Titan haze distribution and optical properties retrieved from recent observations
International audience The VIMS instrument onboard Cassini observed the north polar region of Titan at 113° phase angle, the 28th december 2006. On this spectral image, a vast polar cloud can be seen northward to 62°N, and elsewhere, the haze appears as the dominant source of scattering. Because the...
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ftccsdartic:oai:HAL:hal-00470538v1 2023-05-15T18:22:50+02:00 Titan haze distribution and optical properties retrieved from recent observations Rannou, Pascal Cours, Thibaud Le Mouélic, S. Rodriguez, S. Sotin, C. Drossart, P. Brown, R. Groupe de spectrométrie moléculaire et atmosphérique (GSMA) Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Planétologie et Géodynamique UMR 6112 (LPG) Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7) Jet Propulsion Laboratory (JPL) California Institute of Technology (CALTECH)-NASA 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) Lunar and Planetary Laboratory Tucson (LPL) University of Arizona 2010 https://hal.archives-ouvertes.fr/hal-00470538 https://doi.org/10.1016/j.icarus.2010.03.016 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2010.03.016 hal-00470538 https://hal.archives-ouvertes.fr/hal-00470538 doi:10.1016/j.icarus.2010.03.016 ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.archives-ouvertes.fr/hal-00470538 Icarus, Elsevier, 2010, 208 (2), pp.850-867. ⟨10.1016/j.icarus.2010.03.016⟩ Titan Photometry [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] info:eu-repo/semantics/article Journal articles 2010 ftccsdartic https://doi.org/10.1016/j.icarus.2010.03.016 2021-11-21T04:44:09Z International audience The VIMS instrument onboard Cassini observed the north polar region of Titan at 113° phase angle, the 28th december 2006. On this spectral image, a vast polar cloud can be seen northward to 62°N, and elsewhere, the haze appears as the dominant source of scattering. Because the surface does not appear in the wavelength range between 0.3 and 4.9 μm, this spectro-image is ideal to study airborn scatterers both in methane bands and windows. In this work, we study this image, along with another image taken at 13° phase angle. This image probe both the atmosphere and the surface from pole to pole. First, we characterize the spatial distribution of the haze layer above 100 km between 80°S and 70°N. We find a north south asymmetry with a haze opacity increasing by a factor 3 from the south pole to the equator, then a constant value up to about 30°N and a decrease of a factor 2 between 30°N and about 60°N. Beyond 60°N, we can see the influence of the north polar cloud, even in the band, but no polar haze accumulation. Article in Journal/Newspaper South pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) South Pole Icarus 208 2 850 867 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Titan Photometry [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
spellingShingle |
Titan Photometry [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] Rannou, Pascal Cours, Thibaud Le Mouélic, S. Rodriguez, S. Sotin, C. Drossart, P. Brown, R. Titan haze distribution and optical properties retrieved from recent observations |
topic_facet |
Titan Photometry [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
description |
International audience The VIMS instrument onboard Cassini observed the north polar region of Titan at 113° phase angle, the 28th december 2006. On this spectral image, a vast polar cloud can be seen northward to 62°N, and elsewhere, the haze appears as the dominant source of scattering. Because the surface does not appear in the wavelength range between 0.3 and 4.9 μm, this spectro-image is ideal to study airborn scatterers both in methane bands and windows. In this work, we study this image, along with another image taken at 13° phase angle. This image probe both the atmosphere and the surface from pole to pole. First, we characterize the spatial distribution of the haze layer above 100 km between 80°S and 70°N. We find a north south asymmetry with a haze opacity increasing by a factor 3 from the south pole to the equator, then a constant value up to about 30°N and a decrease of a factor 2 between 30°N and about 60°N. Beyond 60°N, we can see the influence of the north polar cloud, even in the band, but no polar haze accumulation. |
author2 |
Groupe de spectrométrie moléculaire et atmosphérique (GSMA) Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Planétologie et Géodynamique UMR 6112 (LPG) Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7) Jet Propulsion Laboratory (JPL) California Institute of Technology (CALTECH)-NASA 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) Lunar and Planetary Laboratory Tucson (LPL) University of Arizona |
format |
Article in Journal/Newspaper |
author |
Rannou, Pascal Cours, Thibaud Le Mouélic, S. Rodriguez, S. Sotin, C. Drossart, P. Brown, R. |
author_facet |
Rannou, Pascal Cours, Thibaud Le Mouélic, S. Rodriguez, S. Sotin, C. Drossart, P. Brown, R. |
author_sort |
Rannou, Pascal |
title |
Titan haze distribution and optical properties retrieved from recent observations |
title_short |
Titan haze distribution and optical properties retrieved from recent observations |
title_full |
Titan haze distribution and optical properties retrieved from recent observations |
title_fullStr |
Titan haze distribution and optical properties retrieved from recent observations |
title_full_unstemmed |
Titan haze distribution and optical properties retrieved from recent observations |
title_sort |
titan haze distribution and optical properties retrieved from recent observations |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.archives-ouvertes.fr/hal-00470538 https://doi.org/10.1016/j.icarus.2010.03.016 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.archives-ouvertes.fr/hal-00470538 Icarus, Elsevier, 2010, 208 (2), pp.850-867. ⟨10.1016/j.icarus.2010.03.016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2010.03.016 hal-00470538 https://hal.archives-ouvertes.fr/hal-00470538 doi:10.1016/j.icarus.2010.03.016 |
op_doi |
https://doi.org/10.1016/j.icarus.2010.03.016 |
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Icarus |
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208 |
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