Venus's southern polar vortex reveals precessing circulation
| Autor: | David Luz, D. L. Berry, Giuseppe Piccioni, Pierre Drossart, Colin Wilson, F. Nuccilli, Romolo Politi, Stéphane Erard |
|---|---|
| Přispěvatelé: | Centro de Astronomia e Astrofísica da Universidade de Lisboa, Observatório Astronómico de Lisboa (CAAUL), 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, University of Oxford, Istituto di Fisica dello Spazio Interplanetario (IFSI), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Multidisciplinary
biology Atmospheric circulation Atmosphere Astronomy Venus biology.organism_classification Astrobiology Vortex Latitude Polar wind Polar vortex Planet Physics::Space Physics Precession Astrophysics::Earth and Planetary Astrophysics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Geology Astrophysics::Galaxy Astrophysics Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Science Science, 2011, 332, pp.577-. ⟨10.1126/science.1201629⟩ |
| ISSN: | 1095-9203 0036-8075 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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