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Showing 1–11 of 11 results
Advanced filters: Author: Benjamin P. Charnay Clear advanced filters

  • Brown dwarfs are substellar objects subject to variability and colour changes. A 3D general circulation model shows that clouds explain this observed behaviour and highlights their role as a driver of atmospheric dynamics and climate.

    • Lucas Teinturier
    • Benjamin Charnay
    • Bruno Bézard
    Research
    Nature Astronomy
    P: 1-10

  • Electrochemical acid-base production has attractive applications in mineral recovery and CO2 removal, but current membrane-based designs are plagued by resistive losses. The authors report a membrane-less system generating useful acid and base solutions at high rates with less energy.

    • Benjamin P. Charnay
    • Yuxuan Chen
    • Matthew W. Kanan
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-12

  • Phase-resolved mid-infrared observations from JWST of the hot gas giant WASP-43b detect a day–night difference of 659 ± 19 K. Comparison with climate models shows that the observations are compatible with cloudy skies, at least on the nightside, and the lack of methane detection suggests the presence of disequilibrium chemistry.

    • Taylor J. Bell
    • Nicolas Crouzet
    • Sebastian Zieba
    ResearchOpen Access
    Nature Astronomy
    Volume: 8, P: 879-898

  • Biology can profoundly influence the planet’s climate, but over Earth’s long history these effects are poorly constrained. Here the authors show that on early Earth, the evolution of microbes producing and consuming methane likely controlled warming and glacial events, and thus Earth’s habitability

    • Boris Sauterey
    • Benjamin Charnay
    • Régis Ferrière
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-12

  • Titan’s equatorial dunes propagate eastwards, whereas Titan’s surface winds blow towards the West. Atmospheric simulations suggest that tropical methane storms generate strong eastward gusts that may dominate sand transport on Titan’s surface.

    • Benjamin Charnay
    • Erika Barth
    • Antoine Lucas
    Research
    Nature Geoscience
    Volume: 8, P: 362-366

  • Early Martian surface and subsurface were probably habitable for methanogenic microorganisms with a hydrogen-based metabolism, according to an ecological model coupled with a geochemical simulation. Feedback effects of such a biosphere on the atmosphere might have driven strong global cooling.

    • Boris Sauterey
    • Benjamin Charnay
    • Régis Ferrière
    Research
    Nature Astronomy
    Volume: 6, P: 1263-1271

  • A three-dimensional global climate model shows that the loss of a planet’s oceans through complete vaporization or evaporative escape to space will occur at considerably higher insolation than previously thought, owing to stabilizing atmospheric effects.

    • Jérémy Leconte
    • Francois Forget
    • Alizée Pottier
    Research
    Nature
    Volume: 504, P: 268-271

  • The exoplanet atmospheres we study may not be primary atmospheres. Models show that the accretion of gas late in a planetary system’s formation may completely replace the primary atmospheres of terrestrial planets. These secondary atmospheres are likely to have high metallicities and high C/O ratios.

    • Quentin Kral
    • Jeanne Davoult
    • Benjamin Charnay
    Research
    Nature Astronomy
    Volume: 4, P: 769-775

  • The JWST has the potential to increase our understanding of terrestrial exoplanets and their atmospheres, but the various signal contaminations need to be isolated and quantified. Using JWST Cycle 1 observations of TRAPPIST-1 as a benchmark, this Perspective proposes a series of steps to use future JWST data efficiently for this purpose.

    • Julien de Wit
    • René Doyon
    • Michael J. Way
    Reviews
    Nature Astronomy
    Volume: 8, P: 810-818