Tag Archives: flux-transport model

227. Diverging subsurface flows beneath active regions dominate magnetic flux transport on the Sun

Contributed by S.P. Rajaguru. Posted on May 29, 2026

Using 14 years of helioseismic and magnetic-field observations, this study shows that deeper subsurface outflows from active regions play an important role in transporting magnetic fluxes to the polar regions and regulating polar-field formation.

204. Exploring Meridional Flow in the Solar Polar Caps

Contributed by Shuhong Yang. Posted on October 14, 2024

A surface flux transport model, using HMI-observed global magnetic field and active regions as inputs, with different polar meridional-flow profiles simulates the magnetic field in the polar caps. The simulation is then compared with Hinode-observed polar magnetic fields. The result supports an existence of counter cells above 70-degree latitude in each hemisphere.