Venus's Southern Polar Vortex Reveals Precessing Circulation
International audience 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 In...
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ftsorbonneuniv:oai:HAL:hal-03785886v1 2024-10-13T14:10:48+00:00 Venus's Southern Polar Vortex Reveals Precessing Circulation Luz, David Berry, D. L. Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin F. Erard, Stéphane Nuccilli, Fabrizio Universidade de Lisboa = University of Lisbon = Université de Lisbonne (ULISBOA) Departamento de Física, Universidade de Évora Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF-Roma) Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Pôle Planétologie du LESIA Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Department of Physics Oxford University of Oxford Istituto di Fisica dello Spazio Interplanetario (IFSI) National Research Council of Italy 2011 https://hal.science/hal-03785886 https://doi.org/10.1126/science.1201629 en eng HAL CCSD American Association for the Advancement of Science (AAAS) info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1201629 BIBCODE: 2011Sci.332.577L doi:10.1126/science.1201629 ISSN: 0036-8075 EISSN: 1095-9203 Science https://hal.science/hal-03785886 Science, 2011, 332, pp.577-. ⟨10.1126/science.1201629⟩ [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2011 ftsorbonneuniv https://doi.org/10.1126/science.1201629 2024-09-29T23:54:56Z International audience 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 nonsymmetric and varying precession of the polar atmospheric circulation with respect to the planetary axis. Article in Journal/Newspaper South pole HAL Sorbonne Université North Pole South Pole Venus ENVELOPE(-57.842,-57.842,-61.925,-61.925) Science 332 6029 577 580 |
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HAL Sorbonne Université |
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ftsorbonneuniv |
language |
English |
topic |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Luz, David Berry, D. L. Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin F. Erard, Stéphane Nuccilli, Fabrizio Venus's Southern Polar Vortex Reveals Precessing Circulation |
topic_facet |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience 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 nonsymmetric and varying precession of the polar atmospheric circulation with respect to the planetary axis. |
author2 |
Universidade de Lisboa = University of Lisbon = Université de Lisbonne (ULISBOA) Departamento de Física, Universidade de Évora Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF-Roma) Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Pôle Planétologie du LESIA Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Department of Physics Oxford University of Oxford Istituto di Fisica dello Spazio Interplanetario (IFSI) National Research Council of Italy |
format |
Article in Journal/Newspaper |
author |
Luz, David Berry, D. L. Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin F. Erard, Stéphane Nuccilli, Fabrizio |
author_facet |
Luz, David Berry, D. L. Piccioni, Giuseppe Drossart, Pierre Politi, Romolo Wilson, Colin F. Erard, Stéphane Nuccilli, Fabrizio |
author_sort |
Luz, David |
title |
Venus's Southern Polar Vortex Reveals Precessing Circulation |
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 |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-03785886 https://doi.org/10.1126/science.1201629 |
long_lat |
ENVELOPE(-57.842,-57.842,-61.925,-61.925) |
geographic |
North Pole South Pole Venus |
geographic_facet |
North Pole South Pole Venus |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0036-8075 EISSN: 1095-9203 Science https://hal.science/hal-03785886 Science, 2011, 332, pp.577-. ⟨10.1126/science.1201629⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1201629 BIBCODE: 2011Sci.332.577L doi:10.1126/science.1201629 |
op_doi |
https://doi.org/10.1126/science.1201629 |
container_title |
Science |
container_volume |
332 |
container_issue |
6029 |
container_start_page |
577 |
op_container_end_page |
580 |
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1812818322221170688 |