64 citations · 510 across the 23 of their papers we have counts for
22 papers · 1 filter
Surveying exogenous species in Saturn with ALMA I. Detecting and Mapping CO
Deborah Bardet, Thierry Fouchet, Thibault Cavalié +5
The origin of carbon monoxide (CO) in Saturn's stratosphere remains uncertain, with proposed sources including internal thermochemical production, cometary impacts, and exogenic ma…
Diurnal temperature variations and migrating thermal tides in the Martian lower atmosphere observed by the Emirates Mars InfraRed Spectrometer
Siteng Fan, François Forget, Michael D. Smith +12
The Martian atmosphere experiences large diurnal variations due to the ~24.6 h planetary rotation and its low heat capacity. Understanding such variations on a planetary scale is l…
Storms and convection on Uranus and Neptune: impact of methane abundance revealed by a 3D cloud-resolving model
Noé Clément, Jérémy Leconte, Aymeric Spiga +8
Uranus and Neptune have atmospheres dominated by molecular hydrogen and helium. In the upper troposphere, methane is the third main molecule and condenses, yielding a vertical grad…
Temperature and composition disturbances in the southern auroral region of Jupiter revealed by JWST/MIRI
Pablo Rodríguez-Ovalle, Thierry Fouchet, Sandrine Guerlet +17
Jupiters south polar region was observed by JWST Mid Infrared Instrument in December 2022. We used the Medium Resolution Spectrometer mode to provide new information about Jupiters…
A pole-to-pole map of hydrocarbons in Saturn's upper stratosphere and mesosphere
Zarah L. Brown, Tommi T. Koskinen, Julianne I. Moses +1
We analyze data from the final two years of the Cassini mission to retrieve the distributions of methane, ethane, acetylene, ethylene, and benzene in Saturn's upper stratosphere an…
Radiative-convective models of the atmospheres of Uranus and Neptune: heating sources and seasonal effects
G. Milcareck, S. Guerlet, F. Montmessin +10
The observations made during the Voyager 2 flyby have shown that the stratosphere of Uranus and Neptune are warmer than expected by previous models. In addition, no seasonal variab…
Multilayer hazes over Saturn's hexagon from Cassini ISS limb images
A. Sánchez-Lavega, A. García-Muñoz, T. del Río-Gaztelurrutia +5
In June 2015, Cassini high-resolution images of Saturn's limb southwards of the planet's hexagonal wave revealed a system of at least six stacked haze layers above the upper cloud…
A 3D picture of moist-convection inhibition in hydrogen-rich atmospheres: Implications for K2-18 b
Jérémy Leconte, Aymeric Spiga, Noé Clément +9
While small, Neptune-like planets are among the most abundant exoplanets, our understanding of their atmospheric structure and dynamics remains sparse. In particular, many unknowns…
Saturn's Atmosphere in Northern Summer Revealed by JWST/MIRI
Leigh N. Fletcher, Oliver R. T. King, Jake Harkett +8
Saturn's northern summertime hemisphere was mapped by JWST/MIRI (4.9-27.9 m) in November 2022, tracing the seasonal evolution of temperatures, aerosols, and chemical species in…
Saturn's atmospheric response to the large influx of ring material inferred from Cassini INMS measurements
Julianne I. Moses, Zarah L. Brown, Tommi T. Koskinen +12
During the Grand Finale stage of the Cassini mission, organic-rich ring material was discovered to be flowing into Saturn's equatorial upper atmosphere at a surprisingly large rate…
Migrating Thermal Tides in the Martian Atmosphere during Aphelion Season Observed by EMM/EMIRS
Siteng Fan, François Forget, Michael D. Smith +11
Temperature profiles retrieved using the first set of data of the Emirates Mars InfraRed Spectrometer (EMIRS) obtained during the science phase of the Emirates Mars Mission (EMM) a…
Thermal Tides in the Martian Atmosphere near Northern Summer Solstice Observed by ACS/TIRVIM onboard TGO
Siteng Fan, Sandrine Guerlet, François Forget +8
Thermal tides in the Martian atmosphere are analyzed using temperature profiles retrieved from nadir observations obtained by the TIRVIM Fourier-spectrometer, part of the Atmospher…
Thermal structure and aerosols in Mars' atmosphere from TIRVIM/ACS onboard the ExoMars Trace Gas Orbiter : validation of the retrieval algorithm
Sandrine Guerlet, N. Ignatiev, F. Forget +12
The Atmospheric Chemistry Suite (ACS) onboard the ExoMars Trace Gas Orbiter (TGO) monitors the Martian atmosphere through different spectral intervals in the infrared light. We pre…
Mapping the zonal winds of Jupiter's stratospheric equatorial oscillation
B. Benmahi, T. Cavalié, T. K. Greathouse +5
Since the 1950s, quasi-periodic oscillations have been studied in the terrestrial equatorial stratosphere. Other planets of the solar system present (or are expected to present) su…
Herschel map of Saturn's stratospheric water, delivered by the plumes of Enceladus
T. Cavalié, V. Hue, P. Hartogh +13
Context. The origin of water in the stratospheres of Giant Planets has been an outstanding question ever since its first detection by ISO some 20 years ago. Water can originate fro…
Radiative-equilibrium model of Jupiter's atmosphere and application to estimating stratospheric circulations
Sandrine Guerlet, Aymeric Spiga, Thierry Fouchet +1
We present a computationally efficient 1-D seasonal radiative model, with convective adjustment, of Jupiter's atmosphere. Our model takes into account radiative forcings from the m…
Global climate modeling of Saturn's atmosphere. Part II: multi-annual high-resolution dynamical simulations
Aymeric Spiga, Sandrine Guerlet, Ehouarn Millour +9
The Cassini mission unveiled the intense and diverse activity in Saturn's atmosphere: banded jets, waves, vortices, equatorial oscillations. To set the path towards a better unders…
A Hexagon in Saturn's Northern Stratosphere Surrounding the Emerging Summertime Polar Vortex
L. N. Fletcher, G. S. Orton, J. A. Sinclair +13
Saturn's polar stratosphere exhibits the seasonal growth and dissipation of broad, warm, vortices poleward of latitude, which are strongest in the summer and absent…
Disruption of Saturn's Quasi-Periodic Equatorial Oscillation by the Great Northern Storm
Leigh N. Fletcher, Sandrine Guerlet, Glenn S. Orton +7
Observations of planets throughout our Solar System have revealed that the Earth is not alone in possessing natural, inter-annual atmospheric cycles. The equatorial middle atmosphe…
Stratospheric aftermath of the 2010 Storm on Saturn as observed by the TEXES instrument. I. Temperature structure
Thierry Fouchet, Thomas K. Greathouse, Aymeric Spiga +4
We report on spectroscopic observations of Saturn's stratosphere in July 2011 with the Texas Echelon Cross Echelle Spectrograph (TEXES) mounted on the NASA InfraRed Telescope Facil…
Saturn's Seasonally Changing Atmosphere: Thermal Structure, Composition and Aerosols
Leigh N. Fletcher, Thomas K. Greathouse, Julianne I. Moses +2
The longevity of Cassini's exploration of Saturn's atmosphere (a third of a Saturnian year) means that we have been able to track the seasonal evolution of atmospheric temperatures…
Scientific rationale of Saturn's in situ exploration
O. Mousis, L. N. Fletcher, J. -P. Lebreton +47
Remote sensing observations meet some limitations when used to study the bulk atmospheric composition of the giant planets of our solar system. A remarkable example of the superior…