On 22 August 1996, the EISCAT Svalbard Radar (ESR) was officially inaugurated, marking a significant milestone in the history of atmospheric and space science research. Located in Longyearbyen, Svalbard, the ESR was designed to complement the existing EISCAT radar systems in mainland Scandinavia, extending their observational capabilities into the polar cap region. The decision to develop the ESR was made by the EISCAT Council in 1990, and feasibility studies began shortly thereafter, culminating in the start of construction at the end of 1992 under the leadership of Director Jürgen Röttger.

A Valuable Addition to EISCAT

The ESR brought unique capabilities to the EISCAT Scientific Association. As the first incoherent scatter radar system operating at such high latitudes, it enabled scientists to study the Earth’s upper atmosphere and ionosphere in unprecedented detail. Its strategic location in the Arctic allowed for continuous observations of the auroral zone and polar cap, regions critical for understanding space weather and its impact on our planet.

Over the past three decades, the ESR has played a pivotal role in numerous groundbreaking discoveries. It has contributed to our understanding of atmospheric dynamics, ionospheric plasma physics, and the interactions between the Earth’s atmosphere and the solar wind. The radar’s ability to operate in both common and field-aligned modes has made it an indispensable tool for researchers worldwide.

Concrete Contributions to Popular Science

ESR has been instrumental in improving space weather forecasting. By monitoring the ionosphere and tracking disturbances caused by solar activity, the radar provides critical data that helps predict space weather events. These events can affect satellite operations, communication systems, and even power grids on Earth, making the ESR’s contributions vital for both scientific and practical applications.

Continued Importance

Today, the EISCAT Svalbard Radar remains at the forefront of atmospheric and space science. Its data continues to inform and inspire new generations of scientists, ensuring that EISCAT maintains its position as a leader in the field. The ESR’s contributions have been instrumental in advancing our knowledge of the near-Earth space environment, supporting both fundamental research and practical applications, such as improving the accuracy of space weather forecasts.

Looking Ahead

EISCAT is a state-owned company owned by Sweden, Norway and Finland, with member institutions in several countries. The organisation’s radar stations are strategically located to study the atmosphere and ionosphere over the Arctic and play a key role in understanding space weather and its impact on modern technology.

The 22nd International EISCAT Symposium will be held on 24–28 August 2026 at the Space Campus in Kiruna. The symposium brings together leading researchers in atmospheric and space science to present and discuss the latest research on space weather, the atmosphere and the ionosphere. The event is jointly organised by EISCAT and the Swedish Institute of Space Physics (IRF).

50 years of data for research into various space phenomena

EISCAT was founded in December 1975 and, over the course of five decades, has contributed to groundbreaking research into near-Earth space and its impact on society.

In 2003, a powerful geomagnetic storm, or solar storm, occurred: the Halloween storm. The intense solar activity caused disruptions to the Swedish electricity grid and led to widespread power cuts in the Malmö region. Around 50,000 households were affected, fire alarms were triggered, train services were delayed and the emergency services had to be called out to rescue people trapped in lifts.

Research into the ionosphere, the atmosphere and space weather over the Arctic helps scientists to understand, predict and reduce the risks of similar disruptions to future electricity grids, satellite systems and communications. EISCAT’s data contributes to the development of better models and warning systems, making society better equipped to deal with similar events in the future – as was also demonstrated during the major solar storm of 2024, when spectacular northern lights could be seen across the whole of Sweden. On that occasion, there were no power cuts, but several electricity network operators and authorities went on high alert, and air traffic, satellites and navigation systems were monitored with particular care. These threats remain highly relevant today, but thanks to the research that EISCAT can contribute to, we are better equipped to deal with them.

Anniversary programme and the Beynon Medal

The symposium begins on Monday 24 August. On Wednesday, EISCAT’s 50th anniversary will be marked with a special programme on the organisation’s history and the presentation of the Beynon Medal, which is awarded to individuals who have made particularly significant contributions to EISCAT’s activities and development.

The symposium concludes on Friday 28 August.

What is EISCAT?

EISCAT’s mission is to provide research radar facilities for the study of the lower, middle and upper atmosphere, as well as the ionosphere, using incoherent scatter radar technology, the most powerful ground-based method for this research.

The organisation operates several high-performance radar stations in Northern Scandinavia and on Svalbard. In addition, construction is underway on EISCAT_3D, a new generation multistatic radar with antenna arrays in northern Finland, Norway and Sweden, the most advanced incoherent scatter radar in the world.

About EISCAT

EISCAT is a state-owned company owned by Sweden, Norway and Finland, with member institutions in several countries. The organisation’s radar stations are strategically located to study the atmosphere and ionosphere over the Arctic and play a key role in understanding space weather and its impact on modern technology.

Download the full press release below.

file_copy pdf, 2 MB arrow_right_alt Download Press release EISCAT Symposium 2026

The 22nd International EISCAT Symposium 2026 brings together world-leading researchers in Kiruna 24-28 August. The week will contain presentations and discussions on different subjects related to EISCAT operations, such as space weather, radar techniques, space debris, aurora studies etc.

Media contact

For interviews, photos or further information, please contact:

EISCAT has recently made a big IT migration where the e-mail server was changed. This may cause problems with sending e-mails to us sometimes. This should not affect direct messages, but can affect lists och service addresses.

If you have a bouncing e-mail, please use the contact form on this website instead: Contact EISCAT

International EISCAT Radar School
When: 17th – 21st August 2026
Where: Kilpisjärvi, Finland

The International EISCAT Radar School is a training course for new users of incoherent scatter radars at any stage of their research career. Participants should have a background in space physics, ionospheric pysics, plasma physics, or radar (radio science). The school will cover all essential aspects of the current incoherent scatter radar systems, including the science programme. An overview of the existing hardware and software was provided and future plans will be discussed, with an emphasis on phased array radars in preparation of EISCAT_3D.

The course will have a very strong emphasis on practicals, i.e. work in groups of participants on real data. There will be dedicated radar experiments for every group, and the groups will analyse their data and present their results under the guidance of an experienced team of instructors.

The radar school is organised by the Sodankylä Geophysical Observatory, the Space Physics and Astronomy Research Group (both University of Oulu), and EISCAT AB.

The radar school is part of the University of Arctic Thematic Network Arctic Space Hub.

The 22nd International EISCAT Symposium and the 49th Annual European Meeting on Atmospheric Studies by Optical Methods will take place after the Radar School, (more information here).

Registration

Please visit the registration page for more information.

arrow_right_alt Registration

Organisers:

Antti Kero
Sodankylä Geophysical Observatory

Thomas Ulich
EISCAT AB

The 21st EISCAT_3D user meeting will take place hybrid at IRF in Uppsala and Online
When: May 19-20, 2026.

arrow_right_alt More information and registration:

Preliminary subjects of presentations/discussions are:

• E3D data analyisis
• a new GUISDAP and other tools
•  Common Programmes
•  Visualization

And more depending on your input and contributions.

We look forward to welcoming you to an interesting and rewarding meeting,
Stephan Buchert and Thomas Ulich

Old information video about EISCAT_3D and the importance of learning more about the interactions between the sun and the Earth.

First published in 2011.

With tens of thousands of satellites and millions of fragments in orbit, monitoring space debris is becoming increasingly important. Even small debris can interfere with scientific measurements, including studies of the aurora borealis and the ionosphere. EISCAT_3D will be able to detect debris down to a few centimetres and determine trajectories from a single observation, significantly enhancing EISCAT’s capabilities in space situational awareness.

The project, led by Johan Kero and Daniel Kastinen at IRF, strengthens EISCAT’s role as a key European research infrastructure. It not only expands the radar’s scientific applications but also supports international collaborations such as EU SST and the development of future radar systems like NOSTRA.

EISCAT releases a new version of GUISDAP.

GUISDAP is the main analysis package for the ionospheric EISCAT data, but parts can also be used for other types of analysis. It also contain extra tools like visualisation, calibration and vector calculation. With this version, support for phased array radar data, docker and packaging are introduced.

Please read the release notes for details.

22nd International EISCAT Symposium 2025 & 49th Annual European Meeting on Atmospheric Studies by Optical Methods

The Symposium is moved to 22-24 August 2026. Read more here: EISCAT Symposium 2026

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The 22nd International EISCAT Symposium will occur the 18th – 22nd August 2025 in Kiruna, Sweden. The symposium will be joint twith the 49th Annual European Meeting on Atmoshperic Studies by Optical Methods.

The meeting will be hosted jointly by EISCAT AB and the Swedish Institute for Space Physics (IRF) at the Kiruna Space Campus.

More information on this page: https://eiscat.se/eiscat-symposium-2025/