The detection of benzene in Saturn's upper atmosphere
International audience The stratosphere of Saturn contains a photochemical haze that appears thicker at the poles and may originate from chemistry driven by the aurora. Models suggest that the formation of hydrocarbon haze is initiated at high altitudes by the production of benzene, which is followe...
Published in: | Geophysical Research Letters |
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Online Access: | https://insu.hal.science/insu-03727105 https://insu.hal.science/insu-03727105/document https://insu.hal.science/insu-03727105/file/Geophysical%20Research%20Letters%20-%202016%20-%20Koskinen%20-%20The%20detection%20of%20benzene%20in%20Saturn%20s%20upper%20atmosphere.pdf https://doi.org/10.1002/2016GL070000 |
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ftecoleponts:oai:HAL:insu-03727105v1 2024-06-09T07:49:09+00:00 The detection of benzene in Saturn's upper atmosphere Koskinen, T. T. Moses, J. I. West, R. A. Guerlet, S. Jouchoux, A. 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) 2016 https://insu.hal.science/insu-03727105 https://insu.hal.science/insu-03727105/document https://insu.hal.science/insu-03727105/file/Geophysical%20Research%20Letters%20-%202016%20-%20Koskinen%20-%20The%20detection%20of%20benzene%20in%20Saturn%20s%20upper%20atmosphere.pdf https://doi.org/10.1002/2016GL070000 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2016GL070000 insu-03727105 https://insu.hal.science/insu-03727105 https://insu.hal.science/insu-03727105/document https://insu.hal.science/insu-03727105/file/Geophysical%20Research%20Letters%20-%202016%20-%20Koskinen%20-%20The%20detection%20of%20benzene%20in%20Saturn%20s%20upper%20atmosphere.pdf BIBCODE: 2016GeoRL.43.7895K doi:10.1002/2016GL070000 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03727105 Geophysical Research Letters, 2016, 43, pp.7895-7901. ⟨10.1002/2016GL070000⟩ Saturn photochemistry [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2016 ftecoleponts https://doi.org/10.1002/2016GL070000 2024-05-16T12:38:37Z International audience The stratosphere of Saturn contains a photochemical haze that appears thicker at the poles and may originate from chemistry driven by the aurora. Models suggest that the formation of hydrocarbon haze is initiated at high altitudes by the production of benzene, which is followed by the formation of heavier ring polycyclic aromatic hydrocarbons. Until now there have been no observations of hydrocarbons or photochemical haze in the production region to constrain these models. We report the first vertical profiles of benzene and constraints on haze opacity in the upper atmosphere of Saturn retrieved from Cassini Ultraviolet Imaging Spectrograph stellar occultations. We detect benzene at several different latitudes and find that the observed abundances of benzene can be produced by solar-driven ion chemistry that is enhanced at high latitudes in the northern hemisphere during spring. We also detect evidence for condensation and haze at high southern latitudes in the polar night. Article in Journal/Newspaper polar night École des Ponts ParisTech: HAL Geophysical Research Letters 43 15 7895 7901 |
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Open Polar |
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École des Ponts ParisTech: HAL |
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ftecoleponts |
language |
English |
topic |
Saturn photochemistry [SDU]Sciences of the Universe [physics] |
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Saturn photochemistry [SDU]Sciences of the Universe [physics] Koskinen, T. T. Moses, J. I. West, R. A. Guerlet, S. Jouchoux, A. The detection of benzene in Saturn's upper atmosphere |
topic_facet |
Saturn photochemistry [SDU]Sciences of the Universe [physics] |
description |
International audience The stratosphere of Saturn contains a photochemical haze that appears thicker at the poles and may originate from chemistry driven by the aurora. Models suggest that the formation of hydrocarbon haze is initiated at high altitudes by the production of benzene, which is followed by the formation of heavier ring polycyclic aromatic hydrocarbons. Until now there have been no observations of hydrocarbons or photochemical haze in the production region to constrain these models. We report the first vertical profiles of benzene and constraints on haze opacity in the upper atmosphere of Saturn retrieved from Cassini Ultraviolet Imaging Spectrograph stellar occultations. We detect benzene at several different latitudes and find that the observed abundances of benzene can be produced by solar-driven ion chemistry that is enhanced at high latitudes in the northern hemisphere during spring. We also detect evidence for condensation and haze at high southern latitudes in the polar night. |
author2 |
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 |
Koskinen, T. T. Moses, J. I. West, R. A. Guerlet, S. Jouchoux, A. |
author_facet |
Koskinen, T. T. Moses, J. I. West, R. A. Guerlet, S. Jouchoux, A. |
author_sort |
Koskinen, T. T. |
title |
The detection of benzene in Saturn's upper atmosphere |
title_short |
The detection of benzene in Saturn's upper atmosphere |
title_full |
The detection of benzene in Saturn's upper atmosphere |
title_fullStr |
The detection of benzene in Saturn's upper atmosphere |
title_full_unstemmed |
The detection of benzene in Saturn's upper atmosphere |
title_sort |
detection of benzene in saturn's upper atmosphere |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://insu.hal.science/insu-03727105 https://insu.hal.science/insu-03727105/document https://insu.hal.science/insu-03727105/file/Geophysical%20Research%20Letters%20-%202016%20-%20Koskinen%20-%20The%20detection%20of%20benzene%20in%20Saturn%20s%20upper%20atmosphere.pdf https://doi.org/10.1002/2016GL070000 |
genre |
polar night |
genre_facet |
polar night |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03727105 Geophysical Research Letters, 2016, 43, pp.7895-7901. ⟨10.1002/2016GL070000⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2016GL070000 insu-03727105 https://insu.hal.science/insu-03727105 https://insu.hal.science/insu-03727105/document https://insu.hal.science/insu-03727105/file/Geophysical%20Research%20Letters%20-%202016%20-%20Koskinen%20-%20The%20detection%20of%20benzene%20in%20Saturn%20s%20upper%20atmosphere.pdf BIBCODE: 2016GeoRL.43.7895K doi:10.1002/2016GL070000 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2016GL070000 |
container_title |
Geophysical Research Letters |
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43 |
container_issue |
15 |
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7895 |
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7901 |
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