Time-varying component of the solar meridional flow

Laurent Gizon, Matthias Rempel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present helioseismic observations of the solar-cycle variation of flows near the solar surface and at a depth of about 60 Mm, in the latitude range ±45°. 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. We investigate a theoretical model based on a flux-transport dynamo combined with a geostrophic flow caused by increased radiative loss in the active region belt. The model and the data are in qualitative agreement, although the amplitude of the solar-cycle variation of the meridional flow at 60 Mm appears to be underestimated by the model.

Original languageEnglish (US)
Title of host publicationSOHO 18/GONG 2006/HELAS I Beyond the spherical Sun
Volume624 SP
StatePublished - Oct 1 2006
EventSOHO 18/GONG 2006/HELAS I Beyond the spherical Sun - Sheffield, United Kingdom
Duration: Aug 7 2006Aug 11 2006

Other

OtherSOHO 18/GONG 2006/HELAS I Beyond the spherical Sun
CountryUnited Kingdom
CitySheffield
Period8/7/068/11/06

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ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Gizon, L., & Rempel, M. (2006). Time-varying component of the solar meridional flow. In SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun (Vol. 624 SP)

Time-varying component of the solar meridional flow. / Gizon, Laurent; Rempel, Matthias.

SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun. Vol. 624 SP 2006.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gizon, L & Rempel, M 2006, Time-varying component of the solar meridional flow. in SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun. vol. 624 SP, SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun, Sheffield, United Kingdom, 8/7/06.
Gizon L, Rempel M. Time-varying component of the solar meridional flow. In SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun. Vol. 624 SP. 2006
Gizon, Laurent ; Rempel, Matthias. / Time-varying component of the solar meridional flow. SOHO 18/GONG 2006/HELAS I Beyond the spherical Sun. Vol. 624 SP 2006.
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