Cited by 32Astro and Planetary ScienceIonosphere and magnetosphere dynamicsAtmospheric Ozone and Climate

Stratospheric benzene and hydrocarbon aerosols detected in Saturn’s auroral regions

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Guerlet, S., Fouchet, T., Vinatier, S., Simon, A. A., Dartois, E., Spiga, A.·2015·Astronomy & Astrophysics

Abstract

Context. Saturn’s polar upper atmosphere exhibits significant auroral activity; however, its impact on stratospheric chemistry (i.e. the production of benzene and heavier hydrocarbons) and thermal structure remains poorly documented.

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Registry

Crossref · 10.1051/0004-6361/201424745

Cites

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  • Benzene is 0.6-0.8× the <1-mbar photochemical predictions at the poles, consistent with previous findings using limb-sounding CIRS spectra.

    “That benzene is 0.6–0.8× <1-mbar photochemical predictions at the poles is consistent with previous findings using limb-sounding CIRS spectra25.”

    From A hexagon in Saturn's northern stratosphere surrounding the emerging summertime polar vortex (2018) · cites this paper as [25]

    Section 2 confirms that the study used Cassini/CIRS limb spectra, and Section 3.2 reports benzene measurements at 80° S. But Section 4.1 describes a strong disagreement with the photochemical model’s predicted meridional trend; it does not report that polar benzene is 0.6–0.8 times the model’s predictions below 1 mbar. The numerical comparison is therefore unsupported by this copy. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • The warmer southern lower stratosphere hints at a missing source of heat in the radiative model during southern summer, possibly stratospheric aerosols or stronger polar subsidence, the latter supported by excess C2H2 in the SPSV compared to the NPSV.

    “This hints at a missing source of heat in the radiative model for the lower stratosphere during southern summer that was not required in the north at Ls = 88°, maybe due to stratospheric aerosols (radiative) or stronger polar subsidence (adiabatic heating)12,13,25, the latter being supported by the excess C2H2 observed in the SPSV compared to the NPSV in Table 1, discussed below.”
  • At lower pressures, both NPSV and SPSV inversions suggest a weak stratopause, with temperatures declining from 160 K at 0.3 mbar to ~150 K at 0.01 mbar, consistent with the radiative model with and without polar aerosols.

    “At lower pressures, both the NPSV and SPSV inversions suggest a weak stratopause, with temperatures declining from 160 K at 0.3 mbar to ~150 K at 0.01 mbar, again consistent with the radiative model with and without the presence of polar aerosols25.”
  • Aerosols constitute a significant part of the radiative budget and can introduce a 5-6 K warming effect in the stratosphere.

    “However, aerosols also constitute a significant part of the radiative budget13, which can introduce a 5–6 K warming effect in the stratosphere25.”

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Cites

Flagged first, then by citations

Research works printed but not linked: 33

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Cited by

Sorted by citations

Authors
Guerlet, S., Fouchet, T., Vinatier, S., Simon, A. A., Dartois, E., & Spiga, A.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Goddard Space Flight Center (US)
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2015-08
Volume
580
Pages
A89
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
OpenAlex
W1112158574
Cited by
32
References
34
Citations by year
2026: 1 · 2025: 1 · 2024: 7 · 2023: 1 · 2022: 1 · 2020: 8 · 2019: 5 · 2018: 4 · 2017: 1 · 2016: 2 · 2015: 1
FWCI
1.52
Type
journal article
Language
en
Open access
Locations
  • Astronomy and Astrophysics (publishedVersion)
  • Springer Link (Chiba Institute of Technology) (submittedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • Agence Nationale de la Recherche (ANR-12-PDOC-0013)
  • Institut Universitaire de France
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Ionosphere and magnetosphere dynamics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric Ozone and Climate
Keywords
Saturn, auroral zone, stratospheric chemistry, benzene, thermal structure, Saturn atmosphere

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