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The atmosphere of Mars as observed by InSight

Banfield, Don and Spiga, Aymeric and Newman, Claire and Forget, François and Lemmon, Mark and Lorenz, Ralph and Murdoch, Naomi and Viudez-Moreiras, Daniel and Pla-Garcia, Jorge and Garcia, Raphaël F. and Lognonné, Philippe and Karatekin, Özgür and Perrin, Clément and Martire, Léo and Teanby, Nicholas and Hove, Bart Van and Maki, Justin N. and Kenda, Balthasar and Mueller, Nils T. and Rodriguez, Sébastien and Kawamura, Taichi and McClean, John B. and Stott, Alexander E. and Charalambous, Constantinos and Millour, Ehouarn and Johnson, Catherine L. and Mittelholz, Anna and Määttänen, Anni and Lewis, Stephen R. and Clinton, John and Stähler, Simon C. and Ceylan, Savas and Giardini, Domenico and Warren, Tristram and Pike, William T. and Daubar, Ingrid and Golombek, Matthew and Rolland, Lucie and Widmer-Schnidrig, Rudolf and Mimoun, David and Beucler, Éric and Jacob, Alice and Lucas, Antoine and Baker, Mariah and Ansan, Véronique and Hurst, Kenneth and Mora-Sotomayor, Luis and Navarro, Sara and Torres, Josefina and Lepinette, Alain and Molina, Antonio and Marin-Jimenez, Mercedes and Gomez-Elvira, Javier and Peinado, Veronica and Rodriguez-Manfredi, Jose-Antonio and Carcich, Brian T. and Sackett, Stephen and Russell, Christopher T. and Spohn, Tilman and Smrekar, Suzanne E. and Banerdt, W. Bruce The atmosphere of Mars as observed by InSight. (2020) Nature Geoscience, 13 (3). 190-198. ISSN 1752-0894

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Official URL: https://doi.org/10.1038/S41561-020-0534-0

Abstract

The atmosphere of Mars is thin, although rich in dust aerosols, and covers a dry surface. As such, Mars provides an opportunity to expand our knowledge of atmospheres beyond that attainable from the atmosphere of the Earth. The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander is measuring Mars’s atmosphere with unprecedented continu- ity, accuracy and sampling frequency. Here we show that InSight unveils new atmospheric phenomena at Mars, especially in the higher-frequency range, and extends our understanding of Mars’s meteorology at all scales. InSight is uniquely sensitive to large- scale and regional weather and obtained detailed in situ coverage of a regional dust storm on Mars. Images have enabled high- altitude wind speeds to be measured and revealed airglow—faint emissions produced by photochemical reactions—in the middle atmosphere. InSight observations show a paradox of aeolian science on Mars: despite having the largest recorded Martian vortex activity and dust-devil tracks close to the lander, no visible dust devils have been seen. Meteorological measurements have pro- duced a catalogue of atmospheric gravity waves, which included bores (soliton-like waves). From these measurements, we have discovered Martian infrasound and unexpected similarities between atmospheric turbulence on Earth and Mars. We suggest that the observations of Mars’s atmosphere by InSight will be key for prediction capabilities and future exploration.

Item Type:Article
HAL Id:hal-02641370
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Laboratory name:
Funders:
CNES - ANR - DGA - Région Occitanie
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Deposited On:28 May 2020 13:38

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