Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
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EPSC Abstracts
Vol. 14, EPSC2020-56, 2020, updated on 13 Nov 2020
https://doi.org/10.5194/epsc2020-56
Europlanet Science Congress 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

NOMAD on ExoMars Trace Gas Orbiter: One Martian year of observations

Ann Carine Vandaele1, Frank Daerden1, Ian R. Thomas1, Shohei Aoki1,2, Cédric Depiesse1, Justin Erwin1, Lori Neary1, Arianna Piccialli1, Bojan Ristic1, Séverine Robert1,3, Loïc Trompet1, Sébastien Viscardy1, Yannick Willame1, Jon Mason4, Manish Patel4, Giancarlo Bellucci5, and Jose-Juan Lopez-Moreno6
Ann Carine Vandaele et al.
  • 1Royal Belgian Inst. for Space Aeronomy, Planetary Aeronomy, Bruxelles, Belgium (a-c.vandaele@aeronomie.be)
  • 2Laboratory for Planetary and Atmospheric Physics, University Liège, Belgium
  • 3ICMN, Université catholique de Louvain, Belgium
  • 4School of Physical Sciences, The Open University, Milton Keynes, UK
  • 5Istituto di Astrofisica e Planetologia Spaziali (IAPS/INAF), Rome, Italy
  • 6Instituto de Astrofisica de Andalucia (IAA/CSIC), Granada, Spain

The NOMAD (“Nadir and Occultation for MArs Discovery”) spectrometer suite on board the ExoMars Trace Gas Orbiter has been designed to investigate the composition of Mars' atmosphere, with a particular focus on trace gases, clouds and dust. The instrument probes the ultraviolet and infrared regions covering large parts of the 0.2-4.3 µm spectral range [1,2], with 3 spectral channels: a solar occultation channel (SO – Solar Occultation; 2.3–4.3 μm), a second infrared channel capable of nadir, solar occultation, and limb sounding (LNO – Limb Nadir and solar Occultation; 2.3–3.8 μm), and an ultraviolet/visible channel (UVIS – Ultraviolet and Visible Spectrometer, 200–650 nm).

Since its arrival at Mars in April 2018, NOMAD performed solar occultation, nadir and limb observations dedicated to the determination of the composition and structure of the atmosphere. Here we report on the different discoveries highlighted by the instrument during its first full Martian year of observations: investigation of the 2018 Global dust storm and its impact on the water uplifting and escape, on temperature and pressure increases within the atmosphere; dust and ice clouds distribution; ozone measurements; dayglow observations; detection of HCl vertical profiles and in general advances in the analysis of the spectra recorded by the three channels of NOMAD.

References

[1] Vandaele, A.C., et al., 2015. Planet. Space Sci. 119, 233-249.

[2] Vandaele et al., 2018. Space Sci. Rev., 214:80, doi.org/10.1007/s11214-11018-10517-11212.

How to cite: Vandaele, A. C., Daerden, F., Thomas, I. R., Aoki, S., Depiesse, C., Erwin, J., Neary, L., Piccialli, A., Ristic, B., Robert, S., Trompet, L., Viscardy, S., Willame, Y., Mason, J., Patel, M., Bellucci, G., and Lopez-Moreno, J.-J.: NOMAD on ExoMars Trace Gas Orbiter: One Martian year of observations, Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-56, https://doi.org/10.5194/epsc2020-56, 2020