A comparative analysis of 2D surface flux transport and 3D dynamo models yields a mode-dependent radial decay spectrum with effective timescales τ≈2 yr (l=8) for magnetogram assimilation and τ≈7 yr (dipole) for active-region-driven simulations.
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Constraining the radial decay timescale of solar surface magnetic field through a comparative study of data-assimilative 2D surface flux transport and 3D dynamo models
A comparative analysis of 2D surface flux transport and 3D dynamo models yields a mode-dependent radial decay spectrum with effective timescales τ≈2 yr (l=8) for magnetogram assimilation and τ≈7 yr (dipole) for active-region-driven simulations.