SPEARHEAD Interim Report Meeting #2

SPEARHEAD Interim Report Meeting #2

The Horizon Europe project SPEARHEAD (SPEcification, Analysis & Re-calibration of High Energy pArticle Data) has successfully completed its second Interim Report Meeting (IRM2), marking another major milestone in the project’s lifecycle. Building on the strong...
A new catalogue of >100 MeV solar energetic proton events

A new catalogue of >100 MeV solar energetic proton events

Within the framework of the SPEARHEAD project, we present a new catalogue of high energy particles observed by SOHO/ERNE in the last three solar cycles (1996–2024), with protons of >100 MeV. The catalogue is based on a systematic identification of solar energetic...
High-Energy Particles in the Heliosphere

High-Energy Particles in the Heliosphere

In May 2025, the University of Turku hosted the intensive Master’s-level course High-energy Particles in the Heliosphere as part of the Horizon Europe SPEARHEAD project, bringing together students from across Europe both on-site and online. Over four weeks,...
GLE77 – The Solar Storm of November 11, 2025

GLE77 – The Solar Storm of November 11, 2025

On 11 November 2025, a powerful X5-class solar flare erupted from the Sun at 10:10 UTC, associated with a fast coronal mass ejection (CME) directed towards Earth. The event — designated Ground Level Enhancement 77 (GLE77) — was one of the strongest solar energetic...
SPEARHEAD at ESWW2025 – Umeå, Sweden

SPEARHEAD at ESWW2025 – Umeå, Sweden

The SPEARHEAD project made a strong presence at this year’s European Space Weather Week (ESWW2025) with multiple presentations and contributions highlighting our work. Our poster and oral presentations showcased progress in advancing data analysis tools and improving...