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Journal articles

Martian dust storm impact on atmospheric H₂O and D/H observed by ExoMars Trace Gas Orbiter

Ann Carine Vandaele ¹ Daria Betsis ² yuriy S. Ivanov ³ Bojan Ristic ¹ Håkan Svedhem ⁴ Jorge L. Vago ⁴ José-Juan López-Moreno ⁵ Giancarlo Bellucci ⁶ Gustavo Alonso-Rodrigo ⁷ Shohei Aoki ¹ Sophie Bauduin ⁸ David Bolsée ¹ Giacomo Carrozzo ⁶ R. Todd Clancy ⁹ Edward Cloutis ¹⁰ Matteo Crismani ¹¹ Frank Daerden ¹ Fabiana da Pieve ¹ Emiliano D’aversa ⁶ Cédric Depiesse ¹ Justin T. Erwin ¹ Giuseppe Etiope ⁶ Bernd Funke ⁵ Didier Fussen ¹ Maia Garcia-Comas ⁵ Anna Geminale ⁶ Jean-Claude Gérard ¹² Marco Giuranna ⁶ Leo Gkouvelis ¹² Francisco Gonzalez-Galindo ⁵ James Holmes ¹³ Benoît Hubert ¹² Nicolay I. Ignatiev ² Jacek Kaminski ¹⁴ Özgür Karatekin ¹⁵ David Kass ¹⁶ Armin Kleinböhl ¹⁶ Orietta Lanciano ¹⁷ Stephen Lewis ¹³ Giuliano Liuzzi ¹¹ Manuel López-Puertas ⁵ Arnaud Mahieux ¹ Jon Mason ¹³ Michael J. Mumma ¹¹ Hiromu Nakagawa ¹⁸ Lori Neary ¹ Eddy Neefs ¹ Robert E. Novak ¹¹ Fabrizio Oliva ⁶ Arianna Piccialli ¹ Etienne Renotte ¹⁹ Birgit Ritter ¹² Séverine Robert ¹ Frédéric Schmidt ²⁰ Nick Schneider ²¹ Giuseppe Sindoni ¹⁷ Michael D. Smith ¹¹ Nicholas A. Teanby ²² Ed Thiemann ²¹ Alexander Trokhimovskiy ² Loic Trompet ¹ Jean Vander Auwera ²³ Geronimo Villanueva ¹¹ Sébastien Viscardy ¹ James Whiteway ²⁴ yannick Willame ¹ Michael J. Wolff ⁹ Paulina Wolkenberg ⁶ Roger yelle ²⁵ Juan Alday ²⁶ Francesca Altieri ⁶ Konstantin Anufreychik ² Gabriele Arnold ²⁷ Lucio Baggio ²⁸ Denis A. Belyaev ² Jean-Loup Bertaux ^{28, 2} Natalia Duxbury ²⁹ Anna A. Fedorova ² François Forget ³⁰ Thierry Fouchet ³¹ Davide Grassi ⁶ Alexey V. Grigoriev ² Sandrine Guerlet ³⁰ Paul Hartogh ³² Nikolay I. Ignatiev ² yasumasa Kasaba ¹⁸ Igor Khatuntsev ² Nikita Kokonkov ² Oleg Korablev ² Vladimir Krasnopolsky ³³ Ruslan Kuzmin ² Gaetan Lacombe ²⁸ Franck Lefèvre ²⁸ Emmanuel Lellouch ³¹ Miguel Lopez-Valverde ⁵ Igor Maslov ² Mikhail Luginin ² Anni Määttänen ²⁸ Emmanuel Marcq ²⁸ Javier Martin-Torres ³⁴ Alexander Medvedev ³² Ehouarn Millour ³⁰ Franck Montmessin ²⁸ Boris Moshkin ² Kevin Olsen ²⁸ Manish R. Patel ¹³ Andrey Patrakeev ² Dmitry Patsaev ² Cathy Quantin-Nataf ³⁵ Daniel Rodionov ² Alexander Rodin ³⁶ Alexey Shakun ² Valery Shematovich ³⁷ Ian R. Thomas ¹ Nicolas Thomas ³⁸ Alexander Trokhimovsky ² Luis Vázquez ³⁹ Matthieu Vincendon ⁴⁰ Valérie Wilquet ¹ Colin F. Wilson ²⁶ Roland young ³⁰ Ludmila Zasova ² Lev Zelenyi ² Maria Paz Zorzano ⁴¹

1 BIRA-IASB - Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique

2 IKI - Space Research Institute of the Russian Academy of Sciences

3 MAO - Main Astronomical Observatory of NAS of Ukraine

4 ESTEC - European Space Research and Technology Centre

5 IAA - Instituto de Astrofísica de Andalucía

6 IAPS - Istituto di Astrofisica e Planetologia Spaziali - INAF

7 IDR - Instituto Universitario de Microgravedad "Ignacio Da Riva"

8 Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique

9 SSI - Space Science Institute [Boulder]

10 Department of Geography [Winnipeg]

11 GSFC - NASA Goddard Space Flight Center

12 LPAP - Laboratoire de Physique Atmosphérique et Planétaire

13 School of Physical Sciences [Milton Keynes]

14 Institute of Geophysics [Warsaw]

15 ROB - Royal Observatory of Belgium [Brussels]

16 JPL - Jet Propulsion Laboratory

17 ASI - Agenzia Spaziale Italiana

18 Graduate School of Information Sciences [Sendai]

19 AMOS - Advanced Mechanical and Optical Systems SA

20 GEOPS - Géosciences Paris Sud

21 LASP - Laboratory for Atmospheric and Space Physics [Boulder]

22 School of Earth Sciences [Bristol]

23 ULB - Université libre de Bruxelles

24 CRESS - Centre for Research in Earth and Space Science [Toronto]

25 LPL - Lunar and Planetary Laboratory [Tucson]

26 Department of Physics [Oxford]

27 DLR Institut für Planetenforschung

28 PLANETO - LATMOS

LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales

29 MSU - Lomonosov Moscow State University

30 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)

31 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique

32 MPS - Max-Planck-Institut für Sonnensystemforschung

33 Institute for Astrophysics and Computational Sciences [Washington]

34 Department of Computer Science, Electrical and Space Engineering [Luleå]

35 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon]

36 MIPT - Moscow Institute of Physics and Technology [Moscow]

37 INASAN - Institute of Astronomy of the Russian Academy of Sciences

38 University of Bern

39 UCM - Universidad Complutense de Madrid = Complutense University of Madrid [Madrid]

40 IAS - Institut d'astrophysique spatiale

41 CAB - Centro de Astrobiologia [Madrid]

Abstract : Global dust storms on Mars are rare1,2 but can affect the Martian atmosphere for several months. They can cause changes in atmospheric dynamics and inflation of the atmosphere3, primarily owing to solar heating of the dust3. In turn, changes in atmospheric dynamics can affect the distribution of atmospheric water vapour, with potential implications for the atmospheric photochemistry and climate on Mars4. Recent observations of the water vapour abundance in the Martian atmosphere during dust storm conditions revealed a high-altitude increase in atmospheric water vapour that was more pronounced at high northern latitudes5,6, as well as a decrease in the water column at low latitudes7,8. Here we present concurrent, high-resolution measurements of dust, water and semiheavy water (HDO) at the onset of a global dust storm, obtained by the NOMAD and ACS instruments onboard the ExoMars Trace Gas Orbiter. We report the vertical distribution of the HDO/H2O ratio (D/H) from the planetary boundary layer up to an altitude of 80 kilometres. Our findings suggest that before the onset of the dust storm, HDO abundances were reduced to levels below detectability at altitudes above 40 kilometres. This decrease in HDO coincided with the presence of water-ice clouds. During the storm, an increase in the abundance of H2O and HDO was observed at altitudes between 40 and 80 kilometres. We propose that these increased abundances may be the result of warmer temperatures during the dust storm causing stronger atmospheric circulation and preventing ice cloud formation, which may confine water vapour to lower altitudes through gravitational fall and subsequent sublimation of ice crystals3. The observed changes in H2O and HDO abundance occurred within a few days during the development of the dust storm, suggesting a fast impact of dust storms on the Martian atmosphere.

Document type :

Journal articles

Domain :

Sciences of the Universe [physics] / Astrophysics [astro-ph]

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https://hal-insu.archives-ouvertes.fr/insu-02099160
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Submitted on : Wednesday, November 18, 2020 - 2:12:58 PM
Last modification on : Saturday, June 25, 2022 - 10:50:46 PM
Long-term archiving on: : Friday, February 19, 2021 - 7:43:45 PM