like a very daunting task, but I’ll try and break down some introductory steps that …

Current issue of the EGU newsletter

In May’s issue of the Loupe we are recognising the incredible efforts of our members and volunteers in bringing vEGU21 to fruition and looking ahead to the upcoming year, with new volunteer members of the Early Career Scientist teams, and the fast approaching deadline for the Award and Medal nominations. This issue features two EGU divisions: Geodynamics (GD) and Earth Magnetism and Rock Physics (EMRP).

The Loupe also shares a report by 2021 Science Policy pairing scheme scientist Renée Bichler about her experiences doing a virtual Science Policy pairing scheme placement with MEP Maria Spyraki, and hears from the Earth Magnetism and Rock Physics Division Early Career Scientist Saioa Arquero about her Division’s plans for the future.

In addition to the latest Journal Watch and GeoRoundup of May EGU journal highlights, this issue also highlights the Science Policy events calendar to help you find your next opportunity to build your science policy network.

Find ST on

Subscribe to

Tweets by @egu_st