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South-polar features on Venus similar to those near the north pole

Piccioni, G. and Drossart, P. and Sanchez-Lavega, A. and Hueso, R. and Taylor, F.W. and Grassi, D. and Zasova, L. and Moriconi, M. and Adriani, A. and Lebonnois, S. and Coradini, A. and Bezard, B. and Angrilli, F. and Arnold, G. and Baines, K.H. and Bellucci, G. and Benkhoff, J. and Bibring, J.P. and Blanco, A. and Blecka, M. I. and Carlson, R. W. and Di Lellis, A. and Encrenaz, T. and Erard, S. and Fonti, S. and Formisano, V. and Fouchet, T. and Garcia, R. and Haus, R. and Helbert, J. and Ignatiev, N. I. and Irwin, P.G.J. and Langevin, Y. and Lopez-Valverde, M.A. and Luz, D. and Marinangeli, L. and Orofino, V. and Rodin, A.V. and Roos-Serote, M.C. and Saggin, B. and Stam, D.M. and Titov, D. and Visconti, G. and Zambelli, M. and et.al., (2007) South-polar features on Venus similar to those near the north pole. Nature (450), pp. 637-640. DOI: 10.1038/nature06209

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Abstract

Venus has no seasons, slow rotation and a very massive atmosphere, which is mainly carbon dioxide with clouds primarily of sulphuric acid droplets. Infrared observations by previous missions to Venus revealed a bright 'dipole' feature surrounded by a cold 'collar' at its north pole1, 2, 3, 4. The polar dipole is a 'double-eye' feature at the centre of a vast vortex that rotates around the pole, and is possibly associated with rapid downwelling. The polar cold collar is a wide, shallow river of cold air that circulates around the polar vortex. One outstanding question has been whether the global circulation was symmetric, such that a dipole feature existed at the south pole. Here we report observations of Venus' south-polar region, where we have seen clouds with morphology much like those around the north pole, but rotating somewhat faster than the northern dipole. The vortex may extend down to the lower cloud layers that lie at about 50 km height and perhaps deeper. The spectroscopic properties of the clouds around the south pole are compatible with a sulphuric acid composition.

Item URL in elib:https://elib.dlr.de/52065/
Document Type:Article
Title:South-polar features on Venus similar to those near the north pole
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Piccioni, G.INAF-IASFUNSPECIFIED
Drossart, P.LESIAUNSPECIFIED
Sanchez-Lavega, A.Universidad del Pais Vasco AldaUNSPECIFIED
Hueso, R.Universidad del Pais Vasco AldaUNSPECIFIED
Taylor, F.W.University of OxfordUNSPECIFIED
Grassi, D.LESIAUNSPECIFIED
Zasova, L.IKIUNSPECIFIED
Moriconi, M.CNR-ISACUNSPECIFIED
Adriani, A.INAF-IFSIUNSPECIFIED
Lebonnois, S.Laboratoire de Meteorologie DynamiqueUNSPECIFIED
Coradini, A.INAF-IFSIUNSPECIFIED
Bezard, B.LESIAUNSPECIFIED
Angrilli, F.CISASUNSPECIFIED
Arnold, G.UNSPECIFIEDUNSPECIFIED
Baines, K.H.Jet Propulsion LboratoryUNSPECIFIED
Bellucci, G.INAF-IFSIUNSPECIFIED
Benkhoff, J.UNSPECIFIEDUNSPECIFIED
Bibring, J.P.Universite Paris-SudUNSPECIFIED
Blanco, A.Universita degli Studi di LecceUNSPECIFIED
Blecka, M. I.Space Research Centre of Polish Academy of ScienceUNSPECIFIED
Carlson, R. W.Jet Propulsion LaboratoryUNSPECIFIED
Di Lellis, A.AMDLSPACE s.r.l.UNSPECIFIED
Encrenaz, T.LESIAUNSPECIFIED
Erard, S.LESIAUNSPECIFIED
Fonti, S.Universita degli Studi di LecceUNSPECIFIED
Formisano, V.INAF-IFSIUNSPECIFIED
Fouchet, T.LESIAUNSPECIFIED
Garcia, R.Institute de Physique du Globe de ParisUNSPECIFIED
Haus, R.UNSPECIFIEDUNSPECIFIED
Helbert, J.UNSPECIFIEDUNSPECIFIED
Ignatiev, N. I.IKIUNSPECIFIED
Irwin, P.G.J.University of OxfordUNSPECIFIED
Langevin, Y.Institut d`Astrophysique SpatialeUNSPECIFIED
Lopez-Valverde, M.A.CSICUNSPECIFIED
Luz, D.Observatorio Astronomico de LisboaUNSPECIFIED
Marinangeli, L.Universita d`AnnunzioUNSPECIFIED
Orofino, V.Universita degli Studi di LecceUNSPECIFIED
Rodin, A.V.IKIUNSPECIFIED
Roos-Serote, M.C.Observatorio Astronomico de LisboaUNSPECIFIED
Saggin, B.Politecnico di MilanoUNSPECIFIED
Stam, D.M.University of AmsterdamUNSPECIFIED
Titov, D.Max-Planck-Inst. for AeronomyUNSPECIFIED
Visconti, G.Universita de L'AquilaUNSPECIFIED
Zambelli, M.INAF-IASFUNSPECIFIED
et.al., UNSPECIFIEDUNSPECIFIED
Date:2007
Journal or Publication Title:Nature
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
DOI :10.1038/nature06209
Page Range:pp. 637-640
Editors:
EditorsEmail
Macmilan Publisher Ltd., UNSPECIFIED
Series Name:Letter of Nature
Status:Published
Keywords:Venus
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Berlin-Adlershof
Institutes and Institutions:Remote Sensing Technology Institute > Marine Remote Sensing
Deposited By:INVALID USER
Deposited On:13 Dec 2007
Last Modified:15 Jan 2010 01:59

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