New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/9744 |
Resumo: | The 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. |
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New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo actionThe 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.SCOSTEP, 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 ParisSapientiaPassos, D.Charbonneau, P.Miesch, M. S.2017-04-07T15:57:33Z20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/9744eng978-1-58381-892-3info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:21:16Zoai:sapientia.ualg.pt:10400.1/9744Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:01:36.533946Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
title |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
spellingShingle |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action Passos, D. |
title_short |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
title_full |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
title_fullStr |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
title_full_unstemmed |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
title_sort |
New insights about meridional circulation dynamics from 3D MHD global simulations of solar convection and dynamo action |
author |
Passos, D. |
author_facet |
Passos, D. Charbonneau, P. Miesch, M. S. |
author_role |
author |
author2 |
Charbonneau, P. Miesch, M. S. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Passos, D. Charbonneau, P. Miesch, M. S. |
description |
The 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. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016 2016-01-01T00:00:00Z 2017-04-07T15:57:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/9744 |
url |
http://hdl.handle.net/10400.1/9744 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
978-1-58381-892-3 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
SCOSTEP, 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 |
publisher.none.fl_str_mv |
SCOSTEP, 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.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133246256054272 |