Effects of cyclic fluctuations in meridional circulation using a low order dynamo model

Abstract

We develop and subsequently explore the solution space of a simple flux transport dynamo model that incorporates a time dependent large scale meridional circulation. Based on recent observations we prescribed an analytical form for the amplitude of this circulation and study its impact in the evolution of the magnetic field. We find that cyclic variations in the amplitude and frequency of the meridional flow affect the strength of the solar cycle. Variations in the amplitude of the fluctuations influence the shape of the solar cycle but are only relevant to the cycle's strength variations when they occur at a frequency different from or out of phase of the solar cycle's.

5 pages, 4 figures. Accepted for publication in MNRAS, February 2012

References in corpus (7)

• Predicting solar cycle 24 with a solar dynamo model
• Flux-transport dynamos with Lorentz force feedback on differential rotation and meridional flow: Saturation mechanism and torsional oscillations
• The unusual minimum of sunspot cycle 23 a consequence of Sun's meridional plasma flow variations
• Importance of Meridional Circulation in Flux Transport Dynamo: The Possibility of a Maunder-like Grand Minimum
• Solar parity issue with flux-transport dynamo
• Helioseismic data inclusion in solar dynamo models
• Grand Minima Under the Light of a Low Order Dynamo Model

Cited by in corpus (3)

• Studies of grand minima in sunspot cycles from a flux transport solar dynamo model
• Correlation between Decay Rate and Amplitude of Solar Cycles as Revealed from Observations and Dynamo Theory
• A study of the electrostatic properties of the interiors of low-mass stars: Possible implications for the observed rotational properties