Journal articles
Seasonal reappearance of HCl in the atmosphere of Mars during the Mars year 35 dusty season
Kevin Olsen
1
Alexander Trokhimovskiy
2
Luca Montabone
3, 4
Anna Fedorova
2
Mikhail Luginin
2
Franck Lefèvre
5
Oleg Korablev
2
Franck Montmessin
5
F. Forget
3
Ehouarn Millour
3
A. Bierjon
3
Lucio Baggio
5
Juan Alday
1
Colin Wilson
1
Patrick Irwin
1
Denis Belyaev
2
Andrey Patrakeev
2
Alexey Shakun
2
Kevin Olsen 1
Author
Alexander Trokhimovskiy 2
Author
Luca Montabone 3, 4
Author
Anna Fedorova 2
Author
Mikhail Luginin 2
Author
Franck Lefèvre 5
Author IdHAL : francklefevre
Oleg Korablev 2
Author
Franck Montmessin 5
Author IdHAL : franck-montmessin ORCID : https://orcid.org/0000-0002-4187-1457
F. Forget 3
Author IdHAL : francoisforget ORCID : https://orcid.org/0000-0002-3262-4366
Ehouarn Millour 3
Author
A. Bierjon 3
Author
Lucio Baggio 5
Author
Andrey Patrakeev 2
Author
Alexey Shakun 2
Author
1
Department of Physics [Oxford] ( Parks Rd, Oxford OX1 3PU / Keble Rd OX1 3RH - United Kingdom)
- University of Oxford [Oxford] (Wellington Square, Oxford OX1 2JD - United Kingdom)
2
IKI - Space Research Institute of the Russian Academy of Sciences (117997, 84/32 Profsoyuznaya Str, Moscow - Russia)
- RAS - Russian Academy of Sciences [Moscow] (Leninsky Ave, 14, Moscow, Russie, 119991 - Russia)
3
LMD - Laboratoire de Météorologie Dynamique (UMR 8539) (LMD ENS 24 Rue Lhomond 75231 Paris Cedex 05 - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- X - École polytechnique (École polytechnique, 91128 Palaiseau Cedex - France)
- ENPC - École des Ponts ParisTech (École des Ponts ParisTech 6-8 avenue Blaise-Pascal Cité Descartes 77455 Champs-sur-Marne Marne-la-Vallée cedex 2 - France)
- SU - Sorbonne Université (21 rue de l’École de médecine - 75006 Paris - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8539 (France)
- Département des Géosciences - ENS Paris (24 rue Lhomond, 75005 Paris, France - France)
- ENS Paris - École normale supérieure - Paris (45, Rue d'Ulm - 75230 Paris cedex 05 - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- ENS Paris - École normale supérieure - Paris (45, Rue d'Ulm - 75230 Paris cedex 05 - France)
4
IAPS - Istituto di Astrofisica e Planetologia Spaziali - INAF (Via del Fosso del Cavaliere, 100 00133 Rome - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
5
PLANETO - LATMOS (France)
- LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales (11 boulevard d'Alembert
Quartier des Garennes
78280 - Guyancourt - France)
- SU - Sorbonne Université : UMR8190 (21 rue de l’École de médecine - 75006 Paris - France)
- UVSQ - Université de Versailles Saint-Quentin-en-Yvelines : UMR8190 (55 avenue de Paris - 78035 Versailles cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8190 (France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR8190 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
Abstract : Hydrogen chloride was discovered in the atmosphere of Mars for the first time during the global dust storm in Mars year (MY) 34 (July 2018) using the Atmospheric Chemistry Suite mid-infrared channel (ACS MIR) on the ExoMars Trace Gas Orbiter. The simultaneity of variations in dust and HCl, and a correlation between water vapour and HCl, led to the proposal of a novel surface-atmosphere coupling analogous to terrestrial HCl production in the troposphere from salt aerosols. After seasonal dust activity restarted in MY 35 (August 2020), we have been monitoring HCl activity to determine whether such a coupling was validated. Here we present a new technique for analysing the absorption features of trace gases close to the ACS MIR noise level and report that HCl mixing ratios are observed to rapidly increase in both hemispheres coincidentally with the onset of the MY 35 perihelion dust season. We present the temporal evolution of the vertical distribution of HCl (0.1–6 ppbv) and of dust activity in both hemispheres. We also report two observations of >2 ppbv HCl below 10 km in the northern hemisphere during the aphelion period.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-03142993
Contributor : Catherine Cardon <>
Submitted on : Tuesday, February 16, 2021 - 2:26:59 PM
Last modification on : Thursday, April 15, 2021 - 3:29:53 AM
Contributor : Catherine Cardon <>
Submitted on : Tuesday, February 16, 2021 - 2:26:59 PM
Last modification on : Thursday, April 15, 2021 - 3:29:53 AM
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- HAL Id : insu-03142993, version 1
- DOI : 10.1051/0004-6361/202140329
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INSU | LATMOS | PSL | X-LMD | ENS-PARIS | X | ENPC | LMD | X-DEP-MECA | SORBONNE-UNIVERSITE | CNRS | SU-SCIENCES | UVSQ | IP_PARIS | ENPC-LMD | PARISTECH | GS-ENGINEERING | SU-TI
Citation
Kevin Olsen, Alexander Trokhimovskiy, Luca Montabone, Anna Fedorova, Mikhail Luginin, et al.. Seasonal reappearance of HCl in the atmosphere of Mars during the Mars year 35 dusty season. Astronomy and Astrophysics - A&A, EDP Sciences, 2021, 647 (March), A161 (14 p.). ⟨10.1051/0004-6361/202140329⟩. ⟨insu-03142993⟩
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