181 citations · 3.6k across the 98 of their papers we have counts for
105 papers
The Ultraviolet Spectrograph on ESA's Jupiter Icy Moons Explorer Mission (JUICE-UVS)
Kurt D. Retherford, Philippa M. Molyneux, Thomas K. Greathouse +51
The Jupiter Icy Moons Explorer (JUICE) mission, led by ESA, has an Ultraviolet Spectrograph (JUICE-UVS) contributed by NASA and built at Southwest Research Institute. JUICE-UVS is…
Infrared Characterisation of Jupiter's Equatorial Disturbance Cycle
Arrate Antuñano, Leigh N. Fletcher, Glenn S. Orton +6
We use an infrared dataset captured between 1984 and 2017 using several instruments and observatories to report five rare equatorial disturbances that completely altered the appear…
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…
Spectral determination of the colour and vertical structure of dark spots in Neptune's atmosphere
Patrick G. J. Irwin, Jack Dobinson, Arjuna James. Michael H. Wong +12
Previous observations of dark vortices in Neptune's atmosphere, such as Voyager-2's Great Dark Spot, have been made in only a few, broad-wavelength channels, which has hampered eff…
Long term variability of Jupiter's northern auroral 8-micron CH4 emissions
James A. Sinclair, Robert West, John M. Barbara +7
We present a study of the long term variability of Jupiter's mid-infrared auroral CH4 emissions. 7.7 - 7.9 micron images of Jupiter recorded by Earth-based telescopes over the last…
Spitzer IRS Observations of Titan as a Precursor to JWST MIRI Observations
Brandon Park Coy, Conor A. Nixon, Naomi Rowe-Gurney +4
In this work we present, for the first time, infrared spectra of Titan from the Spitzer Space Telescope (). The data are from both the short wavelength-low resolution (S…
Jupiter's cloud-level variability triggered by torsional oscillations in the interior
Kumiko Hori, Chris A. Jones, Arrate Antuñano +2
Jupiter's weather layer exhibits long-term and quasi-periodic cycles of meteorological activity that can completely change the appearance of its belts and zones. There are cycles w…
A high spatial and spectral resolution study of Jupiter's mid-infrared auroral emissions and their response to a solar wind compression
James A Sinclair, Thomas K Greathouse, Rohini S Giles +11
We present mid-infrared spectroscopy of Jupiter's mid-to-high latitudes using Gemini-North/TEXES (Texas Echelon Cross Echelle Spectrograph) on March 17-19, 2017. These observations…
Jupiter Science Enabled by ESA's Jupiter Icy Moons Explorer
Leigh N. Fletcher, Thibault Cavalié, Davide Grassi +47
ESA's Jupiter Icy Moons Explorer (JUICE) will provide a detailed investigation of the Jovian system in the 2030s, combining a suite of state-of-the-art instruments with an orbital…
Saturn's Seasonal Variability from Four Decades of Ground-Based Mid-Infrared Observations
James S. D. Blake, Leigh N. Fletcher, Glenn S. Orton +8
A multi-decade record of ground-based mid-infrared (7-25 m) images of Saturn is used to explore seasonal and non-seasonal variability in thermal emission over more than a Saturn…
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…
Planetary Exploration Horizon 2061 Report, Chapter 3: From science questions to Solar System exploration
Véronique Dehant, Michel Blanc, Steve Mackwell +31
This chapter of the Planetary Exploration Horizon 2061 Report reviews the way the six key questions about planetary systems, from their origins to the way they work and their habit…
Unexpected Long-Term Variability in Jupiter's Tropospheric Temperatures
Glenn S. Orton, Arrate Antunano, Leigh N. Fletcher +9
An essential component of planetary climatology is knowledge of the tropospheric temperature field and its variability. Previous studies of Jupiter hinted at periodic behavior that…
Global Modelling of Ganymede's Surface Composition: Near-IR Mapping from VLT/SPHERE
Oliver King, Leigh N. Fletcher
We present maps of Ganymede's surface composition with almost complete longitude coverage, acquired using high spatial resolution near-infrared (0.95 to 1.65) observations from…
Jupiter's Temperature Structure: A Reassessment of the Voyager Radio Occultation Measurements
Pranika Gupta, Sushil K. Atreya, Paul G. Steffes +12
The thermal structure of planetary atmospheres is an essential input for predicting and retrieving the distribution of gases and aerosols, as well as the bulk chemical abundances.…
Compositional Mapping of Europa using MCMC Modelling of Near-IR VLT/SPHERE and Galileo/NIMS Observations
Oliver King, Leigh N Fletcher, Nicolas Ligier
We present maps of surface composition of Europa's anti-jovian hemisphere acquired using high spatial resolution IFU multi-spectral data from the SPHERE instrument on the Very Larg…
Sub-Seasonal Variation in Neptune's Mid-Infrared Emission
Michael T. Roman, Leigh N. Fletcher, Glenn S. Orton +10
We present an analysis of all currently available ground-based imaging of Neptune in the mid-infrared. Dating between 2003 and 2020, the images reveal changes in Neptune's mid-infr…
Jupiter's Temperate Belt/Zone Contrasts Revealed at Depth by Juno Microwave Observations
L. N. Fletcher, F. A. Oyafuso, M. Allison +12
Juno Microwave Radiometer (MWR) observations of Jupiter's mid-latitudes reveal a strong correlation between brightness temperature contrasts and zonal winds, confirming that the ba…
Refining Saturn's deuterium-hydrogen ratio via IRTF/TEXES spectroscopy
James S. D. Blake, Leigh N. Fletcher, Thomas K. Greathouse +7
The abundance of deuterium in giant planet atmospheres provides constraints on the reservoirs of ices incorporated into these worlds during their formation and evolution. Motivated…
The Atmosphere of Uranus
Leigh N. Fletcher
Uranus provides a unique laboratory to test our understanding of planetary atmospheres under extreme conditions. Multi-spectral observations from Voyager, ground-based observatorie…
The science case for spacecraft exploration of the Uranian satellites: Candidate ocean worlds in an ice giant system
Richard J. Cartwright, Chloe B. Beddingfield, Tom A. Nordheim +15
The 27 satellites of Uranus are enigmatic, with dark surfaces coated by material that could be rich in organics. Voyager 2 imaged the southern hemispheres of Uranus' five largest '…
Longitudinal Variations in the Stratosphere of Uranus from the Spitzer Infrared Spectrometer
Naomi Rowe-Gurney, Leigh N. Fletcher, Glenn S. Orton +5
NASA's Spitzer Infrared Spectrometer (IRS) acquired mid-infrared (5-37 microns) disc-averaged spectra of Uranus very near to its equinox in December 2007. A mean spectrum was const…
Constraints on the latitudinal profile of Jupiter's deep jets
E. Galanti, Y. Kaspi, K. Duer +7
The observed zonal winds at Jupiter's cloud tops have been shown to be closely linked to the asymmetric part of the planet's measured gravity field. However, other measurements sug…
Latitudinal variation of methane mole fraction above clouds in Neptune's atmosphere from VLT/MUSE-NFM: Limb-darkening reanalysis
P. G. J. Irwin, J. Dobinson, A. James +5
We present a reanalysis of visible/near-infrared (480-930 nm) observations of Neptune, made in 2018 with the MUSE instrument at the Very Large Telescope (VLT) in Narrow Field Adapt…