Venus's major cloud feature as an equatorially trapped wave distorted by the wind

The superrotation of the atmospheres of slowly rotating bodies is a long-standing problem yet unsolved in atmospheric dynamics. On Venus, the most extreme case known of superrotation, this is accompanied and influenced by a recurrent planetary-scale cloud structure, known as the Y feature. So far, n...

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Detalles Bibliográficos
Autores: Peralta, Javier, Sánchez-Lavega, A., López-Valverde, M. A., Luz, D., Machado, P.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/400477
Acceso en línea:http://hdl.handle.net/10261/400477
Access Level:acceso abierto
Palabra clave:Venus
Waves
Clouds
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spelling Venus's major cloud feature as an equatorially trapped wave distorted by the windPeralta, JavierSánchez-Lavega, A.López-Valverde, M. A.Luz, D.Machado, P.VenusWavesCloudsThe superrotation of the atmospheres of slowly rotating bodies is a long-standing problem yet unsolved in atmospheric dynamics. On Venus, the most extreme case known of superrotation, this is accompanied and influenced by a recurrent planetary-scale cloud structure, known as the Y feature. So far, no model has simultaneously reproduced its shape, temporal evolution, related wind field, nor the relation between its dynamics and the unknown UV-absorbing aerosol that produces its dark morphology. In this paper we present an analytical model for a Kelvin-like wave that offers an explanation of these peculiarities. Under Venus cyclostrophic conditions, this wave is equatorially and vertically trapped where zonal winds peak and extends 7 km in altitude, and its vertical wind perturbations are shown to produce upwelling of the UV absorber. The Y-feature morphology and its 30 day evolution are reproduced as distortions of the wave structure by the Venus winds. ©2015. American Geophysical Union. All Rights Reserved.J. Peralta acknowledges the Spanish MICINN for funding support through the CONSOLIDER program “ASTROMOL” CSD2009-00038 and also funding through project AYA2011-23552. A.S.-L. was supported by the Spanish MICIIN project AYA2012-36666 with FEDER support, Grupos Gobierno Vasco IT765-13 and UPV/EHU UFI11/55. P.M. acknowledges the support from Observatoire de Paris-LESIA and the Portuguese Foundation for Science and Technology (FCT, PhD grant reference: SFRH/BD/66473/2009). D.L. and P.M. acknowledge FCT funding through project grants POCI/CTE-AST/110702/2009, PEst-OE/FIS/UI2751/2014, and EC project EuroVenus. Anonymous reviewers are thanked for their fruitful corrections which allowed to greatly improve this paper.Peer reviewedAmerican Geophysical UnionMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/400477reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//CSD2009-00038info:eu-repo/grantAgreement/MICINN//AYA2011-23552info:eu-repo/grantAgreement/MINECO//AYA2012-36666http://dx.doi.org/10.1002/2014GL062280Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4004772026-05-22T06:33:51Z
dc.title.none.fl_str_mv Venus's major cloud feature as an equatorially trapped wave distorted by the wind
title Venus's major cloud feature as an equatorially trapped wave distorted by the wind
spellingShingle Venus's major cloud feature as an equatorially trapped wave distorted by the wind
Peralta, Javier
Venus
Waves
Clouds
title_short Venus's major cloud feature as an equatorially trapped wave distorted by the wind
title_full Venus's major cloud feature as an equatorially trapped wave distorted by the wind
title_fullStr Venus's major cloud feature as an equatorially trapped wave distorted by the wind
title_full_unstemmed Venus's major cloud feature as an equatorially trapped wave distorted by the wind
title_sort Venus's major cloud feature as an equatorially trapped wave distorted by the wind
dc.creator.none.fl_str_mv Peralta, Javier
Sánchez-Lavega, A.
López-Valverde, M. A.
Luz, D.
Machado, P.
author Peralta, Javier
author_facet Peralta, Javier
Sánchez-Lavega, A.
López-Valverde, M. A.
Luz, D.
Machado, P.
author_role author
author2 Sánchez-Lavega, A.
López-Valverde, M. A.
Luz, D.
Machado, P.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Venus
Waves
Clouds
topic Venus
Waves
Clouds
description The superrotation of the atmospheres of slowly rotating bodies is a long-standing problem yet unsolved in atmospheric dynamics. On Venus, the most extreme case known of superrotation, this is accompanied and influenced by a recurrent planetary-scale cloud structure, known as the Y feature. So far, no model has simultaneously reproduced its shape, temporal evolution, related wind field, nor the relation between its dynamics and the unknown UV-absorbing aerosol that produces its dark morphology. In this paper we present an analytical model for a Kelvin-like wave that offers an explanation of these peculiarities. Under Venus cyclostrophic conditions, this wave is equatorially and vertically trapped where zonal winds peak and extends 7 km in altitude, and its vertical wind perturbations are shown to produce upwelling of the UV absorber. The Y-feature morphology and its 30 day evolution are reproduced as distortions of the wave structure by the Venus winds. ©2015. American Geophysical Union. All Rights Reserved.
publishDate 2015
dc.date.none.fl_str_mv 2015
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/400477
url http://hdl.handle.net/10261/400477
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//CSD2009-00038
info:eu-repo/grantAgreement/MICINN//AYA2011-23552
info:eu-repo/grantAgreement/MINECO//AYA2012-36666
http://dx.doi.org/10.1002/2014GL062280
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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