Investigating Trace Gases In The Martian Atmosphere Using The Exomars Trace
Gas Orbiter Part 1: Analysis Of Esa Psa Nomad So Channel Data
George H. Cann , University College London, London, Uk (George.Cann.15@Ucl.Ac.Uk). Ingo Waldmann,
Dave Walton, Jan-Peter Muller, University College London, London, Uk.
Introduction:
In 2016, The European Space Agency’S (Esa)
Exomars Trace Gas Orbiter (Tgo) Was Launched To
Investigate The Nature Of Methane, On Mars, Utilising
The Nadir And Occultation For Mars Discovery
(Nomad), Vandaele Et Al. (2015) [1], And Atmospheric Chemistry Suite (Acs), Korablev Et Al. (2018)
[2], Instruments, Both Of Which Have The Sensitivity To
Make The Detection, Liuzzi Et Al. (2019) [3]. However, The Arrival Of The Tgo And Subsequent Science
Mission Has Detected No Ch4, With Upper Limits Of
0.05 Ppbv, Korablev Et Al. (2019) [4], 0.06 Ppbv
Knutsen Et Al. (2021) [5], And 0.02 Ppbv Montmessin
Et Al. (2021) [6] Derived.
In Contrast, Nasa’S Curiosity Sample Analysis
At Mars Tunable Laser Spectrometer Instrument
(Sam-Tls) Mahaffy Et Al. (2012) [7] Has Made Multiple Measurements Of Ch4, Including Measuring An
Elevated Ch4 Background Of 7.2 ± 2.1 Ppbv Ch4