NOMAD, an Integrated Suite of Three Spectrometers for the ExoMars Trace Gas Mission: Technical Description, Science Objectives and Expected Performance

The NOMAD Team

Research output: Contribution to journalReview article

22 Citations (Scopus)

Abstract

The NOMAD (“Nadir and Occultation for MArs Discovery”) spectrometer suite on board the ExoMars Trace Gas Orbiter (TGO) has been designed to investigate the composition of Mars’ atmosphere, with a particular focus on trace gases, clouds and dust. The detection sensitivity for trace gases is considerably improved compared to previous Mars missions, compliant with the science objectives of the TGO mission. This will allow for a major leap in our knowledge and understanding of the Martian atmospheric composition and the related physical and chemical processes. The instrument is a combination of three spectrometers, covering a spectral range from the UV to the mid-IR, and can perform solar occultation, nadir and limb observations. In this paper, we present the science objectives of the instrument and explain the technical principles of the three spectrometers. We also discuss the expected performance of the instrument in terms of spatial and temporal coverage and detection sensitivity.

Original languageEnglish
Article number80
JournalSpace Science Reviews
Volume214
Issue number5
DOIs
Publication statusPublished - 2018 Aug 1

Keywords

  • Composition
  • Dust
  • ExoMars
  • Infrared
  • Mars atmosphere
  • Methane
  • Nadir observations
  • Solar occultation
  • Spectroscopy
  • Ultraviolet
  • Visible

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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