Explaining the variation of the meridional circulation with the solar cycle
arXiv:1809.06600 · doi:10.1017/S1743921318001357
Abstract
The meridional circulation of the Sun is observationally found to vary with the solar cycle, becoming slower during the solar maxima. We explain this by constructing a theoretical model in which the equation of the meridional circulation (the $Ï$ component of the vorticity equation) is coupled with the equations of the flux transport dynamo model. We find that the Lorentz force of the dynamo-generated magnetic fields can slow down the \MC\ during the solar maxima in broad conformity with the observations.
4 pages, 2 figures, to appear in the Proceedings of IAU Symposium No. 340, 2018