Temporal variations of the solar meridional flows from ring diagram analysis

Abstract

We use MDI data obtained over the past six years to determine changes in solar meridional flows with time. We have used ring diagram analysis to study the flows. We also study the North-South antisymmetric component of solar rotation. We find distinct solar activity related changes in the meridional flows, in particular, the anti-symmetric component of the meridional flow shows a decrease in speed with time.