Search Publications
Comprehensive investigation of Mars methane and organics with ExoMars/NOMAD
Vandaele, Ann Carine; Aoki, Shohei; Liuzzi, Giuliano +17 more
Methane (CH4) on Mars has attracted a great deal of attention since it was first detected in January 2003. As methane is considered a potential marker for past/present biological or geological activity, any possible detection would require evidence with strong statistical significance. Ethane (C2H6) and ethylene (C…
The climatology of carbon monoxide on Mars as observed by NOMAD nadir-geometry observations
Vandaele, Ann Carine; Liuzzi, Giuliano; Daerden, Frank +10 more
More than a full Martian year of observations have now been made by the Nadir Occultation for MArs Discovery (NOMAD) instrument suite on-board the ExoMars Trace Gas Orbiter. Radiative transfer modeling of NOMAD observations taken in the nadir geometry enable the seasonal and global-scale variations of carbon monoxide gas in the Martian atmosphere …
Results from radiation environment measurements aboard ExoMars Trace Gas Orbiter in Mars science orbit in May 2018-December 2019
Semkova, Jordanka; Koleva, Rositza; Benghin, Victor +19 more
ExoMars is a joint ESA - Rosscosmos program for investigating Mars. Two missions are foreseen within this program: one consisting of the Trace Gas Orbiter (TGO), that carries scientific instruments for the detection of trace gases in the Martian atmosphere and for the location of their source regions, launched on March 14, 2016; and the other, fea…
Density structures in the martian lower thermosphere as inferred by Trace Gas Orbiter accelerometer measurements
Bruinsma, S.; Siddle, A. G.; Mueller-Wodarg, I. C. F. +1 more
ESA's Trace Gas Orbiter (TGO) undertook an aerobraking campaign to lower itself into the required science orbit. We present an overview of densities derived from TGO accelerometer data during aerobraking. With the addition of density data from NASA's MAVEN/NGIMS instrument, we infer that at TGO altitudes (105 km), the atmosphere is driven by dynam…
A new laboratory emissivity and reflectance spectral library for the interpretation of Mars thermal infrared spectral data
Maturilli, A.; Helbert, J.; Alemanno, G. +1 more
New spectral orbital thermal infrared data of Mars are being acquired by the thermal infrared channel TIRVIM (in honor of Vassily Ivanovich Moroz) of the Atmospheric Chemistry Suite (ACS) of spectrometers on board of ExoMars2016 mission. TIRVIM encompasses the spectral range of 1.7-17 µm. A major challenge brought by the analysis of these da…
First year of coordinated science observations by Mars Express and ExoMars 2016 Trace Gas Orbiter
Gondet, B.; Ristic, B.; López-Valverde, M. A. +12 more
Two spacecraft launched and operated by the European Space Agency are currently performing observations in Mars orbit. For >15 years Mars Express has been conducting global surveys of the surface, the atmosphere and the plasma environment of the Red Planet. The Trace Gas Orbiter, the first element of the ExoMars programme, began its science pha…
Forbidden atomic oxygen emissions in the Martian dayside upper atmosphere
Bhardwaj, Anil; Jain, Sonal Kumar; Raghuram, Susarla
Recently, Nadir and Occultation for Mars Discovery (NOMAD) ultraviolet and visible spectrometer instrument on board the European Space Agency's ExoMars Trace Gas Orbiter (TGO) simultaneously measured the limb emission intensities for both [OI] 2972 and 5577 Å (green) emissions in the dayside of Martian upper atmosphere. But the atomic oxygen red-d…
Introduction to Icarus special issue "From Mars Express to ExoMars"
Lopez-Valverde, Miguel A.; Titov, Dmitrij V.; Wilson, Colin F.
In February 2018, the international community working on the investigation and exploration of the atmosphere and surface of Mars met at ESAC near Madrid for a few days conference, organized and funded by the project UPWARDS ("Understanding Planet Mars With Advanced Remote- ensing Datasets and Synergistic Studies", www.upwards-mars.eu) of the EU Ho…