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SOFIA: Intelligent analysis of solar activity for space weather forecasting

Project description

Machine learning for enhanced solar activity predictions

Space weather refers to changes in the near-Earth environment caused by the Sun, which can disrupt satellites, navigation, aviation and power grids. Accurate forecasting is crucial for protecting infrastructure, but current methods often fall short. Supported by the Marie Skłodowska-Curie Actions programme, the SOFIA project will improve solar activity predictions using advanced machine learning, particularly variational autoencoders (VAEs). These models will create structured representations of solar active regions from NASA’s Solar Dynamics Observatory, linking magnetic features to solar eruptions. Additionally, sequential models will improve interpretability and track changes over time. The project will also analyse full-disk solar observations to integrate local and global factors affecting solar variability.

Objective

Space weather describes variable conditions in the near-Earth environment that can disrupt satellites, navigation and communication systems, aviation, and power grids, with cascading consequences for modern technologically-dependent society. The Sun is the primary driver of these disturbances, releasing bursts of radiation, energetic particles, and plasma through solar flares and coronal mass ejections. Reliable forecasts of such events are therefore critical to strengthen early-warning systems and safeguard European infrastructure, yet current approaches lack consistent parameters that capture how solar activity emerges and evolves across scales. This project integrates advanced machine learning methods to improve the description and prediction of solar activity. A central innovation is the extensive use of Variational Autoencoders (VAEs) for explainable ML-based parametrization of complex solar processes. First, VAEs will generate structured latent representations of solar active regions from multi-wavelength observations provided by NASA’s Solar Dynamics Observatory, delivering physically meaningful parameters that link magnetic morphology to the occurrence of eruptions. Weakly supervised and sequential models will then enhance interpretability and capture temporal evolution, while extensions to full-disk solar observations will integrate local and global drivers of solar variability. Finally, these data-driven representations will be coupled with geophysical models of the near-Earth environment, connecting solar drivers to response in interplanetary space and Earth’s atmosphere. By uniting physics-based and data-driven approaches, this work will lay the foundation for more accurate, reliable, and actionable space weather forecasts, strengthening resilience against solar-driven hazards.

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

GFZ HELMHOLTZ-ZENTRUM FUR GEOFORSCHUNG
Net EU contribution
€ 202 125,12
Address
TELEGRAFENBERG
14473 POTSDAM
Germany
Region
Brandenburg Brandenburg Potsdam
Activity type
Research Organisations
Links
Total cost
No data