The solar cycle is a manifestation of complex interactions between magnetic fields and plasma flows within the Sun, acting as the primary driver for magnetic variability and space weather conditions that govern the heliosphere. This interdisciplinary session, led by COFFIES, invites contributions that explore the coupling of the solar interior to the corona and heliosphere.

We seek abstracts utilizing state-of-the-art observations and advanced numerical modeling to track the evolution of the magnetic field from the convective zone to the corona and beyond. Key topics include:

• Advances in helioseismology and the characterization of internal flows and far-side active regions.
• Linking surface magnetic evolution to coronal structure and solar wind variability.
• Solar dynamo state estimation: Physical constraints and solar cycle predictions.

This session aims to foster a holistic understanding of the Sun and heliosphere as a single, coupled system, highlighting how interior dynamics dictate the long-term variability of our space environment.