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Showing 1–10 of 10 results
Advanced filters: Author: N. Teanby Clear advanced filters

  • Observations of trace gases over the south pole of Titan indicate that the moon’s middle-atmospheric circulation extends to an altitude of at least 600 kilometres, which is higher than previously thought and requires active chemistry and dynamics in the upper atmosphere.

    • Nicholas A. Teanby
    • Patrick G. J. Irwin
    • F. Michael Flasar
    Research
    Nature
    Volume: 491, P: 732-735

  • JWST and Keck II spectral observations of Saturn’s moon Titan reveal methyl (CH3) as well as non-local thermodynamic equilibrium emission bands of CO and CO2. Imaging shows clouds in Titan’s northern hemisphere at several epochs, with some appearing to evolve in altitude.

    • Conor A. Nixon
    • Bruno Bézard
    • Robert A. West
    Research
    Nature Astronomy
    Volume: 9, P: 969-981

  • The polar hot-spot appeared in Titan after equinox in 2010 suddenly cooled in early 2012, which wasn’t predicted by models. Here the authors use observations to show that the increase in trace gases during the hot-spot resulted in radiative cooling feedback.

    • Nicholas A. Teanby
    • Bruno Bézard
    • F. Michael Flasar
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-13

  • The visible–near-infrared spectrum of the dark spot that appeared on Neptune in 2018 indicates the presence of material that makes the aerosol layer at 5 bar darker at visible wavelengths. Such material can come from deeper layers via upwelling or by sublimation of H2S ice that reveals the darker condensation nuclei.

    • Patrick G. J. Irwin
    • Jack Dobinson
    • Statia L. Cook
    Research
    Nature Astronomy
    Volume: 7, P: 1198-1207

  • Current understanding of weather, climate and global atmospheric circulation on Mars is incomplete, in particular at altitudes above about 30 km. High-resolution observations from the Mars Climate Sounder instrument on the Mars Reconnaissance Orbiter show an intense warming of the middle atmosphere over the south polar region in winter, which suggests a much more vigorous equator-to-pole circulation than expected.

    • D. J. McCleese
    • J. T. Schofield
    • R. W. Zurek
    Research
    Nature Geoscience
    Volume: 1, P: 745-749

  • Ground-based near-infrared spectra of Uranus detected hydrogen sulfide (H2S) above the main cloud deck (at a pressure of 1.2–3 bar), suggesting that the bulk sulfur/nitrogen ratio in Uranus’s atmosphere exceeds unity and that the clouds are dominated by H2S ice.

    • Patrick G. J. Irwin
    • Daniel Toledo
    • Bruno Bézard
    Research
    Nature Astronomy
    Volume: 2, P: 420-427

  • The InSight lander has expanded our knowledge of the atmosphere of Mars by observing various phenomena, including airglow, bores, infrasound and Earth-like turbulence.

    • Don Banfield
    • Aymeric Spiga
    • W. Bruce Banerdt
    Research
    Nature Geoscience
    Volume: 13, P: 190-198

  • Mars is seismically active: 24 subcrustal magnitude 3–4 marsquakes and 150 smaller events have been identified up to 30 September 2019, by an analysis of seismometer data from the InSight lander.

    • D. Giardini
    • P. Lognonné
    • C. Yana
    Research
    Nature Geoscience
    Volume: 13, P: 205-212

  • Geophysical and meteorological measurements by NASA’s InSight lander on Mars reveal a planet that is seismically active and provide information about the interior, surface and atmospheric workings of Mars.

    • W. Bruce Banerdt
    • Suzanne E. Smrekar
    • Mark Wieczorek
    Reviews
    Nature Geoscience
    Volume: 13, P: 183-189