Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations

Context. First identified in 2016 by the Japan Aerospace eXploration Agency (JAXA) Akatsuki mission, the discontinuity or disruption is a recurrent wave observed to propagate over decades at the deeper clouds of Venus (47–56 km above the surface), while its absence at the top of the clouds (∼70 km)...

Descripción completa

Detalles Bibliográficos
Autores: Peralta Calvillo, Javier, Cidadão, A., Morrone, L., Foster, C., Bullock, M., Young, E. F., Garate López, Itziar, Sánchez Lavega, Agustín María, Horinouchi, T., Imamura, T., Kardasis, E., Yamazaki, A., Watanabe, S.
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/61859
Acceso en línea:http://hdl.handle.net/10810/61859
Access Level:acceso abierto
Palabra clave:waves
planets and satellites: atmospheres
planets and satellites: terrestrial planets
methods: data analysis
id ES_aa1885457f5ace36ff6d71efa07eaef2
oai_identifier_str oai:addi.ehu.eus:10810/61859
network_acronym_str ES
network_name_str España
repository_id_str
spelling Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observationsPeralta Calvillo, JavierCidadão, A.Morrone, L.Foster, C.Bullock, M.Young, E. F.Garate López, ItziarSánchez Lavega, Agustín MaríaHorinouchi, T.Imamura, T.Kardasis, E.Yamazaki, A.Watanabe, S.wavesplanets and satellites: atmospheresplanets and satellites: terrestrial planetsmethods: data analysisContext. First identified in 2016 by the Japan Aerospace eXploration Agency (JAXA) Akatsuki mission, the discontinuity or disruption is a recurrent wave observed to propagate over decades at the deeper clouds of Venus (47–56 km above the surface), while its absence at the top of the clouds (∼70 km) suggests that it dissipates at the upper clouds and contributes to the maintenance of the puzzling atmospheric superrotation of Venus through wave-mean flow interaction. Aims. Taking advantage of the campaign of ground-based observations undertaken in coordination with the Akatsuki mission from December 2021 until July 2022, we undertook the longest uninterrupted monitoring of the cloud discontinuity to date to obtain a pioneering long-term characterisation of its main properties and to better constrain its recurrence and lifetime. Methods. The dayside upper, middle, and nightside lower clouds were studied with images acquired by the Akatsuki Ultraviolet Imager (UVI), amateur observers, and SpeX at the NASA Infrared Telescope Facility (IRTF). Hundreds of images were inspected in search of the discontinuity events and to measure key properties such as its dimensions, orientation, and rotation period. Results. We succeeded in tracking the discontinuity at the middle clouds during 109 days without interruption. The discontinuity exhibited properties nearly identical to measurements in 2016 and 2020, with an orientation of 91° ±8°, length of 4100 ± 800 km, width of 500 ± 100 km, and a rotation period of 5.11 ± 0.09 days. Ultraviolet images during 13–14 June 2022 suggest that the discontinuity may have manifested at the top of the clouds during ∼21 h as a result of an altitude change in the critical level for this wave, due to slower zonal winds.J.P. thanks EMERGIA funding from Junta de Andalucía in Spain (code: EMERGIA20_00414). I.G.-L. and A.S.-L. were supported by Grant PID2019-109467GB-I00 funded by MCIN/AEI/10.13039/501100011033/ and by Grupos 1128 Gobierno Vasco IT1742-22. We thank the members of JAXA’s Akatsuki mission and Visiting Astronomers at the Infrared Telescope Facility operated by the University of Hawaii under contract 80HQTR19D0030 with NASA. This research would have been impossible without the many amateur observers who observed Venus intensively during the investigated period and shared their images, although we would like to highlight contributions from M. A. Bianchi, G. Calapai, D. Kananovich, N. MacNeill, V. Mirabella, W. M. Lonsdale, R. Sedrani, L. S. Viola and G. Z. Wang.EDP Sciences202320232023info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/61859reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PID2019-109467GB-I00/https://www.aanda.org/articles/aa/full_html/2023/04/aa44822-22/aa44822-22.htmlinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/© The Authors 2023. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Atribución 3.0 Españaoai:addi.ehu.eus:10810/618592026-06-18T09:23:17Z
dc.title.none.fl_str_mv Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
title Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
spellingShingle Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
Peralta Calvillo, Javier
waves
planets and satellites: atmospheres
planets and satellites: terrestrial planets
methods: data analysis
title_short Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
title_full Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
title_fullStr Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
title_full_unstemmed Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
title_sort Venus cloud discontinuity in 2022: The first long-term study with uninterrupted observations
dc.creator.none.fl_str_mv Peralta Calvillo, Javier
Cidadão, A.
Morrone, L.
Foster, C.
Bullock, M.
Young, E. F.
Garate López, Itziar
Sánchez Lavega, Agustín María
Horinouchi, T.
Imamura, T.
Kardasis, E.
Yamazaki, A.
Watanabe, S.
author Peralta Calvillo, Javier
author_facet Peralta Calvillo, Javier
Cidadão, A.
Morrone, L.
Foster, C.
Bullock, M.
Young, E. F.
Garate López, Itziar
Sánchez Lavega, Agustín María
Horinouchi, T.
Imamura, T.
Kardasis, E.
Yamazaki, A.
Watanabe, S.
author_role author
author2 Cidadão, A.
Morrone, L.
Foster, C.
Bullock, M.
Young, E. F.
Garate López, Itziar
Sánchez Lavega, Agustín María
Horinouchi, T.
Imamura, T.
Kardasis, E.
Yamazaki, A.
Watanabe, S.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv waves
planets and satellites: atmospheres
planets and satellites: terrestrial planets
methods: data analysis
topic waves
planets and satellites: atmospheres
planets and satellites: terrestrial planets
methods: data analysis
description Context. First identified in 2016 by the Japan Aerospace eXploration Agency (JAXA) Akatsuki mission, the discontinuity or disruption is a recurrent wave observed to propagate over decades at the deeper clouds of Venus (47–56 km above the surface), while its absence at the top of the clouds (∼70 km) suggests that it dissipates at the upper clouds and contributes to the maintenance of the puzzling atmospheric superrotation of Venus through wave-mean flow interaction. Aims. Taking advantage of the campaign of ground-based observations undertaken in coordination with the Akatsuki mission from December 2021 until July 2022, we undertook the longest uninterrupted monitoring of the cloud discontinuity to date to obtain a pioneering long-term characterisation of its main properties and to better constrain its recurrence and lifetime. Methods. The dayside upper, middle, and nightside lower clouds were studied with images acquired by the Akatsuki Ultraviolet Imager (UVI), amateur observers, and SpeX at the NASA Infrared Telescope Facility (IRTF). Hundreds of images were inspected in search of the discontinuity events and to measure key properties such as its dimensions, orientation, and rotation period. Results. We succeeded in tracking the discontinuity at the middle clouds during 109 days without interruption. The discontinuity exhibited properties nearly identical to measurements in 2016 and 2020, with an orientation of 91° ±8°, length of 4100 ± 800 km, width of 500 ± 100 km, and a rotation period of 5.11 ± 0.09 days. Ultraviolet images during 13–14 June 2022 suggest that the discontinuity may have manifested at the top of the clouds during ∼21 h as a result of an altitude change in the critical level for this wave, due to slower zonal winds.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/61859
url http://hdl.handle.net/10810/61859
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PID2019-109467GB-I00/
https://www.aanda.org/articles/aa/full_html/2023/04/aa44822-22/aa44822-22.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869416133080121344
score 15,300724

Similares en LA Referencia