 |
| Titel |
NOMAD/UVIS Sensitivity investigation for Mars observations |
| VerfasserIn |
Yannick Willame, Rachel Drummond, Cédric Depiesse, Didier Gillotay, Ann Carine Vandaele, Manish Patel, Mark Leese |
| Konferenz |
EGU General Assembly 2011
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250055398
|
|
|
|
|
|
| Zusammenfassung |
| The UVIS instrument is part of NOMAD, the “Nadir and Occultation for MArs Discovery”
spectrometer suite has been selected by ESA and NASA to be part of the payload of the
ExoMars Trace Gas Orbiter mission 2016. This instrument suite will conduct a spectroscopic
survey of Mars’ atmosphere in the UV, visible and IR regions. UVIS’s observation modes
include solar occultation, nadir and limb observations. The nadir mode will provide detailed
trace gas mapping
UVIS is an ultraviolet and visible spectrometer (200 – 650 nm) whose main objective is
to detect and quantify trace gases’ concentrations but also to study aerosols present in the
Martian atmosphere.
The main absorbing trace gas in the wavelength range of UVIS is ozone which has
already been extensively studied but for which there are still significant discrepancies in
present day observations. The high signal-to-noise ratio of the instrument will allow us to
measure ozone more precisely. Moreover the instrument could also detect other minor
constituents that absorb in this wavelength range, such as SO2 if present. Because aerosols
play a major role in the radiative transfer on the red planet, we also plan to investigate
the different characteristics of the interaction between aerosols and UV-visible
light.
The UVIS instrument and its capabilities will be presented. The results of a sensitivity
study on the detectability of minor constituents will be shown and discussed.
NOMAD is being built by a European consortium led by IASB-BIRA (Belgium) and IAA
(Spain), with contributions from OU (UK) and IFSI (Italy). |
|
|
|
|
|
|