Monitoring atmospheric phenomena on Titan

International audience For the past 8 years (1998-2005), we have used adaptive optics imaging (with VLT/NACO and CFHT/PUEO) to explore Titan's atmosphere, which is currently scrutinized in situ by the Cassini-Huygens mission. In the course of our work, we have found variations, such as as seaso...

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Main Authors: Hirtzig, Mathieu, Coustenis, Athena, Gendron, Eric, Drossart, Pierre, Negrão, Alberto, Combes, Michel, Lai, Olivier, Rannou, Pascal, Lebonnois, Sébastien, Luz, David
Other Authors: Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Service d'aéronomie (SA), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Canada-France-Hawaii Telescope Corporation (CFHT), National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i Honolulu (UH), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2006
Subjects:
Online Access:https://hal.science/hal-00093994
https://hal.science/hal-00093994/document
https://hal.science/hal-00093994/file/aa3381-05.pdf
https://doi.org/10.1051/0004-6361:20053381
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spelling ftinsu:oai:HAL:hal-00093994v1 2023-06-18T03:43:04+02:00 Monitoring atmospheric phenomena on Titan Hirtzig, Mathieu Coustenis, Athena Gendron, Eric Drossart, Pierre Negrão, Alberto Combes, Michel Lai, Olivier Rannou, Pascal Lebonnois, Sébastien Luz, David Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Service d'aéronomie (SA) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Canada-France-Hawaii Telescope Corporation (CFHT) National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i Honolulu (UH) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) 2006 https://hal.science/hal-00093994 https://hal.science/hal-00093994/document https://hal.science/hal-00093994/file/aa3381-05.pdf https://doi.org/10.1051/0004-6361:20053381 en eng HAL CCSD EDP Sciences info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20053381 hal-00093994 https://hal.science/hal-00093994 https://hal.science/hal-00093994/document https://hal.science/hal-00093994/file/aa3381-05.pdf doi:10.1051/0004-6361:20053381 info:eu-repo/semantics/OpenAccess ISSN: 0004-6361 EISSN: 1432-0756 Astronomy and Astrophysics - A&A https://hal.science/hal-00093994 Astronomy and Astrophysics - A&A, 2006, 456 (2), pp.761-774. ⟨10.1051/0004-6361:20053381⟩ Titan observation [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2006 ftinsu https://doi.org/10.1051/0004-6361:20053381 2023-06-05T21:57:11Z International audience For the past 8 years (1998-2005), we have used adaptive optics imaging (with VLT/NACO and CFHT/PUEO) to explore Titan's atmosphere, which is currently scrutinized in situ by the Cassini-Huygens mission. In the course of our work, we have found variations, such as as seasonal and diurnal effects, as well as temporary features in the southern polar region. The north-south asymmetry is shown to have changed since 2000 in the near-IR and to be currently organized in a brighter northern than southern pole. We study this evolution here. With our data, we also have new significant statistical evidence of diurnal effects in Titan's stratosphere, with a brighter (as much as 19%) morning limb appearing in our images in many cases, when the phase effect is expected on the evening side. The southern bright feature is probably a time-limited seasonal and/or meteorological phenomenon, revolving around the south pole (confined in its motion within the 80$^{\circ}$S parallel) and located somewhere in the upper troposphere (18-40 km of altitude). Its behavior and possible nature are discussed here. Article in Journal/Newspaper South pole Institut national des sciences de l'Univers: HAL-INSU South Pole
institution Open Polar
collection Institut national des sciences de l'Univers: HAL-INSU
op_collection_id ftinsu
language English
topic Titan
observation
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
spellingShingle Titan
observation
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Hirtzig, Mathieu
Coustenis, Athena
Gendron, Eric
Drossart, Pierre
Negrão, Alberto
Combes, Michel
Lai, Olivier
Rannou, Pascal
Lebonnois, Sébastien
Luz, David
Monitoring atmospheric phenomena on Titan
topic_facet Titan
observation
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
description International audience For the past 8 years (1998-2005), we have used adaptive optics imaging (with VLT/NACO and CFHT/PUEO) to explore Titan's atmosphere, which is currently scrutinized in situ by the Cassini-Huygens mission. In the course of our work, we have found variations, such as as seasonal and diurnal effects, as well as temporary features in the southern polar region. The north-south asymmetry is shown to have changed since 2000 in the near-IR and to be currently organized in a brighter northern than southern pole. We study this evolution here. With our data, we also have new significant statistical evidence of diurnal effects in Titan's stratosphere, with a brighter (as much as 19%) morning limb appearing in our images in many cases, when the phase effect is expected on the evening side. The southern bright feature is probably a time-limited seasonal and/or meteorological phenomenon, revolving around the south pole (confined in its motion within the 80$^{\circ}$S parallel) and located somewhere in the upper troposphere (18-40 km of altitude). Its behavior and possible nature are discussed here.
author2 Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA)
Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Service d'aéronomie (SA)
Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Canada-France-Hawaii Telescope Corporation (CFHT)
National Research Council of Canada (NRC)-Centre National de la Recherche Scientifique (CNRS)-University of Hawai'i Honolulu (UH)
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD)
Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris
École normale supérieure - Paris (ENS-PSL)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)
format Article in Journal/Newspaper
author Hirtzig, Mathieu
Coustenis, Athena
Gendron, Eric
Drossart, Pierre
Negrão, Alberto
Combes, Michel
Lai, Olivier
Rannou, Pascal
Lebonnois, Sébastien
Luz, David
author_facet Hirtzig, Mathieu
Coustenis, Athena
Gendron, Eric
Drossart, Pierre
Negrão, Alberto
Combes, Michel
Lai, Olivier
Rannou, Pascal
Lebonnois, Sébastien
Luz, David
author_sort Hirtzig, Mathieu
title Monitoring atmospheric phenomena on Titan
title_short Monitoring atmospheric phenomena on Titan
title_full Monitoring atmospheric phenomena on Titan
title_fullStr Monitoring atmospheric phenomena on Titan
title_full_unstemmed Monitoring atmospheric phenomena on Titan
title_sort monitoring atmospheric phenomena on titan
publisher HAL CCSD
publishDate 2006
url https://hal.science/hal-00093994
https://hal.science/hal-00093994/document
https://hal.science/hal-00093994/file/aa3381-05.pdf
https://doi.org/10.1051/0004-6361:20053381
geographic South Pole
geographic_facet South Pole
genre South pole
genre_facet South pole
op_source ISSN: 0004-6361
EISSN: 1432-0756
Astronomy and Astrophysics - A&A
https://hal.science/hal-00093994
Astronomy and Astrophysics - A&A, 2006, 456 (2), pp.761-774. ⟨10.1051/0004-6361:20053381⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20053381
hal-00093994
https://hal.science/hal-00093994
https://hal.science/hal-00093994/document
https://hal.science/hal-00093994/file/aa3381-05.pdf
doi:10.1051/0004-6361:20053381
op_rights info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.1051/0004-6361:20053381
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