Venus’s Southern Polar Vortex Reveals Precessing Circulation
Autor(a) principal: | |
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Data de Publicação: | 2011 |
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/10174/4178 |
Resumo: | Initial images of Venus’s south pole by the Venus Express mission have shown the presence of a bright, highly variable vortex, similar to that at the planet’s north pole. Using high-resolution infrared measurements of polar winds from the Venus Express Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) instrument, we show the vortex to have a constantly varying internal structure, with a center of rotation displaced from the geographic south pole by ~3 degrees of latitude and that drifts around the pole with a period of 5 to 10 Earth days. This is indicative of a non symmetric and varying precession of the polar atmospheric circulation with respect to the planetary axis. |
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Venus’s Southern Polar Vortex Reveals Precessing CirculationVenusAtmosphereVortexInitial images of Venus’s south pole by the Venus Express mission have shown the presence of a bright, highly variable vortex, similar to that at the planet’s north pole. Using high-resolution infrared measurements of polar winds from the Venus Express Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) instrument, we show the vortex to have a constantly varying internal structure, with a center of rotation displaced from the geographic south pole by ~3 degrees of latitude and that drifts around the pole with a period of 5 to 10 Earth days. This is indicative of a non symmetric and varying precession of the polar atmospheric circulation with respect to the planetary axis.Science2012-01-25T16:48:34Z2012-01-252011-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/4178http://hdl.handle.net/10174/4178engScience, 332, 577-580, 2011577-580332Sciencedluz@oal.ul.ptdberry@uevora.ptgiuseppe.piccioni@iasf-roma.inaf.itPiepierre.drossart@obspm.frromolo.politi@iasf-roma.inaf.itwilson@atm.ox.ac.ukstephane.erard@obspm.frFabrizio.Nuccilli@ifsi-roma.inaf.itVenus’s Southern Polar Vortex Reveals Precessing Circulation243Luz, DavidBerry, DavidPiccioni, GiuseppeDrossart, PierrePoliti, RomoloWilson, ColinErard, StéphaneNuccilli, Fabrizioinfo: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:RCAAP2024-01-03T18:41:38Zoai:dspace.uevora.pt:10174/4178Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:59:22.481391Repositório 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 |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
title |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
spellingShingle |
Venus’s Southern Polar Vortex Reveals Precessing Circulation Luz, David Venus Atmosphere Vortex |
title_short |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
title_full |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
title_fullStr |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
title_full_unstemmed |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
title_sort |
Venus’s Southern Polar Vortex Reveals Precessing Circulation |
author |
Luz, David |
author_facet |
Luz, David Berry, David Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin Erard, Stéphane Nuccilli, Fabrizio |
author_role |
author |
author2 |
Berry, David Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin Erard, Stéphane Nuccilli, Fabrizio |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Luz, David Berry, David Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin Erard, Stéphane Nuccilli, Fabrizio |
dc.subject.por.fl_str_mv |
Venus Atmosphere Vortex |
topic |
Venus Atmosphere Vortex |
description |
Initial images of Venus’s south pole by the Venus Express mission have shown the presence of a bright, highly variable vortex, similar to that at the planet’s north pole. Using high-resolution infrared measurements of polar winds from the Venus Express Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) instrument, we show the vortex to have a constantly varying internal structure, with a center of rotation displaced from the geographic south pole by ~3 degrees of latitude and that drifts around the pole with a period of 5 to 10 Earth days. This is indicative of a non symmetric and varying precession of the polar atmospheric circulation with respect to the planetary axis. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-04-01T00:00:00Z 2012-01-25T16:48:34Z 2012-01-25 |
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/10174/4178 http://hdl.handle.net/10174/4178 |
url |
http://hdl.handle.net/10174/4178 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Science, 332, 577-580, 2011 577-580 332 Science dluz@oal.ul.pt dberry@uevora.pt giuseppe.piccioni@iasf-roma.inaf.it Piepierre.drossart@obspm.fr romolo.politi@iasf-roma.inaf.it wilson@atm.ox.ac.uk stephane.erard@obspm.fr Fabrizio.Nuccilli@ifsi-roma.inaf.it Venus’s Southern Polar Vortex Reveals Precessing Circulation 243 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Science |
publisher.none.fl_str_mv |
Science |
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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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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