Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations

Jupiter's atmosphere has been sounded in transmission from the UV to the IR, as if it were a transiting exoplanet, by observing Ganymede while passing through Jupiter's shadow. The spectra show strong extinction due to the presence of aerosols and haze in Jupiter's atmosphere and stro...

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Autores: López-Puertas, Manuel, Montañés-Rodríguez, P., Pallé, Enric, Höpfner, M., Sánchez-López, A., García Comas, Maia, Funke, Bernd
Formato: artículo
Fecha de publicación:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/212817
Acesso em linha:http://hdl.handle.net/10261/212817
Access Level:acceso abierto
Palavra-chave:Planets and satellites: atmospheres
Planets and satellites: composition
Planets and satellites: gaseous planets
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spelling Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based ObservationsLópez-Puertas, ManuelMontañés-Rodríguez, P.Pallé, EnricHöpfner, M.Sánchez-López, A.García Comas, MaiaFunke, BerndPlanets and satellites: atmospheresPlanets and satellites: compositionPlanets and satellites: gaseous planetsJupiter's atmosphere has been sounded in transmission from the UV to the IR, as if it were a transiting exoplanet, by observing Ganymede while passing through Jupiter's shadow. The spectra show strong extinction due to the presence of aerosols and haze in Jupiter's atmosphere and strong absorption features of methane. Here, we report a new detailed analysis of these observations, with special emphasis on the retrievals of the vertical distribution of the aerosols and their sizes, and the properties and distribution of the stratospheric water ice. Our analysis suggests the presence of aerosols near the equator in the altitude range of 100 hPa up to at least 0.01 hPa, with a layer of small particles (mean radius of 0.1 μm) in the upper part (above 0.1 hPa), an intermediate layer of aerosols with a radius of 0.3 μm, extending between ∼10 and 0.01 hPa, and a layer with larger sizes of ∼0.6 μm at approximately 100-1 hPa. The corresponding loads for each layer are ∼2 × 10 g cm, ∼3.4 × 10 g cm, and ∼1.5 × 10 g cm, respectively, with a total load of ∼2.0 × 10 g cm. The lower and middle layers agree well with previous measurements; but the finer particles of 0.1 μm above 0.01 hPa have not been reported before. The spectra also show two broad features near 1.5 and 2.0 μm, which we attribute to a layer of very small (∼10 nm) HO crystalline ice in Jupiter's lower stratosphere (∼0.5 hPa). While these spectral signatures seem to be unequivocally attributable to crystalline water ice, they require a large amount of water ice to explain the strong absorption features.© 2018. The American Astronomical Society. All rights reserved.We are very grateful to Rafael Escribano, Victor Herrero, Anni Maattanen, Beatriz Mate, Agustin Sanchez-Lavega, and Miguel Angel Satorre for very valuable discussions on the water ice topic. The IAA team was supported by the Spanish MICINN under projects ESP2014-54362-P, ESP2017-87143-R, and EC FEDER funds. This work is also partly financed by the Spanish Ministry of Economics and Competitiveness through grant ESP2013-48391-C4-2-R. M.G.C. is also supported by the MINECO under its >Ramon y Cajal> subprogram.American Astronomical SocietyMinisterio de Economía y Competitividad (España)European CommissionMinisterio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020182020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/212817reponame: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/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2014-54362-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-87143-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2013-48391-C4-2-Rhttp://dx.doi.org/10.3847/1538-3881/aadcefSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2128172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
title Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
spellingShingle Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
López-Puertas, Manuel
Planets and satellites: atmospheres
Planets and satellites: composition
Planets and satellites: gaseous planets
title_short Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
title_full Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
title_fullStr Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
title_full_unstemmed Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
title_sort Aerosols and Water Ice in Jupiter's Stratosphere from UV-NIR Ground-based Observations
dc.creator.none.fl_str_mv López-Puertas, Manuel
Montañés-Rodríguez, P.
Pallé, Enric
Höpfner, M.
Sánchez-López, A.
García Comas, Maia
Funke, Bernd
author López-Puertas, Manuel
author_facet López-Puertas, Manuel
Montañés-Rodríguez, P.
Pallé, Enric
Höpfner, M.
Sánchez-López, A.
García Comas, Maia
Funke, Bernd
author_role author
author2 Montañés-Rodríguez, P.
Pallé, Enric
Höpfner, M.
Sánchez-López, A.
García Comas, Maia
Funke, Bernd
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
European Commission
Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Planets and satellites: atmospheres
Planets and satellites: composition
Planets and satellites: gaseous planets
topic Planets and satellites: atmospheres
Planets and satellites: composition
Planets and satellites: gaseous planets
description Jupiter's atmosphere has been sounded in transmission from the UV to the IR, as if it were a transiting exoplanet, by observing Ganymede while passing through Jupiter's shadow. The spectra show strong extinction due to the presence of aerosols and haze in Jupiter's atmosphere and strong absorption features of methane. Here, we report a new detailed analysis of these observations, with special emphasis on the retrievals of the vertical distribution of the aerosols and their sizes, and the properties and distribution of the stratospheric water ice. Our analysis suggests the presence of aerosols near the equator in the altitude range of 100 hPa up to at least 0.01 hPa, with a layer of small particles (mean radius of 0.1 μm) in the upper part (above 0.1 hPa), an intermediate layer of aerosols with a radius of 0.3 μm, extending between ∼10 and 0.01 hPa, and a layer with larger sizes of ∼0.6 μm at approximately 100-1 hPa. The corresponding loads for each layer are ∼2 × 10 g cm, ∼3.4 × 10 g cm, and ∼1.5 × 10 g cm, respectively, with a total load of ∼2.0 × 10 g cm. The lower and middle layers agree well with previous measurements; but the finer particles of 0.1 μm above 0.01 hPa have not been reported before. The spectra also show two broad features near 1.5 and 2.0 μm, which we attribute to a layer of very small (∼10 nm) HO crystalline ice in Jupiter's lower stratosphere (∼0.5 hPa). While these spectral signatures seem to be unequivocally attributable to crystalline water ice, they require a large amount of water ice to explain the strong absorption features.© 2018. The American Astronomical Society. All rights reserved.
publishDate 2018
dc.date.none.fl_str_mv 2018
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/212817
url http://hdl.handle.net/10261/212817
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/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2014-54362-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-87143-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2013-48391-C4-2-R
http://dx.doi.org/10.3847/1538-3881/aadcef
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Astronomical Society
publisher.none.fl_str_mv American Astronomical Society
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
repository.name.fl_str_mv
repository.mail.fl_str_mv
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