Spatiotemporal variability of Saturn's zonal winds observed by Cassini
The strong zonal winds on giant planets are among the most interesting phenomena in our solar system. Observations recorded by the Composite Infrared Spectrometer (CIRS), the Imaging Science Subsystem (ISS), and the Visual and Infrared Mapping Spectrometer (VIMS) on the Cassini spacecraft are utiliz...
| Autores: | , , , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/423021 |
| Acesso em linha: | https://hdl.handle.net/2117/423021 https://dx.doi.org/10.1029/2024JE008515 |
| Access Level: | acceso abierto |
| Palavra-chave: | Saturn (Planet) Winds - Measurement Atmosphere, Upper--Radiosonde observations Atmospheric circulation Saturn (Planeta) Vents--Mesurament Atmosfera superior--Radiosondatges Circulació atmosfèrica Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
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Spatiotemporal variability of Saturn's zonal winds observed by CassiniWang, XinyueLi, LimingGuan, LarryJiang, XunFry, Patrick M.Dyudina, Ulyana A.Fletcher, Leigh N.García Melendo, Enrique José|||0000-0002-3354-1140Hueso, RicardoMorales Juberías, RaúlSánchez Lavega, AgustínSimon-Miller, Amy A.Saturn (Planet)Winds - MeasurementAtmosphere, Upper--Radiosonde observationsAtmospheric circulationSaturn (Planeta)Vents--MesuramentAtmosfera superior--RadiosondatgesCirculació atmosfèricaÀrees temàtiques de la UPC::Física::Astronomia i astrofísicaThe strong zonal winds on giant planets are among the most interesting phenomena in our solar system. Observations recorded by the Composite Infrared Spectrometer (CIRS), the Imaging Science Subsystem (ISS), and the Visual and Infrared Mapping Spectrometer (VIMS) on the Cassini spacecraft are utilized to investigate spatiotemporal variations in Saturn's zonal winds. A general thermal wind equation works for investigating the vertical structure of zonal winds at all latitudes, but it has integration gaps near the equator caused by the cylindrical integration path. Here, we develop an algorithm to address this limitation, which is validated by the observed zonal winds. The algorithm is combined with the CIRS-retrieved temperature and the ISS-measured winds to generate a complete picture of the vertical structure of Saturn's zonal winds for the upper troposphere (i.e., 50–500 mbar), which suggests that the equatorial zonal winds have complicated vertical structures. The zonal winds from 10°S to 10°N initially decrease with altitude and then increase. Additionally, the intense narrow equatorial jet between 3°S and 3°N widens with altitude. The zonal winds are further used to examine the atmospheric stability, which implies some unstable regions. Finally, the analysis of Cassini multi-instrument observations reveals different temporal behaviors of zonal winds in the vertical direction, which suggests that seasonally varying solar flux is one of the drivers of temporal variations in zonal winds.We are grateful to the Cassini CIRS, ISS, and VIMS teams for recording the raw data sets. Liming Li acknowledges the support received from the NASA ROSES Cassini Data Analysis Program and Planetary Data Archiving, Restoration, and Tools Program. Leigh N. Fletcher was supported by a European Research Council Consolidator Grant (under the European Union's Horizon 2020 research and innovation programme, Grant 723890) at the University of Leicester.Peer ReviewedJohn Wiley & sons20252025-01-0120252025-01-29journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/423021https://dx.doi.org/10.1029/2024JE008515reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4230212026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| title |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| spellingShingle |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini Wang, Xinyue Saturn (Planet) Winds - Measurement Atmosphere, Upper--Radiosonde observations Atmospheric circulation Saturn (Planeta) Vents--Mesurament Atmosfera superior--Radiosondatges Circulació atmosfèrica Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
| title_short |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| title_full |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| title_fullStr |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| title_full_unstemmed |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| title_sort |
Spatiotemporal variability of Saturn's zonal winds observed by Cassini |
| dc.creator.none.fl_str_mv |
Wang, Xinyue Li, Liming Guan, Larry Jiang, Xun Fry, Patrick M. Dyudina, Ulyana A. Fletcher, Leigh N. García Melendo, Enrique José|||0000-0002-3354-1140 Hueso, Ricardo Morales Juberías, Raúl Sánchez Lavega, Agustín Simon-Miller, Amy A. |
| author |
Wang, Xinyue |
| author_facet |
Wang, Xinyue Li, Liming Guan, Larry Jiang, Xun Fry, Patrick M. Dyudina, Ulyana A. Fletcher, Leigh N. García Melendo, Enrique José|||0000-0002-3354-1140 Hueso, Ricardo Morales Juberías, Raúl Sánchez Lavega, Agustín Simon-Miller, Amy A. |
| author_role |
author |
| author2 |
Li, Liming Guan, Larry Jiang, Xun Fry, Patrick M. Dyudina, Ulyana A. Fletcher, Leigh N. García Melendo, Enrique José|||0000-0002-3354-1140 Hueso, Ricardo Morales Juberías, Raúl Sánchez Lavega, Agustín Simon-Miller, Amy A. |
| author2_role |
author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Saturn (Planet) Winds - Measurement Atmosphere, Upper--Radiosonde observations Atmospheric circulation Saturn (Planeta) Vents--Mesurament Atmosfera superior--Radiosondatges Circulació atmosfèrica Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
| topic |
Saturn (Planet) Winds - Measurement Atmosphere, Upper--Radiosonde observations Atmospheric circulation Saturn (Planeta) Vents--Mesurament Atmosfera superior--Radiosondatges Circulació atmosfèrica Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
| description |
The strong zonal winds on giant planets are among the most interesting phenomena in our solar system. Observations recorded by the Composite Infrared Spectrometer (CIRS), the Imaging Science Subsystem (ISS), and the Visual and Infrared Mapping Spectrometer (VIMS) on the Cassini spacecraft are utilized to investigate spatiotemporal variations in Saturn's zonal winds. A general thermal wind equation works for investigating the vertical structure of zonal winds at all latitudes, but it has integration gaps near the equator caused by the cylindrical integration path. Here, we develop an algorithm to address this limitation, which is validated by the observed zonal winds. The algorithm is combined with the CIRS-retrieved temperature and the ISS-measured winds to generate a complete picture of the vertical structure of Saturn's zonal winds for the upper troposphere (i.e., 50–500 mbar), which suggests that the equatorial zonal winds have complicated vertical structures. The zonal winds from 10°S to 10°N initially decrease with altitude and then increase. Additionally, the intense narrow equatorial jet between 3°S and 3°N widens with altitude. The zonal winds are further used to examine the atmospheric stability, which implies some unstable regions. Finally, the analysis of Cassini multi-instrument observations reveals different temporal behaviors of zonal winds in the vertical direction, which suggests that seasonally varying solar flux is one of the drivers of temporal variations in zonal winds. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2025-01-01 2025 2025-01-29 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/423021 https://dx.doi.org/10.1029/2024JE008515 |
| url |
https://hdl.handle.net/2117/423021 https://dx.doi.org/10.1029/2024JE008515 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
John Wiley & sons |
| publisher.none.fl_str_mv |
John Wiley & sons |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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