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New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action

2016Journal article Open access
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dc.contributor.authorPassos, D.
dc.contributor.authorCharbonneau, P.
dc.contributor.authorMiesch, M. S.
dc.date.accessioned2017-04-07T15:57:33Z
dc.date.available2017-04-07T15:57:33Z
dc.date.issued2016
dc.description.abstractThe solar meridional circulation is a "slow", large scale flow that transports magnetic field and plasma throughout the convection zone in the (r, theta) plane and plays a crucial role in controlling the magnetic cycle solutions presented by flux transport dynamo models. Observations indicate that this flow speed varies in anti-phase with the solar cycle at the solar surface. A possible explanation for the source of this variation is based on the fact that inflows into active regions alter the global surface pattern of the meridional circulation. In this work we examine the meridional circulation profile that emerges from a 3D global simulation of the solar convection zone, and its associated dynamics. We find that at the bottom of the convection zone, in the region where the toroidal magnetic field accumulates, the meridional circulation is highly modulated through the action of a magnetic torques and thus provides evidence for a new mechanism to explain the observed cyclic variations.
dc.identifier.isbn978-1-58381-892-3
dc.identifier.urihttp://hdl.handle.net/10400.1/9744
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSCOSTEP, Variabil Sun & Its Terrestrial Impact; European Space Agcy; Fundacio Ciencia & Tecnologia; Univ Coimbra Reitoria; Univ Coimbra, Dept Matemat; Observat ParisSCOSTEP, Variabil Sun & Its Terrestrial Impact; European Space Agcy; Fundacio Ciencia & Tecnologia; Univ Coimbra Reitoria; Univ Coimbra, Dept Matemat; Observat Paris
dc.relation.isbasedonWOS:000378098700028
dc.titleNew insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceCoimbra,Portugal
oaire.citation.endPage184
oaire.citation.startPage179
oaire.citation.titleGround based solar observations in the space instrumentation era. Astronomical Society of the Pacific Conference Series 2016
oaire.citation.volume504
person.familyNamePassos
person.givenNameDário
person.identifier324764
person.identifier.ciencia-id3D13-C289-0595
person.identifier.orcid0000-0002-5345-5119
person.identifier.scopus-author-id21743737200
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication30c8500a-c12b-47c3-845e-9b64957cf233
relation.isAuthorOfPublication.latestForDiscovery30c8500a-c12b-47c3-845e-9b64957cf233

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