Europlanet Science Congress 2021
Virtual meeting
13 – 24 September 2021
Europlanet Science Congress 2021
Virtual meeting
13 September – 24 September 2021
EPSC Abstracts
Vol. 15, EPSC2021-510, 2021
https://doi.org/10.5194/epsc2021-510
European Planetary Science Congress 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

The Martian environment observed by NOMAD on ExoMars Trace Gas Orbiter

Ann Carine Vandaele1, Frank Daerden1, Ian R. Thomas1, Shohei Aoki2, Cédric Depiesse1, Justin Erwin1, Lori Neary1, Arianna Piccialli1, Bojan Ristic1, Séverine Robert1,3, Loïc Trompet1, Sébastien Viscardy1, Yannick Willame1, Jean-Claude Gérard4, Geronimo Villanueva5, Jon Mason6, Manish Patel6, Giancarlo Bellucci7, Miguel Lopez-Valverde8, and Jose-Juan Lopez-Moreno8
Ann Carine Vandaele et al.
  • 1Royal Belgian Inst. for Space Aeronomy, Planetary Aeronomy, Bruxelles, Belgium (a-c.vandaele@aeronomie.be)
  • 2ISAS, JAXA, Japan
  • 3Institute of Condensed Matter and Nanosciences, UCLouvain, Begium
  • 4ULiège, Belgium
  • 5NASA Goddard Space Flight Center, USA
  • 6School of Physical Sciences, The Open University, Milton Keynes, UK
  • 7Istituto di Astrofisica e Planetologia Spaziali (IAPS/INAF), Rome, Italy
  • 8Instituto 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.

NOMAD has been accumulating data about the Martian atmosphere and its surface since its insertion. We will present some results covering the atmosphere composition including clouds and dust, climatologies of water, carbon monoxide and ozone. We also report on the different discoveries highlighted by the instrument by pointing to a series of contributions to this conference that will present in detail several specific studies, like recent progress in the instrument calibration, the latest CO2 and temperature vertical profiles, studies of aerosol nature and distribution, water vapor profiles and variability, carbon monoxide vertical distribution, dayglow observations; detection of HCl, its 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., Gérard, J.-C., Villanueva, G., Mason, J., Patel, M., Bellucci, G., Lopez-Valverde, M., and Lopez-Moreno, J.-J.: The Martian environment observed by NOMAD on ExoMars Trace Gas Orbiter, European Planetary Science Congress 2021, online, 13–24 Sep 2021, EPSC2021-510, https://doi.org/10.5194/epsc2021-510, 2021.