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European Geosciences Union

Division on Solar-Terrestrial Sciences
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Division on Solar-Terrestrial Sciences

President: Olga Malandraki (st@egu.eu)
Deputy President: vacant

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

Daniel N. Baker

Daniel N. Baker

  • 2019
  • Hannes Alfvén Medal

The 2019 Hannes Alfvén Medal is awarded to Daniel N. Baker for outstanding, multi-faceted contributions to the near-Earth space plasma environment research and predictions, Earth’s radiation belt environment monitoring, and planetary space plasma studies.


Masatoshi Yamauchi

Masatoshi Yamauchi

  • 2019
  • Julius Bartels Medal

The 2019 Julius Bartels Medal is awarded to Masatoshi Yamauchi for extraordinary work in space physics and planetary science.


Chao Xiong

Chao Xiong

  • 2019
  • Division Outstanding Early Career Scientists Award

The 2019 Division Outstanding Early Career Scientists Award is awarded to Chao Xiong for outstanding research on space weather effects on the thermosphere and ionosphere.


Eckart Marsch

Eckart Marsch

  • 2018
  • Hannes Alfvén Medal

The 2018 Hannes Alfvén Medal is awarded to Eckart Marsch for fundamental contributions to our understanding of the kinetic processes and plasma turbulence in the heliosphere, as well as for work that helped HELIOS become a successful mission and initiated the Solar Orbiter.


Ilya G. Usoskin

Ilya G. Usoskin

  • 2018
  • Julius Bartels Medal

The 2018 Julius Bartels Medal is awarded to Ilya G. Usoskin for his key contributions to long-term changes of cosmic rays and solar activity, qualifying him as a founder of the space climate discipline.


Natasha L. S. Jeffrey

Natasha L. S. Jeffrey

  • 2018
  • Division Outstanding Early Career Scientists Award

The 2018 Division Outstanding Early Career Scientists Award is awarded to Natasha L. S. Jeffrey for her outstanding achievements in improving the standard model of fast electrons produced in solar flares, thereby eliminating the long-standing low-energy cut-off uncertainty.


Irina Zhelavskaya

Irina Zhelavskaya

  • 2018
  • Outstanding Student Poster and PICO (OSPP) Award

The 2018 Outstanding Student Poster and PICO (OSPP) Award is awarded to Irina Zhelavskaya Systematic analysis of machine learning techniques for Kp prediction in the framework of the H2020 project ‘SWAMI


Pauli Väisänen

Pauli Väisänen

  • 2018
  • Outstanding Student Poster and PICO (OSPP) Award

The 2018 Outstanding Student Poster and PICO (OSPP) Award is awarded to Pauli Väisänen Long-term evolution of the power-law spectrum of galactic cosmic rays in 1953-2016

Latest posts from the ST blog

New insights to the north-south asymmetries of auroral features

New insights to the north-south asymmetries of auroral features

Recent research on the simultaneous displays of aurora in both hemispheres have lead to new knowledge of how large-scale asymmetries in the global magnetic field configuration can arise and be mitigated. This new understanding is contrary to what has been the consensus in the field, and was recently highlighted in a press release from the American Geophysical Union, followed by attention from numerous newspapers and magazines world wide. These new results, published in a series of papers since 2015 [1,2,3,4,5,6], …


Web-based Tools for Forecasting Solar Particle Events and Flares

Web-based Tools for Forecasting Solar Particle Events and Flares

The presence of Solar Energetic Particles (SEPs) poses a serious health risk to humans in space, can result in increased radiation doses for high-latitude aircraft flights and constitutes a serious hazard for the micro-electronics and other hardware elements of satellites, aircraft and launchers. These groups of end users need reliable forecasts of possible enhancements in the radiation flux level, days beforehand, in order to plan flights, operations and EVAs (extra-vehicular activities). Enhancements of SEP fluxes result from explosive phenomena in …


FOXSI: The NASA mission that combines rockets, flares, and X-rays

FOXSI: The NASA mission that combines rockets, flares, and X-rays

For decades, high-energy aspects of the Sun have been studied using indirect imaging and spectroscopy in hard X-rays (HXR) by the pioneering RHESSI spacecraft. However, advanced understanding of small-scale energy releases and particle acceleration in the outermost layer of the Sun require better sensitivity and dynamic range, which can be achieved by using direct focusing X-ray optics. Almost six years ago, in 2012, the Focusing Optics X-ray Solar Imager (FOXSI) rocket experiment first imaged the Sun in hard X-rays (4 …

Current issue of the EGU newsletter

The deadline to nominate the best deserving researchers for the EGU 2020 awards and medals is this month, on the 15th of June. To increase diversity in the group of EGU awardees and medallists, we encourage the EGU membership to consider gender, geographical and cultural balance when nominating outstanding Earth, planetary and space scientists at various career stages. We also remind you that the EGU launched two exciting new awards this year, which we are also accepting nominations for: the Angela Croome Award for science journalists and Katia and Maurice Krafft Award for researchers for excellence in science outreach and engagement.

Another important date to keep in mind is 9 June, the deadline for submitting your feedback on the EGU General Assembly 2019. This is your chance to help us improve the 2020 meeting.

If you are looking to organise a geoscience school or conference, keep an eye on egu.eu next week as we’ll be launching our call for applications for financial support from the EGU to organise topical events.

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