Flux-transport and mean-field dynamo theories of solar cycles

@article{Choudhuri2012FluxtransportAM,
  title={Flux-transport and mean-field dynamo theories of solar cycles},
  author={Arnab Rai Choudhuri},
  journal={Proceedings of the International Astronomical Union},
  year={2012},
  volume={8},
  pages={37 - 47}
}
  • A. Choudhuri
  • Published 1 August 2012
  • Physics
  • Proceedings of the International Astronomical Union
Abstract We point out the difficulties in carrying out direct numerical simulation of the solar dynamo problem and argue that kinematic mean-field models are our best theoretical tools at present for explaining various aspects of the solar cycle in detail. The most promising kinematic mean-field model is the flux transport dynamo model, in which the toroidal field is produced by differential rotation in the tachocline, the poloidal field is produced by the Babcock–Leighton mechanism at the… 
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References

SHOWING 1-10 OF 41 REFERENCES
A new solar cycle model including meridional circulation
A kinematic model is presented for the solar cycle which includes not only the transport of magnetic flux by supergranular diffusion and a poleward bulk flow at the sun's surface, but also the
Exploring the Physical Basis of Solar Cycle Predictions: Flux Transport Dynamics and Persistence of Memory in Advection- versus Diffusion-dominated Solar Convection Zones
The predictability, or lack thereof, of the solar cycle is governed by numerous separate physical processes that act in unison in the interior of the Sun. Magnetic flux transport and the finite time
Quenching of Meridional Circulation in Flux Transport Dynamo Models
Guided by the recent observational result that the meridional circulation of the Sun becomes weaker at the time of the sunspot maximum, we have included a parametric quenching of the meridional
Solar Parity Issue with Flux-transport Dynamo
We investigated the dependence of the solar magnetic parity between the hemispheres on two important parameters, the turbulent diffusivity and the meridional flow, by means of axisymmetric kinematic
Solar activity forecast with a dynamo model
Although systematic measurements of the Sun’s polar magnetic field exist only from mid-1970s, other proxies can be used to infer the polar field at earlier times. The observational data indicate a
IMPORTANCE OF MERIDIONAL CIRCULATION IN FLUX TRANSPORT DYNAMO: THE POSSIBILITY OF A MAUNDER-LIKE GRAND MINIMUM
Meridional circulation is an important ingredient in flux transport dynamo models. We have studied its importance on the period, the amplitude of the solar cycle, and also in producing Maunder-like
The Waldmeier effect and the flux transport solar dynamo
We confirm that the evidence for the Waldmeier effect WE1 (the anticorrelation between rise times of sunspot cycles and their strengths) and the related effect WE2 (the correlation between rise rates
Stochastic Fluctuations in a Babcock-Leighton Model of the Solar Cycle
We investigate the effect of stochastic fluctuations on a flux transport model of the solar cycle based on the Babcock-Leighton mechanism. Specifically, we make use of our recent flux transport model
Simulating and Predicting Solar Cycles Using a Flux-Transport Dynamo
We construct a predictive tool based on a Babcock-Leighton-type flux-transport dynamo model of a solar cycle, run the model by updating the surface magnetic source using old cycles' data since cycle
ON THE AMPLITUDE OF CONVECTIVE VELOCITIES IN THE DEEP SOLAR INTERIOR
We obtain lower limits on the amplitude of convective velocities in the deep solar convection zone (CZ) based only on the observed properties of the differential rotation and meridional circulation
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