Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-03-06
Astronomy and Astrophysics
Astrophysics
To be published in Solar Physcis Topical Issue "Helioseismology, Asteroseismology, and MHD Connections"
Scientific paper
10.1007/s11207-008-9162-3
We present independent observations of the solar-cycle variation of flows near the solar surface and at a depth of about 60 Mm, in the latitude range $\pm45^\circ$. We show that the time-varying components of the meridional flow at these two depths have opposite sign, while the time-varying components of the zonal flow are in phase. This is in agreement with previous results. We then investigate whether the observations are consistent with a theoretical model of solar-cycle dependent meridional circulation based on a flux-transport dynamo combined with a geostrophic flow caused by increased radiative loss in the active region belt (the only existing quantitative model). We find that the model and the data are in qualitative agreement, although the amplitude of the solar-cycle variation of the meridional flow at 60 Mm is underestimated by the model.
Gizon Laurent
Rempel Matthias
No associations
LandOfFree
Observation and Modeling of the Solar-Cycle Variation of the Meridional Flow does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation and Modeling of the Solar-Cycle Variation of the Meridional Flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation and Modeling of the Solar-Cycle Variation of the Meridional Flow will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-14527